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WO2019063872A1 - Appareil d'échantillonnage de boue de remblayage et système de remblayage équipé d'un tel appareil d'échantillonnage - Google Patents

Appareil d'échantillonnage de boue de remblayage et système de remblayage équipé d'un tel appareil d'échantillonnage Download PDF

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Publication number
WO2019063872A1
WO2019063872A1 PCT/FI2017/050691 FI2017050691W WO2019063872A1 WO 2019063872 A1 WO2019063872 A1 WO 2019063872A1 FI 2017050691 W FI2017050691 W FI 2017050691W WO 2019063872 A1 WO2019063872 A1 WO 2019063872A1
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WO
WIPO (PCT)
Prior art keywords
sampling
backfill
line
receptacle
sample
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/FI2017/050691
Other languages
English (en)
Inventor
Matthew HELINSKI
Cody TENNANT
Jared Holmes
Hamish MACKIE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Outotec Finland Oy
Original Assignee
Outotec Finland Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Outotec Finland Oy filed Critical Outotec Finland Oy
Priority to PCT/FI2017/050691 priority Critical patent/WO2019063872A1/fr
Publication of WO2019063872A1 publication Critical patent/WO2019063872A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
    • G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/08—Filling-up hydraulically or pneumatically
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/18—Devices for withdrawing samples in the liquid or fluent state with provision for splitting samples into portions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
    • G01N35/04—Details of the conveyor system
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N2001/1006—Dispersed solids
    • G01N2001/1012—Suspensions
    • G01N2001/1025—Liquid suspensions; Slurries; Mud; Sludge
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/18—Devices for withdrawing samples in the liquid or fluent state with provision for splitting samples into portions
    • G01N2001/185—Conveyor of containers successively filled
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
    • G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
    • G01N2001/205—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping using a valve

