CN108843386A - Tunnel roof waterproof drainage structure and water seepage treatment method thereof - Google Patents
Tunnel roof waterproof drainage structure and water seepage treatment method thereof Download PDFInfo
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- CN108843386A CN108843386A CN201810742153.1A CN201810742153A CN108843386A CN 108843386 A CN108843386 A CN 108843386A CN 201810742153 A CN201810742153 A CN 201810742153A CN 108843386 A CN108843386 A CN 108843386A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 25
- 239000004567 concrete Substances 0.000 claims abstract description 41
- 230000005641 tunneling Effects 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 230000008595 infiltration Effects 0.000 description 15
- 238000001764 infiltration Methods 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000010276 construction Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000037452 priming Effects 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Aiming at the underground excavated tunnel with abundant underground water, the drainage device with the water passing channel is pre-arranged between the primary concrete layer and the waterproof layer, so that the disposal mode of drainage firstly and seepage prevention is realized in the tunnel region, the full-section drainage efficiency is improved, and the pressure formed by water seepage overstock on the top plate is reduced. The waterproof drainage structure is integrally arranged between the primary concrete layer and the secondary lining pouring layer and comprises a skeleton of which the top end is attached to the primary concrete layer, and a plurality of skeletons are arranged on the pipe surface in parallel, so that a plurality of water channels are formed between the primary concrete layer and the pipe surface and between two adjacent skeletons; the vertical bottom of tube face is connected with the drainage tube, and the drainage tube communicates to the ditch of tunnel bottom.
Description
Technical field
The present invention proposes a kind of waterproof flow guiding structure for bored tunnel top plate seepage problem, and applies such waterproof
The water seepage treatment method that flow guiding structure is realized, belongs to constructing tunnel and technical field is discharged in waterproof.
Background technique
Tunnel is the engineering works being embedded in stratum, is a kind of form of human use's underground space.Today's society,
In the city that traffic above-ground pressure increases increasingly, the development of underground space engineering technology so that the mankind Underground Rail Transit day
Attain perfect.Since the most buried depth of city underground engineering is shallower, and excavates location and is often accompanied by complicated surface state and geological conditions,
Especially in surface water body and rich water geologic structure, the water-impervious of tunnel roof is just particularly important.
Traditional tunnel water-impervious mainly wraps up one layer of waterproof material between first branch concrete layer and two linings, when encountering
The case where ground sweat is serious and water rich strata a large amount of water bursts, original waterproof material just shows slightly thin, this has resulted in tunnel
The difficult situation of water-impervious " impossible to guard against ".
Following scheme earlier application patent, application number CN201710011632.1, a kind of bored tunnel bottom of title are such as disclosed
Catch pit is arranged including the first branch concrete layer lower part in tunnel, for drawing the infiltration of first branch bottom in plate drainage processing method
It flow to catch pit;It is laid with one on first branch concrete surface and is located at catch pit top and the baffle with through-hole;Setting is consistent
The steel pipe for stating through-hole is put on, steel pipe one end probes into catch pit, and the other end connects a self priming pump and draws water;Bored tunnel has been constructed
Cheng Hou removes self priming pump, to steel pipe slip casting, closes the hole of steel pipe, and catch pit being capable of infiltration to first branch bottom, underground ponding
Collected, negative pressure is generated in the port of steel pipe for probeing into catch pit by self priming pump, infiltration, underground ponding are flowed out by steel pipe to be collected
Puddle.The program carries out waterproof drainage for the bottom plate of bored tunnel, carries out charge for remittance by devices such as setting bottom plate catch pits and draws
Out.
For another example application number CN201710518076.7, heavy caliber dewatering well construction method in title metro built by mining method hole,
By first excavating the precipitation pilot tunnel for being parallel to bored tunnel, and in-cavity construction heavy caliber dewatering well is being led, is then utilizing row
The ponding in dewatering well is ultimately discharged into rain pipe by header tank, ground catch pit in water lines, hole, realizes face without infiltration
Tunnel excavation construction.The program is formulated drilling machine handling scheme to be reduced to main construction, using vertical shaft, channel space, is finally carried out
It precipitation well construction and draws water in hole.The program is directed to entire bored tunnel, is constructed one on bored tunnel face by elder generation
Then Dewatering pilot tunnel in parallel is leading in-cavity construction heavy caliber dewatering well, and is utilizing header tank in discharge pipe line, hole
Equal facilities, which collect water body in tunnel to municipal rain pipe, to be drained.
