CN108194135A - A kind of constructing metro tunnel prevents top drainage pipeline leaking substance and construction method - Google Patents
A kind of constructing metro tunnel prevents top drainage pipeline leaking substance and construction method Download PDFInfo
- Publication number
- CN108194135A CN108194135A CN201711401076.5A CN201711401076A CN108194135A CN 108194135 A CN108194135 A CN 108194135A CN 201711401076 A CN201711401076 A CN 201711401076A CN 108194135 A CN108194135 A CN 108194135A
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- Prior art keywords
- water pipe
- drainage pipeline
- flexible water
- flexible
- pipeline
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 239000000126 substance Substances 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 158
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims description 24
- 238000007689 inspection Methods 0.000 claims description 16
- 238000011017 operating method Methods 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 10
- 238000005260 corrosion Methods 0.000 claims description 6
- 238000011835 investigation Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 239000004035 construction material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002045 lasting effect Effects 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A kind of constructing metro tunnel prevents top drainage pipeline leaking substance, one Flexible water pipe of arrangement ensures the tightness of drainage pipeline specially inside drainage pipeline, flow is made to be flowed through from Flexible water pipe, water is avoided to cause seepage flow from the crack of pipeline or the leakage of connector breakage, the liner steel ring that two outer diameters are less than Flexible water pipe internal diameter is embedded in Flexible water pipe both ends.Construction method：Flexible water pipe as drainage pipeline liner, apply in the construction that the existing drainage pipeline leakage in top is prevented in constructing tunnel field by the method for increasing the tightness of drainage pipeline；The both ends of Flexible water pipe are embedded in as liner steel ring using two steel cylinders, it is ensured that Flexible water pipe intake-outlet is in open configuration, convenient for water delivery；Advantages of the present invention：The present invention can ensure the tightness of drainage pipeline with extremely economic cheap cost, prevent to occur to leak during the constructing tunnel that underlies in drainage pipeline to cause construction safety hidden danger, keep normal water delivery, do not leak.
Description
Technical field
The present invention relates to constructing metro tunnel field, a kind of more particularly to constructing metro tunnel prevents top drainage pipeline
Leaking substance and construction method.
Background technology
Constructing metro tunnel is commonly encountered down the situation for wearing existing drainage pipeline.Existing drainage pipeline long neglected and in disrepair may be deposited
The crack and damaged joint the problems such as, constructing tunnel causes the differential settlement on stratum that may also can destroy the complete of drainage pipeline
Whole property.These drainage pipelines leakage causes seepage flow that can significantly reduce the stability of tunnel surrounding, serious or even can cause vault
Or the accidents such as face landslide, threaten the life security of construction personnel.Therefore it adopts an effective measure during avoiding constructing tunnel
Top drainage pipeline leakage is of great significance.
Invention content
The purpose of the invention is to overcome the above problem, having provided a kind of constructing metro tunnel prevents top drainpipe
Road leaking substance and construction method.
The present invention provides a kind of constructing metro tunnels to prevent top drainage pipeline leaking substance, it is characterised in that：Subway
Constructing tunnel prevents top drainage pipeline leaking substance, and one Flexible water pipe of arrangement ensures drainage pipeline specially inside drainage pipeline
Tightness, flow is made to be flowed through from Flexible water pipe, avoid water from the crack of pipeline or connector breakage leakage cause seepage flow, in tunnel
Road construction field prevents overlying pipe leakage, it is ensured that still for for the first time in the measure of tunnel safety construction.
The liner steel ring that two outer diameters are less than Flexible water pipe internal diameter is embedded in Flexible water pipe both ends；Effect one, liner steel ring struts
Two end interfaces of Flexible water pipe, it is ensured that the inlet and outlet open configuration at Flexible water pipe both ends therefrom flows in and out convenient for water.
Effect two, liner steel ring support Flexible water pipe, under rubber fastening band and expansion water-stop glue booster action, it is ensured that Flexible water pipe and draining
Inner wall of the pipe is more closely bonded, and gap of the flow between Flexible water pipe and drainage pipeline inner wall is avoided to flow through.Liner aperture has
Corrosion protective layer, it is ensured that the rigidity for keeping enough is used for a long time in water.
Using the gap between rubber fastening band and expansion water-stop glue auxiliary seal Flexible water pipe and drainage pipeline.Rubber stops
Water band and expansion water-stop glue meet water volume and expand to reach filling gap, block up the purpose of reality leakage passage.Rubber fastening band
Water volume expansion, under the supporting role of inner lining steel circle, tight padding and compacting drainage pipeline inner wall and defeated are met with expansion water-stop glue
Gap between water band ensures that flow flows through inside Flexible water pipe completely, avoids leaking.
