CN203796288U - Water seepage prevention structure used for shield entrance door employing SMW piles - Google Patents
Water seepage prevention structure used for shield entrance door employing SMW piles Download PDFInfo
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- CN203796288U CN203796288U CN201420202139.XU CN201420202139U CN203796288U CN 203796288 U CN203796288 U CN 203796288U CN 201420202139 U CN201420202139 U CN 201420202139U CN 203796288 U CN203796288 U CN 203796288U
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Abstract
The utility model provides a water seepage prevention structure used for a shield entrance door employing SMW (Soil Mixing Wall) piles. The water seepage prevention structure used for the shield entrance door employing the SMW piles includes an SMW pile enclosing structure of a shield end well and a shield end reinforcing structure. The water seepage prevention structure is characterized by comprising a temporary blocking wall arranged in a shield tunnel entrance and composed of steel rib meshes fixed in the entrance and a concrete sealing layer poured on the steel rib meshes. When a H-shaped steel section of the SMW pile enclosing structure corresponding to the shield tunnel entrance is being pulled up, cement paste is poured synchronously such that a cement filler layer having the same shape with the H-shaped steel section is formed in an H-shaped steel insertion hole. The water seepage prevention structure is simple in structure and convenient for construction. Water leakage and seepage of the shield tunnel entrance can be prevented effectively and safety risks of a shield tunneling machine entering and exiting a tunnel can be reduced. A period of renting the H-shaped steel section of the SMW piles can be shortened and construction cost can be saved.
Description
Technical field
The utility model relates to Soft Soil Layer Shield-bored tunnels hole preventing water leakage technology, specifically a kind of while adopting the stake of SMW engineering method as the space enclosing structure of shield tunnel end well, for shield tunnel portal reinforcing anti-seepage water-bound.
Background technology
The stake of SMW engineering method is in the triaxial cement mixing pile of socket continuously, to insert the compound gear soil water-stopping structure that shaped steel forms, original soil is reinforced to the form of construction work that once becomes wall, construction technology is simple, duration is shorter, do not reclaiming under the prerequisite of shaped steel, its expense of going along with sb. to guard him itself is only 70% of diaphragm wall, if consider the recovery of shaped steel, expense can drop to below 60%.Although shaped steel Soil-cement Wall has had good economic benefit and social benefit, but domestic always to the mechanism of action of this engineering method, the research of design theory shortage, shortage can foundation shaped steel Soil-cement Wall design specifications and theoretical writings, and shaped steel reclaims the problems such as difficulty, restricted shaped steel Soil-cement Wall the applying of China, but the use of SMW engineering method stake is relatively extensive.
By the stake of SMW engineering method, for the space enclosing structure of the starting of shield tunnel, destination vertical shaft, be more common construction method, specifically adopt the stake of SMW engineering method that the shield tunnel starting station is gone along with sb. to guard him, then excavation is built a station, after build up at the starting station, again the H shaped steel in the stake of SMW engineering method is extracted, and the H shaped steel at place, corresponding shield tunnel hole continues to be retained in the effect of going along with sb. to guard him of playing tunnel portal in pile body, when the contiguous tunnel portal of shield machine, the H shaped steel of just hole being located in concrete stake is extracted.Adopt in this way, the H shaped steel at shield tunnel hole need to be detained for a long time in pile body, general constructing tunnel at least needs to stop half a year, for some special construction plants, even can stop more than 1 year, because existing work progress H shaped steel is generally the mode that adopts lease, so just, can greatly increase rent, improve construction cost; In addition, after the H shaped steel in stake is extracted, just can in pile body, reserve a cavity equating with H shaped steel volume, underground water just can infiltrate along cavity, causes shield tunnel hole infiltration phenomenon, increases shield machine turnover hole potential safety hazard.
Summary of the invention
The utility model rises and pulls out the problem that reclaims rear percolating water according to gap processing method and SMW engineering method stake H shaped steel between existing subway foundation pit SMW engineering method stake foundation pit enclosure structure, shield tunnel end well reinforcing body, reinforcing body and space enclosing structure, and a kind of improvement SMW engineering method stake tunnel shielding portal seepage-proof structure is provided.Improved shield tunnel portal percolating water is simple in structure, and its Construction on Environment is polluted less, hydrogeological situation is with strong points, and has improved shield structure turnover hole safety factor, shortening H shaped steel leasing period, has reduced construction cost.