Above-mentioned 2 earlier application patents, are arranged again although first collecting in constructing tunnel process in the infiltration that first branch bottom is formed
Out, but the defect of technology and permanence operation is used to be also apparent from.First is that the inbuilt steel pipe of institute and pilot tunnel cannot be directed to
And solve the problems, such as tunnel roof water drenching, above-mentioned construction discharge technology for close under water body seep or tunnel is in water rich strata and
Under conditions of persistently there are a large amount of water bursts, just have no way of playing a role.Second is that above-mentioned drainage arrangement and be not belonging to tunnel itself knot
Structure easily occurs gap during each level pouring construction, is laid with untight problem, integrally-built steady hence for tunnel
It is qualitative to bring many unfavorable factors with whole antiseepage water process.
In view of this, special propose present patent application.
Summary of the invention
Tunnel roof waterproof flow guiding structure and its water seepage treatment method of the present invention, it is above-mentioned existing its object is to solve
Technology there are the problem of and be directed to rich groundwater bored tunnel top plate water drenching serious situation, by that will have water passage
Drainage device default in just between branch concrete layer and waterproof layer, to realize the disposition for first draining antiseepage again in transit tunnel
Mode improves tunneling boring drainage efficiency, reduces the overstocked pressure formed for top plate of infiltration.
For achieving the above object, the tunnel roof waterproof flow guiding structure is integrally arranged in first branch concrete layer
Between two lining pouring layer, primary structure includes:
Top fits in the skeleton of first branch concrete layer, several skeletons are concurrently installed on pipe face, therefore just branch coagulation
Several sluices are formed between soil layer and pipe face, two neighboring skeleton;
The vertical bottom in pipe face is connected with drainage tube, and drainage tube is connected to the ditch of tunnel bottom.
It is complete in first branch spray concrete process for the serious tunnel of top plate infiltration such as the basic scheme of above-mentioned waterproof flow guiding structure
At and after after concrete layer solidification, arch position of the pipe face of skeleton by lock ring more than tunnel floor is installed, is drawn by waterproof
Flow structure forms the sluice of multiple parallel arrangeds at first branch concrete layer, carries out for the serious transit tunnel of top plate infiltration
First drain antiseepage again, with this can solve the problems, such as merely by tunnel waterproofing layer can not thorough antiseepage top plate water drenching.
To further improve anti-seepage effect, it is anti-can to be equipped with to tunneling boring two linings between pipe face and two lining pouring layer
Water layer.It can take traditional handicraft that the waterproof material for wrapping up full section of tunnel is tightly attached on pipe face, it is subsequent again using two linings etc.
Process completes tunnel one-piece casting.
To improve the stability of waterproof flow guiding structure on the whole, reducing difficulty of construction, the pipe face includes two-by-two
The several segments of splicing, adjacent two sections are closely connect by right angle end with flat end, to guarantee impermeable sealing effect.
The section of the skeleton is T font structure, and bottom can be anchored on pipe face by screw.
Based on the mentality of designing of the above waterproof flow guiding structure, the application realizes a kind of tunnel roof water seepage treatment side simultaneously
A waterproof flow guiding structure is arranged between the first branch concrete layer of bored tunnel and two lining pouring layer in method;
Skeleton top is fitted in into just branch concrete layer, the shape between two neighboring skeleton, pipe face and first branch concrete layer
At sluice;
The water of bored tunnel top plate exudation, the vertical bottom in pipe face is drained to by multiple sluices of parallel arranged, then lead to
Drainage tube concentration is crossed to be expelled in the ditch of tunnel bottom.
Between pipe face and two lining pouring layer, it is equipped with to tunneling boring two lining waterproof layers.
The tunnel roof water seepage treatment method, including following implementation steps:
Drainage, first branch spray concrete process complete, etc. just branch concrete layer solidification after, the pipe of several skeletons will be installed
Face lock ring is formed multiple in the arch position of vertical (0.2-0.5) m or more of tunnel floor between first branch concrete layer and pipe face
The sluice of parallel arranged;
Antiseepage is laid with two lining waterproof layers in pipe face bottom surface;
Two linings pour two lining pouring layer in two lining waterproof layer bottom surfaces;
Draining, in the vertical bottom in tunnel at interval of the position of (3-6) m, pre-buried drainage tube obliquely;The top of drainage tube connects
The water that top plate oozes out is expelled to ditch by the discharge outlet in siphunculus face, bottom end.