Definitions

  • the present disclosure relates to mining backfill operations using cementitious slurry, and more particularly to a sampling apparatus used for taking samples of said slurry.
  • the present disclosure further concerns a backfill system using such a sampling apparatus.
  • samples underground there is a strong preference to take samples underground, as opposed to taking the samples on the surface.
  • the non-valuable by-product is often only preliminarily mixed with the cementitious material on the surface, final mixing being achieved by the backfill slurry running through the supply line between the surface and the subterranean structure. This enables a shorter retention time within the mixer apparatus, and respectively, a smaller physical size thereof.
  • samples taken underground may be left there to cure in similar conditions as those prevailing in subterranean structure to be backfilled. Hence, a more representative sample is achieved (as opposed to a sample taken on the surface) without the need for creating artificial environmental conditions for the sample to be cured in or transporting the sample underground.
  • An object of the present disclosure is to provide a robust and reliable backfill slurry sampling apparatus consistently providing uncontaminated samples, such that the operation of the sampling apparatus may be automated to a high extent. It is a further object of the present disclosure to provide a backfill system utilizing such a backfill slurry sampling apparatus.
  • the disclosure is based on the idea of providing the backfill slurry sampling apparatus with a sample positioning means and a sampling valve, both of which are operationally controlled by a control means enabling automated operation.
  • the sampling valve is constructed such that no backfill slurry build-ups are formed on the engaging member of the sampling valve, thus preventing sample contamination and sampling valve malfunction. This increases the robustness of the sampling apparatus and ensuring the quality of the samples, such that automated operation may reliably be implemented.
  • An advantage of the backfill slurry sampling apparatus and the backfill system according to the disclosure is that substantially fewer man-hours are required to obtain a necessary sampling rate. Particularly, during operation, personnel is only required to replace receptacles containing samples with empty receptacles, for example once a day - as opposed to the conventional arrangement requiring personnel to travel underground for manually taking and collecting each sample.
  • Fig. 1 illustrates a schematic representation of backfill system according to an embodiment of the disclosure
  • Fig. 2 illustrates a schematic representation of backfill slurry sampling apparatus according to an embodiment of the disclosure
  • Fig. 3 illustrates a schematic representation of backfill slurry sampling apparatus according to an embodiment of the disclosure equipped with flushing functionality
  • Fig. 4 illustrates a schematic representation of a sampling valve used in a backfill slurry sampling apparatus according to an embodiment of the disclosure
  • Fig. 5 illustrates a schematic representation of a sampling valve used in a backfill slurry sampling apparatus according to an embodiment of the disclosure equipped with flushing functionality.
  • a backfill slurry sampling apparatus 1 is provided.
  • the backfill slurry sampling apparatus comprises a backfill feed line 2 for conducting a backfill slurry flow from a backfill supply line 10 to a backfill reticulation line 1 1 .
  • the backfill slurry sampling apparatus further comprises a sampling line 3 for conducting a sample portion of the backfill slurry flow from the backfill feed line 2 to be received by a sample receptacle 5a.
  • the sampling line in turn, has a sampling intake 3a for coupling the sampling line in fluid communication with the backfill feed line 2, and a sampling outlet 3 for feeding the sample portion of the backfill slurry flow to a sample receptacle 6a.
  • a sampling valve 4 is also provided, configured to selectively open and close fluid communication between the backfill feed line 2 and the sampling line 3. That is, the sampling valve is configured to respectively allow and block conduct of a sample portion of the backfill slurry flow from the backfill feed line 2 to the sampling line 3.
  • the backfill slurry sampling apparatus further comprises sample positioning means 5, in turn, comprising a plurality of receptacle holders 6 for detachably receiving and carrying a plurality of sample receptacles 5a, 5b, 5c.
  • the sampling positioning means 5 are arranged for selectively positioning each of the plurality of receptacle holders 6 separately between a feed position 6a, and a stowed position 6b, 6c.
  • the feed position 6a is configured such that the sample portion of the backfill slurry flow from the sampling outlet 3b is received within a corresponding sample receptacle 5a carried by a receptacle holder 6 in the feed position 6a.
  • the backfill slurry sampling apparatus 1 further comprises control means 7 operationally coupled so as to operate the sampling valve 4 and the sample positioning means 5.
  • control means 7 operationally coupled so as to operate the sampling valve 4 and the sample positioning means 5.
  • a programmable logic controller equipped with a suitable input/output interface may be used as the control means 7.
  • control means 7 are configured, when in use, to operate the sample positioning means 5 such that a receptacle holder 6 corresponding to an empty receptacle 5b is positioned from the stowed position 6b to the feed position 6a. Thereafter, the control means 7 operate the sampling valve 4 to conduct a sample portion of the backfill slurry flow from the backfill feed line 2 to the sampling outlet 3b by opening, and subsequently, closing the sampling valve 4. Consequently, the sampling portion will be received by the receptacle 5a corresponding to the receptacle holder 6 in the feed position 6a.