A kind of constructing metro tunnel prevents the construction method of top drainage pipeline leaking substance, it is characterised in that：Flexible water pipe
As drainage pipeline liner, the method for increasing the tightness of drainage pipeline is applied the existing draining in top is prevented in constructing tunnel field
In the construction of pipe leakage；The both ends of Flexible water pipe are embedded in as liner steel ring using two steel cylinders, it is ensured that Flexible water pipe Inlet and outlet water
Mouth is in open configuration, convenient for water delivery；Using rubber fastening band and expansion water-stop glue filling Flexible water pipe and drainage pipeline inner wall it
Between gap, rubber fastening band and expansion water-stop glue, which meet water volume intumescent filler gap, ensures that water may not flow into Flexible water pipe and draining
It is leaked between pipeline and then from the crack of drainage pipeline or connector breakage；
The internal diameter of investigation drainage pipeline is needed before construction, the length of pipeline between adjacent two inspection shaft.It is had made to order according to investigation
Flexible water pipe, Flexible water pipe have certain flexibility and draftability.Liner steel ring select outer diameter be less than Flexible water pipe internal diameter steel cylinder be
Preferably, the height of steel cylinder is about.Steel cylinder barrel need to be by certain thickness, and being subject to has enough rigidity support Flexible water pipes.Liner
Steel ring has certain corrosion protective layer.
Constructing operation place is around two inspection shafts：
Step 1：First using particular device by conductor rope through drainage pipeline, an inspection shaft is nearby by conductor rope wherein
Firmly tie up to the end of Flexible water pipe；
Step 2：It draws conductor rope and Flexible water pipe is run through into entire drainage pipeline.If pipe diameter is sufficiently large to meet operation
The disengaging demand of personnel can artificial traction Flexible water pipe.
Step 3：This operating procedure is intended to Flexible water pipe both ends being fixed on the both ends of drainage pipeline, makes water from Flexible water pipe
In flow through, it is impossible to the channel between Flexible water pipe and pipeline flows through, and prevents leak.Inner ring steel ring is embedded in Flexible water pipe
In, liner steel ring props up Flexible water pipe, and Flexible water pipe is made more closely to be bonded with drainage pipeline.
Step 4：This operating procedure is intended to the clearance seal between Flexible water pipe and drainage pipeline wall, it is ensured that inspection shaft
In water will not be between Flexible water pipe and drainage pipeline wall gap flow into.Specific leak-proof measure is to be filled using rubber water-proof with
Gap between Flexible water pipe and drainage pipeline, and it is appropriate be aided with expansion water-stop glue, length and liner steel ring length are filled in longitudinal direction
It is identical.
After more than constructing operation, Flexible water pipe both ends are bonded under inner lining steel circle supporting role with drainage pipeline wall, rubber
Waterstop and expansion water-stop glue ensure drainage pipeline wall and the close gapless of water delivery interband, it is ensured that the water in inspection shaft is completely from defeated
It circulates in water band, will not flow through from the gap of Flexible water pipe and drainage pipeline, be leaked when drainage pipeline destroys.
Advantages of the present invention：
The present invention can ensure the tightness of drainage pipeline with extremely economic cheap cost, prevent in drainage pipeline under
Leakage occurs during volt constructing tunnel to cause construction safety hidden danger or even cause stratum differential settlement in constructing tunnel, arranges
In the case that waterpipe loses destruction, Flexible water pipe bears larger deformation enough, keeps normal water delivery, does not ooze
Leakage.Construction cost is cheap.Since cheap Flexible water pipe, steel cylinder, rubber fastening band and expansion water-stop glue etc. are only used in construction,
And construction technology is simple, operability is strong, be compared to pipeline change move it is required link up to related property right unit, change to move and set
The operation such as meter, construction has significant advantage on time cost and financial cost.Waterproof effect is lasting.Flexible water pipe in construction material
There is preferable durability with the liner steel ring Jing Guo anti-corrosion treatment, permanent performance work(still is able in water immersion
Effect.The permanent tightness for ensuring drainage pipeline still is able to after the completion of constructing tunnel, prevents to leak.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is described in further detail：
Fig. 1 is one schematic diagram of operating procedure；
Fig. 2 is two schematic diagram of operating procedure；
Fig. 3 is three schematic diagram of operating procedure；
Fig. 4 is four schematic diagram of operating procedure；
Fig. 5 is five schematic diagram of operating procedure；
In figure, 1 is Flexible water pipe, and 2 be conductor rope, and 3 be existing flowing line, and 4 be inspection shaft, and 5 be the tunnel that will be constructed, 6
For rubber fastening band.