Further, pipe face can be divided into the several segments spliced two-by-two, adjacent two sections are carried out by right angle end and flat end
Close connection.
Also T font structure can be set by the skeleton section, bottom is installed on pipe face by screw.
To sum up content, the tunnel roof waterproof flow guiding structure and its water seepage treatment method have the advantage that:
1, water passage is defaulted in just between branch concrete layer and waterproof layer, can realizes and first draws between the whole district on the whole
The processing mode of antiseepage again is flowed, the drainage efficiency of full section of tunnel is higher.
2, drainage and drainage can be played, richness can be fundamentally solved with after the completion of the duration during constructing tunnel
The pressure formed for top plate is overstock in a large amount of infiltrations of water area, guarantees that tunnel is integrally-built firm.
3, play the role of good consolidation to water-impervious on the basis of original waterproof layer, extend two lining waterproof layers
Service life.
4, top plate, which largely seeps water, flow among the ditch of tunnel floor two sides by drainage tube, and this " even anti-band draws " prevents
Infiltration structure can avoid the water drenching problem of tunnel roof to the maximum extent.
5, construction way is relatively less, and operation is relatively simple, therefore construction cost is lower.
Detailed description of the invention
Fig. 1 is the sectional view of concealed tunneling structure;
Fig. 2 is each layered structure sectional front view of top plate of bored tunnel;
Fig. 3 is each left view sectional view layered of Fig. 2 top plate;
Fig. 4 is the splicing schematic diagram of waterproof flow guiding structure;
Fig. 5 is the connector stitching portion schematic diagram of waterproof flow guiding structure;
As shown in Figures 1 to 5, first branch concrete layer 1, waterproof flow guiding structure 2, two serve as a contrast waterproof layer 3, two and serve as a contrast pouring layer 4, tunnel
Road bottom plate 5, ditch 6, drainage tube 7, skeleton 21, pipe face 22, stitching portion 23, sluice 24, pipe face right angle end 25, pipe face flat end
26。
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment 1, as shown in Fig. 1 to 5, it is mixed to be set to just branch for the waterproof flow guiding structure 2 for bored tunnel top plate
Between solidifying soil layer 1 and two lining pouring layer 4.Specifically,
Waterproof flow guiding structure 2 includes the pipe face 22 of drainage tube 7, steel skeleton 21 and arc PVC material;
Each pvc pipe face 22, the length is arch actual sizes more than 5 position vertical top 0.3m of tunnel floor;
On pipe face 22,1 arc steel skeleton 21, the reality of skeleton 21 are installed at interval of 20cm from center baseline to two sides
Border length and pvc pipe face 22 are wide.
The section of skeleton 21 is T font structure, and top fits in just branch concrete layer 1;The horizontal component two of skeleton 21
Side is equipped with screw hole at interval of 0.5m respectively, and skeleton 21 is fixed on pipe face 22 by screw;
Sluice 24 is formed between first branch concrete layer 1 and pipe face 22, two neighboring skeleton 21;
The pvc pipe face 22 of steel skeleton 21 will be installed, is spliced every a distance as a unit, and extend
To between the first branch concrete layer 1 of entire transit tunnel and two lining waterproof layers 3, the paving of the waterproof flow guiding structure 2 is completed with this
If.
In the joint 23 of two neighboring 22 rear and front end of pvc pipe face, one end is the flat end with pvc pipe face uniform thickness
26, the other end is the right angle end 25 that can all cover flat end just, and both ends are equipped with screw hole, so as to flat end 26 and directly
Angle end 25 is combined closely, to play the watertight effect in joint 23.
It is connected with drainage tube 7 in the vertical bottom in pipe face 22, drainage tube 7 is connected to the ditch 6 of tunnel bottom.
Using the tunnel roof water seepage treatment method of above-mentioned waterproof flow guiding structure, the serious tunnel of top plate infiltration can be applied to
In, i.e., a waterproof flow guiding structure is set between the first branch concrete layer 1 of bored tunnel and two lining pouring layer 4.Branch sprayed concrete originally
Process is completed and after concrete layer solidification, next again by the described hoop of waterproof drainage device 2 apart from tunnel floor 5 with
Arch position at upper 0.3m.Specifically,
In process of deployment, need to fit on 21 top of steel skeleton just branch concrete layer 1, the section of steel skeleton 21
For T font structure, bottom is installed on pipe face 22 by screw;In two neighboring skeleton 21, pipe face 22 and first branch concrete layer 1
Between form the sluice 24 of parallel arranged one by one, so that the top plate serious transit tunnel that seeps water first is drained antiseepage again;
The water of bored tunnel top plate exudation, the vertical bottom in pipe face 22 is drained to by multiple sluices 24 of parallel arranged,
It is expelled in the ditch 6 of tunnel bottom by the concentration of drainage tube 7 again.