The technical scheme that the utility model provides: described a kind of SMW engineering method stake tunnel shielding portal seepage-proof structure comprises the SMW engineering method stake space enclosing structure of shield end well, outside in the corresponding shield tunnel of SMW engineering method stake space enclosing structure hole part is provided with shield end ruggedized construction, it is characterized in that: this seepage-proof structure also comprises the temporary plugging wall that is arranged on place, shield tunnel hole, described temporary plugging wall is comprised of the concrete dense sealing that is fixed on the reinforced mesh at hole and be cast on reinforced mesh; Mode by synchronous grout injection in the H shaped steel of the corresponding shield tunnel of SMW engineering method stake space enclosing structure hole part pulls up process forms the cement packed layer identical with H beam steel shape in H shaped steel jack.
The further technical scheme of the utility model: the mode by triple-pipe high pressure jet grouting in the gap between SMW engineering method stake space enclosing structure and shield end ruggedized construction forms triple-pipe high pressure jet grouting stake interlock body of wall.
The utility model is technical scheme preferably: described temporary plugging wall thickness 600-800mm, be provided with two-layer reinforced mesh, and the edge of two-layer reinforced mesh is all welded in the portal steel loop at shield tunnel hole.
The utility model is technical scheme preferably: described shield end ruggedized construction is triaxial cement mixing pile reinforcing body.
The construction method of a kind of SMW engineering method stake tunnel shielding portal seepage-proof structure that the utility model provides, its concrete steps are as follows:
The construction method of described SMW engineering method stake tunnel shielding portal seepage-proof structure, its concrete steps are as follows:
(1) in the SMW engineering method stake space enclosing structure of shield end well foundation ditch and the construction of conventional soil cement stirring body shield end well reinforcing body, complete laggard driving station main structure construction, shield end well reinforcing body adopts three axle agitation piles to construct with the mode that triple-pipe high pressure jet grouting stake interlock body of wall combines, after construct in the position at the corresponding shield structure of agent structure hole AT STATION (being the installation of portal steel loop and the body of wall around portal) or after the main structure construction of whole station completes, welded steel double reinforced mesh in portal steel loop, and use form for seal portal, adopt ground pump to concreting on reinforced mesh, reinforced mesh is covered completely, after concrete setting, take away template, just at shield tunnel hole, form one temporary plugging wall,
(2) when the temporary plugging wall in station agent structure and step (1) has been constructed and has reached design strength, start to pull up the H shaped steel in SMW engineering method stake space enclosing structure, first the H shaped steel in the pile body of body of wall position, the corresponding station of SMW engineering method stake space enclosing structure is directly extracted, before pulling up the SMW engineering method stake H shaped steel of corresponding shield tunnel hole part, the transverse plate two side walls of the H shaped steel in first from each pile body upper surface at this position along this pile body forms two upper and lower unobstructed cement injections to pile body bottom hole respectively and draws hole, two cement injections on each pile body draw the steel wall that H shaped steel is close in hole, and make after this H shaped steel extracts, cement injection on this pile body draws the jack forming at pile body after pile body is inserted with this H shaped steel in hole and is communicated with,
(3) after treating that step (2) completes, just start to pull up the H shaped steel in the SMW engineering method stake of corresponding shield tunnel hole part, in pulling up process, use by the H shaped steel of every SMW engineering method stake sleeve valve pipe grouting process by cement injection, to draw hole to simultaneous implantation cement grout in H shaped steel jack in this pile body simultaneously, when the H shaped steel in pile body is extracted completely, in its H shaped steel jack, fill with cement grout simultaneously, after cement grout is solid, just form one with the stake of SMW engineering method, after all H shaped steel pulls up, the H shaped steel jack of each SMW engineering method stake of corresponding shield tunnel hole part all fills up by cement grout, form the body of wall completing together.Its half sleeve valve pipe grouting process specific practice is: in step (2) boring, in hole is drawn in each slip casting, pour into sealing mud, and insert the igelite sleeve valve pipe of one-way sealing, mud to be closed solidifies in backward igelite sleeve valve pipe and inserts sealing slip casting core pipe, connect grouting pipeline, just start to pull up the H shaped steel in the SMW engineering method stake of corresponding shield tunnel hole part, in pulling up process, the H shaped steel of every SMW engineering method stake by slip casting core pipe injection cement grout merogenesis, moves slip casting core pipe simultaneously, when the H shaped steel in pile body is extracted completely, in its H shaped steel jack, fill with cement grout simultaneously, after cement grout is solid, just form one with the stake of SMW engineering method, igelite sleeve valve pipe rests in pile body, wherein the Main Function of one-way sealing sleeve valve pipe is that level is distinguished in the requirement in accordance with regulations of assurance slurries, and guarantee that slurries only spray from valve pipe, and prevent that adverse current from entering in valve pipe, for secondary even repeatedly slip casting create conditions, and can in slip casting process, to the soil body, play certain stabilization.
