CN114086584A - Cleanable double-pipe inclined drainage pipe structure and construction method thereof - Google Patents
Cleanable double-pipe inclined drainage pipe structure and construction method thereof Download PDFInfo
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- CN114086584A CN114086584A CN202111409389.1A CN202111409389A CN114086584A CN 114086584 A CN114086584 A CN 114086584A CN 202111409389 A CN202111409389 A CN 202111409389A CN 114086584 A CN114086584 A CN 114086584A
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- 238000010276 construction Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 238000001914 filtration Methods 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims abstract description 33
- 238000004873 anchoring Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims description 24
- 230000006698 induction Effects 0.000 claims description 12
- 230000003139 buffering effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- 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
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a cleanable double-pipe inclined drainage pipe structure and a construction method thereof, wherein the cleanable double-pipe inclined drainage pipe structure comprises the following steps: the method comprises the following steps that a drill hole is formed in a side slope on the side edge of a surface drainage ditch, a water filtering outer pipe is arranged in the drill hole, a drainage inner pipe is arranged in the drainage outer pipe, geotechnical water filtering materials are wrapped outside the drainage outer pipe, a transition pipe is arranged at the outer end of the drainage inner pipe, two sides of the outer end of the transition pipe are connected with anchoring ends, the anchoring ends are installed on the side slope, and a plurality of anchoring ribs which correspond to the anchoring ends in position and are connected with the anchoring ends are arranged on the side slope; compared with the prior art, the invention has the following advantages: by adopting a double-pipe system, collected water is timely drained by utilizing the movable drainage inner pipe, and meanwhile, the drainage inner pipe can be periodically pumped out for cleaning and maintenance, so that the hidden danger of blocking in the pipe is fundamentally eliminated, and the working reliability of the inclined drainage pipe is improved.
Description
Technical Field
The invention relates to the technical field of side slope drainage and field construction, in particular to a cleanable double-pipe inclined drainage pipe structure and a construction method thereof.
Background
The landslide control is the key point of slope engineering research at home and abroad, and the existing documents are integrated to discover that the rainy season is a high-frequency period for generating landslide accidents, and the infiltration of rainwater is a key factor for inducing a plurality of landslides; the inclined drain hole is used as the most common drilling drainage system, has the advantages of low manufacturing cost, convenient construction, strong applicability and the like, and is suitable for reducing the underground water level of a side slope; by utilizing the strong water guiding function of the holes, water in the soil body flows to the drain pipe through the civil filtered water material and is freely discharged out of the side slope under the action of gravity; however, engineering practices show that the inclined drain pipe has the clogging problem, as time goes on, local soil on the side slope is lost, animals nest in the drain pipe, or roots of partial plants are extended, and the like, so that the drain pipe is likely to be clogged, the clogging problem can seriously affect the working benefit of the drain pipe, even recharging is likely to be generated, and great potential safety hazard is caused to the stability of the side slope.
Although the existing method for preventing and treating the clogging of the oblique drain pipe comprises the steps of adding fiber bundles, filters and other devices in the drain pipe, the cost is high in most cases, the filters are difficult to replace and clean regularly, and particularly the difficulty in dredging the blockage generated at a deeper part is very high.
Therefore, it is necessary to optimize the structure of the existing inclined drain pipe, so that the existing inclined drain pipe can be cleaned and maintained regularly in service, the blockage in the pipe is avoided, and the working durability of the drain pipe is improved.
Disclosure of Invention
The invention aims to overcome the defects of the existing oblique drainage pipe structure, and provides a cleanable double-pipe oblique drainage pipe structure and a construction method thereof, so as to effectively solve the problems that the traditional oblique drainage pipe is easy to block and complicated to maintain.