The tunnel roof water seepage treatment method, including following implementation steps,
Drainage, complete in first branch spray concrete process, etc. after just branch concrete layer 1 solidifies, several skeletons 21 will be installed
22 lock ring of pipe face arch position 0.3m or more vertical in tunnel floor 5, formed between first branch concrete layer 1 and pipe face 22
The sluice 24 of multiple parallel arrangeds;Each piece of waterproof drainage device 2 is successively carried out to front and back splicing and extends to entire tunnel
The first branch concrete layer 1 in section;
Antiseepage is equipped with to tunneling boring two lining waterproof layers 3 between pipe face 22 and two lining pouring layer 4;
Two linings pour two lining pouring layer 4 in two lining 3 bottom surfaces of waterproof layer;
Draining, in the vertical bottom in tunnel at interval of the position of 5m, pre-buried drainage tube 7 obliquely;The top of drainage tube 7 is connected to
The water that top plate oozes out is expelled to ditch 6 by the discharge outlet in pipe face 22, bottom end, connects the top drawn and flowed out from sluice 24 with this
Plate infiltration.
In this application, this waterproof flow guiding structure 2 can on the basis of antiseepage, water yield that top plate is had more than needed along
Pvc pipe face 22 drains and goes out, and has both alleviated a large amount of infiltration hydraulic pressure caused by top plate, and it is anti-to also avoid two lining of water seepage of tunnel breakthrough
Water layer 3 and caused by top plate water drenching situation.When being seeped under surface water body or when water rich strata a large amount of water bursts, infiltration is by just propping up
Concrete layer 1 ooze out after, can steel skeleton 21 formed sluice 24 in of short duration storage, reduce infiltration overstock to tunnel
Direct pressure caused by top plate.
Pvc pipe face 22 can play the role of good consolidation to water-impervious on the basis of two lining waterproof layer 3, extend
The service life of two lining waterproof layers 3.Meanwhile top plate largely seeps water can be drained to 5 two sides of tunnel floor along pvc pipe face 22
Among ditch 6, the seepage-proof structure of this " even anti-band draws " can avoid the water drenching problem of tunnel roof to the maximum extent.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of tunnel roof waterproof flow guiding structure, it is characterised in that:It is set to just branch concrete layer (1) and two lining pouring layer
(4) between;
Flow guiding structure includes that top fits in the skeleton (21) of just branch concrete layer (1), several skeletons (21) are concurrently pacified
Loaded on pipe face (22);
Sluice (24) are formed between first branch concrete layer (1) and pipe face (22), two neighboring skeleton (21);
The vertical bottom in pipe face (22) is connected with drainage tube (7), and drainage tube (7) is connected to the ditch (6) of tunnel bottom.
2. tunnel roof waterproof flow guiding structure according to claim 1, it is characterised in that:It is poured in pipe face (22) and two linings
Between layer (4), it is equipped with to tunneling boring two lining waterproof layers (3).
3. tunnel roof waterproof flow guiding structure according to claim 1 or 2, it is characterised in that:Pipe face (22) packet
The several segments spliced two-by-two are included, adjacent two sections are closely connect by right angle end (25) with flat end (26).
4. tunnel roof waterproof flow guiding structure according to claim 3, it is characterised in that:The skeleton (21), is cutd open
Face is T font structure.
5. a kind of tunnel roof water seepage treatment method of application tunnel roof waterproof flow guiding structure as described in Claims 1-4,
It is characterized in that:A waterproof flow guiding structure is set between the first branch concrete layer (1) of bored tunnel and two linings pouring layer (4);
Skeleton (21) top is fitted in into just branch concrete layer (1), in two neighboring skeleton (21), pipe face (22) and first branch coagulation
Sluice (24) are formed between soil layer (1);
The water of bored tunnel top plate exudation, the vertical bottom in pipe face (22) is drained to by multiple sluices (24) of parallel arranged,
It is concentrated and is expelled in the ditch (6) of tunnel bottom by drainage tube (7) again.
