CN110656948A - Shield tunnel soil discharge and gushing prevention device for soil bin and construction method - Google Patents
Shield tunnel soil discharge and gushing prevention device for soil bin and construction method Download PDFInfo
- Publication number
- CN110656948A CN110656948A CN201911009112.2A CN201911009112A CN110656948A CN 110656948 A CN110656948 A CN 110656948A CN 201911009112 A CN201911009112 A CN 201911009112A CN 110656948 A CN110656948 A CN 110656948A
- Authority
- CN
- China
- Prior art keywords
- soil
- slag
- shield
- water
- prevention device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002689 soil Substances 0.000 title claims abstract description 75
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 230000002265 prevention Effects 0.000 title claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000002245 particle Substances 0.000 claims abstract description 42
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 238000007599 discharging Methods 0.000 claims description 29
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000006260 foam Substances 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 15
- 230000005641 tunneling Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
- E21D9/0678—Adding additives, e.g. chemical compositions, to the slurry or the cuttings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a shield tunnel soil discharge and gushing prevention device for a soil bin and a construction method, and belongs to the field of tunnel construction. The shield tunnel face water burst prevention device comprises a shield machine, a cutter head arranged on the shield machine, an accommodating box arranged in the shield machine, water absorption particles arranged in the accommodating box, and a pneumatic pump arranged in the shield machine and communicated with the accommodating box, wherein the construction method of the shield tunnel face water burst prevention device comprises the following steps: adding a water inrush preventing device on the tunnel face of the shield tunneling machine; starting the shield machine and observing the slag discharge condition of the shield machine, pressing water-absorbing particles into a soil pressure bin of the shield machine by using an air pressure pump when an obvious gushing phenomenon occurs or the water content of slag soil is more than 50% during slag discharge, and then continuously observing the slag discharge condition; the invention does not need a large amount of personnel to process until the slag is discharged normally, is economic and reasonable, improves the construction efficiency, ensures the construction period and also ensures the construction safety.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a shield tunnel soil discharge and gushing prevention device and a construction method.
Background
The shield method is a fully mechanical construction method in the construction of the subsurface excavation method, in the process of constructing a tunnel by the shield method, a tunneling machine excavates the tunnel at the front end, and a segment erector assembles a segment lining ring to support the tunnel which is just excavated. In addition, urban subway tunnels are generally constructed depending on cities, and the cities are generally constructed along the mountains and the water, so that the tunnels are constructed frequently under the condition of abundant underground water, the situation of overlarge water inflow can occur on the tunnel faces in the shield construction tunneling process, the construction loss can be caused, and the life safety of field personnel is threatened seriously.
When the underground water in the shield construction area is found to be abundant, a stirring pile seepage-proofing and reinforcing method is generally adopted, and stirring pile seepage-proofing walls and the like are prefabricated in advance mainly aiming at the front and two sides of the shield machine. When water gushes on the tunnel face of the shield tunnel, methods such as a plugging method, cement press filling, polyurethane injection, water pumping and drainage in the tunnel and the like are generally adopted, so that the problem of large water gushing on site is solved. The above method can seriously affect the efficiency of construction and the construction period in terms of treatment, and in addition, a large amount of tunnel face waste and the like can be caused, so that the better treatment is difficult. Although the resin has a slightly lower water absorption than the super absorbent resin, the resin is expensive and is not suitable for use in large amounts.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a shield tunnel soil discharge and gushing prevention device and a construction method, and the specific technical scheme is as follows:
the utility model provides a shield tunnel prevents that soil storehouse is arranged soil and is spouted device, includes the shield constructs the machine, sets up the blade disc on the shield constructs the machine, sets up the holding case in the shield constructs the machine, sets up the granule that absorbs water in the holding case, sets up in the shield constructs the machine and with the pneumatic pump of holding case intercommunication, is equipped with the transmission pipe on the holding case, the transmission pipe passes the blade disc and communicates with the tunnel face, is equipped with the valve on the transmission pipe.
According to the invention, a worker observes the slag discharging condition when the shield machine discharges slag, and when the slag discharging phenomenon is obvious or the water content of the slag is larger, the pneumatic pump is started and pressure is applied to the water absorption particles in the containing box, so that the water absorption particles are pressed into the soil bin through the transmission pipe under the air pressure of the pneumatic pump, the water absorption particles are mixed with the slag on the working face and are fully adhered and combined with the slag, the moisture in the slag is absorbed, the problem of larger water content of the slag is solved, and the problem that the water content of the slag in the soil bin is too large, and the soil discharging efficiency is influenced to influence the construction process is avoided.