  • the control means 7 are further configured to then operate the sample positioning means 5 such that the receptacle holder 6 corresponding to the receptacle 5a retaining said sample portion of the backfill slurry flow is positioned from the feed position 6a to the stowed position 6c.
  • Stowed positions 6b, 6c may be arranged to be associated with empty and full sample receptacles 5b, 5c, and to receive plurality corresponding receptacle holders 6. Also, a single stowed position associated with both empty full sample receptacles 5b, 5c may be provided on the sample positioning means 5.
  • the sampling valve 4 is configured such that an engaging member 4a thereof is positioned, when the fluid communication between the backfill feed line 2 and the sampling line 3 is closed, within an interaction-region of the backfill slurry flow in the backfill feed line 2. That is, the engaging member 4a is flushed by the backfill slurry flow, thus preventing backfill slurry build-up forming on said engaging member 4a.
  • Build-ups are typically formed by a deposition of the solid contents of the slurry. Having the engaging member in an interaction-region of the backfill slurry flow prevents blockage and malfunction of the sampling valve 4, in addition to contamination of the sample portion by the build-up migrating into the sampling line 3.
  • the sampling valve 4 is a piston valve, a dart valve, or a ball valve, as these types of valves have been found particularly suitably configurable such that the engaging member is positioned within an interaction-region of the backfill slurry flow in the backfill feed line 2, when the fluid communication between the backfill feed line 2 and the sampling line 3 is closed
  • one or more receptacle holders 6 are detachably equipped with a receptacle 5a, 5b, 5c, when in use.
  • the sampling apparatus 1 comprises a flushing inlet 4b downstream of the engaging member 4a of the sampling valve 4 for coupling a flushing fluid supply line 2 to the sampling line 3, such that a flushing fluid flow may be conducted to the sampling line 3 when the sampling valve 4 is closed. That is, the flushing inlet is 4b is on the sampling outlet 3b side of the engaging member 4a.
  • the backfill slurry sampling apparatus 1 further comprises a flushing valve (not illustrated) configured to selectively open and close fluid communication between the flushing fluid supply line and the sampling line 3 so as to, respectively, allow and block, conduct of a flushing fluid flow from flushing fluid supply line to the sampling line 3.
  • the control means 7 are operationally coupled to the flushing valve, and further configured to selectively open, and subsequently, close the sampling valve 4, so as to conduct a flushing fluid flow from flushing fluid supply line the sampling line 3 for flushing residual sample portion of the backfill slurry flow from the sampling line 3.
  • the control means 7 may be configured to initiate a flushing fluid flow through the sampling line 3 for a given time period after and/or before conducting each sample portion of the backfill slurry flow.
  • the flushing inlet 4b may be provided on the sampling valve 4, downstream of the engaging member 4a thereof, such that the flushing fluid supply line is coupled to the sampling line 3 via the flushing fluid inlet 4b and the sampling valve 4. This ensures that also the sampling valve 4 is flushed of residual backfill slurry.
  • the flushing inlet may be provided on the sampling line 3, downstream of the sampling valve 4, such that the flushing fluid supply line is coupled to the sampling line 3 directly via the flushing fluid inlet. This arrangement, in turn, enables a relatively simple sampling valve 4 construction, as opposed to having the flushing fluid inlet on the sampling valve 4.
  • control means 7 are further configured to operate the sample positioning means 5 such that no receptacle holder is positioned in the feed position 5a when a flushing fluid flow is conducted to the sampling line 3.
  • This enables the sampling line 3 downstream of the flushing fluid inlet, i.e. including the sampling outlet 3b, to be flushed form residual backfill slurry.
  • an additional drainage line (not illustrated) may be provided for collecting the flushing fluid.
  • the flushing fluid may be collected to one or more flushing receptacles.
  • control means 7 are further configured so that no flushing fluid is introduced to the sample receptacles 5a, 5b, 5c.
  • sampling valve 4 and the flushing valve are constructed as a single piston valve having an open position, a closed position and a flushing position.
  • the backfill slurry sampling apparatus 1 comprises sample quantity determination means 8 for producing information indicative of a determined quantity of a sample portion of the backfill slurry flow received within a receptacle 5a corresponding to a receptacle holder 6 positioned in the feed position 6a.
  • sample quantity determination means 8 are operationally coupled to the control means for communicating said information indicative of a determined quantity of a sample portion to the control means 7.
  • control means 7 are further configured to close the sampling valve 4 valve when the determined quantity of a sample portion of the backfill slurry flow within a receptacle exceeds a predetermined sample threshold quantity.
  • a predetermined threshold quantity corresponds to an effective volume of a sample receptacle 5a, 5b, 5c, or at least does not exceed the volume of a sample receptacle 5a, 5b, 5c.
  • each of the receptacle holders 6 are equipped with sample quantity determination means 8 for producing information indicative of a determined quantity of a sample portion of the backfill slurry flow received within a corresponding receptacle 5a, 5b, 5c held by the receptacle holder 6.
  • sample quantity determination means 8 are operationally coupled with the control means 7, as discussed above.
  • one or more of the sample quantity determination means 8 comprises a timer for measuring a time during which the sampling valve 4 is open, or, at least a sensor.
  • a sensor is chosen from the from the group consisting of a load cell, non-contact level sensor, contact level sensor and a flow sensor.
