CN115162386A - Assembly type open drain pit structure capable of effectively reducing precipitation sand content - Google Patents
Assembly type open drain pit structure capable of effectively reducing precipitation sand content Download PDFInfo
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- CN115162386A CN115162386A CN202210701082.7A CN202210701082A CN115162386A CN 115162386 A CN115162386 A CN 115162386A CN 202210701082 A CN202210701082 A CN 202210701082A CN 115162386 A CN115162386 A CN 115162386A
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- sand content
- precipitation
- vertical
- open drain
- bottom plate
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- 238000001556 precipitation Methods 0.000 title claims abstract description 28
- 239000004576 sand Substances 0.000 title claims abstract description 22
- 239000011380 pervious concrete Substances 0.000 claims abstract description 39
- 239000004567 concrete Substances 0.000 claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000012466 permeate Substances 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 239000004746 geotextile Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/22—Lining sumps in trenches or other foundation pits
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sewage (AREA)
Abstract
The invention discloses an assembled open drain pit structure capable of effectively reducing the sand content of rainfall, which comprises a pit body framework, wherein a permeable concrete vertical plate and a permeable concrete bottom plate are arranged on the pit body framework, a barrier is assembled between the permeable concrete vertical plate of a vertical surface and the permeable concrete bottom plate of a bottom surface to form a rainfall pit with an upper opening, a vertical surface composite filter screen positioned on the vertical surface of the permeable concrete vertical plate is arranged on the pit body framework, and a bottom surface composite filter screen positioned on the bottom surface of the permeable concrete bottom plate is arranged on the pit body framework. The invention has the beneficial effects that: and the effect is better due to the arrangement of multi-layer filtering. Even if the outer filter screen is partially failed, the middle pervious concrete can also play a role in filtering, the higher strength of the middle pervious concrete can also effectively protect the inner filter screen, and the overall quality is stable and reliable; the sand content of the precipitation is obviously reduced, the undisturbed soil of the basement can be effectively ensured not to be disturbed, and the quality and potential safety hazard are further eliminated; the assembly structure is adopted, so that the assembly and disassembly are simple, and the field implementation is convenient.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to an assembled open drain pit structure capable of effectively reducing precipitation and sand content.
Background
In the engineering construction process, the foundation excavation elevation is often set below the groundwater level line, and the groundwater level is not obviously higher than the foundation bottom, or under the condition that effective precipitation measures such as well point precipitation are not designed, the surface water content of a soil layer is drained by adopting an open drainage method to achieve the basic condition of foundation construction.
The common surface drainage method generally adopts the modes of simply excavating a precipitation pit or building a pit body by brick sand after excavation, and the like, so that a large amount of silt is very easy to extract in the surface drainage process, and the structure of a foundation soil layer is easy to damage. To the region that closes on the structure basis, adopt this kind of mode easily to cause basement original state soil to receive the disturbance, the foundation bearing capacity is not enough to cause the structure atress uneven, easily produces great quality, potential safety hazard.
Disclosure of Invention
The invention aims to: the invention provides an assembled open drain pit structure capable of effectively reducing the sand content of rainfall by combining with the actual situation of a field, solves the problems that the sediment is easily extracted and the soil layer structure is damaged in the rainfall by the existing open drain method, can effectively filter aggregate such as the sediment in a water body, reduces the sand content of the rainfall, ensures that the undisturbed soil of a substrate is not influenced, and further eliminates the quality and potential safety hazards. Can be recycled after being used, can be used for multiple times, and saves manpower and materials used in the traditional masonry construction. Overall, be favorable to structure quality control, safety control and energy-concerving and environment-protective work.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an effectively reduce assembled bright row of pit structure of precipitation sand content, includes hole body skeleton, is equipped with the concrete riser that permeates water and the concrete bottom plate that permeates water on the hole body skeleton, assembles between the concrete riser that permeates water of facade and the concrete bottom plate that permeates water of bottom surface and encloses the fender and form the upper shed precipitation pit, is equipped with the compound filter screen of facade that is located the concrete riser facade that permeates water on the hole body skeleton, is equipped with the compound filter screen in bottom surface that is located the concrete bottom plate bottom surface that permeates water on the hole body skeleton.
