JP3597335B2 - Underground exploration equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an underground exploration apparatus, and more particularly to an underground exploration apparatus that can easily penetrate a gravel-mixed layer or compacted mountain sand.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when an electric pole, a street tree, or the like is installed on the ground, an exploration excavation of a buried object is carried out before the main excavation in the excavation area. This exploration and excavation of buried objects is to confirm whether buried objects such as gas pipes and water and sewage pipes exist in the area to be excavated, and a typical one using high-pressure fluid is known. ing.
[0003]
In an underground exploration device used in the exploration and excavation method using the high-pressure fluid, a plurality of hollow and long search rods are provided. A hydraulic tube extended from a high-pressure pump is connected to one end of each of the search rods, and an injection nozzle is provided at the other end of the search rod, and a high-pressure pump introduced into the search rod by the high-pressure pump. The fluid can be ejected from the ejection nozzle.
In addition, a rectangular flat plate connecting plate is attached to these search rods in order to connect with adjacent search rods. This connecting plate is provided so that the probe can be pushed vertically into the ground, its length is set so that the excavation areas of adjacent injection nozzles overlap, and the side shape is the outer edge of the area to be excavated It is in the form of imitating. Then, the connecting plate side is brought into close contact with the search rod while facing the ground surface, and is fixed to the search rod using welding, screws, or the like.
[0004]
In such an underground exploration apparatus, after a search rod is installed at the outer edge of the area to be excavated, a high-pressure pump is operated, and underground excavation is performed by high-pressure liquid injected from an injection nozzle. Here, as described above, the excavation range of the injection nozzle is set so as to overlap the excavation range of the adjacent injection nozzle, so that the tip of the underground exploration device, that is, the injection nozzle and the connecting plate are grounded by injection of the high-pressure liquid. Can penetrate inside. This operation is repeated along the outer edge of the excavation area, and the presence or absence of buried objects is confirmed.
[0005]
[Problems to be solved by the invention]
However, since the tip edge of the connecting plate in the above-mentioned underground exploration device is in parallel with the excavated surface (ground), it penetrates into the loam ground containing almost the same amount of sand, fine sand, clay, etc. However, if the ground contains contaminated gravel, the connecting plate may come into contact with the gravel, making it impossible to penetrate the underground exploration equipment. In addition, in the case of compacted mountain sand, it takes time to loosen compaction, and there is a problem that work efficiency is reduced.
[0006]
An object of the present invention is to provide an underground exploration apparatus which can easily penetrate the ground including gravel and compacted mountain sand, focusing on the above-mentioned conventional problems.
[0007]
[Means for Solving the Problems]
According to the present invention, if the leading edge of the connecting plate is angled and the leading edge of the connecting plate is obliquely contacted with the excavated surface (ground), the gravel is connected even if the connecting plate hits the gravel. This is based on the finding that the slab moves along the tip edge of the plate, which makes it possible for underground exploration equipment to penetrate the ground containing gravel.
That is, the underground exploration apparatus according to the present invention, by arranging a plurality of search rods having an injection nozzle for ejecting a high-pressure fluid in parallel by a connecting plate, and performing an underground exploration by excavation with the injection high-pressure fluid, The connecting plate provided at the leading end is configured so that the leading edge is formed in a convex or concave shape.
[0008]
Further, in a device in which a plurality of search rods having injection nozzles for jetting high-pressure fluid are arranged in parallel by a connection plate, and underground exploration is performed by excavation with the injection high-pressure fluid, the end of the connection plate provided at the end of the search rod The edge was provided with a blade.
Here, the leading edge of the connecting plate is formed in a convex or concave shape.
Further, in a device in which a plurality of search rods having injection nozzles for ejecting high pressure fluid are arranged in parallel by a connecting plate, and underground exploration is performed by excavation with the injected high pressure fluid, the connection plate provided at the tip of the search rod is used for exploration. It is configured to be in contact with the apex of the chevron pedestal fixed to the rod and to be elastically supported and fixed between the chevron and the skirt of the chevron pedestal, so that the plate surface of the connecting plate can swing.