  • a load cell may be a piezoelectric load cell, a hydraulic load cell or a pneumatic load cell.
  • a non-contact level sensor may be an infra-red sensor, laser sensor, ultrasound sensor, radar sensor, or machine vision based sensor.
  • a contact level sensor may be a float level sensor.
  • a flow sensor may be an electromagnetic flow sensor, a sonar flow sensor or an optical flow sensor. It should be noted, that the above examples of possible sensors are presented in a non-exclusive manner, and that naturally, any other suitable type sensor may be used.
  • sample quantity determination means may comprise any combination of a timer and / or different types of sensors.
  • the sample positioning means 5 comprises an actuator for selectively positioning each of the plurality of receptacle holders 6 separately between a feed position 6a, and a stowed position 6b, 6c.
  • an actuator is to be operationally coupled with the control means so as to be operated by said control means 7.
  • Non-limiting examples of such an actuator includes electric motors, such as linear and rotational motors. Particularly, stepper motors and servo motors are considered to be suitable, as these incorporate position control capabilities. Moreover, fluid powered (i.e. pneumatic or hydraulic) linear and rotational actuators may also be used.
  • proximity sensors and/or limit switches operationally coupled with the control means 7, may be provided in connection with the receptacle holders 6 and their respective positions 6a, 6b, 6c for enabling position control of an actuator.
  • the sampling positioning means 5 may comprise a linear magazine equipped with a plurality of receptacle holders 6 for receiving and carrying the plurality of sample receptacles 5a, 5b, 5c.
  • a linear magazine is linearly movable so as to selectively position each of the receptacle holders 6 separately in the feed position 6a.
  • the sampling positioning means 5 may comprise a rotatable carousel equipped with a plurality of receptacle holders 6 for receiving and carrying the plurality of sample receptacles 5a, 5b, 5c.
  • a carousel is rotatable so as to selectively position each of the receptacle holders 6 separately in the feed position 6a.
  • the sample positioning means 5 may comprise a gripper arm configured to
  • Such a gripping arm equipped with at least an actuator being operationally coupled with the control means so as to be operated by said control means 7.
  • the sample positioning means 5 further comprise enclosing means for selectively enclosing each of the plurality of receptacles 5a, 5b, 5c separately.
  • the control means 7 are further configured to enclose a receptacle 5a after having a sample portion of the backfill slurry flow being conducted thereto.
  • the enclosing means may be configured to place and close a lid on top of a sample receptacle 5a, 5b, 5c.
  • the backfill sampling apparatus 1 further comprises climate controls means for enclosing at least a receptacle holder 6 in the stowed position 6b, 6c within a climate controlled environment.
  • the climate control means are configured to control at least one of temperature, humidity or ambient pressure, of said climate controlled environment.
  • each receptacle holder in the stowed position 6b, 6c in addition to their corresponding receptacles 5b, 5c, may be enclosed within a climate controlled environment by the climate control means.
  • at least each receptacle holder associated to a sample receptacle 5c having received a sample portion of the backfill slurry flow is enclosed within a climate controlled environment by the climate control means.
  • a backfill system comprises the backfill slurry sampling apparatus 1 according to any of the embodiments discussed above in connection with the first aspect of the disclosure.
  • the backfill slurry sampling apparatus 1 is in a subterranean location.
  • the backfill system comprises a backfill slurry supply apparatus 9 configured to mix mining-derived solid by-product material with cementitious binder material so as to produce a backfill slurry flow.
  • the backfill slurry supply apparatus 9 is positioned in a surface location.
  • tailings or overburden may be used as the mining-derived solid by-product material
  • the backfill system further comprises a backfill supply line 10 for conducting the backfill slurry flow from the backfill slurry supply apparatus 9 to the backfill slurry sampling apparatus 1 .
  • such a backfill system may comprise a plurality backfill slurry sampling apparatuses 1 .
  • Fig. 1 illustrates a schematic representation of backfill system according to an embodiment of the disclosure.
  • a backfill slurry supply apparatus 9 is provided on a ground surface level, the backfill slurry supply apparatus 9 mixes mining-derived solid by-product material with cementitious binder material so as to produce a backfill slurry flow.
  • This backfill slurry flow is then conducted underground along a backfill slurry supply line 10 to a backfill slurry sampling apparatus 1 located at a subterranean structure, such as a mine gallery. Most of this backfill slurry flow is conducted forward along a reticulation line 1 1 for filling or lining the subterranean structure.
  • the backfill slurry sampling apparatus 1 periodically recovers a sample portion of the backfill slurry flow and collects the sample portions in sample receptacles. These sample portions may then, at a later stage, be analysed for determining properties related to the backfill slurry.
  • Fig. 2 illustrates a schematic representation of the backfill slurry sampling apparatus according to an embodiment of the disclosure.
  • the backfill sampling apparatus 1 comprises the backfill feed line 2, receiving backfill slurry from the backfill supply line 10, and conducting it forward to the backfill reticulation line 1 1 .
  • the sampling valve 4 is coupled to the backfill slurry feed line 2 and allows, when open, a sample portion of the backfill slurry to flow from the backfill slurry feed line 2 to the sampling line 3.
  • the sampling valve 4 is controlled by control means 7 operationally coupled to the sampling valve 4, as illustrated by the dash dotted line extending between the two.
