CN107366347A - A kind of underpass flood reverse-filling drainage system - Google Patents

Abstract

The invention relates to an anti-flooding and anti-backflow drainage system for an underground passage, which belongs to the technical field of auxiliary facilities for underground passages. Excavate a groove on the ground at the entrance of the underground passage, set a foot protection cover and vertical support outside the groove, install a secondary anti-flooding and anti-backflow device in the groove, the upper part is equipped with a water-permeable protective cover, and the lower part is equipped with a rainwater filter layer. The side wall is a rigid side wall baffle, and there is a certain space between the lower part of the secondary anti-flooding and anti-backflow device and the bottom of the groove, and is connected with the sewer water inlet. When heavy rain hits, the rainwater enters the drainage system from the permeable protective cover. As the water level in the groove rises, the secondary anti-flooding and anti-inverting device rises at the same time by using buoyancy, and the connecting line on the permeable protective cover drives the anti-inverting baffle to gradually close . The invention has the advantages of simple structure, good integrity, clear force transmission, safety and reliability, material saving, convenient construction, no manual operation, self-adjusting drainage speed according to water volume, and mainly solves the problem of untimely drainage at the entrance of the underground passage in rainy days.

Description

An anti-flooding and anti-inversion drainage system for underground passages

technical field

The invention belongs to the technical field of auxiliary facilities for underground passages, and in particular relates to an anti-flooding and anti-inversion drainage system for underground passages.

Background technique

In recent years, with the development of cities, the use of above-ground space has become saturated, and underground space has been gradually utilized. More and more underground shopping malls, underground parking lots, underground warehouses and underground sidewalks have appeared and been widely built. To a large extent, it alleviates the shortage of urban land resources and reduces the pressure on ground transportation. The development of underground space in my country started relatively late, and insufficient attention has been paid to disaster prevention, especially flood prevention. Flood intrusion in underground space will cause direct casualties such as equipment loss and casualties, as well as indirect casualties such as interruption of social communication. The current codes and standards do not have clear regulations and requirements for the flood control standard of the underground space. Generally, the surface flood control standard is used in the design process, and the differences in the surface space and underground space structure make the surface flood control standard not necessarily Suitable for underground spaces.

In the original underground channel entrance drainage scheme, such as the design of the underground parking lot, a slope with a slope of 10-30 degrees and 80-200mm higher than the outdoor floor is usually set at the start of the driveway, and the first set is set at the highest point. Water open ditch, and then slope to the outdoor floor with a slope of 10-30 degrees. The rainwater in the open ditch is directly discharged into the rainwater pipe network. The open ditch is equipped with steel or cast iron castors to facilitate the passage of vehicles and people. However, due to urban drainage The system is poor. Once the heavy rain hits the city, waterlogging occurs from time to time. The above-mentioned underground passage entrance only relies on the slope drainage method 80-200mm higher than the outdoor floor, which is obviously insufficient. What is particularly serious is that some basements are often soaked In rainwater, it may bring huge property losses to the people, and even put buildings and lives on the ground in danger, so it is necessary and important to provide an effective waterproof system for underground passages.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides an anti-flooding and anti-inversion drainage system for underground passages. Flood prevention drainage system.

The technical scheme that the present invention adopts is as follows:

The present invention is an anti-flooding and anti-inversion drainage system for an underground passage. The entire anti-flooding and anti-inversion drainage system is perpendicular to the passage direction of the underground passage and is arranged parallel to the length direction of the road (20). The inclination is kept the same, the entrance ground (1) of the underground passage is flush with the external road (20), and an appropriate safety distance is maintained; grooves (4) and water storage are excavated at the entrance ground (1) of the underground passage The concave land (15), the foot protection cover (2) and the vertical support (3) are arranged outside the groove (4), the vertical support (3) are distributed at equal intervals, the width L of the bottom surface of the water storage concave land (15) is the same as that of the foot pedal The bottom surface of the protective cover (2) has the same width, and the height of the water storage depression (15) is consistent with the height of the walkway (14); the water storage depression (15) is connected to the opening of the groove (4) correspondingly, and the groove ( 4) The inner wall and the water storage depression (15) are coated with a waterproof layer (5), and the bottom of the groove (4) is provided with a support rod (10) fixed on the bottom surface, and the support rod (10) is arranged at the opening of the groove (4) The anti-flooding water baffle (9) is hingedly connected, and the permeable protective cover (6) is connected with the anti-inverting water baffle (9) with a connecting line (11); There is a permeable protective cover (6), the specification of the permeable protective cover (6) is slightly wider than the groove (4) by 1-2cm, the lower part is provided with a rainwater filter layer (7), and the side wall is a rigid side wall water barrier (8 ), there is a certain space between the bottom of the secondary anti-flooding and anti-inverting device and the bottom of the groove (4), and it is connected with the sewer water inlet (12). The driving direction is the same; the first level anti-backflow device (19) is installed in the sewage discharge shaft (16), and the first-level anti-backflow device (19) is equipped with an anti-backflow baffle (9) and a connecting line (11).