The utility model is further comprising the steps of: after step (3) completes, shield machine arrives first 2 months of tunnel portal, adopts triple-pipe high pressure jet grouting stake to penetrate micro-artesian aquifer and processes the gap formation triple-pipe high pressure jet grouting stake interlock body of wall between reinforcing body and SMW engineering method piling wall body, and after triple-pipe high pressure jet grouting stake interlock body of wall reaches design strength, on portal temporary plugging wall, to get a plurality of diameters be 2-3cm level detection hole, at least six, be evenly distributed on temporary plugging wall, each level detection hole depth enters in cement-soil reinforcing body, and judge reinforcing waterproof quality by the infiltration phenomenon of eye-level exploration hole, will be more serious if reinforce the infiltration in waterproof quality level detection not up to standard hole, if there is situation not up to standard, just take the mode of igelite sleeve valve pipe secondary grouting, or again adopt triple-pipe high pressure jet grouting stake to process the position, gap between reinforcing body and SMW engineering method piling wall body.
In the step of construction method described in the utility model (3) before starting to pull out H shaped steel, first at the cement injection of each pile body, draw in hole and insert an igelite sleeve valve pipe, treat cement injection complete after igelite sleeve valve pipe rest in pile body.
The stake of SMW engineering method is with fountain type, to bore pick mixer to certain depth, to bore pick at the scene, simultaneously drill bit place ejection cement be hardening agent and with foundation soil mix and blend repeatedly, between each construction cell, take overlapping lapping construction, then before not tying firmly, inserts cement-soil mixture H shaped steel or steel plate as its stress reinforcing material, hard to cement knot, just form and there is together some strength and rigidity, continuous whole, jointless underground wall body.What SMW engineering method was the most frequently used is that three axle types bore pick mixer.
The beneficial effects of the utility model:
1. the utility model is before the H shaped steel in SMW engineering method stake safeguard structure is extracted in main structure construction after completing AT STATION, first at shield tunnel portal, form and see provisional protection wall, this protecting wall can protect shield tunnel hole, all H shaped steel in SMW engineering method stake safeguard structure can be extracted together, this protecting wall can play to hole part the effect of supporting protection, described SMW engineering method stake space enclosing structure body of wall H shaped steel rises and pulls out time advance, reduced the time of burying underground of the shield tunnel hole H of place shaped steel, reduced the tenancy duration of this position H shaped steel, thereby saving construction cost,
2. provisional protection wall of the present utility model is to be formed by steel mesh reinforcement and concrete, its construction is simple, with low cost, and two-layer steel mesh reinforcement is set, increased its stablizing effect, steel mesh reinforcement is laid from shield end well inner side, when shield machine is about to arrive this position, steel mesh reinforcement can be chiseled, can not affect the normal shield structure of shield machine yet, for H shaped steel rises, pull out synchronous grouting enclosed environment is provided, and reduced the shield machine turnover hole risk causing because of portal percolating water;
3. before the H shaped steel of the utility model in the SMW engineering method stake safeguard structure of extracting place, corresponding shield tunnel hole, from every pile body upper end, being close to the outer wall of H shaped steel holes downwards, and introduce igelite sleeve valve pipe, when extracting H shaped steel, by this pipeline, to pile body, originally place in the cavity of H shaped steel and inject cement grout, filling H shaped steel rises and pulls out rear space, blocking groundwater seepage passage, it is so a complete seal chamber that safeguard structure after H shaped steel is extracted is appointed, avoid occurring percolating water phenomenon, also increased the stability of this safeguard structure simultaneously, every pile body cavity is filled up, and igelite sleeve valve pipe can be placed in pile body, not affecting shield machine turnover hole cutterhead normally tunnels,
The utility model is simple in structure, geological condition is with strong points, easy construction, low in the pollution of the environment, can well prevent the percolating water phenomenon at shield tunnel hole, reduced the security risk in shield machine turnover hole, shorten SMW engineering method stake H shaped steel leasing period, save construction cost, realize the doulbe-sides' victory of economy, environmental benefit.