Furthermore, the pervious concrete vertical plate, the pervious concrete bottom plate, the vertical composite filter screen and the bottom composite filter screen can be detachably arranged on the pit body framework.
Furthermore, a framework hanging ring is arranged on the pit body framework.
Furthermore, the pervious concrete vertical plate is provided with a vertical plate hanging ring, and the pervious concrete bottom plate is provided with a bottom plate hanging ring.
Furthermore, the length of the embedded steel bar of the vertical plate hanging ring extending into the pervious concrete vertical plate is not less than half of the height of the vertical plate, and a bend is arranged at the bottom end of the embedded steel bar.
Furthermore, the facade composite filter screen and the bottom composite filter screen both comprise inner and outer steel wire meshes and a middle layer of geotextile.
Further, pit skeleton include interior square frame and outer square frame, the under shed of interior square frame is equipped with the under shed bracing piece, be connected with the diagonal angle connecting rod between the end angle of interior square frame and outer square frame, interior square frame, form riser installation space between outer square frame and the diagonal angle connecting rod, form bottom plate installation space between interior square frame and the under shed bracing piece, the concrete riser that permeates water of isosceles trapezoid cross-section is placed in riser installation space, the concrete bottom plate that permeates water of square terminal surface is placed in bottom plate installation space.
Furthermore, the inner square frame is formed by welding rectangular pipes positioned on twelve sides of the square.
Furthermore, the outer square frame is formed by welding rectangular pipes positioned on twelve side edges of the square.
Furthermore, framework hanging rings are arranged on the upper portions of two end corners of one diagonal line of the inner square frame, and framework hanging rings are arranged on the upper portions of two end corners of the other diagonal line of the outer square frame.
The invention has the beneficial effects that:
1. and the effect is better due to the arrangement of multi-layer filtering. Even if the outer filter screen is partially failed, the middle pervious concrete can also play a role in filtering, the higher strength of the middle pervious concrete can also effectively protect the inner filter screen, and the whole quality is stable and reliable.
2. The sand content of the precipitation is obviously reduced, the undisturbed soil of the basement can be effectively ensured not to be disturbed, and the quality and the potential safety hazard are further eliminated.
3. The assembly structure is adopted, the assembly and disassembly are simple, and the field implementation is convenient.
4. This structure is more saved manual work and material consumption than traditional brick structure, helps environmental protection work.
5. The structure can be used for multiple times, and has higher utilization rate compared with the traditional construction method.
6. The structure material is easy to recover, convenient to treat and reuse, and green and environment-friendly.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic diagram of the pit skeleton structure of the present invention.
Fig. 3 is a schematic structural view of a pervious concrete riser of the present invention.
Fig. 4 is a schematic structural view of a pervious concrete floor of the present invention.
Fig. 5 is a schematic view of the installation procedure of the present invention.
In the figure: 1-pit skeleton, 2-pervious concrete vertical plate, 3-pervious concrete bottom plate, 4-facade composite filter screen, 5-bottom composite filter screen and 6-dewatering pit; 101-inner square frame, 102-outer square frame, 103-lower opening support rod, 104-diagonal connecting rod and 105-skeleton lifting ring; 201-vertical plate hoisting rings; 301-base plate suspension ring.
Detailed Description
The following non-limiting examples serve to illustrate the invention.
Example 1:
referring to fig. 1 to 5, an assembled open drain pit structure for effectively reducing the precipitation sand content comprises a pit body framework 1, a pervious concrete vertical plate 2, a pervious concrete bottom plate 3, a vertical composite filter screen 4 and a bottom composite filter screen 5.
The pit skeleton 1 comprises an inner cube frame 101, an outer cube frame 102, a lower opening support rod 103, a diagonal connection rod 104 and a skeleton hanging ring 105. The inner square frame 101 is formed by welding 50X 2mm rectangular tubes positioned on twelve sides of the square, and the outer square frame 102 is formed by welding 50X 2mm rectangular tubes positioned on twelve sides of the square.