[0009]
[Action]
According to the above configuration, when the underground exploration device penetrates the ground including the gravel, the gravel starts to contact the connecting plate. Here, since the tip edge of the connecting plate is formed in a convex or concave shape, a force oblique to the underground traveling direction of the connecting plate is applied to the gravel, and the gravel is connected to the connecting plate forming a slope. Move along the leading edge of the. Therefore, the excavation of the connecting plate is not hindered by the gravel, so that the underground exploration device can penetrate even in the ground including the gravel.
In addition, when the connecting plate is fixed to the search rod, since the plate surface of the connecting plate is allowed to oscillate, when the gravel comes into contact with the connecting plate in the ground, the connecting plate shakes and the connecting plate escapes from the gravel, The ground around the gravel collapses due to the injection of high-pressure water, and the gravel moves due to the force from the connecting plate. Therefore, the excavation of the connecting plate is not hindered by the gravel, so that the underground exploration device can penetrate even in the ground including the gravel.
[0010]
On the other hand, when an underground exploration device provided with a blade at the leading edge of the connecting plate is pressed against compacted mountain sand, an excavated surface (ground) comes into contact with the blade provided at the leading edge of the connecting plate. Since the blade provided at the tip edge of the connecting plate has an uneven shape, the force pushing the connecting plate in the underground direction concentrates on the convex part of the tip edge, and compacts mountain sand. Can be unraveled. Further, when the distal end portion of the connecting plate is formed in a convex or concave shape, the force for pushing into the specific convex portion can be concentrated, and it is possible to penetrate even more strongly compacted mountain sand.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, specific embodiments of the underground survey device according to the present invention will be described in detail with reference to the drawings.
[0012]
FIG. 1 is an explanatory diagram showing the configuration of an underground exploration device used when exploring and excavating the ground where gravel is mixed.
As shown in the figure, a water supply tank 12 and a high-pressure pump 14 are connected to the underground exploration apparatus 10 so that high-pressure water can be jetted from an exploration rod 16. In addition, a connecting plate 18 for countermeasures against gravel, which will be described later, is provided on the tip side of the pair of search rods 16 for injecting high-pressure water, and connects the search rods 16 to each other. Then, by inserting the connecting plate 18 for countermeasures against gravel into the scanning groove 22 provided in the rotary guide board 20, the search rod 16 can be moved along the excavation area which is a cylindrical closed area.
[0013]
FIG. 2 is an explanatory view showing a form of the connecting plate 18 for countermeasures against gravel used when exploring and excavating the ground where the gravel is mixed, and FIG. 1 shows a first embodiment. As shown in FIG. 1A, the connecting plate 18 for countermeasures against gravel is stamped from a flat plate and has the same thickness. The lower edge 24 of the front end of the connecting plate 18 for countermeasures against the ground has an apex at a central portion thereof, and a sword portion that is a convex portion is formed from the apex to both ends. The opposite side of the tip lower edge 24 is also formed so as to substantially conform to the outer edge shape of the tip lower edge 24, and the whole shape of the connecting plate 18 for countermeasures against gravel is shaped like a letter. Further, the connecting plate 18 for countermeasures against gravel is curved and formed in an arc shape in accordance with the outer edge of the area to be excavated.
[0014]
The mounting structure of the thus constructed connection plate 18 for countermeasures against gravel and the search rod 16 is as follows.
FIG. 3 is an explanatory view showing an attachment portion between the gravel countermeasure connection plate 18 and the search rod 16.
As shown in FIG. 1A, the tip end of the search rod 16 is composed of an aluminum pipe 26, an iron pipe 28 following the aluminum pipe 26, and an injection nozzle 30.
Here, a flat attachment plate 32 is welded and fixed to the outer edge of the iron pipe 28, and a fixing screw is screwed into a tap 34 provided on the attachment plate 32, so that a connecting plate attachment base to be described later can be attached. Can be mounted.
[0015]
A triangular prism-shaped connecting plate mounting base 36 fixed to the mounting plate 32 is formed with a mountain-shaped slope 40 orthogonal to the excavation direction. A through hole is provided at a position corresponding to the tap 34 provided on the mounting plate 32, and the connecting plate mounting base 36 can be fixed to the connecting plate 32 by attaching a fixing screw. Further, mounting taps 42 are provided at the four corners of the connecting plate mounting base 36, and the connecting plate is brought into contact with the mountain-shaped slope 40 by screwing a fixing release screw from the connecting plate side, which will be described later. 36 while allowing it to be fixed.