Preferably, one end of the transmission pipe close to the cutter head is arranged coaxially with the cutter head.
The conveying pipe and the cutter head are coaxially arranged, so that one end of the conveying pipe close to the cutter head is arranged at the central position of the cutter head, and water absorption particles can be uniformly and fully mixed with the muck when being conveyed into the tunnel soil bin.
A construction method of a shield tunnel soil discharge and gushing prevention device comprises the following steps in sequence:
(S1): adding a water inrush preventing device at the face of the shield tunneling machine and adding water absorbing particles into the accommodating box;
(S2): starting the shield machine and observing the slag discharge condition of the shield machine, wherein when the slag discharge is normal, a water inrush prevention device is not needed;
when obvious gushing occurs during slag discharging or the water content of the slag soil is more than 50%, starting the pneumatic pump and opening the valve to press water-absorbing particles into the soil bin under the pressure action of the pneumatic pump, and then continuously observing the slag discharging condition;
(S3): observing the slag discharge condition again, and closing the pneumatic pump and the valve when the slag discharge is normal;
when the obvious gushing phenomenon still occurs during slag discharging or the water content of the slag soil is more than 50 percent, the pneumatic pump is started, the valve is opened to enable the water-absorbing particles to be continuously pressed into the soil bin until the slag discharging is normal, and then the pneumatic pump and the valve are closed.
According to the invention, the device for adjusting the water content of the muck in the soil bin is additionally arranged on the shield machine, when the slag is obviously gushed or the water content of the muck is larger, the pneumatic pump is started to transmit the water-absorbing particles to the tunnel face of the tunnel, so that the water-absorbing particles are mixed with the muck in the soil bin and fully adhered and combined with the muck, the water in the muck is absorbed, the problem of high water content of the muck is solved, and the problem that the construction process is influenced due to the fact that the water content of the muck in the soil bin is too large and the soil discharging efficiency is influenced is avoided.
Preferably, the slag discharged in the steps (S2) and (S3) is normally slag which can be smoothly discharged from the shield machine.
Preferably, the water absorbing particles in step (S1) are made of foam particles.
The water-absorbing particles made of the foam particles are simple to manufacture, can be purchased in large quantities, and are low in price and low in use cost; meanwhile, the foam particle water absorption material belongs to a degradable material, soil, underground water sources and the like cannot be polluted, and the discharged muck can be used in other places, such as muck recycling and the like.
The invention has the following beneficial effects:
according to the invention, a worker observes the slag discharging condition when the shield machine discharges slag, and when the slag discharging phenomenon is obvious or the water content of slag soil is larger, the pneumatic pump is started and pressure is applied to the water absorbing particles in the containing box, so that the water absorbing particles are pressed into the soil bin through the transmission pipe under the air pressure of the pneumatic pump, the water absorbing particles are mixed with the slag soil on the working face and are fully adhered and combined with the slag soil, the moisture in the slag soil is absorbed, the problem of larger water content of the slag soil is solved, and the influence on the soil discharging efficiency due to the fact that the water content of the slag soil in the soil bin is too large to influence the construction process is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention during construction;
figure 2 is a front view of the cutterhead of the present invention.
In the figure: 1-a shield machine; 2-cutter head; 3-a containing box; 4-water-absorbing particles; 5-a pneumatic pump; 6-a conveying pipe; 7-valve, 8-soil bin, 9-soil bin residue soil
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 2, the soil discharge and gushing prevention device for the soil-proof bin of the shield tunnel in the embodiment includes a shield machine 1 for excavation and a cutter head 2 arranged on the shield machine 1, wherein a containing box 3 is arranged in the shield machine 1, water-absorbing particles 4 for absorbing water from muck are arranged in the containing box 3, a pneumatic pump 5 for providing pneumatic force is arranged in the shield machine 1, and an output end of the pneumatic pump 5 is communicated with an inner cavity of the containing box 3. The accommodating box 3 is provided with a conveying pipe 6 for conveying the water absorption particles 4 to the tunnel face of the tunnel, and the conveying pipe 6 is provided with a valve 7 for controlling the on-off of the conveying pipe 6.