The lower open welding of interior square frame 101 has lower open bracing piece 103, and lower open bracing piece 103 is the X column structure of diagonal for support the concrete bottom plate 3 that permeates water. The diagonal connecting rods 104 are welded between the end corners of the inner cube frame 101 and the outer cube frame 102, and the diagonal connecting rods 104 are used for connecting the inner cube frame and the outer cube frame into a whole and dividing the space between the inner cube frame and the outer cube frame in a shape like the Chinese character 'hui'.
Vertical plate installation spaces are formed among the inner square frame 101, the outer square frame 102 and the diagonal connecting rods 104, the diagonal connecting rods 104 divide the space in a shape like a Chinese character 'hui' into four parts, a pervious concrete vertical plate 2 can be placed in each part, and the pervious concrete vertical plates 2 with isosceles trapezoid cross sections are placed in the vertical plate installation spaces.
A bottom plate installation space is formed between the inner square frame 101 and the lower opening support rod 103, the pervious concrete bottom plate 3 with the square end face is placed in the bottom plate installation space, and the lower opening is blocked by the pervious concrete bottom plate 3.
The upper parts of two end corners of one diagonal line of the inner square frame 101 are welded with framework hanging rings 105 with the diameter phi of 18mm, the upper parts of two end corners of the other diagonal line of the outer square frame 102 are welded with framework hanging rings 105 with the diameter phi of 18mm, and the framework hanging rings 105 are convenient for hoisting the pit framework 1.
The four permeable concrete vertical plates 2 of the vertical surface and one permeable concrete bottom plate 3 of the bottom surface are assembled to form the enclosure, and the permeable concrete bottom plate 3 is also positioned between the four permeable concrete vertical plates 2, so that an upper-opening precipitation pit 6 is formed, and the permeable concrete vertical plates are utilized to filter precipitation.
The pit body framework 1 is provided with a vertical surface composite filter screen 4 positioned on the inner vertical surface and the outer vertical surface of the pervious concrete vertical plate 2, the pit body framework 1 is provided with a bottom surface composite filter screen 5 positioned on the bottom surface of the pervious concrete bottom plate 3, and the composite filter screen is used for filtering rainfall.
The precipitation carries out the infiltration by outer to interior and filters, through setting up multilayer filtration, concrete slab and compound filter screen permeate water promptly, reduces precipitation sand content, can effectively guarantee that basement original state soil does not receive the disturbance.
The pervious concrete vertical plate 2, the pervious concrete bottom plate 3, the vertical composite filter screen 4 and the bottom composite filter screen 5 can be detachably arranged on the pit body framework 1, so that the on-site dismounting is facilitated, and the construction steps are simplified. During installation, the composite filter screens 4 on the four vertical faces of the inner cube frame 101 and the four vertical faces of the outer cube frame 102 are installed, then the composite filter screen 5 on the bottom face of the outer cube frame 102 is installed, the composite filter screen 5 on the bottom face covers the bottom face of the inner cube frame 101 at the same time, then the pervious concrete bottom plate 3 is installed at the bottom of the inner cube frame 101, and the four pervious concrete vertical plates 2 are installed between the inner and outer cube frames.
The vertical surface composite filter screen 4 and the bottom surface composite filter screen 5 both comprise inner and outer steel wire meshes and middle geotextiles, and the filtering effect on precipitation is realized. The inner layer and the outer layer are made of steel wire meshes, the number of the meshes is less than or equal to 20mm, and the diameter of the meshes is more than or equal to 1mm. The intermediate level sets up one deck geotechnological cloth, the unit area quality: not less than 200g/m 2 And the tearing strength is more than or equal to 0.16kN.
The thickness of the pervious concrete vertical plate 2 is more than or equal to 200mm, wherein the coarse aggregate adopts a single particle size fraction with a smaller particle size (5-15 mm), the aggregate with a particle size larger than 15mm is controlled within 5%, and the maximum particle size is not more than 20mm. The aggregate pores are smaller than common crushed stones, so that the aggregate in the water can be filtered effectively; the strength grade of the cement is more than 32.5, and the dosage is 250-400 kg/m 3 In the range, a certain amount of reinforcing agent is added, which is beneficial to improving the interface strength of cement paste and aggregate and realizing the filtration effect on precipitation.