Specific embodiment
Embodiment 1
The present invention provides a kind of constructing metro tunnels to prevent top drainage pipeline leaking substance, it is characterised in that：Subway
Constructing tunnel prevents top drainage pipeline leaking substance, and one Flexible water pipe of arrangement ensures drainage pipeline specially inside drainage pipeline
Tightness, flow is made to be flowed through from Flexible water pipe, avoid water from the crack of pipeline or connector breakage leakage cause seepage flow, in tunnel
Road construction field prevents overlying pipe leakage, it is ensured that still for for the first time in the measure of tunnel safety construction.
The liner steel ring that two outer diameters are less than Flexible water pipe internal diameter is embedded in Flexible water pipe both ends；Effect one, liner steel ring struts
Two end interfaces of Flexible water pipe, it is ensured that the inlet and outlet open configuration at Flexible water pipe both ends therefrom flows in and out convenient for water.
Effect two, liner steel ring support Flexible water pipe, under rubber fastening band and expansion water-stop glue booster action, it is ensured that Flexible water pipe and draining
Inner wall of the pipe is more closely bonded, and gap of the flow between Flexible water pipe and drainage pipeline inner wall is avoided to flow through.Liner aperture has
Corrosion protective layer, it is ensured that the rigidity for keeping enough is used for a long time in water.
Using the gap between rubber fastening band and expansion water-stop glue auxiliary seal Flexible water pipe and drainage pipeline.Rubber stops
Water band and expansion water-stop glue meet water volume and expand to reach filling gap, block up the purpose of reality leakage passage.Rubber fastening band
Water volume expansion, under the supporting role of inner lining steel circle, tight padding and compacting drainage pipeline inner wall and defeated are met with expansion water-stop glue
Gap between water band ensures that flow flows through inside Flexible water pipe completely, avoids leaking.
A kind of constructing metro tunnel prevents the construction method of top drainage pipeline leaking substance, it is characterised in that：Flexible water pipe
As drainage pipeline liner, the method for increasing the tightness of drainage pipeline is applied the existing draining in top is prevented in constructing tunnel field
In the construction of pipe leakage；The both ends of Flexible water pipe are embedded in as liner steel ring using two steel cylinders, it is ensured that Flexible water pipe Inlet and outlet water
Mouth is in open configuration, convenient for water delivery；Using rubber fastening band and expansion water-stop glue filling Flexible water pipe and drainage pipeline inner wall it
Between gap, rubber fastening band and expansion water-stop glue, which meet water volume intumescent filler gap, ensures that water may not flow into Flexible water pipe and draining
It is leaked between pipeline and then from the crack of drainage pipeline or connector breakage；
The internal diameter of investigation drainage pipeline is needed before construction, the length of pipeline between adjacent two inspection shaft.It is had made to order according to investigation
Flexible water pipe, Flexible water pipe have certain flexibility and draftability.Liner steel ring select outer diameter be less than Flexible water pipe internal diameter steel cylinder be
Preferably, the height of steel cylinder is about.Steel cylinder barrel need to be by certain thickness, and being subject to has enough rigidity support Flexible water pipes.Liner
Steel ring has certain corrosion protective layer.
Constructing operation place is around two inspection shafts：
Step 1：First using particular device by conductor rope through drainage pipeline, an inspection shaft is nearby by conductor rope wherein
Firmly tie up to the end of Flexible water pipe；
Step 2：It draws conductor rope and Flexible water pipe is run through into entire drainage pipeline.If pipe diameter is sufficiently large to meet operation
The disengaging demand of personnel can artificial traction Flexible water pipe.
Step 3：This operating procedure is intended to Flexible water pipe both ends being fixed on the both ends of drainage pipeline, makes water from Flexible water pipe
In flow through, it is impossible to the channel between Flexible water pipe and pipeline flows through, and prevents leak.Inner ring steel ring is embedded in Flexible water pipe
In, liner steel ring props up Flexible water pipe, and Flexible water pipe is made more closely to be bonded with drainage pipeline.
Step 4：This operating procedure is intended to the clearance seal between Flexible water pipe and drainage pipeline wall, it is ensured that inspection shaft
In water will not be between Flexible water pipe and drainage pipeline wall gap flow into.Specific leak-proof measure is to be filled using rubber water-proof with
Gap between Flexible water pipe and drainage pipeline, and it is appropriate be aided with expansion water-stop glue, length and liner steel ring length are filled in longitudinal direction
It is identical.