Further referring to fig. 1, the transmission pipe 6 penetrates through the cutter head 2 and is communicated with the tunnel soil bin, and one end, close to the cutter head 2, of the transmission pipe 6 is arranged coaxially with the cutter head 2, so that one end, close to the cutter head 2, of the transmission pipe 6 is arranged at the center of the cutter head 2, and the water absorption particles 4 can be uniformly and fully mixed with the muck when being conveyed to the tunnel soil bin. The staff observes the condition of slagging tap when shield structure machine 1 is slagging tap, take place obvious gushing phenomenon or the dregs water content is great when slagging tap, then start pneumatic pump 5 and exert pressure to the granule 4 that absorbs water in the holding case 3, make the granule 4 that absorbs water impress in the soil storehouse through transmission pipe 6 under pneumatic pump 5's atmospheric pressure, it mixes and combines with the abundant adhesion of dregs to absorb water granule 4 and face dregs, adsorb the moisture in the dregs and solved the more problem of dregs water content, it is too big to avoid dregs water content in the soil storehouse, influence the condition of the efficiency of dumping and influence the construction process.
The construction method of the shield tunnel soil discharge and gushing prevention device comprises the following steps in sequence:
(S1): adding an anti-soil bin soil discharge and gushing device at the face of the shield tunneling machine 1, and adding water-absorbing particles 4 into the accommodating box 3, wherein the water-absorbing particles 4 are made of foam particles;
the water absorption particles 4 made of foam particles are simple to manufacture, can be purchased in large quantities, and are low in price and low in use cost; meanwhile, the foam particle water absorbing material belongs to a degradable material, so that soil, underground water sources and the like cannot be polluted, and the discharged muck can be used in other places, such as muck recycling and the like;
(S2): the shield machine 1 is started and the slag discharging condition of the shield machine 1 is observed, and when slag discharging is normal, namely, slag can be smoothly discharged from the shield machine 1, the water inrush preventing device is not required to be utilized.
Example 2
The construction method of the shield tunnel soil discharge and gushing prevention device in the embodiment sequentially comprises the following steps:
(S1): adding a water inrush preventing device at the face of the shield machine 1 and adding water absorbing particles 4 into the accommodating box 3;
(S2): starting the shield tunneling machine 1 and observing the slag discharging condition of the shield tunneling machine 1, wherein an obvious gushing phenomenon occurs or the water content of slag soil is more than 50% when the slag is discharged, starting the pneumatic pump 5 and opening the valve 7 to press the water-absorbing particles 4 into the soil bin under the pressure action of the pneumatic pump 5, and then continuously observing the slag discharging condition;
(S3): and observing the slag discharging condition again, and closing the pneumatic pump 5 and the valve 7 when the slag discharging is normal, namely the slag can be smoothly discharged from the shield tunneling machine 1.
Example 3
The construction method of the shield tunnel soil discharge and gushing prevention device in the embodiment sequentially comprises the following steps:
(S1): adding an anti-soil bin soil discharge and gushing device at the face of the shield tunneling machine 1 and adding water-absorbing particles 4 into the accommodating box 3;
(S2): starting the shield tunneling machine 1 and observing the slag discharging condition of the shield tunneling machine 1, wherein an obvious gushing phenomenon occurs or the water content of slag soil is more than 50% when the slag is discharged, starting the pneumatic pump 5 and opening the valve 7 to press the water-absorbing particles 4 into the soil bin under the pressure action of the pneumatic pump 5, and then continuously observing the slag discharging condition;
(S3): observing the slag discharging condition again, starting the pneumatic pump 5 and opening the valve 7 to enable the water-absorbing particles 4 to continuously flush into the tunnel face until the slag discharging is normal, and then closing the pneumatic pump 5 and the valve 7 if the obvious gushing phenomenon still occurs or the water content of the slag soil is more than 50% during the slag discharging.
According to the invention, a worker observes the slag discharging condition when the shield machine 1 discharges slag, when the slag discharging has obvious gushing phenomenon or the moisture content of the slag soil is larger, the pneumatic pump 5 is started and pressure is applied to the water absorption particles 4 in the accommodating box 3, so that the water absorption particles 4 move to the tunnel face through the transmission pipe 6 under the air pressure of the pneumatic pump 5, the water absorption particles 4 are mixed with the face slag soil and are fully adhered and combined with the slag soil, the moisture in the slag soil is absorbed, the problem of more moisture content of the slag soil is solved, and the problem that the moisture content of the slag soil in the soil bin is too large to influence the soil discharging efficiency and influence the construction process is avoided.
