CN101603427B - Shield synchronization slip casting construction technology - Google Patents

Shield synchronization slip casting construction technology Download PDF

Info

Publication number
CN101603427B
CN101603427B CN200910054672XA CN200910054672A CN101603427B CN 101603427 B CN101603427 B CN 101603427B CN 200910054672X A CN200910054672X A CN 200910054672XA CN 200910054672 A CN200910054672 A CN 200910054672A CN 101603427 B CN101603427 B CN 101603427B
Authority
CN
China
Prior art keywords
slip casting
shield
slurries
grouting
construction technology
Prior art date
Application number
CN200910054672XA
Other languages
Chinese (zh)
Other versions
CN101603427A (en
Inventor
黄�俊
黄均龙
张若霖
张冠军
廖雄华
何自强
巴雅吉呼
孙卫国
Original Assignee
上海隧道工程股份有限公司
上海申通轨道交通研究咨询有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 上海隧道工程股份有限公司, 上海申通轨道交通研究咨询有限公司 filed Critical 上海隧道工程股份有限公司
Priority to CN200910054672XA priority Critical patent/CN101603427B/en
Publication of CN101603427A publication Critical patent/CN101603427A/en
Application granted granted Critical
Publication of CN101603427B publication Critical patent/CN101603427B/en

Links

Abstract

The present invention discloses a shield synchronization slip casting construction technology, comprising the following steps: A) stirring the slip casting material into single grout via a grout mix and feeding system of a mixing station; B) conveying the mixed single grout to shield grout groove through a transportation system; and C) conducting synchronous slip casting to tail skin building interspaces through a shield slip casting system; wherein, in step A), the initial slump is 9-14cm, the sand factor is 50-60%, the specific gravity is not less than 1.9kg/L, the bleeding rate is not more than 5%,the anti-cutting yield strength 8h is more than or equal to 800Pa and the later-stage solid shrinkage is not more than 1%; in step C), the slip casting pressure P=P1+P2, wherein, P1 is a water-soil pressure value around the slip casting point and P2 is pressure loss of the slip casting pipe. The grout in the invention has the advantages of higher anti-cutting yield strength, long service time, no occurrence of eduction and pipe blocking and good peaceability and the like. The shield synchronization slip casting construction technology provided by the present invention further has the advantages of low production cost of grout, low slip casting rate, low slip casting volume, no need of secondary supplement slip casting, controllable distortion and settlement of completed ground surface and high quality of tunnel circular forming.

