Drainage blind drain for super-thick backfill area

Abstract

The utility model relates to the technical field of blind ditch drainage, in particular to an ultra-thick backfill area drainage blind ditch which comprises a soil layer and a blind ditch body, the blind ditch body is fixedly connected with the interior of the soil layer, water seepage holes are formed in the side wall of the blind ditch body, a cover plate is fixedly connected with the upper portion of the blind ditch body, and a drainage pipeline is fixedly connected with the side wall of the blind ditch body. Two sliding grooves are formed in the drainage pipeline, one of the sliding grooves is slidably connected with a first filter screen, and geotechnical cloth is fixedly connected to the side wall of the blind ditch. Water in the water-bearing layer is filtered through the geotechnical cloth and the water-permeable concrete super-thick backfill area, it is ensured that water can be effectively guided to flow into the blind ditch through the water seepage holes in the side wall of the blind ditch, the risks of ground subsidence and soil landslide are reduced, the first filter screen and the second filter screen can conduct double filtration on impurities in the water, and the water-permeable effect is improved. And blockage in the drainage pipeline is avoided, and the first filter screen and the second filter screen can be pulled out from the interior of the drainage pipeline to be replaced and cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of culvert drainage, in particular to a culvert drainage ditch in an ultra-thick backfill area. Background Art

[0002] When the groundwater level is high and the phreatic layer is not buried deep, drainage ditches or culverts can be used to intercept groundwater and lower the groundwater level. The bottom of the ditch should be buried in an impermeable layer. The drainage culvert is a bridge-shaped underground drainage ditch made of bricks or cement blocks. Compared with traditional open drainage ditches, drainage culverts can reduce surface water accumulation and surface runoff, thereby reducing the risk of ground subsidence and land sliding, and directing water and groundwater to drainage pipes for discharge.

[0003] After searching, a utility model patent with the publication number CN21723195U specifically discloses a new type of construction engineering pit foundation drainage ditch. The composition of this product includes: a construction engineering pit foundation, the outer circle of the construction engineering pit foundation is provided with a left drainage ditch, a front drainage ditch, a right drainage ditch, and a rear drainage ditch, a left baffle is arranged on the outer side of the left drainage ditch, and the bottom of the left baffle is connected to a group of triangular ground-inserted rods, and the triangular ground-inserted rods are inserted under the drainage ditch, a front baffle is arranged on the outer side of the front drainage ditch, and the bottom of the front baffle is connected to a group of triangular ground-inserted rods, a right baffle is arranged on the outer side of the right drainage ditch, and the bottom of the right baffle is connected to a group of triangular ground-inserted rods, and a rear baffle is arranged on the outer side of the rear drainage ditch, and the bottom of the rear baffle is connected to a group of triangular ground-inserted rods. This utility model is used for construction engineering pit foundation drainage ditch.

[0004] The above patent solves the problem of unobstructed drainage of the culvert, but there are still problems such as internal blockage causing poor drainage and water backflow in the waterway. Therefore, it is necessary to invent a super-thick backfill area drainage culvert to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a drainage ditch in an ultra-thick backfill area, which filters water from the aquifer through geotextile and permeable concrete in an ultra-thick backfill area to ensure that water can be effectively guided to flow through the seepage holes on the side walls of the ditch to the interior of the ditch, thereby reducing the risk of ground subsidence and soil landslides. Filter mesh one and filter mesh two can perform double filtration on impurities in the water flow, and filter mesh one and filter mesh two can be drawn out from the inside of the drainage pipe for replacement and cleaning, so as to solve the problem of poor drainage and backflow of water in the waterway caused by internal blockage in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drainage ditch in an ultra-thick backfill area, comprising a soil layer and a ditch, wherein the soil layer is fixedly connected to the inside of the ditch, the side wall of the ditch is provided with seepage holes, a cover plate is fixedly connected to the top of the ditch, the side wall of the ditch is fixedly connected to a drainage pipe, two slide grooves are arranged inside the drainage pipe, one of the slide grooves is slidably connected to a filter net, the side wall of the ditch is fixedly connected to a geotextile, the side wall of the geotextile is fixedly connected to permeable concrete, and the side wall of the ditch is fixedly connected to a layer of rammed earth.