The thickness of the pervious concrete bottom plate 3 is more than or equal to 200mm, and the bottom plate concrete structure material is of the same vertical plate structure.
Have buried riser rings 201 on the concrete riser 2 that permeates water, have buried bottom plate rings 301 on the concrete bottom plate 3 that permeates water, conveniently hoist the operation to the concrete slab that permeates water through riser rings 201 and bottom plate rings 301. Set up a diameter phi 18mm riser rings 201 on the pervious concrete riser 2, the length that the embedding reinforcing bar of riser rings 201 stretched into pervious concrete riser 2 is not less than half the riser height, and the bottom of embedding reinforcing bar sets up 90 and buckles, and length of buckling is not less than 300mm, guarantees hoist and mount stability. The pervious concrete bottom plate 3 is provided with two bottom plate hoisting rings 301 with the diameter phi 18, so that the hoisting is convenient.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are examples of what the invention can employ and claim. In the scheme of the invention, each selection example can be arbitrarily combined with any other basic example and selection example.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. The utility model provides an effectively reduce open drain pit structure of assembled of precipitation sand content, includes pit body skeleton (1), its characterized in that: the pit body framework (1) is provided with a pervious concrete vertical plate (2) and a pervious concrete bottom plate (3), the pervious concrete vertical plate (2) of the vertical surface and the pervious concrete bottom plate (3) of the bottom surface are assembled and surrounded to form a precipitation pit (6) with an upper opening, the pit body framework (1) is provided with a vertical surface composite filter screen (4) located on the vertical surface of the pervious concrete vertical plate (2), and the pit body framework (1) is provided with a bottom surface composite filter screen (5) located on the bottom surface of the pervious concrete bottom plate (3).
2. The fabricated open drain pit structure effective in reducing the sand content of precipitation of claim 1, wherein: the vertical pervious concrete plates (2), the bottom pervious concrete plates (3), the vertical composite filter screens (4) and the bottom composite filter screens (5) are detachably arranged on the pit body framework (1).
3. The fabricated open drain pit structure effective in reducing precipitation sand content of claim 1 or 2, wherein: and a framework hanging ring (105) is arranged on the pit body framework (1).
4. The fabricated open drain pit structure effective in reducing the sand content of precipitation of claim 1 or 2, wherein: the vertical permeable concrete plate (2) is provided with a vertical plate hanging ring (201), and the bottom plate hanging ring (301) is arranged on the concrete bottom plate (3).
5. The fabricated open drain pit structure effective in reducing the sand content of precipitation of claim 4, wherein: the length of the embedded steel bar of the vertical plate hanging ring (201) extending into the pervious concrete vertical plate (2) is not less than half of the height of the vertical plate, and a bend is arranged at the bottom end of the embedded steel bar.
6. The fabricated open drain pit structure effective in reducing precipitation sand content of claim 1 or 2, wherein: the facade composite filter screen (4) and the bottom composite filter screen (5) both comprise inner and outer steel wire meshes and middle geotextile.
7. The fabricated open drain pit structure effective in reducing the sand content of precipitation of claim 1 or 2, wherein: pit body skeleton (1) including interior square frame (101) and outer square frame (102), the under shed of interior square frame (101) is equipped with under shed bracing piece (103), be connected with diagonal angle connecting rod (104) between the end angle of interior square frame (101) and outer square frame (102), interior square frame (101), form riser installation space between outer square frame (102) and diagonal angle connecting rod (104), form bottom plate installation space between interior square frame (101) and under shed bracing piece (103), the concrete riser (2) that permeates water of isosceles trapezoid cross-section is placed in riser installation space, the concrete bottom plate (3) that permeates water of square terminal surface are placed in bottom plate installation space.
8. The fabricated open drain pit structure for effectively reducing precipitation sand content of claim 7, wherein: the inner cube frame (101) is formed by welding rectangular pipes positioned on twelve side edges of the cube.