Further, the rainwater filtering layer (7) is a floating body made of light-weight material with large volume and low density but with a certain filtering capacity.

Further, the side wall water deflector (8) is made of lightweight material with large volume, low density and certain rigidity.

Beneficial effects of the present invention:

The beneficial effect of the invention is that the structure is simple, no manual operation is required, the drainage speed can be adjusted according to the water volume, and the problem of untimely drainage in rainy days at the entrances of underground passages such as parking lots and underground shopping malls can be effectively solved.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing.

Fig. 1 is a vertical sectional schematic view of the present invention.

Fig. 2 is a top view structural schematic diagram of the present invention.

Fig. 3 is a schematic diagram of the A-A sectional structure of Fig. 1 of the present invention.

Fig. 4 is a schematic structural view of the side wall water deflector of the present invention when it has functioned.

Fig. 5 is a schematic structural view of the side wall water deflector of the present invention when it fully functions.

Fig. 6 is a detailed view of the secondary anti-flooding and anti-backflow device inside the groove of the present invention.

Fig. 7 is a detailed view of the primary anti-backflow device of the present invention.

In the figure, 1 is the ground at the entrance of the underground passage; 2 is the foot protection cover; 3 is the vertical support; 4 is the groove; 5 is the waterproof layer; 6 is the permeable protection cover; 7 is the rainwater filter layer; Water board; 9 is anti-inverting water baffle; 10 is support rod; 11 is connection line; 12 is sewer inlet; 13 is stairs; 14 is pedestrian passage; 15 is water storage depression; 16 is sewage shaft; 17 is sewer Branch road; 18 is the top surface of the underground passage; 19 is the primary anti-backflow device; 20 is the road.

detailed description

In order to further illustrate the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.

Example 1

As shown in Figures 1 and 3, the entire anti-flooding and anti-inversion drainage system is perpendicular to the direction of the underground passage and parallel to the length direction of the road 20; The road 20 is flush, and an appropriate safety distance is maintained. The groove 4 and the water storage depression 15 are excavated at the ground 1 of the entrance of the underground passage. The foot protection cover 2 and the vertical support 3 are arranged outside the groove 4. The vertical support 3 Distributed at equal intervals, the cross-sectional size of the water storage recesses 15 is consistent with the cross-sectional size of the foot protection cover 2, the height of the water storage recesses 15 is consistent with the height of the pedestrian passage 14, and the water storage recesses 15 are connected to the openings of the grooves 4 correspondingly. The inner wall of the groove 4 and the water storage recess 15 are all coated with a waterproof layer 5. The bottom of the groove 4 is provided with a support rod 10 fixed on the bottom surface. Cover 6 is connected with connecting wire 11 with anti-flooding baffle 9, reaches secondary anti-flooding anti-backward effect.

Example 2

As shown in Figure 3-5, a groove 4 is excavated on the ground 1 at the entrance of the underground passage, and a foot protection cover 2 and a vertical support 3 are installed outside the groove 4. The inner wall of the groove 4 is coated with a waterproof layer 5, and the bottom of the groove 4 is set Support rod 10, support rod 10 links to each other with the anti-backflow water barrier 9 that is arranged on the groove 4 openings, and the permeable protective cover 6 is connected with the anti-backflow water barrier 9 with connecting wire 11, thereby reaches anti-flooding anti-backflow effect.