After more than constructing operation, Flexible water pipe both ends are bonded under inner lining steel circle supporting role with drainage pipeline wall, rubber
Waterstop and expansion water-stop glue ensure drainage pipeline wall and the close gapless of water delivery interband, it is ensured that the water in inspection shaft is completely from defeated
It circulates in water band, will not flow through from the gap of Flexible water pipe and drainage pipeline, be leaked when drainage pipeline destroys.
Claims (3)
1. a kind of constructing metro tunnel prevents top drainage pipeline leaking substance, it is characterised in that：Constructing metro tunnel prevents
One Flexible water pipe of arrangement ensures the tightness of drainage pipeline inside square drainage pipeline leaking substance, specially drainage pipeline, makes water
Stream is flowed through from Flexible water pipe, and water is avoided to cause seepage flow from the crack of pipeline or the leakage of connector breakage, and two outer diameters are less than water delivery
Liner steel ring with internal diameter is embedded in Flexible water pipe both ends；Using rubber fastening band and expansion water-stop glue auxiliary seal Flexible water pipe and row
Gap between waterpipe；Rubber fastening band and expansion water-stop glue meet water volume and expand to reach filling gap, block up real
Leakage passage；Rubber fastening band and expansion water-stop glue meet water volume expansion, under the supporting role of inner lining steel circle, tight filling pressure
Gap between real drainage pipeline inner wall and Flexible water pipe ensures that flow flows through inside Flexible water pipe completely, avoids leaking.
2. a kind of constructing metro tunnel prevents the construction method of top drainage pipeline leaking substance, it is characterised in that：Flexible water pipe is made
For drainage pipeline liner, the method for increasing the tightness of drainage pipeline is applied the existing drainpipe in top is prevented in constructing tunnel field
In the construction of road leakage；The both ends of Flexible water pipe are embedded in as liner steel ring using two steel cylinders, it is ensured that Flexible water pipe intake-outlet
In open configuration, convenient for water delivery；Using between rubber fastening band and expansion water-stop glue filling Flexible water pipe and drainage pipeline inner wall
Gap, rubber fastening band and expansion water-stop glue, which meet water volume intumescent filler gap, ensures that water may not flow into Flexible water pipe and drainpipe
It is leaked between road and then from the crack of drainage pipeline or connector breakage；
The internal diameter of investigation drainage pipeline is needed before construction, the length of pipeline between adjacent two inspection shaft.Water delivery is had made to order according to investigation
Band, Flexible water pipe have certain flexibility and draftability, and the steel cylinder that liner steel ring selects outer diameter to be less than Flexible water pipe internal diameter is advisable, steel
Cylinder height be about；Steel cylinder barrel need to be by certain thickness, and being subject to has enough rigidity support Flexible water pipes, liner steel ring tool
There is certain corrosion protective layer.
3. constructing metro tunnel described in accordance with the claim 2 prevents the construction method of top drainage pipeline leaking substance, special
Sign is：
Constructing operation place is around two inspection shafts：
Step 1：First using particular device by conductor rope through drainage pipeline, wherein an inspection shaft nearby by conductor rope firmly
Tie up to the end of Flexible water pipe；
Step 2：It draws conductor rope and Flexible water pipe is run through into entire drainage pipeline；If pipe diameter is sufficiently large to meet operating personnel
Disengaging demand can artificial traction Flexible water pipe；
Step 3：This operating procedure is intended to Flexible water pipe both ends being fixed on the both ends of drainage pipeline, and water is made to be flowed from Flexible water pipe
It crosses, it is impossible to which the channel between Flexible water pipe and pipeline flows through, and prevents leak；Inner ring steel ring is embedded in Flexible water pipe, it is interior
Lined steel circle props up Flexible water pipe, and Flexible water pipe is made more closely to be bonded with drainage pipeline；
Step 4：This operating procedure is intended to the clearance seal between Flexible water pipe and drainage pipeline wall, it is ensured that in inspection shaft
Water will not be between Flexible water pipe and drainage pipeline wall gap flow into；Specific leak-proof measure is to fill water delivery using rubber water-proof with