  • the sampling line 3 has a sampling intake 3a for coupling the sampling line 3 in fluid communication with the backfill feed line 2, and a sampling outlet 3b for feeding the sample portion of the backfill slurry flow to a sample receptacle 5a.
  • the sample positioning means 6 comprises a plurality of receptacle holders 6 for detachably receiving and holding sample receptacles. Moreover, the sample positioning means 5 may move a receptacle holder 6 carrying an empty sample receptacle 5b, from a corresponding stowed position 6b to a feed position 6a. Furthermore, the sample positioning means 5 may then move a receptacle holder 6 carrying a sample receptacle
  • FIG. 2 differentiates between stowed positions 6b and 6c of empty and full receptacles for the purpose of clarity, this is not necessary. That is, a single stowed position corresponding to both empty and filled receptacles may alternatively be used.
  • sample quantity determination means 8 such as a load cell configured to measure the weight of a receptacle 5a corresponding to a receptacle holder 6 in the feed position, are operationally coupled to the control means 7 as illustrated by the dash-dotted line between the positioning means 5 and the control means 7.
  • the sample quantity determination means 8 may be associated to the feed position 6a or the receptacle holder 6 in the feed position 6a.
  • each of the receptacle holders 6 may be equipped with respective sample quantity determination means 8, thus enabling determination of the quantity of a sample portion of the backfill slurry flow for each receptacle holder 6 corresponding to a receptacle 5a, 5b, 5c.
  • backfill slurry flows in the backfill feed line 2.
  • the control means operate the sample positioning means to move receptacle holder 6 corresponding to an empty sample receptacle 5b into the feed position.
  • the control means open the sampling valve 4 resulting in a sample portion of the backfill slurry flow being conducted in the sample line 3, and further being received in the sample receptacle 5a in the feed position 6a through the sample outlet 3b.
  • the sample quantity determination means communicate information indicative of a determined sample quantity of the sample portion of the backfill slurry flow received within the sample receptacle 5a corresponding to the receptacle holder in the feed position 6a to the control means 7. This information is compared to a predetermined sample threshold quantity, and when the determined quantity of a sample portion equals or exceeds the predetermined sample threshold quantity, the control means 7 close the sampling valve 4. The control means 7 then operate the sample positioning means 5 to move the receptacle holder 6 corresponding to the sample receptacle 5a having received the sample portion of the backfill slurry flow, to the stowed position 6c, preferably leaving the feed position 6a empty. This sequence of acquiring a sample may then be repeated in a desired manner. The sample receptacles 6c in the stowed position 6c, containing sample portions of the backfill slurry flow, may then be collected for subsequent analysis as a batch of multiple sample receptacles 5c.
  • Fig, 3 illustrates an arrangement similar to that of Fig. 2, being equipped with an additional flushing fluid inlet 4b for coupling a flushing fluid supply line to the sampling line 3.
  • Fig. 3 illustrates the flushing fluid inlet 4b as associated to the sampling valve 4, the flushing fluid inlet 4b may alternatively be coupled to the sampling line 3 downstream of the sampling valve.
  • the flushing of the sample line 3, and possibly of the sampling valve 4, is carried out between conducting subsequent sample portions of the backfill slurry flow through the sampling line 3.
  • Fig. 4 illustrates a schematic representation of a sampling valve used in a backfill slurry sampling apparatus 1 according to an embodiment of the disclosure.
  • the sampling valve comprises an engaging member 4a, such as a piston, which may be actuated to open or close fluid communication between the slurry feed line 2 and the sampling line 3.
  • the sampling valve 4 is closed, i.e. the engaging member 4a prevents fluid communication from the backfill slurry feed line 2 to the sampling line 3.
  • the engaging member 4a is situated in an interaction-region of the backfill slurry flow in the backfill slurry feed line 2. This means that the slurry flow in the slurry feed line 2 flows over the engaging member 4a, thus preventing build-up, i.e. solids deposition, thereon.
  • Fig. 4 illustrates the engaging member 4a being completely flush with flow area of the backfill slurry feed line 2, which is the preferred configuration.
  • the engaging member 4a may, however, also extend slightly into the feed line 2, or extend slightly short of the feed line 2, as long as the backfill slurry flow flushes the engaging member 4a, that is, runs over it.
  • Fig. 5 illustrates an arrangement similar to that of Fig. 5, with the exception of the sampling valve 4 being equipped with the flushing fluid inlet 4b downstream, of the engaging member 4a. That is, the flushing fluid inlet 4b is on the sampling line 3 side of the engaging member 4a.
  • the sampling valve 4 of Fig. 5 is closed, meaning that the fluid communication between the backfill slurry feed line 2 and the sampling line 3 is closed, fluid communication between the flushing fluid inlet 4b and the sampling line 3 is respectively open.
  • the sampling valve 4 of Fig. 5 is open, meaning that the fluid communication between the backfill slurry feed line 2 and the sampling line 3 is open, fluid communication between the flushing fluid inlet 4b and the sampling line 3 is respectively closed.
  • flushing fluid supply connected to the flushing fluid inlet 4b may be selectively initiated. This is to say, the flushing fluid flow from the flushing fluid supply 4b to the sampling line 3 is not necessarily conducted when the sampling valve is closed, but the flushing fluid flow may be introduced upon opening the flushing fluid supply, or a valve associated thereto, preferably by the control means 7.