Example 3

As shown in Figures 2 and 6, the upper part of the secondary anti-flooding and anti-backflow device is provided with a permeable protective cover 6, the specification of the permeable protective cover 6 is slightly wider than the specification of the groove 4 by 1-2cm, the lower part is provided with a rainwater filter layer 7, and the side wall is Rigid side wall water retaining plate 8, the bottom of the secondary anti-flooding and anti-backflow device has a certain space with the bottom of the groove 4, and is connected with the sewer water inlet 12. The sewer water inlet 12 has a certain slope, which is convenient for rainwater to flow smoothly along the sewer water inlet 12 The sewage shaft 16 is removed from the sewer branch road 17, and the pipeline direction of the sewer branch road 17 is consistent with the driving direction of the road. The first-level anti-backflow device 19 is arranged in the sewage shaft 16, and the first-level anti-backflow device 19 is still provided with an anti-backflow water baffle 9 and Connecting line 11, the detail structure principle is the same as the secondary anti-backflow device in the groove 4, and the first-level anti-backflow device 19 is the first line of defense to prevent sewage backflow in the sewer branch 17.

Example 4

As shown in Figures 4 and 5, rainwater enters the drainage system from the permeable protective cover 6, and the first-level anti-backflow device 19 first plays a role to ensure normal drainage work. If the water flow is too large, the first-level anti-backflow device 19 fails, and the water level continues to rise , as the water level in the groove 4 rises, the secondary anti-flooding and anti-inversion device rises simultaneously by means of buoyancy, and the connecting wire 11 on the permeable protective cover 6 drives the anti-inversion baffle 9 to gradually close, preventing the water level in the sewer 12 from being too high and exceeding Backflow occurs on the ground 1 of the entrance of the sewer; at this time, the side wall baffle 8 rises simultaneously with the secondary anti-flooding and anti-backflow device, and surrounds excess precipitation in the water storage depression 15, which acts as a short-term water retaining and anti-flooding function. It can pass through the pedestrian passage 14, the external road 20 is normally open to traffic, and the usability function is not interrupted. After the water level in the sewer 12 gradually decreases, the secondary anti-flooding and anti-inversion device slowly descends into the groove 4, and the anti-inversion water barrier 9 Open and the water flow is normal again.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (3)

1. An anti-flooding and anti-inversion drainage system for an underground passage, characterized in that: the entire anti-flooding and anti-inversion drainage system is perpendicular to the passage direction of the underground passage, and is arranged parallel to the length direction of the road (20), and the top surface of the underground passage (18) is preferentially connected to the The inclination of the stairs (13) remains the same, the underground passage entrance ground (1) is flush with the external road (20), and an appropriate safety distance is kept; the groove (4) is excavated at the underground passage entrance ground (1) ) and the water storage depression (15), the foot protection cover (2) and the vertical support (3) are arranged outside the groove (4), the vertical support (3) are equally spaced, the bottom surface width of the water storage depression (15) L is consistent with the width of the bottom surface of the foot protection cover (2), and the height of the water storage depression (15) is consistent with the height of the pedestrian passage (14); the water storage depression (15) is correspondingly connected with the opening of the groove (4) , the inner wall of the groove (4) and the water storage depression (15) are all coated with a waterproof layer (5), the bottom of the groove (4) is provided with a support rod (10) fixed on the bottom surface, and the support rod (10) is connected to the groove ( 4) The anti-flooding water baffle (9) at the opening is hingedly connected, and the permeable protective cover (6) is connected to the anti-flooding water baffle (9) with a connecting line (11); Rectangular, with a permeable protective cover (6) on the upper part, the specification of the permeable protective cover (6) is slightly wider than the groove (4) by 1-2cm, a rainwater filter layer (7) on the lower part, and a rigid side wall retaining wall The water plate (8), the bottom of the secondary anti-flooding and anti-backflow device has a certain space with the bottom of the groove (4), and is connected with the sewer water inlet (12), the sewer water inlet (12) has a certain slope, and the sewer branch (17) The direction of the pipeline is consistent with the driving direction of the road; the first-level anti-backflow device (19) is installed in the sewage shaft (16), and the first-level anti-backflow device (19) is equipped with an anti-backflow baffle (9) and a connecting line (11 ). 2. The anti-flooding and anti-backflow drainage system for underground passages according to claim 1, characterized in that: the rainwater filter layer (7) is a floating body made of light material with large volume and low density and certain filtering capacity. 3. The anti-flooding and anti-backflow drainage system for underground passages according to claim 1, characterized in that: the side wall water retaining plate (8) is made of light material with large volume, low density and certain rigidity.