Gap between band and drainage pipeline, and it is appropriate be aided with expansion water-stop glue, it is identical with liner steel ring length that length is filled in longitudinal direction；
After more than constructing operation, Flexible water pipe both ends are bonded under inner lining steel circle supporting role with drainage pipeline wall, rubber water-proof
Band and expansion water-stop glue ensure drainage pipeline wall and the close gapless of water delivery interband, it is ensured that the water in inspection shaft is completely from Flexible water pipe
Middle circulation will not be flowed through from the gap of Flexible water pipe and drainage pipeline, be leaked when drainage pipeline destroys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401076.5A CN108194135A (en) | 2017-12-22 | 2017-12-22 | A kind of constructing metro tunnel prevents top drainage pipeline leaking substance and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401076.5A CN108194135A (en) | 2017-12-22 | 2017-12-22 | A kind of constructing metro tunnel prevents top drainage pipeline leaking substance and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194135A true CN108194135A (en) | 2018-06-22 |
Family
ID=62583617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711401076.5A Pending CN108194135A (en) | 2017-12-22 | 2017-12-22 | A kind of constructing metro tunnel prevents top drainage pipeline leaking substance and construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108194135A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531284A (en) * | 2021-07-12 | 2021-10-22 | 中国一冶集团有限公司 | Underground drainage pipeline repairing method and special climbing frame thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062001U (en) * | 1988-09-16 | 1990-09-12 | 张子龙 | Flexible water pipe |
| CN2602246Y (en) * | 2002-08-23 | 2004-02-04 | 于荷茂 | Water delivery belt joint converter |
| JP2004060203A (en) * | 2002-07-26 | 2004-02-26 | Kureha Elastomer Co Ltd | Water leakage preventive structure of tunnel, its construction method and columnar packing |
| CN2721714Y (en) * | 2004-08-17 | 2005-08-31 | 长江水利委员会长江勘测规划设计研究院 | Orifice device of basic weep hole |
| CN103741695A (en) * | 2013-11-29 | 2014-04-23 | 中交第二航务工程局有限公司 | Embedded grouting pipe installed on waterstop and grouting method |
| CN204254058U (en) * | 2014-10-15 | 2015-04-08 | 中国十七冶集团有限公司 | Perforate water string mould after basement |
| CN104964121A (en) * | 2015-07-28 | 2015-10-07 | 中建八局第四建设有限公司 | Blockage method for leakage water in sleeve pipe |
| CN105402500A (en) * | 2014-09-04 | 2016-03-16 | 罗铭 | Water swelling rubber leakage-proof ring |
| CN205558966U (en) * | 2016-04-22 | 2016-09-07 | 杜尧 | A one -way drainer of dual stagnant water for tunnel lining |
| CN106013199A (en) * | 2016-06-29 | 2016-10-12 | 山东省水利科学研究院 | Double wing type plastic soft belt type one-way automatic drainer |
| CN206320464U (en) * | 2016-12-08 | 2017-07-11 | 新疆昌源水务科学研究院（有限公司） | Repairing applied to PCCP pipe fittings connects section |
-
2017
- 2017-12-22 CN CN201711401076.5A patent/CN108194135A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062001U (en) * | 1988-09-16 | 1990-09-12 | 张子龙 | Flexible water pipe |
| JP2004060203A (en) * | 2002-07-26 | 2004-02-26 | Kureha Elastomer Co Ltd | Water leakage preventive structure of tunnel, its construction method and columnar packing |
| CN2602246Y (en) * | 2002-08-23 | 2004-02-04 | 于荷茂 | Water delivery belt joint converter |
| CN2721714Y (en) * | 2004-08-17 | 2005-08-31 | 长江水利委员会长江勘测规划设计研究院 | Orifice device of basic weep hole |
| CN103741695A (en) * | 2013-11-29 | 2014-04-23 | 中交第二航务工程局有限公司 | Embedded grouting pipe installed on waterstop and grouting method |
| CN105402500A (en) * | 2014-09-04 | 2016-03-16 | 罗铭 | Water swelling rubber leakage-proof ring |
| CN204254058U (en) * | 2014-10-15 | 2015-04-08 | 中国十七冶集团有限公司 | Perforate water string mould after basement |
| CN104964121A (en) * | 2015-07-28 | 2015-10-07 | 中建八局第四建设有限公司 | Blockage method for leakage water in sleeve pipe |
| CN205558966U (en) * | 2016-04-22 | 2016-09-07 | 杜尧 | A one -way drainer of dual stagnant water for tunnel lining |
| CN106013199A (en) * | 2016-06-29 | 2016-10-12 | 山东省水利科学研究院 | Double wing type plastic soft belt type one-way automatic drainer |
| CN206320464U (en) * | 2016-12-08 | 2017-07-11 | 新疆昌源水务科学研究院（有限公司） | Repairing applied to PCCP pipe fittings connects section |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531284A (en) * | 2021-07-12 | 2021-10-22 | 中国一冶集团有限公司 | Underground drainage pipeline repairing method and special climbing frame thereof |
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Application publication date: 20180622 |