It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a shield tunnel prevents that soil storehouse is arranged soil and is spouted device, its characterized in that, including shield constructs quick-witted (1), sets up cutter head (2) on shield constructs quick-witted (1), sets up holding case (3) in shield constructs quick-witted (1), sets up granule (4) of absorbing water in holding case (3), sets up in shield constructs quick-witted (1) and pneumatic pump (5) with holding case (3) intercommunication, be equipped with transmission pipe (6) on holding case (3), transmission pipe (6) pass cutter head (2) and with tunnel face intercommunication, be equipped with valve (7) on transmission pipe (6).
2. The soil discharge and gushing prevention device for the shield tunnel of claim 1, wherein one end of the transmission pipe (6) close to the cutterhead (2) is arranged coaxially with the cutterhead (2).
3. A construction method of a shield tunnel soil discharge and gushing prevention device for a soil bin is characterized by sequentially comprising the following steps:
(S1): adding a water inrush preventing device at the face of the shield machine and adding water absorbing particles (4) into the containing box;
(S2): starting the shield machine and observing the slag discharge condition of the shield machine, wherein when the slag discharge is normal, a water inrush prevention device is not needed;
when obvious gushing occurs during slag discharging or the water content of the slag soil is more than 50%, starting the pneumatic pump and opening the valve to enable water-absorbing particles to be flushed into the soil pressure bin under the pressure action of the pneumatic pump, and then continuously observing the slag discharging condition;
(S3): observing the slag discharge condition again, and closing the pneumatic pump and the valve when the slag discharge is normal;
when the obvious gushing phenomenon still occurs during slag discharging or the water content of the slag soil is more than 50 percent, the pneumatic pump is started, the valve is opened to enable the water-absorbing particles to continuously flush into the soil pressure bin until the slag discharging is normal, and then the pneumatic pump and the valve are closed.
4. The construction method of the shield tunnel soil discharge and gush prevention device of claim 3, wherein the slag in the steps (S2) and (S3) is normally slag which can be smoothly discharged from the shield machine.
5. The construction method of the shield tunnel soil discharge and gush prevention device of claim 3, wherein the water absorption particles in the step (S1) are foam particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911009112.2A CN110656948A (en) | 2019-10-23 | 2019-10-23 | Shield tunnel soil discharge and gushing prevention device for soil bin and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911009112.2A CN110656948A (en) | 2019-10-23 | 2019-10-23 | Shield tunnel soil discharge and gushing prevention device for soil bin and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110656948A true CN110656948A (en) | 2020-01-07 |
Family
ID=69041530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911009112.2A Pending CN110656948A (en) | 2019-10-23 | 2019-10-23 | Shield tunnel soil discharge and gushing prevention device for soil bin and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110656948A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024202A (en) * | 2021-03-10 | 2021-06-25 | 青海黄河上游水电开发有限责任公司 | Prefabricated guard plate at edge of foundation pit and preparation method, application and construction method thereof |
| CN113250712A (en) * | 2021-06-17 | 2021-08-13 | 北京市政建设集团有限责任公司 | A novel screw machine prevents spouting structure for shield constructs construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220377A (en) * | 1999-02-02 | 2000-08-08 | Penta Ocean Constr Co Ltd | Method for reusing discharged soil in high density slurry shield work |
| CN203655301U (en) * | 2013-11-06 | 2014-06-18 | 中铁十八局集团第三工程有限公司 | High-molecular-polymer injection system |
| CN105041326A (en) * | 2015-06-12 | 2015-11-11 | 北京城建设计发展集团股份有限公司 | Water-rich diabase and slate irregular mutual invasion rock shield residue soil improving method |
| CN206495678U (en) * | 2017-02-21 | 2017-09-15 | 厦门厦工中铁重型机械有限公司 | A kind of main driving HBW grease injection devices of the shield of improvement |