Accompanying drawing explanation
Fig. 1 is End Shaft at Underground Metro Station space enclosing structure and tunnel shielding portal reinforcing body floor map;
Fig. 2 is end well and shield tunnel longitudinal plane structure schematic diagram;
Fig. 3 is that H shaped steel rises and pulls out synchronous grouting sleeve valve Guan Yinkong burial place schematic diagram;
Fig. 4 buries H shaped steel underground to work the pile body top view pulling out after synchronous grouting sleeve valve pipe;
Fig. 5 extracts the pile body sectional drawing not being in the milk after H shaped steel;
Fig. 6 extracts the pile body top view that pours into cement grout after H shaped steel;
Fig. 7 is the plan view of shield tunnel portal block wall;
Fig. 8 is the longitudinal sectional drawing of shield tunnel portal block wall.
In figure: 1-subway station shield launching arrives end well, 2-SMW engineering method stake space enclosing structure, 3-H shaped steel, 4-shield end ruggedized construction, 5-triple-pipe high pressure jet grouting stake interlock body of wall, 6-shield tunnel, 7-temporary plugging wall, 7-1-reinforced mesh, 7-2-concrete dense sealing, 8-portal steel loop, 9-cement packed layer, 10-sleeve valve pipe, 11-cement grout draws hole, 12-H shaped steel jack.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further described, in Fig. 1, described a kind of SMW engineering method stake tunnel shielding portal seepage-proof structure, the SMW engineering method stake space enclosing structure 2 that comprises shield end well, SMW engineering method stake space enclosing structure 2 adopts a construction technique of SMW engineering method stake to complete, outside in SMW engineering method stake space enclosing structure 2 corresponding shield tunnel hole parts is provided with shield end ruggedized construction 4, the reinforcing mode that shield end ruggedized construction 4 adopts three axle agitation piles to combine with triple-pipe high pressure jet grouting stake, it is characterized in that: this seepage-proof structure also comprises the temporary plugging wall 7 that is arranged on place, shield tunnel hole, as shown in Figure 6, described temporary plugging wall 7 is comprised of the concrete dense sealing 7-2 that is fixed on the reinforced mesh 7-1 at hole and be cast on reinforced mesh, as shown in Figure 7, described temporary plugging wall 7 thickness are 600mm, be provided with two-layer reinforced mesh, the edge of two-layer reinforced mesh is all welded in the portal steel loop 8 at shield tunnel hole, then adopt and add template and the mode by ground pump concreting forms, mode by synchronous grout injection in the H shaped steel of SMW engineering method stake space enclosing structure 2 corresponding shield tunnel hole parts pulls up process forms the cement packed layer 9 identical with H beam steel shape in H shaped steel jack, its grouting mode is before H shaped steel pulls up, as shown in Figure 3, from each pile body upper end, be close to the both sides of H shaped steel intermediate lateral plate respectively to pile body bottom hole, form a cement injection and draw hole, then in drawing hole, the mud slip casting of each pile body inserts igelite sleeve valve pipe, when pulling up H shaped steel, by the igelite valve pipe of tucking inside the sleeve, in H shaped steel jack, inject cement grout, when H shaped steel pulls up completely, in H shaped steel jack, fill with cement grout simultaneously, after solidifying, cement grout just forms cement packed layer 9, mode by triple-pipe high pressure jet grouting in gap between SMW engineering method stake space enclosing structure 2 and shield end ruggedized construction 4 forms triple-pipe high pressure jet grouting stake interlock body of wall 5.
Below in conjunction with embodiment, the technical scheme in the utility model is clearly and completely described.
Embodiment: the present embodiment specifically Yi Mou city Line 2 Metro A station is individual layer station, and end well place, station adopts SMW engineering method stake space enclosing structure, and end well foundation depth is 11.9m, the long 21.4m of stake, engineering method stake H shaped steel insertion depth 9.6m, inserts than 0.81.End well is reinforced the Scheme of Strengthening that adopts three axle agitation piles to combine with triple-pipe high pressure jet grouting stake, reinforces volume 9m (along line direction width) * 21.4m (along headwall direction length) * 12.2m (degree of depth).A stands western end well using tune and starting well use as B station unit in charge of construction shield machine, and A station 70m end well agent structure binds in by the end of July, 2010 in, plans to start space enclosing structure SMW engineering method stake H shaped steel mid-August and pulls out.The factor impacts such as B station changes because pipeline moves, shield machine could arrive in by the end of December, 2012 A station end well after starting in B station in.As according to conventional construction technique, before the end well portal of shield machine arrival A station, carrying out H shaped steel pulls out, the close slotting H shaped steel in end well position need to buried 16 months underground in space enclosing structure, as agreed, exceed the time limit at least 40 ten thousand yuan of rents of H shaped steel, and adopt conventional construction technique also to occur drainage, affect the normal shield structure of shield machine.