The invention is realized by the following technical scheme:
the cleanable double-pipe inclined drain pipe is characterized by comprising a hole drilled in a side slope on the side of a surface drainage ditch, an outer water filtering pipe arranged in the hole drilled, an inner water drainage pipe arranged in the outer water filtering pipe, a geotechnical water filtering material wrapped outside the outer water filtering pipe, a transition pipe arranged at the outer end of the inner water drainage pipe, anchoring ends connected to two sides of the outer end of the transition pipe, and a plurality of anchoring ribs corresponding to and connected with the anchoring ends in position;
the specific integral detachable structure of the drainage inner pipe comprises a transition pipe connected to the outer end, and an induction rod core which is embedded in the transition pipe in a penetrating manner and is installed in the drainage inner pipe, wherein the induction rod core is waterproof and sealed intelligent induction equipment, and a control plate, a signal transmission module, a dry battery module, a positioning sensor, a vibration sensor and a pressure sensor are arranged in the induction rod core;
the drainage inner pipe is of a double-wall structure, buffering materials are filled between the double walls, the buffering materials are wrapped on the periphery of the outer wall, and a plurality of water permeable holes are correspondingly formed in the corresponding positions of the double walls of the drainage inner pipe and the buffering materials.
Preferably, the slope is provided with drilled holes, and the elevation angle of the drilled holes is set to 5-15 °.
Preferably, a plurality of water permeable holes are formed in the water filtering outer pipe and the water drainage inner pipe, and the water filtering outer pipe and the water drainage inner pipe are both PVC pipes with upper half parts and lower half parts being closed.
Preferably, the drainage inner pipe is embedded in the water filtering outer pipe and can move, and the outer diameter of the drainage inner pipe is smaller than the inner diameter of the water filtering outer pipe.
Preferably, the drainage inner pipe is connected with the transition pipe in a threaded connection mode, and the transition pipe is connected with the anchoring end in a mechanical buckling mode.
Preferably, the transition pipe is made of steel and is a thin-wall steel pipe.
A construction method capable of cleaning a double-pipe inverted inclined drainage pipe structure comprises the following steps:
step S1, leveling the field, and entering the field by a drilling machine;
step S2, field measurement lofting is carried out, and the drilling point and the incident angle of the drainage pipe slope surface are determined;
step S3, installing the drilling machine, and calibrating the azimuth angle and the elevation angle of the drilling machine;
step S4, drilling, cleaning holes, wrapping the outer pipe with geotechnical water filtering material and installing the water filtering outer pipe;
step S5, installing an anchoring end;
step S6, installing a drainage inner pipe and a transition pipe;
step S7, fixing the transition pipe;
and step S8, cleaning the site.
Compared with the prior art, the invention has the following advantages:
the double-pipe type upward-inclined drainage pipe structure with the inner drainage pipe capable of being taken out and cleaned is designed, so that the purpose of draining water on the side slope is achieved, the double-pipe type upward-inclined drainage pipe structure can effectively drain rainwater infiltrated into the side slope in target engineering, the working efficiency and the durability of the drainage pipe are improved, the recharge of the infiltrated water can be effectively prevented, and the stability and the reliability of the side slope are greatly improved.
Drawings
The present disclosure is described with reference to the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and in which like reference numerals are used to refer to like parts. Wherein:
FIG. 1 is a perspective view of a cleanable dual-barreled inverted inclined drain structure according to the present invention;
FIG. 2 is a schematic perspective view of a dual-tube inverted inclined drain pipe structure according to the present invention;
the figures are labeled as follows: 1-drilling, 2-water filtering outer pipe, 3-water draining inner pipe, 4-filterable geotechnical material, 5-water permeable hole, 6-transition pipe, 7-anchoring rib, 8-anchoring end, 9-surface layer drainage ditch, 10-slope, 301-induction rod core and 302-buffer material.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
The double-barrelled oblique drain pipe that faces upward that can clear up that this embodiment provided includes that side slope 10 at 9 sides in top layer escape canal sets up drilling 1 set up drainage outer tube 2 in drilling 1, set up drainage inner tube 3 in the drainage outer tube 2, 2 outside parcel geotechnological drainage material 4 of drainage outer tube, 3 outer ends in drainage inner tube set up transition pipe 6, 6 outer end both sides of transition pipe set up and are connected with anchor end 8, anchor end 8 installs in side slope 10, in side slope 10 set up a plurality of with anchor end 8 positions correspond and the anchor muscle 7 of connection.