[0007] Preferably, two rammed earth layers are fixedly connected above the culvert, three rammed earth layers are fixedly connected above the two rammed earth layers, the inner wall of the drainage pipe is detachably connected to a pourer via screws, and the side wall of the pourer is fixedly connected to a rubber mold.

[0008] Preferably, a second notch is left between the rubber mold and the pourer, a first notch is opened at the end of the pourer, and the second notch is connected to the drainage pipe.

[0009] Preferably, the interior of the other chute is slidably connected with a second filter screen, the number of the geotextiles is two, and the two geotextiles are symmetrically distributed with the culvert as the axis of symmetry.

[0010] Preferably, the number of the permeable concrete is two, and the two permeable concrete are symmetrically distributed with the culvert as the symmetry axis.

[0011] Preferably, the seepage holes are at least 200 mm higher than the soil layer, and there are multiple seepage holes, which are evenly distributed on the side walls of the culvert.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] 1. Through the culvert, seepage holes, geotextile and permeable concrete, the underground concentrated water flow is discharged. The water in the aquifer is filtered through the geotextile and the ultra-thick backfill area of ​​the permeable concrete to ensure that the water can be effectively guided to flow through the seepage holes on the side wall of the culvert to the inside of the culvert, reducing the risk of ground subsidence and soil landslide. Filter mesh 1 and filter mesh 2 can double filter the impurities in the water flow to avoid blockage inside the drainage pipe. Filter mesh 1 and filter mesh 2 can be pulled out from the inside of the drainage pipe for replacement and cleaning;

[0014] 2. It is convenient to discharge water through drainage pipes and backflow devices. The backflow device adjusts the internal water pressure to achieve balance. When the water in the waterway is higher than the water level in the drainage pipe, the backflow device and the rubber mold play a role in preventing backflow. The water is discharged into the waterway and guided to the sewage treatment plant. After purification, it can be used for farmland irrigation, landscape water filling and other purposes. It can not only reduce the development of groundwater, but also save water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;

[0019] Figure 4 The utility model is a schematic diagram of the connection structure between the drainage pipe and the backflow device.

[0020] Description of reference numerals:

[0021] 1. Soil layer; 2. Culvert; 3. Seepage hole; 4. Cover plate; 5. Drainage pipe; 6. Chute; 7. Filter net 1; 8. Geotextile; 9. Permeable concrete; 10. First rammed earth layer; 11. Second rammed earth layer; 12. Third rammed earth layer; 13. Backflow device; 14. Rubber mold; 15. Slot 1; 16. Slot 2; 17. Filter net 2. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model provides Figure 1-4 The shown embodiment shows a drainage ditch in an ultra-thick backfill area, comprising a soil layer 1 and a ditch 2, wherein the soil layer 1 is fixedly connected to the interior of the ditch 2, a seepage hole 3 is provided on the side wall of the ditch 2, a cover plate 4 is fixedly connected to the top of the ditch 2, a drainage pipe 5 is fixedly connected to the side wall of the ditch 2, two slide grooves 6 are arranged inside the drainage pipe 5, one of the slide grooves 6 is slidably connected to a filter screen 7, a geotextile 8 is fixedly connected to the side wall of the geotextile 8, a permeable concrete 9 is fixedly connected to the side wall of the geotextile 8, a rammed earth layer 10 is fixedly connected to the side wall of the ditch 2, when the outer wall of the ditch 2 contacts the aquifer, water will be filtered through the geotextile 8 and the permeable concrete 9, and the water will reach the interior of the ditch 2 from the seepage hole 3, and because the ditch 2 is inclined, the water will flow into the drainage pipe 5.

[0024] A second layer of rammed earth 11 is fixedly connected above the culvert 2, a third layer of rammed earth 12 is fixedly connected above the second layer of rammed earth 11, an inner wall of the drainage pipe 5 is detachably connected to a backflow device 13 by screws, a side wall of the backflow device 13 is fixedly connected to a rubber mold 14, the backflow device 13 adjusts the internal water pressure to achieve balance, and when the waterway is higher than the water level of the drainage pipe 5, the rubber mold 14 plays a role in preventing backflow.

[0025] A second notch 16 is left between the rubber mold 14 and the pouring device 13. A first notch 15 is opened at the end of the pouring device 13. The second notch 16 is connected to the drainage pipe 5. The water in the drainage pipe 5 is discharged to the waterway through the second notch 16.