Unit in charge of construction and designing unit adopt the construction method of SMW engineering method stake tunnel shielding portal seepage-proof structure described in the utility model for this reason, and its concrete steps are as follows:
(1) after completing, the SMW engineering method stake space enclosing structure of shield end well foundation ditch that unit in charge of construction stands at A and the construction of conventional soil cement stirring body shield end well reinforcing body start to carry out station main structure construction, and after A station station main structure construction completes, at B, stand to welded steel double reinforced mesh in the portal steel loop at the shield tunnel hole at A station, and use form for seal portal, adopt ground pump to concreting on reinforced mesh, reinforced mesh is covered completely, after concrete setting, take away template, just at shield tunnel hole, forming one thickness is 600mm temporary plugging wall,
(2) when the temporary plugging wall in station agent structure and step (1) has been constructed and has reached design strength, just the H shaped steel in other SMW engineering method stake in the space enclosing structure of A being stood except the pile body of portal position is directly extracted, then for the SMW engineering method stake of portal position, carry out specially treated, specifically in each pile body upper surface, along the wall of the H shaped steel transverse plate both sides in this pile body, to pile body bottom hole, form a upper and lower unobstructed cement injection and draw hole, and guarantee that two cement injections on each pile body draw hole after extracting this H shaped steel, the jack forming at pile body after inserting pile body with this H shaped steel is communicated with, then at each cement injection, draw in hole and insert for injecting the igelite sleeve valve pipe of cement grout,
(3) after treating that step (2) completes, just start to pull up the H shaped steel in the SMW engineering method stake of corresponding shield tunnel hole part, in pulling up process, use by the H shaped steel of every SMW engineering method stake sleeve valve pipe grouting process to draw hole to simultaneous implantation cement grout in H shaped steel jack in this pile body by the middle cement injection having bored of step (2) simultaneously, not only block seepage water passage in space enclosing structure body of wall, and the material of igelite sleeve valve pipe 8 does not affect shield machine turnover hole cutter head of shield machine rotation excavation operation, its three sleeves valve pipe can repeat slip casting, slip casting is protected after completing, later stage can be supplemented slip casting, when the H shaped steel in pile body is extracted completely, in its H shaped steel jack, fill with cement grout simultaneously, after cement grout is solid, just form one with the stake of SMW engineering method, after H shaped steel in each pile body is extracted, in the H shaped steel jack in each pile body, fill with cement grout simultaneously, after cement grout is solid, has been convenient to pile body and forms envelope wall one, can play the effect of waterproofing reinforcement,
(4) after step (3) completes, shield machine arrived end well before 2 months, adopt triple-pipe high pressure jet grouting stake to carry out consolidation process to the 400mm gap between end well space enclosing structure 2 and cement mixing method reinforcing body 4, in gap, form triple-pipe high pressure jet grouting stake interlock body of wall.
After construction completes and after the cement grout injecting reaches design strength, from temporary plugging wall, piercing 10 diameters is 2-3cm level detection hole, ten exploration holes are uniformly distributed, and each exploration hole is drilled into the position of shield end reinforcing body, through long-time, observe, do not find infiltration phenomenon, illustrate that the structure percolation-proof effect in embodiment is good, and in construction, extracted in advance H shaped steel in the pile body of the corresponding shield structure of SMW engineering method stake hole part, shortened the lease time of this position H shaped steel, construction cost can be controlled in 60,000 yuan, not only cost-saving, and improve shield machine turnover hole safety factor.
The utility model geological condition is with strong points, construction technology is simple, low in the pollution of the environment, reduced the security risk in shield machine turnover hole, shorten SMW engineering method stake H shaped steel leasing period, save construction cost, realize the doulbe-sides' victory of economy, environmental benefit.