Also, a triangular prism-shaped cushioning member 44 made of rubber material is attached to the mountain-shaped slope 40 to limit the amount of deflection of the connecting plate 18 for preventing gravel, and the connecting plate 18 for preventing gravel is attached to the mountain-shaped slope 40. Prevents contact.
The fixing and releasing screw 46 for attaching the connecting plate 18 for countermeasures against gravel to the connecting plate fixing base 36 has a portion corresponding to the thickness of the cushion 44 from below the neck of the fixing and releasing screw 46 for the purpose of reducing sliding friction with the cushion 44. Is set straight.
[0016]
FIG. 2 (2) shows a second embodiment of the connecting plate 18 for measures against gravel. In the second embodiment, the central portion of the lower end portion 24 at the front end is the lowest point farthest from the ground, and an inverted sword tip is formed from the lowest point to both ends. The other configuration is the same as that of FIG.
[0017]
FIG. 4 shows a form of a mountain sand connecting plate 48 used for exploring and excavating the ground where fine mountain sand is compacted. FIG. 4A shows the first form of the mountain sand connecting plate 20. Is shown. As shown in FIG. 1A, the connection plate 48 for mountain sand is formed by bending a rectangular flat plate into an arc shape so as to match the outer edge of the area to be excavated. Is provided.
[0018]
FIGS. 2B and 2C show second and third embodiments of the connection plate 48 for mountain sand. In the connection plate 48 for mountain sand shown in these figures, the shape of the lower end portion 50 of the tip is formed at the sword tip portion or the inverted sword tip portion similarly to the connection plate 18 for countermeasures against gravel, and is added to the connection plate 48 for mountain sand. Underground propulsion can be applied to a particular plow blade 52. Therefore, the mountain sand connecting plate 48 shown in FIGS. 2B and 3C can penetrate the mountain sand ground more firmly than that shown in FIG. 1A.
[0019]
FIG. 5 is an explanatory view showing a form of a connection plate 54 for mountain sand used for exploring and excavating mountain sand called a crusher type. In the figures (1) to (3), the plow-shaped blade 52 of the lower end edge portion 50 of the connection plate 48 for mountain sand described above is replaced with a mountain-shaped blade 56. The other configuration is the same as the connection plate 48 for mountain sand.
[0020]
Here, a description will be given of how the underground exploration apparatus 10 configured as described above is used for exploring and excavating the ground including gravel.
The pair of search rods 16 which spray high-pressure water and the connecting plate 18 for countermeasures against gravel are pushed into the ground along a profile groove 22 provided in a rotary guide board 20. Then, as the underground progresses, the gravel existing in the ground starts to contact the gravel countermeasure connecting plate 18.
[0021]
FIG. 6 is a state diagram showing how the gravel moves as the gravel countermeasure connecting plate 18 advances underground.
As shown in FIG. 1A, when the gravel 58 comes in contact with the vicinity of the top of the lower end edge 24 of the connecting plate 18 for measures against gravel, the gravel 58 receives a reaction force 60 from the lower edge 24 of the tip. Here, the reaction force 60 has a component force that drives the gravel 58 in a direction perpendicular to the traveling direction of the gravel countermeasure connecting plate 18 (in the horizontal direction in the figure), and as shown in FIG. The gravel 58 moves toward the end along the gravel countermeasure connecting plate 18 as the gravel countermeasure connecting plate 18 advances underground. Then, when the connecting plate 18 for gravel control further advances into the ground, the gravel 58 separates from the end of the connecting plate 18 for gravel control as shown in FIG.
Even if the gravel 58 exists in the ground in this way, as described above, the gravel 58 moves along the slope of the gravel countermeasure connecting plate 18 one after another and moves away from the gravel countermeasure connecting plate 18, Does not hinder underground exploration. Therefore, underground exploration can be performed even on the ground including the gravel 58.
[0022]
Also, in the second embodiment in which the lower end portion 24 of the connecting plate 18 for countermeasures against gravel is formed in the shape of an inverted sword, the lower end portion 24 of the front end is formed in a slope, so that the gravel is similar to the first embodiment. 58 can escape along the lower edge 24 of the tip.