[0026] Another chute 6 is internally slidably connected with a filter screen 17. There are two geotextiles 8, which are symmetrically distributed with the ditch 2 as the axis of symmetry. Water and impurities are filtered out through the filter screen 1 7 and the filter screen 2 17. The geotextile 8 can prevent soil loss and erosion.

[0027] The number of the permeable concrete 9 is two, and the two permeable concrete 9 are symmetrically distributed with the dark ditch 2 as the symmetry axis, effectively permeating water and having good drainage performance.

[0028] The seepage holes 3 are at least 200 mm higher than the soil layer 1 . There are multiple seepage holes 3 , which are evenly distributed on the side wall of the culvert 2 . The seepage holes 3 guide water to the inside of the culvert 2 .

[0029] The utility model works as follows: the bottom of the soil layer 1 is buried in the impermeable layer, and the seepage hole 3 should be 200mm higher than the bottom of the soil layer 1. When the outer wall of the culvert 2 contacts the aquifer, the water will be filtered through the geotextile 8 and the permeable concrete 9, and the water will reach the inside of the culvert 2 from the seepage hole 3. Because the culvert 2 is set at an angle, the water will flow into the drainage pipe 5. The water flow contains large particles to prevent congestion inside the drainage pipe 5. The water and impurities are filtered by the filter mesh 1 7 and the filter mesh 2 17, and the impurities are collected and processed centrally. The water is discharged from the mouth of the slot 15 through the slot 2 16. The water flows into the water collection system and is guided to the sewage treatment plant through the waterway. After purification, it can be used for farmland irrigation, landscape water filling and other purposes. It can not only reduce the development of groundwater, but also save water resources.

[0030] When the water pressure in the waterway is higher than that in the drainage pipe 5, water will flow back into the drainage pipe 5, causing overflow. The backflow device 13 adjusts the internal water pressure to achieve balance. When the waterway is higher than the water level of the drainage pipe 5, the rubber mold 14 plays a role in preventing backflow.

[0031] The first rammed earth layer 10, the second rammed earth layer 11 and the third rammed earth layer 12 are compacted by a tamping machine, and are compacted layer by layer evenly without leaving any gaps, thereby improving the bearing capacity and stability of the land.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A drainage culvert in an ultra-thick backfill area, comprising a soil layer (1) and a culvert (2), characterized in that: A culvert (2) is fixedly connected to the interior of the soil layer (1), a seepage hole (3) is provided on the side wall of the culvert (2), a cover plate (4) is fixedly connected to the top of the culvert (2), a drainage pipe (5) is fixedly connected to the side wall of the culvert (2), two slide grooves (6) are arranged inside the drainage pipe (5), one of the slide grooves (6) is slidably connected to a filter screen (7), a geotextile (8) is fixedly connected to the side wall of the culvert (2), a permeable concrete (9) is fixedly connected to the side wall of the geotextile (8), and a rammed earth layer (10) is fixedly connected to the side wall of the culvert (2).

2. The ultra-thick backfill area drainage culvert according to claim 1, characterized in that: A second rammed earth layer (11) is fixedly connected above the culvert (2), a third rammed earth layer (12) is fixedly connected above the second rammed earth layer (11), an inner wall of the drainage pipe (5) is detachably connected to a backflow device (13) via screws, and a rubber mold (14) is fixedly connected to the side wall of the backflow device (13).

3. The ultra-thick backfill area drainage ditch according to claim 2, characterized in that: A second notch (16) is left between the rubber mold (14) and the pouring device (13), a first notch (15) is provided at the end of the pouring device (13), and the second notch (16) is connected to the drainage pipe (5).

4. The ultra-thick backfill area drainage ditch according to claim 1, characterized in that: The interior of the other chute (6) is slidably connected to a second filter screen (17), and the number of the geotextiles (8) is two, and the two geotextiles (8) are symmetrically distributed with the ditch (2) as the axis of symmetry.

5. The ultra-thick backfill area drainage culvert according to claim 1, characterized in that: The number of the permeable concrete (9) is two, and the two permeable concretes (9) are symmetrically distributed with the culvert (2) as the symmetry axis.

6. The ultra-thick backfill area drainage culvert according to claim 1, characterized in that: The seepage holes (3) are at least 200 mm higher than the soil layer (1), there are a plurality of the seepage holes (3), and the plurality of the seepage holes (3) are evenly spaced on the side wall of the culvert (2).

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