| CN109488324A (en) * | 2018-09-19 | 2019-03-19 | 中交第二航务工程局有限公司 | The anti-mud of intelligence is gushed system in earth pressure shield tunneling machine mining process |
| CN208885335U (en) * | 2018-09-25 | 2019-05-21 | 四川路桥盛通建筑工程有限公司 | A kind of tunnel tunnel face blast working device for reducing dust |
-
2019
- 2019-10-23 CN CN201911009112.2A patent/CN110656948A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220377A (en) * | 1999-02-02 | 2000-08-08 | Penta Ocean Constr Co Ltd | Method for reusing discharged soil in high density slurry shield work |
| CN203655301U (en) * | 2013-11-06 | 2014-06-18 | 中铁十八局集团第三工程有限公司 | High-molecular-polymer injection system |
| CN105041326A (en) * | 2015-06-12 | 2015-11-11 | 北京城建设计发展集团股份有限公司 | Water-rich diabase and slate irregular mutual invasion rock shield residue soil improving method |
| CN206495678U (en) * | 2017-02-21 | 2017-09-15 | 厦门厦工中铁重型机械有限公司 | A kind of main driving HBW grease injection devices of the shield of improvement |
| CN109488324A (en) * | 2018-09-19 | 2019-03-19 | 中交第二航务工程局有限公司 | The anti-mud of intelligence is gushed system in earth pressure shield tunneling machine mining process |
| CN208885335U (en) * | 2018-09-25 | 2019-05-21 | 四川路桥盛通建筑工程有限公司 | A kind of tunnel tunnel face blast working device for reducing dust |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024202A (en) * | 2021-03-10 | 2021-06-25 | 青海黄河上游水电开发有限责任公司 | Prefabricated guard plate at edge of foundation pit and preparation method, application and construction method thereof |
| CN113250712A (en) * | 2021-06-17 | 2021-08-13 | 北京市政建设集团有限责任公司 | A novel screw machine prevents spouting structure for shield constructs construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102536253B (en) | Construction method of earth cabin back filling and cabin entering operation during earth pressure shielding | |
| CN103061776B (en) | Method for repairing TBM (tunnel boring machine) cutter head in intra-tunnel high-pressure environment | |
| CN102094650B (en) | Construction method for shield entry under complicated working conditions | |
| CN101644161B (en) | Water stopping device for tunneling machine going in and out of tunnel and water stopping method | |
| CN110656948A (en) | Shield tunnel soil discharge and gushing prevention device for soil bin and construction method | |
| CN103696779A (en) | Tunnel face breast wall filter cake construction process for shield compressed air operations | |
| CN108952746B (en) | Gushing prevention device, using method and spiral conveyor | |
| CN204002831U (en) | A kind of screw machine blowout prevention structure | |
| CN110359917A (en) | Sand-pebble layer large-diameter shield tool changing construction method with pressure | |
| CN108825298B (en) | Roof connecting method for stope filling | |
| CN101457654B (en) | Telescopic type pulling hole packer | |
| CN102977868B (en) | Hole sealing material for gas and blast drilling underground coal mine | |
| CN103291354B (en) | Floor rock roadway layer-crossing pressure relief drilling filling and reinforcing method | |
| CN110645005A (en) | High-water-rich round gravel stratum earth pressure balance shield rapid tunneling construction method | |
| CN102493840B (en) | Method for filling underground spaces and system for filling underground spaces | |
| CN202023532U (en) | Hole packer for reinforcing for grouting in coal mine | |
| CN105257309B (en) | In a kind of layer of sand in balancing earth-pressure shielding machine storehouse slip casting tool changing construction method | |
| CN109505653A (en) | A kind of stifled arrange of convertible type of rich water tunnel combines supporting construction | |
| CN207048813U (en) | Sealing and leakage plugging device for gas pumping | |
| CN108979646B (en) | Method for replacing soil bin medium of shield tunneling machine in freezing process | |
| CN205117355U (en) | Branch storehouse formula sand gas that replaces tunnel just to serve as a contrast closes and fills lining cutting structure | |
| CN112610271B (en) | Drilling tank slurry backfilling device and method for coal mining subsidence area treatment | |
| CN212225213U (en) | Inclined shaft construction equipment | |
| CN209621267U (en) | Assembled grouting pipe voluntarily slurry stop | |
| CN113323696B (en) | Tunnel waterproof leaking stoppage reinforced structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200107 |
|
| RJ01 | Rejection of invention patent application after publication |