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Abstract

L'invention concerne un appareil d'échantillonnage de boue de remblayage (1), dans lequel une partie d'échantillon d'un écoulement de boue de remblayage est conduite vers une ligne d'échantillonnage (3) par l'intermédiaire d'une soupape d'échantillonnage (4). Un moyen de positionnement d'échantillon (5) est prévu, comprenant une pluralité de supports de réceptacle (6) pour recevoir et transporter de manière amovible des réceptacles d'échantillon (5a, 5b, 5c), ledit moyen de positionnement d'échantillonnage étant agencé pour positionner sélectivement chacun des supports de réceptacle (6) séparément entre une position d'alimentation (6a) et une position rangée (6b, 6c). Des moyens de commande (7) sont prévus pour faire fonctionner la vanne d'échantillonnage (4) et le moyen de positionnement d'échantillon (5). Un élément de mise en prise (4a) de la soupape d'échantillonnage (4) est positionné, lorsque la communication fluidique entre la ligne d'alimentation de remblayage (2) et la ligne d'échantillonnage (3) est fermée, à l'intérieur d'une région d'interaction de l'écoulement de boue de remblayage dans la ligne d'alimentation de remblayage (2), empêchant ainsi la formation d'accumulation de boue de remblayage sur ledit élément de mise en prise (4a).
PCT/FI2017/050691 2017-09-29 2017-09-29 Appareil d'échantillonnage de boue de remblayage et système de remblayage équipé d'un tel appareil d'échantillonnage Ceased WO2019063872A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2017/050691 WO2019063872A1 (fr) 2017-09-29 2017-09-29 Appareil d'échantillonnage de boue de remblayage et système de remblayage équipé d'un tel appareil d'échantillonnage

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PCT/FI2017/050691 WO2019063872A1 (fr) 2017-09-29 2017-09-29 Appareil d'échantillonnage de boue de remblayage et système de remblayage équipé d'un tel appareil d'échantillonnage

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WO2019063872A1 true WO2019063872A1 (fr) 2019-04-04

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CN113405850A (zh) * 2021-06-24 2021-09-17 北京科技大学 一种采空区充填过程中料浆现场取样装置及使用方法

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EP1845357A1 (fr) * 2001-10-19 2007-10-17 MonoGen, Inc. Appareil et procédé pour mélanger des spécimens dans des fioles
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CN110439610A (zh) * 2019-08-30 2019-11-12 陕西开拓建筑科技有限公司 一种煤矿采空区远距离浆料充填输送系统及方法
CN110439610B (zh) * 2019-08-30 2024-06-04 陕西开拓建筑科技有限公司 一种煤矿采空区远距离浆料充填输送系统及方法
CN113405850A (zh) * 2021-06-24 2021-09-17 北京科技大学 一种采空区充填过程中料浆现场取样装置及使用方法

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