Also, when the connecting plate 18 against gravel contacts the gravel 58, the connecting plate 18 against gravel tilts along the ridge of the mountain-shaped slope 40. Due to the inclination of the connecting plate 18 for gravel control, the gravel 58 moves to the side surface of the connecting plate 18 for gravel control, and separates from the connecting plate 18 for gravel control as the connecting plate 18 for gravel control advances underground. .
In this manner, when the probe 18 is attached to the search rod 16 via the connection plate mounting base 36 having the mountain-shaped slope 40, it is possible to penetrate the ground containing gravel, in addition to the effect of the shape of the connection plate 18 for measures against gravel.
[0023]
Here, the procedure of applying the mountain sand connecting plate 48 of the first embodiment to the connecting plate of the underground exploration apparatus 10 and exploring and excavating compacted mountain sand will be described.
FIG. 7 is a state diagram showing a state where the mountain sand connecting plate 48 according to the first embodiment performs exploration and excavation of compacted mountain sand. As shown in FIG. 1A, when the lower edge 50 of the tip of the connection plate 48 for mountain sand comes into contact with the ground, the force for propelling the connection plate 48 for mountain sand into the ground is raised by the protrusion of the plow blade 52. Concentrate only on the department. Due to the pressure concentration on the convex portion of the plow blade 52, the convex portion of the plow blade 52 can penetrate into the mountain sand as shown in FIG. 2B, and the compaction of the ground can be loosened. become. Then, the loosened mountain sand moves toward the concave side of the plow blade 52, and is flown to the ground surface side by the high-pressure water injected from the injection nozzle 30.
In this manner, the compaction of the pile sand is loosened at the convex portion of the plow-shaped blade 52, and the loosened pile sand is successively moved to the concave portion of the plow-shaped blade 52 and sent to the ground surface together with the high-pressure water. Underground exploration can be easily performed even with compacted mountain sand.
[0024]
In the second and third embodiments of the connection plate 48 for mountain sand, since the tip edge portion 50 is formed in a sword tip or an inverted sword tip, the pressure is concentrated only on the convex portion of the specific plow blade 52. Can be done. For this reason, the underground exploration can be performed on the ground further compacted than the first embodiment.
[0025]
Here, the procedure of applying the mountain sand connection plate 54 of the first embodiment to the connection plate of the underground exploration apparatus 10 to search and excavate crusher-type mountain sand will be described.
FIG. 8 is a state diagram showing a state in which the connection plate 54 for mountain sand according to the first embodiment performs exploration and excavation of crusher type mountain sand. As shown in FIG. 1A, since the shape of the angled blade 56 in the mountain sand connecting plate 54 is all formed at an obtuse angle unlike the plow-shaped blade 52, the ground stone 62 is formed by the angled blade 56. Is not bitten by the angled blade 56. Since the crushed stones 62 move along the outer edge of the angled blade 56 due to the underground progression of the mountain sand connecting plate 54 as shown in FIG. 2B, the compaction of the crushed stones 62 is loosened. This will enable underground exploration.
[0026]
Further, in the second and third embodiments of the mountain sand connecting plate 54, since the tip edge portion 64 is formed in a sword tip or an inverted sword tip, the pressure is concentrated only on the convex portion of the specific angled blade 56. Underground exploration can be performed even on the ground further compacted than in the first embodiment.
[0027]
As described above, by changing the shape of the tip edge of the connecting plate in the underground exploration device 10 to a convex shape or a concave shape, or by providing an uneven blade at the tip edge, the ground containing gravel or compaction is obtained. It is possible to allow the underground exploration device 10 to penetrate into the mountain sand.
[0028]
【The invention's effect】
As described above, according to the present invention, a plurality of search rods having injection nozzles for jetting a high-pressure fluid are arranged in parallel by a connecting plate, and in an apparatus for performing underground exploration by excavation with an injection high-pressure fluid, Since the tip edge of the connecting plate provided at the tip is formed in a convex or concave shape, it is possible to escape the gravel along the tip edge of the connecting plate, so that the underground exploration device can be used even in the ground containing gravel. Can be penetrated.
[0029]
Further, in a device in which a plurality of search rods having injection nozzles for ejecting a high pressure fluid are arranged in parallel by a connection plate and an underground exploration is performed by excavation with the injection high pressure fluid, a tip edge of a connection plate provided at a tip portion of the search rod is provided. Since the blade is provided in the portion, the force for penetrating the connecting plate in the underground direction is concentrated on the convex portion of the front edge. For this reason, it is possible to loosen the compaction one after another at the end edge portion of the connecting plate, and the underground exploration device can easily penetrate even compacted mountain sand.