Description

Shield synchronization slip casting construction technology
Technical field
The invention belongs to the constructing tunnel field, refer to a kind of shield synchronization slip casting construction technology especially.
Background technology
(in the tunneling construction process of shield structure diameter 6~6.5m), synchronous grouting is building gap between the filling soil body and section of jurisdiction annulus and the main means that reduce the later stage distortion, also is one important procedure in the shield structure propelling construction to adopt shield method to carry out subway tunnel.Require in the shield structure propelling construction slip casting should be in time, evenly, the pressure injection of capacity, guarantee that its structure void obtains in time and the filling of capacity, and make surface deformable and section of jurisdiction side-play amount be reduced to minimum thus.
For satisfying above requirement, in the shield construction of present subway tunnel, generally adopt three kinds of different synchronization slip casting construction technologies: the single liquid slurry of inertia, hardening capacity cement list liquid slurry and cement paste-water glass biliquid slurry.The construction of the single liquid slurry of inertia adopts that consistometric value is higher, workability preferably slurries carry out pressure injection, therefore better to the filling effect of structure void, the instant sedimentation in ground in the time of simultaneously under the situation that guarantees grouting pressure, also controlling the shield structure preferably and deviate from the shield tail, but inert slurry is not because slurries self have solid body intensity, the slip casting rate is bigger, tunnel later stage distortion after building up is bigger with sedimentation, for example, adopt its long-term settlement value maximum of tunnel of inert slurry construction can reach 13cm according to monitoring and statistics to the Shanghai Underground Line 1 after building up.Though hardening capacity cement list liquid slurry can make the slurries around the section of jurisdiction form higher fine and close solid body, but it is short to exist the slurries up time in the practice of construction process, the slurries plugging of easily emanating, it is not convenient to construct, shortcomings such as the thin slip casting rate of slurries is bigger are mainly used wider in the good ground consisting of hard rock of independence.The two fluid grouting method that adopts cement paste to mix with water glass, have short, the solid body intensity of slurries height slurries time of setting, certain antiseepage, impervious effect are arranged, the initial stage sedimentation and the stability in tunnel can have been controlled preferably, but domesticly have a following deficiency when using the dual-fluid synchronous slip casting construction: 1. easily stop up, operation control requires high; 2. grouting amount is 180~250% of theoretical value approximately, and grouting cost is higher; 3. inject the slurries ground settlement that easily causes not in place, will adopt secondary after-teeming slurry usually.
Chinese patent application CN200610147635.X discloses a kind of super big diameter mud water balance simultaneous grouting slurry for tunnel shield construction, these slurries have than great, sand factor is high, shearing resistance yield strength height, the little advantage of solid body shrinkage factor of later stage, in the construction in super-large diameter tunnel, improvement in conjunction with shield-tunneling construction equipment and technology, play good construction effect, can control the distortion of surrounding soil and stablizing of tunnel effectively.But in the Metro Tunnel construction, be subjected to site condition and shield-tunneling construction spatial constraints, problems have appearred in this simultaneous grouting slurry in application process, the corresponding synchronous grouting construction process can't be realized, ground slurry equipment scarce capacity for example, reinforced inaccuracy in the slurry preparation process, labour intensity height, slurries quality control difficulty, workability is poor, and efficient is low in the course of conveying, easily stops up, plugging is frequent in the shield grouting process, slip casting efficient deficiency etc.
Summary of the invention
The present invention is directed to and the similar single slurries of the disclosed super big diameter mud water balance simultaneous grouting slurry for tunnel shield construction of Chinese patent application CN200610147635.X, provide a kind of should the synchronization slip casting construction technology of list slurry applications in constructing metro tunnel, advance the shield tail structure void that produces to fill up the shield structure, thereby reach control because the space produces the surrounding soil cause is out of shape, controlling ground settlement purpose such as in code requirement.
Shield synchronization slip casting construction technology of the present invention, it in turn includes the following steps:
A) injecting paste material is mixed made single slurries by stirring feeding system at agitator;
B) the single slurries that finish by transportation system's system of will mixing are delivered in the shield structure slurry storage tank;
C) the shield grouting system carries out synchronous grouting to shield tail structure void;
Wherein, steps A) the initial slump of single slurries is 9-14cm in, and sand factor is 50-60%, proportion 〉=1.9kg/L, bleeding rate≤5%, anti-shearing yield strength 8h 〉=800pa, solid body shrinkage factor of later stage≤1%; Step C) grouting pressure P=P in 1+ P 2, P wherein 1Be this slip casting point outside water and soil force value, P 2Be the Grouting Pipe pressure loss, its steps A) in single slurries comprise: the hydrated lime of the sand of 50-60%, the flyash of 15-20%, 4-5%, the water of the swell soil of 2.5-3%, the additive of 0.15-0.25% and 15-25% preferred 20%.According to equipment situation in the shield structure, the pumping test by slurries before starting draws, and general grouting pressure is 0.3-1MPa, and grouting amount is 150% of a theoretical value, can adopt 4 slip castings simultaneously of shield tail, grouting amount top and the bottom ratio 6: 4.
Steps A) injecting paste material is mixed being made single slurries by stirring feeding system at agitator, is to concentrate to stir to produce, and concrete technology is as follows:
Mixing the slurry feeding system is by storage bin, water source, weighing device, pay-off and 3m 3Forced action type mortar mixer 5 parts are formed, after obtaining the instruction of command and control system, weigh respectively by charging sequence, be delivered to mixer then and mix system, mixing time is 2~3 minutes, and charging sequence is to add swell soil, flyash, hydrated lime, 2/3 water, sand, additive, 1/3 water under the stirring successively, after the system of mixing is finished, single slurries are put into the olive car, carry out the system of mixing of next injecting paste material then.
The performance requirement of the sand in the injecting paste material, flyash, lime, swell soil and additive is as shown in table 1.
The performance requirement of table 1 injecting paste material
Size performance control index is as shown in table 2.
Table 2 size performance control index
Preferably, the initial slump of single slurries is at 9~12cm, bleeding rate≤3%, anti-shearing yield strength 8h 〉=1000Pa.
Step B) the single slurries that finish by transportation system's system of will mixing are delivered in the shield structure slurry storage tank, and transportation system comprises olive car, on-the-spot slurries receiving system, interim slurry storage tank, down-hole fortune slurry car, and concrete technology is as follows:
Single slurries are sent in the olive car, put into interim slurry storage tank after the vibrations of ground slurries receiving system, filtration, and the grouting amount situation that the volume of interim slurry storage tank is looked the every ring of shield driving should be at least greater than 6m 3, and keep evenly stirring continuously; In a construction period, (advance a ring), travel to assigned address in the down-hole by fortune slurry car, after simultaneously the slurry storage tank administrative staff being sent instruction, single slurries that the slurry storage tank administrative staff will store are opened under stirring and are sent slurry valve to be delivered in the fortune slurry car of down-hole, when fortune slurry car is transported in the tunnel shield structure slurry storage tank position with slurries, open the agitating function of fortune slurry car, to slurries uniformity, workability up to standard after, screw pump by fortune slurry car bottom is delivered in the shield structure slurry storage tank again, carries out the pumping construction operation of slurries.The slurries transport courses is as follows:
Step C) the shield grouting system carries out synchronous grouting to shield tail structure void, carries out when advancing, and concrete technology is as follows:
Filling system is by high-performance grouting pump (Chinese patent application CN200910045387.1 shield tunneling synchronous mud injecting pump, or ksp12-2D grouting pump (business men: German Shi Weiying)) (grouting pump maximum pressure 6MPa, maximum stream flow 2 * 100L/min), hydraulic power station and flow, pressure sensor device is formed, after obtaining the control system of grouting instruction, single slurries that induction system is sent here by setting pressure (on, lower limit), flow is pressed in the injected hole of specifying the orientation, and determine actual grouting amount by metering device, parameter adjustment grouting pressure by the electrical system feedback, flow, until finishing slip casting, finish the pumping of 4 slip casting points simultaneously by a pump, treat that a construction period finishes back (advancing a ring), carries out the work of next construction period.
Shield synchronization slip casting construction technology of the present invention also can comprise step D) the effect detection system monitors and effect detection slip casting, technology is specific as follows: form by monitor and detect two parts in the thing afterwards, wherein, monitoring comprises contents such as slurry consistency, the slump, proportion, bleeding rate and/or anti-shearing yield strengths in the thing, and monitoring is to carry out in the slip casting process in the thing; Detect afterwards and comprise contents such as slurries later strength, solid body shrinkage factor of slurries later stage and/or ground settlement monitoring, detect is to finish in slip casting to carry out after finishing with construction period afterwards.
Another object of the present invention is to provide a kind of single slurries that are adapted to the metro shield synchronous grouting, it comprises: 50~60% sand, 15~20% flyash, 4~5% hydrated lime, 2.5 the water of~3% swell soil, 0.15~0.25% additive and 15~25%, preferred 20%.Wherein, described additive is a LC-H type polycarboxylate efficient mortar water reducing agent, and water-reducing rate reaches 20%.
In the shield synchronization slip casting construction technology of the present invention, slurries have higher anti-shearing yield strength, and the up time is long, and workability is good, are difficult for advantages such as segregation plugging; Slurries by the optimization of equipment, technology, have guaranteed the workability and the quality of slurries in the system of mixing, transportation; In the slip casting process, slurries have reached good compliance and mortar depositing construction effect; The effect detection system detects and estimates the construction of slurries, thereby instructs next step synchronous grouting construction, and technology is continued to optimize.The slurries cost of production is low in the technology of the present invention, and the slip casting rate is little, and grouting amount is low, does not need secondary supplement slip casting, and surface deformable and sedimentation after the construction are easy to control.
The specific embodiment
With subway tunnel shield-tunneling construction synchronous grouting technology is example, and this tunnel adopts 2 earth pressure balanced shield, EPBSs to carry out tunneling construction, shield structure diameter 6340mm, and prefabricated reinforced concrete section of jurisdiction, lining cutting external diameter 6200mm, internal diameter 5500mm are adopted in lining cutting.More than the edpth of tunnel 14m, the excavation soil layer is mainly based on saturated cohesive soil.
Single slurries of present embodiment comprise 55% sand, 18% flyash, 4.5% hydrated lime, 2.8% sodium bentonite, 0.2% polycarboxylate efficient mortar water reducing agent and 19.5% water, and the performance requirement of each injecting paste material is as shown in table 1.
Steps A) after the instruction of mixing the controlled system of slurry feeding system in the agitator, take by weighing swell soil, flyash, hydrated lime, 2/3 water, sand, additive, 1/3 water successively according to aforementioned proportion, in the forced action type mortar mixer, mix system, mixing time is 2~3 minutes, after the system of mixing is finished, single slurries are put into the olive car.
Step B) after the olive car is reached the spot, single slurries are through the vibrations of receiving system, the interim slurry storage tank of active well intermediate interlayer is put in filtration, treat that down-hole fortune slurry car travels to assigned address in the down-hole, after simultaneously slurry storage tank pipeline personnel being sent instruction, the slurry storage tank administrative staff put into down-hole fortune slurry car by valve with the slurries in the interim slurry storage tank under stirring, when fortune slurry car is transported in the tunnel shield structure slurry storage tank position with slurries, open the agitating function of fortune slurry car, be delivered to again in the shield structure slurry storage tank by fortune slurry car bottom screw pump, carry out the pumping construction operation of slurries.Down-hole fortune slurry car carries agitating function, the tunnel delivery track can't use or the tunnel in can't stir at well head under the situation of normal construction, prevent the segregation precipitation of slurries, guarantee the workability of slurries.Induction system advances circuit to carry out the supply of slurries by threeway to difference, satisfies the slurries supply requirement of two or many tunnel propelling circuits simultaneously.
Step C) after the controlled system command of shield grouting system, single slurries that induction system is sent here are under the setting grouting pressure of 0.3~1MPa, according to shield driving speed, be pressed in the injected hole of specifying the orientation according to flow 40~100L/min, adopt 4 slip castings simultaneously of shield tail, grouting amount top and the bottom ratio 6: 4, injection rate 130%~160%, and determine actual grouting amount by metering device, parameter adjustment flow by the electrical system feedback, grouting pressure is controlled in the 1Mpa, until finishing slip casting, a mortar depositing construction cycle once finishes, and carries out the work of next construction period.
Step D) effect detection: in the slip casting process, carry out in the thing contents such as denseness, the slump, proportion, bleeding rate, anti-shearing yield strength of monitoring slurries; Finish ground settlement monitoring after finishing laggard behaviour with construction period in slip casting.
Various detection effect datas are as shown in table 3.
Table 3 detects effect data
Conclusion: after using shield synchronization slip casting construction technology of the present invention and slurries, various effect datas all adhere to specification and technical standard, and technology and slurries tool were greatly improved more in the past.