6. tunnel roof water seepage treatment method according to claim 5, it is characterised in that:It is poured in pipe face (22) and two linings
Between layer (4), it is equipped with to tunneling boring two lining waterproof layers (3).
7. tunnel roof water seepage treatment method according to claim 5 or 6, it is characterised in that:Including following implementation steps,
Drainage, first branch spray concrete process complete, etc. just branch concrete layer (1) solidification after, several skeletons (21) will be installed
Pipe face (22) lock ring in the arch position of vertical (0.2-0.5) m or more of tunnel floor (5), in first branch concrete layer (1) and pipe
The sluice (24) of multiple parallel arrangeds is formed between face (22);
Antiseepage is laid with two linings waterproof layer (3) in pipe face (22) bottom surface;
Two linings pour two lining pouring layer (4) in two lining waterproof layer (3) bottom surfaces;
Draining, in the vertical bottom in tunnel at interval of the position of (3-6) m, pre-buried drainage tube (7) obliquely;The top of drainage tube (7)
The water that top plate oozes out is expelled to ditch (6) by the discharge outlet in communicating pipe face (22), bottom end.
8. tunnel roof water seepage treatment method according to claim 7, it is characterised in that:Pipe face (22) are divided into and are spelled two-by-two
The several segments connect, adjacent two sections are closely connect by right angle end (25) with flat end (26).
9. tunnel roof water seepage treatment method according to claim 8, it is characterised in that:The skeleton (21), is cutd open
Face is T font structure, and bottom is installed on pipe face (22) by screw.
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CN201810742153.1A CN108843386A (en) | 2018-07-09 | 2018-07-09 | Tunnel roof waterproof drainage structure and water seepage treatment method thereof |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109611149A (en) * | 2018-12-11 | 2019-04-12 | 成都大学 | A kind of Tunnel Passing tomography containing water burst flow guiding structure and construction method |
CN110374644A (en) * | 2019-08-28 | 2019-10-25 | 东北大学 | A kind of the drainage waterproof construction and its construction method of full section of tunnel |
CN110630270A (en) * | 2019-10-25 | 2019-12-31 | 中建八局轨道交通建设有限公司 | Drainage system for treating stagnant water between underground excavation shaft layers and construction method thereof |
CN111608727A (en) * | 2020-06-08 | 2020-09-01 | 哈尔滨工业大学 | Cold region mountain tunnel composite drainage system and construction method thereof |
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US20060165489A1 (en) * | 2002-11-22 | 2006-07-27 | Dong-Hyun Seo | Structure of intermediate wall of three arch excavated tunnel and method for constructing the same |
CN104806272A (en) * | 2015-04-15 | 2015-07-29 | 西安科技大学 | Tunnel diversion composite type waterproof and drainage system as well as construction method and use method thereof |
CN208619166U (en) * | 2018-07-09 | 2019-03-19 | 青岛理工大学 | Waterproof drainage structure of tunnel roof |
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2018
- 2018-07-09 CN CN201810742153.1A patent/CN108843386A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20060165489A1 (en) * | 2002-11-22 | 2006-07-27 | Dong-Hyun Seo | Structure of intermediate wall of three arch excavated tunnel and method for constructing the same |
CN104806272A (en) * | 2015-04-15 | 2015-07-29 | 西安科技大学 | Tunnel diversion composite type waterproof and drainage system as well as construction method and use method thereof |
CN208619166U (en) * | 2018-07-09 | 2019-03-19 | 青岛理工大学 | Waterproof drainage structure of tunnel roof |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109611149A (en) * | 2018-12-11 | 2019-04-12 | 成都大学 | A kind of Tunnel Passing tomography containing water burst flow guiding structure and construction method |
CN110374644A (en) * | 2019-08-28 | 2019-10-25 | 东北大学 | A kind of the drainage waterproof construction and its construction method of full section of tunnel |
CN110630270A (en) * | 2019-10-25 | 2019-12-31 | 中建八局轨道交通建设有限公司 | Drainage system for treating stagnant water between underground excavation shaft layers and construction method thereof |
CN110630270B (en) * | 2019-10-25 | 2024-05-10 | 中建八局轨道交通建设有限公司 | Drainage system for treating inter-layer water stagnation of underground excavation vertical shaft and construction method thereof |
CN111608727A (en) * | 2020-06-08 | 2020-09-01 | 哈尔滨工业大学 | Cold region mountain tunnel composite drainage system and construction method thereof |
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