[0030]
And, since the tip edge of the connecting plate is formed in a convex or concave shape, a force for penetrating the connecting plate in the underground direction is applied to the convex portion of the tip edge which first comes into contact with the excavation surface (ground). concentrate. For this reason, it is possible to penetrate the mountain sand that has been firmly compacted, and it is possible to loosen the compaction of the mountain sand. Furthermore, since a force acts on the mountain sand obliquely from the sloped edge, the mountain sand can be moved along the edge of the connecting plate. Therefore, the underground exploration device can easily penetrate even the compacted mountain sand.
[0031]
Further, in a device in which a plurality of search rods having injection nozzles for ejecting a high pressure fluid are arranged in parallel by a connecting plate, and underground exploration is performed by excavation with the injected high pressure fluid, the connecting plate provided at the tip of the search rod is a search rod. Abuts on the top of the chevron pedestal and is elastically supported and fixed between the chevron and the skirt of the chevron. Then, the connecting plate shakes and the connecting plate escapes from the gravel. For this reason, the connecting plate does not push the gravel into the ground, so that the underground exploration device can penetrate even in the ground containing the gravel.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a configuration of an underground exploration device used when exploring and excavating a ground where gravel is mixed.
FIG. 2 is an explanatory view showing a form of a connecting plate 18 for countermeasures against gravel used when exploring and excavating a ground in which gravel is mixed.
FIG. 3 is an explanatory view showing an attachment portion between a connection plate for countermeasures against gravel and a search rod.
FIG. 4 is an explanatory view showing a form of a mountain sand connecting plate 48 used when exploring and excavating the ground where fine mountain sand is compacted.
FIG. 5 is an explanatory view showing a form of a mountain sand connecting plate 54 used for exploring and excavating mountain sand called a crusher type.
FIG. 6 is a state diagram showing how the gravel moves as the gravel countermeasure connecting plate 18 advances underground.
FIG. 7 is a state diagram showing a state in which the mountain sand connecting plate 48 according to the first embodiment performs exploration and excavation of compacted mountain sand.
FIG. 8 is a state diagram showing a state in which the mountain sand connecting plate 54 according to the first embodiment performs exploration and excavation of a crusher type mountain sand.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Underground exploration apparatus 12 Water supply tank 14 High pressure pump 16 Search rod 18 Gravel countermeasure connection plate 20 Rotary guide board 22 Copying groove 24 Tip lower edge 26 Aluminum pipe 28 Iron pipe 30 Injection nozzle 32 Mounting plate 34 Tap 36 Connection plate Mounting table 40 Mountain slope 42 Mounting tap 44 Cushion material 46 Fixing and releasing screw 48 Mountain sand connection plate 50 Tip lower edge 52 Plow blade 54 Mountain sand connection plate 56 Mountain blade 58 Gravel 60 Reaction force 62 Crushed stone 64 Tip Lower edge

Claims (4)

In a device for arranging a plurality of search rods having injection nozzles for ejecting a high-pressure fluid in parallel by a connecting plate and performing underground exploration by excavation with the injected high-pressure fluid, a tip edge of the connection plate provided at a tip end of the search rod is provided. An underground exploration device characterized in that the portion is formed in a convex or concave shape. In a device for arranging a plurality of search rods having injection nozzles for ejecting a high-pressure fluid in parallel by a connecting plate and performing underground exploration by excavation with the injected high-pressure fluid, a tip edge of the connection plate provided at a tip end of the search rod is provided. An underground exploration device characterized in that a blade is provided in a portion. The underground exploration device according to claim 2, wherein a tip edge portion of the connection plate is formed in a convex or concave shape. In a device in which a plurality of search rods having injection nozzles for ejecting high-pressure fluid are arranged in parallel by a connecting plate, and underground exploration is performed by excavation with the injected high-pressure fluid, the connecting plate provided at the tip of the search rod is a search rod. Underground characterized by being abutted against the apex portion of the angled pedestal fixed to and fixed elastically to and supported by the skirt of the angled pedestal, allowing the plate surface of the connection plate to sway. Exploration equipment.

Images