Specifically, the concrete integral detachable structure of the drainage inner pipe 3 comprises a transition pipe 6 connected to the outer end, and an induction rod core 301 which is embedded in the transition pipe 6 and is installed in the drainage inner pipe, wherein the induction rod core 301 is a waterproof and sealed intelligent induction device, and the induction rod core 301 comprises a control plate, a signal transmission module, a dry battery module, a positioning sensor, a vibration sensor and a pressure sensor; the drainage inner pipe 3 is of a double-wall structure, a buffer material 302 is filled between the double walls, the buffer material 302 is wrapped on the periphery of the outer wall, rubber resin is selected for the buffer material 302, so that buffer pressure and corner abrasion caused by movement of equipment are achieved, the buffer material can buffer pressure, meanwhile, the buffer material can prevent the drainage inner pipe from being damaged by extrusion caused by icing and expansion of the residual water of the drainage inner pipe in a low-temperature environment below zero, and a plurality of water permeable holes are correspondingly formed in the corresponding positions of the double walls of the drainage inner pipe and the buffer material.
The intelligent sensing equipment of the sensing rod core 301 aims at warning the early warning signal of the landslide phenomenon of the side slope caused by severe environment, particularly excessive water seepage in rainy season, the side slope debris flow phenomenon can be timely sensed through the oscillation sensor and the pressure sensor, the intelligent sensing equipment of the sensing rod core timely sends a signal alarm, and a worker timely judges the position of the debris flow according to the received early warning signal; meanwhile, under the normal state, the sensing alarm for the damage of the drainage inner pipe due to extrusion can be prevented.
And arranging the excavated drill holes on the side slope, wherein the elevation angle of the drill holes is set to be 5-15 degrees, and the elevation angle of the drill holes is not particularly limited and is particularly arranged according to the inclination of the side slope on site.
Preferably, a plurality of water permeable holes 5 are formed in the water filtering outer pipe 2 and the water drainage inner pipe 3, and the water filtering outer pipe 2 and the water drainage inner pipe 3 are both PVC pipes with upper half parts and closed lower half parts.
Preferably, the drainage inner pipe 3 is embedded in the water filtering outer pipe 2 and can move, and the outer diameter of the drainage inner pipe 3 is smaller than the inner diameter of the water filtering outer pipe 2; the mode that the water filtering outer pipe 2 is embedded into the drainage inner pipe 3 is adopted, the water filtering outer pipe 2 mainly isolates soil outside the pipe and discharges water in the soil into the drainage inner pipe 3 in a classified mode, and as the water filtering outer pipe is of an upper-opening and lower-sealing structure, a small amount of seepage water which is not discharged into the drainage inner pipe can be dredged through the water filtering outer pipe; the drainage inner pipe 3 is used as a collecting pipe for water seepage, can effectively dredge the collected water seepage, can be taken out and cleaned in the working period due to the movable characteristic of the structure, avoids the blockage of a drainage pipe, reduces the risk of recharging the drainage pipe, and improves the stable reliability of the side slope.
The drainage inner pipe 3 is connected with the transition pipe 6 in a threaded connection mode, and the transition pipe 6 is connected with an anchoring end 8 in a mechanical buckling mode; the anchoring end 8 is arranged on the side slope 10 of the water outlet, when the drainage inner pipe is drawn out, stress concentration is easy to generate at an action point, and the drainage inner pipe is easy to damage by adopting conventional materials.
A construction method capable of cleaning a double-pipe inverted inclined drainage pipe structure comprises the following steps:
step S1, leveling the field, and entering the field by a drilling machine;
step S2, field measurement lofting is carried out, and the drilling point and the incident angle of the drainage pipe slope surface are determined;
step S3, installing the drilling machine, and calibrating the azimuth angle and the elevation angle of the drilling machine;
step S4, drilling, cleaning holes, wrapping the outer pipe with geotechnical water filtering material and installing the water filtering outer pipe;
step S5, installing an anchoring end;
step S6, installing a drainage inner pipe and a transition pipe;
step S7, fixing the transition pipe;
and step S8, cleaning the site.