9. The fabricated open drain pit structure for effectively reducing precipitation sand content of claim 7, wherein: the outer cube frame (102) is formed by welding rectangular pipes positioned on twelve side edges of the cube.
10. The fabricated open drain pit structure for effectively reducing precipitation sand content of claim 7, wherein: the upper parts of two end angles of a diagonal line of the inner square frame (101) are provided with skeleton lifting rings (105), and the upper parts of two end angles of the other diagonal line of the outer square frame (102) are provided with skeleton lifting rings (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210701082.7A CN115162386A (en) | 2022-06-21 | 2022-06-21 | Assembly type open drain pit structure capable of effectively reducing precipitation sand content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210701082.7A CN115162386A (en) | 2022-06-21 | 2022-06-21 | Assembly type open drain pit structure capable of effectively reducing precipitation sand content |
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| Publication Number | Publication Date |
|---|---|
| CN115162386A true CN115162386A (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210701082.7A Pending CN115162386A (en) | 2022-06-21 | 2022-06-21 | Assembly type open drain pit structure capable of effectively reducing precipitation sand content |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2018188799A (en) * | 2017-04-28 | 2018-11-29 | 大成建設株式会社 | Water discharge sump and sump water discharge method |
| CN210216459U (en) * | 2019-07-03 | 2020-03-31 | 罗建林 | Complicated geological conditions foundation ditch falls drainage soil body protection and hinders mud protection cage that permeates water |
| CN210597544U (en) * | 2019-07-20 | 2020-05-22 | 江苏懿必合建筑结构优化有限公司 | Automatic water-drinking filtering type integral pipeline for pouring soil and construction waste and pipe well thereof |
| CN210621728U (en) * | 2019-04-08 | 2020-05-26 | 上海宝冶集团有限公司 | Collection drainage system inside foundation pit |
| CN211143104U (en) * | 2019-08-07 | 2020-07-31 | 中煤第三建设（集团）有限责任公司 | Precipitation well arranged at bottom of underground diaphragm wall |
| CN112195946A (en) * | 2020-10-30 | 2021-01-08 | 中国二十冶集团有限公司 | Filtering type foundation pit local dewatering device and using method thereof |
| CN214614149U (en) * | 2021-03-26 | 2021-11-05 | 中交隧道工程局有限公司 | Processing structure of soft soil foundation deep basal pit precipitation |
| CN217758890U (en) * | 2022-06-21 | 2022-11-08 | 中国五冶集团有限公司 | Assembly type open drain pit structure capable of effectively reducing precipitation sand content |
-
2022
- 2022-06-21 CN CN202210701082.7A patent/CN115162386A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018188799A (en) * | 2017-04-28 | 2018-11-29 | 大成建設株式会社 | Water discharge sump and sump water discharge method |
| CN210621728U (en) * | 2019-04-08 | 2020-05-26 | 上海宝冶集团有限公司 | Collection drainage system inside foundation pit |
| CN210216459U (en) * | 2019-07-03 | 2020-03-31 | 罗建林 | Complicated geological conditions foundation ditch falls drainage soil body protection and hinders mud protection cage that permeates water |
| CN210597544U (en) * | 2019-07-20 | 2020-05-22 | 江苏懿必合建筑结构优化有限公司 | Automatic water-drinking filtering type integral pipeline for pouring soil and construction waste and pipe well thereof |
| CN211143104U (en) * | 2019-08-07 | 2020-07-31 | 中煤第三建设（集团）有限责任公司 | Precipitation well arranged at bottom of underground diaphragm wall |
| CN112195946A (en) * | 2020-10-30 | 2021-01-08 | 中国二十冶集团有限公司 | Filtering type foundation pit local dewatering device and using method thereof |
| CN214614149U (en) * | 2021-03-26 | 2021-11-05 | 中交隧道工程局有限公司 | Processing structure of soft soil foundation deep basal pit precipitation |
| CN217758890U (en) * | 2022-06-21 | 2022-11-08 | 中国五冶集团有限公司 | Assembly type open drain pit structure capable of effectively reducing precipitation sand content |
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