Claims (9)

1. shield synchronization slip casting construction technology, it in turn includes the following steps:
A) mixing the slurry feeding system at agitator mixes injecting paste material and makes single slurries;
B) the single slurries that finish by transportation system's system of will mixing are delivered in the shield structure slurry storage tank;
C) the shield grouting system carries out synchronous grouting to shield tail structure void;
Steps A) the initial slump of single slurries is 9~14cm in, and sand factor is 50~60%, proportion 〉=1.9kg/L, bleeding rate≤5%, anti-shearing yield strength 8h 〉=800pa, solid body shrinkage factor of later stage≤1%; Step C) grouting pressure P=P in 1+ P 2, P wherein 1Be this slip casting point outside water and soil force value, P 2For the Grouting Pipe pressure loss, it is characterized in that steps A) in single slurries comprise: 50~60% sand, 15~20% flyash, 4~5% hydrated lime, 2.5~3% swell soil, 0.15~0.25% additive and 15~25% water.
2. shield synchronization slip casting construction technology as claimed in claim 1 is characterized in that steps A) in the initial slump of single slurries at 9~12cm, bleeding rate≤3%, anti-shearing yield strength 8h 〉=1000Pa; Step C) grouting pressure is 0.3~1MPa in, and grouting amount is 150% of a theoretical value.
3. shield synchronization slip casting construction technology as claimed in claim 1 is characterized in that, also comprises step D) the effect detection system monitors and effect detection slip casting.
4. shield synchronization slip casting construction technology as claimed in claim 3 is characterized in that, monitoring and effect detection comprise monitoring and detection afterwards in the thing, and monitoring comprises slurry consistency, the slump, proportion, bleeding rate and/or anti-shearing yield strength in the thing; Detect afterwards and comprise slurries later strength, solid body shrinkage factor of slurries later stage and/or ground settlement monitoring.
5. shield synchronization slip casting construction technology as claimed in claim 1 is characterized in that step C) in, 4 slip castings simultaneously of shield tail adopted, grouting amount top and the bottom ratio 6: 4.
6. shield synchronization slip casting construction technology as claimed in claim 1 is characterized in that steps A) in, injecting paste material is delivered to mixer and mixes system after weighing, and mixing time is 2~3 minutes; Wherein, charging sequence is the water of the water that adds swell soil, flyash, hydrated lime, 2/3 consumption under the stirring successively, sand, additive, 1/3 consumption.
7. shield synchronization slip casting construction technology as claimed in claim 1, it is characterized in that, step C) in, single slurries that induction system is sent here are pressed in the injected hole of specifying the orientation by setting pressure, flow, and determine actual grouting amount by metering device, by parameter adjustment grouting pressure, the flow of electrical system feedback, until finishing slip casting, after treating that a construction period finishes, carry out the construction of next circulation.
8. synchronous grouting list slurries, it comprises: 50~60% sand, 15~20% flyash, 4~5% hydrated lime, 2.5~3% swell soil, 0.15~0.25% additive and 15~25% water.
9. synchronous grouting list slurries as claimed in claim 8 is characterized in that, described additive is a polycarboxylate mortar water reducing agent.
CN200910054672XA 2009-07-10 2009-07-10 Shield synchronization slip casting construction technology CN101603427B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910054672XA CN101603427B (en) 2009-07-10 2009-07-10 Shield synchronization slip casting construction technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910054672XA CN101603427B (en) 2009-07-10 2009-07-10 Shield synchronization slip casting construction technology