This example specifically illustrates that, when designing a drainage facility for a side slope, a borehole 1 is drilled first, the borehole having a diameter of about 75 to 150mm and a length extending into an underground water-rich area or below a potential sliding surface; installing a water-filtering outer pipe 2 in the drill hole 1, wherein the outer side of a pipeline of the water-filtering outer pipe 2 is wrapped with a geotechnical water-filtering material 4 which is firm enough and easy to install to a designed length, and can support the drill hole not to deform or collapse; an anchoring end 8 is arranged at the water outlet, the length of an anchoring rib 7 is designed according to the length of the water drainage pipe, a water drainage inner pipe 3 is arranged in the water filtration outer pipe 2, and the size of the water drainage inner pipe 3 is required to meet the requirement of bearing the maximum water flow without interfering the adjacent soil body or generating overlarge water flow pressure; ensuring that the inner tube 3 can move freely within the outer tube 2.
In the embodiment, by designing a method for combining the water filtering outer pipe 2 with the water drainage inner pipe 3, firstly, the water filtering outer pipe 2 is arranged in the drill hole 1 of the side slope 10, the water filtering outer pipe has the functions of protecting the hole wall, performing water-soil separation on water in soil and having a partial water drainage dredging function, and the water drainage inner pipe 3 mainly collects the infiltration water analyzed by the water filtering outer pipe 2 and discharges the infiltration water in time; due to the movable structure, the slope can be taken out and cleaned in the working period, so that the blockage of a drain pipe is avoided, the risk of recharging the inner drain pipe 3 is reduced, and the stable reliability of the slope 10 is improved; an anchoring end 8 is arranged on a side slope 10 at the water outlet, and the transition pipe 6 is connected with the drainage inner pipe 3 in a threaded mode and is connected with the anchoring end 8 in a mechanical buckling mode; when the inner drainage pipe 3 is drawn out, stress concentration is easily generated at an action point, and the conventional material is easy to damage, so that the steel transition pipe is adopted as the transition pipe and the stress working area in the embodiment, and the service life of the drainage pipe is prolonged to a great extent.
In the embodiment, drilling equipment is selected according to the type, the aperture, the hole depth, the construction site condition and the like of the stratum; a drilling machine is prepared to be installed according to hole positions, drilling is carried out by using a follow pipe in the drilling process, hole collapse is prevented, and after the drilling depth reaches the designed depth, all the crushed slag and the water body are removed out of the hole; after the hole is formed, immediately installing the water filtering outer pipe wrapped with the geotechnical water filtering material into the drilled hole, installing an anchoring end at the water drainage port, designing the length of an anchoring rib according to the length of a water drainage pipe, installing a water drainage inner pipe in the water filtering outer pipe, connecting a transition pipe in a threaded connection mode, and fixing the transition pipe at the anchoring end in a mechanical buckling mode; therefore, the purpose of draining water on the side slope is achieved, the invention can effectively drain rainwater infiltrated into the side slope of the target engineering, improve the working efficiency and durability of the drainage pipe, effectively prevent the recharge of the infiltrated water and greatly improve the stability and reliability of the side slope.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The cleanable double-pipe inclined drain pipe is characterized by comprising a hole drilled in a side slope on the side of a surface drainage ditch, an outer water filtering pipe arranged in the hole drilled, an inner water drainage pipe arranged in the outer water filtering pipe, a geotechnical water filtering material wrapped outside the outer water filtering pipe, a transition pipe arranged at the outer end of the inner water drainage pipe, anchoring ends connected to two sides of the outer end of the transition pipe, and a plurality of anchoring ribs corresponding to and connected with the anchoring ends in position;
the specific integral detachable structure of the drainage inner pipe comprises a transition pipe connected to the outer end, and an induction rod core which is embedded in the transition pipe in a penetrating manner and is installed in the drainage inner pipe, wherein the induction rod core is waterproof and sealed intelligent induction equipment, and a control plate, a signal transmission module, a dry battery module, a positioning sensor, a vibration sensor and a pressure sensor are arranged in the induction rod core;
the drainage inner pipe is of a double-wall structure, buffering materials are filled between the double walls, the buffering materials are wrapped on the periphery of the outer wall, and a plurality of water permeable holes are correspondingly formed in the corresponding positions of the double walls of the drainage inner pipe and the buffering materials.