Claims (4)
1. a SMW engineering method stake tunnel shielding portal seepage-proof structure, the SMW engineering method stake space enclosing structure (2) that comprises shield end well, outside in the corresponding shield tunnel of SMW engineering method stake space enclosing structure (2) hole part is provided with shield end ruggedized construction (4), it is characterized in that: this seepage-proof structure also comprises the temporary plugging wall (7) that is arranged on place, shield tunnel hole, and described temporary plugging wall (7) is comprised of the concrete dense sealing (7-2) that is fixed on the reinforced mesh (7-1) at hole and be cast on reinforced mesh; Mode by synchronous grout injection in the H shaped steel of the corresponding shield tunnel of SMW engineering method stake space enclosing structure (2) hole part pulls up process forms the cement packed layer (9) identical with H beam steel shape in H shaped steel jack (12).
2. a kind of SMW engineering method stake tunnel shielding portal seepage-proof structure according to claim 1, is characterized in that: the mode by triple-pipe high pressure jet grouting in the gap between SMW engineering method stake space enclosing structure (2) and shield end ruggedized construction (4) forms triple-pipe high pressure jet grouting stake interlock body of wall (5).
3. a kind of SMW engineering method stake tunnel shielding portal seepage-proof structure according to claim 1 and 2, it is characterized in that: the thick 600-800mm of described temporary plugging wall (7), be provided with two-layer reinforced mesh, the edge of two-layer reinforced mesh is all welded in the portal steel loop (8) at shield tunnel hole.
4. a kind of SMW engineering method stake tunnel shielding portal seepage-proof structure according to claim 1 and 2, is characterized in that: described shield end ruggedized construction (4) is triaxial cement mixing pile reinforcing body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420202139.XU CN203796288U (en) | 2014-04-24 | 2014-04-24 | Water seepage prevention structure used for shield entrance door employing SMW piles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420202139.XU CN203796288U (en) | 2014-04-24 | 2014-04-24 | Water seepage prevention structure used for shield entrance door employing SMW piles |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924987A (en) * | 2014-04-24 | 2014-07-16 | 中铁十一局集团城市轨道工程有限公司 | SMW pile shielding portal waterproof structure and construction method thereof |
| CN105386770A (en) * | 2015-11-26 | 2016-03-09 | 中国建筑第六工程局有限公司 | Backfill crossing method for shield tunneling machine passing through middle air shaft |
| CN109681211A (en) * | 2018-12-12 | 2019-04-26 | 中国人民解放军63926部队 | Exempt from explosion tunnel portal construction method |
| CN111365032A (en) * | 2020-04-15 | 2020-07-03 | 中铁十一局集团城市轨道工程有限公司 | Anti-seepage treatment method for ring beam of tunnel door of subway station |
| CN113847039A (en) * | 2021-09-30 | 2021-12-28 | 中交(天津)轨道交通工程建设有限公司 | A construction method for breaking the SMW construction method pile hole door in pipe jacking construction |
-
2014
- 2014-04-24 CN CN201420202139.XU patent/CN203796288U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924987A (en) * | 2014-04-24 | 2014-07-16 | 中铁十一局集团城市轨道工程有限公司 | SMW pile shielding portal waterproof structure and construction method thereof |
| CN103924987B (en) * | 2014-04-24 | 2015-12-09 | 中铁十一局集团城市轨道工程有限公司 | A kind of anti-seepage structure and construction method of SMW pile shield tunnel door |
| CN105386770A (en) * | 2015-11-26 | 2016-03-09 | 中国建筑第六工程局有限公司 | Backfill crossing method for shield tunneling machine passing through middle air shaft |
| CN109681211A (en) * | 2018-12-12 | 2019-04-26 | 中国人民解放军63926部队 | Exempt from explosion tunnel portal construction method |
| CN109681211B (en) * | 2018-12-12 | 2020-05-08 | 中国人民解放军63926部队 | Blasting-free tunnel portal construction method |
| CN111365032A (en) * | 2020-04-15 | 2020-07-03 | 中铁十一局集团城市轨道工程有限公司 | Anti-seepage treatment method for ring beam of tunnel door of subway station |
| CN111365032B (en) * | 2020-04-15 | 2021-06-29 | 中铁十一局集团城市轨道工程有限公司 | Anti-seepage treatment method for ring beam of tunnel door of subway station |
| CN113847039A (en) * | 2021-09-30 | 2021-12-28 | 中交(天津)轨道交通工程建设有限公司 | A construction method for breaking the SMW construction method pile hole door in pipe jacking construction |
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