Publications (2)

Publication Number Publication Date
CN101603427A CN101603427A (en) 2009-12-16
CN101603427B true CN101603427B (en) 2011-12-07

Family

ID=41469316

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910054672XA CN101603427B (en) 2009-07-10 2009-07-10 Shield synchronization slip casting construction technology

Country Status (1)

Country Link
CN (1) CN101603427B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102199028B (en) * 2010-10-15 2013-06-05 河南理工大学 Rapid hardening early strength grouting material prepared with flue gas desulfurized gypsum and preparation method thereof
CN101982747B (en) * 2010-11-05 2012-06-13 上海隧道工程股份有限公司 Method for calibrating synchronous grouting quantity and grouting pressure of shield
CN102518009B (en) * 2011-11-11 2013-10-30 中联重科股份有限公司 Pouring engineering method for self-leveling concrete type filling mortar of track slab
CN102758641B (en) * 2012-08-01 2014-08-20 上海城建(集团)公司 Construction method for ultralarge-diameter shield synchronous grouting
CN103174439B (en) * 2013-04-11 2016-03-09 上海隧道工程有限公司 The construction method of shield tunnel retardation setting type synchronous grouting
CN103613356B (en) * 2013-11-22 2016-01-20 哈尔滨工业大学 Be applicable to the geopolymer grouting material that cold district uses
CN103775096B (en) * 2014-02-19 2016-09-07 粤水电轨道交通建设有限公司 A kind of shield launching method of soft layer
CN106089213B (en) * 2016-05-06 2018-05-08 同济大学 Shield tunnel simultaneous grouting slurry measured performance parameter system and method
CN106437729A (en) * 2016-08-08 2017-02-22 中国矿业大学(北京) Additive for decreasing shrinkage rate of synchronous grouting materials
CN107120121B (en) * 2017-05-31 2019-10-25 中建三局基础设施工程有限公司 A kind of shield-tunneling construction supplements slip casting anti-settling control method in real time
CN107902994B (en) * 2017-11-28 2020-10-30 河海大学 Early-strength shield wall-grouting material
CN109681236A (en) * 2018-12-20 2019-04-26 中铁二十三局集团有限公司 Big cross section water-rich sand layer shield driving synchronous grouting method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191570A2 (en) * 1985-01-29 1986-08-20 Alethea Rosalind Melanie Hall Support member
CN1418841A (en) * 2002-12-26 2003-05-21 北京城建集团有限责任公司 Post slip-casting inert slurry for tunnel wall of shield method
KR20040009165A (en) * 2002-07-22 2004-01-31 한국건설기술연구원 Foaming agent powder for air-entertained concrete and methods of manufacturing it and air-entrained concrete using therewith
CN1644556A (en) * 2004-12-29 2005-07-27 上海隧道工程股份有限公司 Solidable grouting liquid for synchronous grouting of subway shielded construction
CN1994953A (en) * 2006-12-21 2007-07-11 上海隧道工程股份有限公司 Super big diameter mud water balance simultaneous grouting slurry for tunnel shield construction
CN101012752A (en) * 2007-02-08 2007-08-08 上海隧道工程股份有限公司 Construction method for single casting of shield with super large diameter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191570A2 (en) * 1985-01-29 1986-08-20 Alethea Rosalind Melanie Hall Support member
KR20040009165A (en) * 2002-07-22 2004-01-31 한국건설기술연구원 Foaming agent powder for air-entertained concrete and methods of manufacturing it and air-entrained concrete using therewith
CN1418841A (en) * 2002-12-26 2003-05-21 北京城建集团有限责任公司 Post slip-casting inert slurry for tunnel wall of shield method
CN1644556A (en) * 2004-12-29 2005-07-27 上海隧道工程股份有限公司 Solidable grouting liquid for synchronous grouting of subway shielded construction
CN1994953A (en) * 2006-12-21 2007-07-11 上海隧道工程股份有限公司 Super big diameter mud water balance simultaneous grouting slurry for tunnel shield construction
CN101012752A (en) * 2007-02-08 2007-08-08 上海隧道工程股份有限公司 Construction method for single casting of shield with super large diameter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
赵天石.泥水盾构同步注浆浆液试验及应用技术研究.《同济大学工学硕士论文》.2008,第89页. *