2. The cleanable dual-barreled tilt-up drain of claim 1, wherein: and arranging excavated drill holes on the side slope, wherein the elevation angles of the drill holes are set to be 5-15 degrees.
3. The cleanable dual-barreled tilt-up drain of claim 1, wherein: the water filtering outer pipe and the water discharging inner pipe are both provided with a plurality of water permeable holes, and the water filtering outer pipe and the water discharging inner pipe are both PVC pipes with upper half holes and lower half parts closed.
4. The cleanable dual-barreled tilt-up drain of claim 1, wherein: the drainage inner pipe is embedded in the water filtering outer pipe and can move, and the outer diameter of the drainage inner pipe is smaller than the inner diameter of the water filtering outer pipe.
5. The cleanable dual-barreled tilt-up drain of claim 1, wherein: the drainage inner pipe is connected with the transition pipe in a threaded connection mode, and the transition pipe is connected with the anchoring end in a mechanical buckling mode.
6. The cleanable dual-barreled tilt-up drain of claim 1, wherein: the transition pipe is made of steel and is a thin-wall steel pipe.
7. The cleanable dual-barreled tilt-up drain pipe according to claims 1 to 6, wherein: a construction method capable of cleaning a double-pipe inverted inclined drainage pipe structure comprises the following steps:
step S1, leveling the field, and entering the field by a drilling machine;
step S2, field measurement lofting is carried out, and the drilling point and the incident angle of the drainage pipe slope surface are determined;
step S3, installing the drilling machine, and calibrating the azimuth angle and the elevation angle of the drilling machine;
step S4, drilling, cleaning holes, wrapping the outer pipe with geotechnical water filtering material and installing the water filtering outer pipe;
step S5, installing an anchoring end;
step S6, installing a drainage inner pipe and a transition pipe;
step S7, fixing the transition pipe;
and step S8, cleaning the site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409389.1A CN114086584A (en) | 2021-11-25 | 2021-11-25 | Cleanable double-pipe inclined drainage pipe structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111409389.1A CN114086584A (en) | 2021-11-25 | 2021-11-25 | Cleanable double-pipe inclined drainage pipe structure and construction method thereof |
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| CN114086584A true CN114086584A (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111409389.1A Pending CN114086584A (en) | 2021-11-25 | 2021-11-25 | Cleanable double-pipe inclined drainage pipe structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492083A (en) * | 2022-09-20 | 2022-12-20 | 中煤科工集团沈阳设计研究院有限公司 | Drainage device for treating water seepage of soil slope of strip mine and application method of drainage device |
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| CN210657862U (en) * | 2019-09-05 | 2020-06-02 | 中建中新建设工程有限公司 | Novel underdrain drain assembly |
| CN212956518U (en) * | 2020-07-03 | 2021-04-13 | 中交四航工程研究院有限公司 | Formula of heeling side slope drainage stock |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2380369Y (en) * | 1999-07-13 | 2000-05-31 | 聂再安 | Steel-fiber cement filtering water-drainage pipe |
| CN101117804A (en) * | 2007-08-28 | 2008-02-06 | 中国科学院武汉岩土力学研究所 | Semi-permeable discharge pipe and its discharging net |
| CN202117041U (en) * | 2011-06-08 | 2012-01-18 | 缪正祥 | Inner stress monitoring device for walls of deep foundation pits |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115492083A (en) * | 2022-09-20 | 2022-12-20 | 中煤科工集团沈阳设计研究院有限公司 | Drainage device for treating water seepage of soil slope of strip mine and application method of drainage device |
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Application publication date: 20220225 |