Also Published As

Publication number Publication date
CN101603427A (en) 2009-12-16

Similar Documents

Publication Publication Date Title
JP5270819B2 (en) Ground strengthening method
CN100591866C (en) Drifting sand layer and gravel stratum water-moving double-liquid high pressure slip-casting water-blocking construction method
CN102094650B (en) Construction method for shield entry under complicated working conditions
CN104265321B (en) Ultra-large type tunneling boring rectangular top pipe tunneling construction method
CN102720508B (en) Shield construction method for continuously under-passing dense buildings in silty-soil and silty-sand formation
CN102121395B (en) Method for integrated comprehensive management of gas in low-permeability single coal bed
CN102146679B (en) Construction method for complex geological section earth pressure balance shield passing middle air shaft
CN105041325A (en) Construction method of high-tension water-rich extra-large-section weak breccia tunnel
CN105201513A (en) Shaft construction method for rail transit
CN101654356B (en) Shield method tunnel synchronous grouting slurry applied to compound stratum with upper soft part and lower hard part
CN105952475B (en) A kind of residual exploiting field inbreak abandoned working grouting and reinforcing technology of coal mine and method
CN101749026B (en) Grid reinforcing method of shield receiving or starting end head and shield receiving method
CN101666234B (en) Fracture rock no-slurry-blocking wall compound grouting construction method
CN102705005B (en) Technology for plugging water bursting in mine by directional diversion grouting
CN107288657A (en) The weak cementing rock mass seepage failure area slip casting integrated control method of top of underground
CN102425427B (en) Method for constructing tunnel by utilizing shield empty-pushing crossing mine method
CN105736004A (en) Balanced shield mud air-pressure cabin opening pressure maintaining and wall protecting construction method for shield tunneling
CN102561372B (en) Plugging method for downcomer for well-point dewatering of deep foundation pit
CN104929114A (en) High pressure jet grouting pile waterproof curtain construction device and method
CN105240047A (en) Filling reinforcement method for managing underground mined area of open-pit mine
CN102757206A (en) Mine fracture grouting material and usage method thereof
CN102061938A (en) Filling process for recovering coal pillars by filling goaf with paste
CN103214217B (en) Composite superfine cement grout slurry and preparation method thereof
CN102767377A (en) Loess strata subway tunnel earth pressure balance shield construction method
CN104453946B (en) Advanced reinforcing construction method for building tunnel in soft surrounding rock

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
ASS Succession or assignment of patent right

Owner name: SHANGHAI TUNNEL ENGINEERING CO., LTD.

Free format text: FORMER OWNER: SHANGHAI TUNNEL ENGINEERING CO LTD

Effective date: 20150130

TR01 Transfer of patent right

Effective date of registration: 20150130

Address after: 200232 Shanghai Wanping Road No. 1099

Patentee after: SHANGHAI TUNNEL ENGINEERING CO., LTD.

Patentee after: Shanghai Shentong Rail Transit Research & Consulting Co., Ltd.

Address before: 200082 No. 118, Dalian Road, Shanghai

Patentee before: Shanghai Tunnel Engineering Co., Ltd.

Patentee before: Shanghai Shentong Rail Transit Research & Consulting Co., Ltd.

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 200082 HONGKOU, SHANGHAI TO: 200232 XUHUI, SHANGHAI