CN101654356A - Shield method tunnel synchronous grouting slurry applied to compound stratum with upper soft part and lower hard part - Google Patents
Shield method tunnel synchronous grouting slurry applied to compound stratum with upper soft part and lower hard part Download PDFInfo
- Publication number
- CN101654356A CN101654356A CN200910306484A CN200910306484A CN101654356A CN 101654356 A CN101654356 A CN 101654356A CN 200910306484 A CN200910306484 A CN 200910306484A CN 200910306484 A CN200910306484 A CN 200910306484A CN 101654356 A CN101654356 A CN 101654356A
- Authority
- CN
- China
- Prior art keywords
- mortar
- cement
- grouting slurry
- slurry
- shield method
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses shield method tunnel synchronous grouting slurry which belongs to the technical field of shield tunnel engineering. The shield method tunnel synchronous grouting slurry consists of mortar and water glass, wherein the weight ratio of the mortar to the water glass is 1:4, and the weigh ratio of various raw materials in the mortar of cement to sand to fly ash to swell soil towater is 1:4.8-5.71:2.93-3.31:0.25-0.27:3.13-3.30. The shield method tunnel synchronous grouting slurry has good consistency and insusceptible separation, can effectively prevent the phenomena of slurry separation and grouting pipe blockage, can timely and effectively fill a building gap between a digging surface and the periphery of a pipe piece and control the ground surface settlement within 5to 7mm.
Description
Technical field
The invention discloses a kind of shield tunnel simultaneous grouting slurry, particularly a kind of shield tunnel simultaneous grouting slurry that is applicable to soft following hard compound stratum belongs to the shield tunnel project technical field.
Background technology
Along with developing rapidly of urban track traffic field, driven the application of metro shield worker law technology.Because the excavation of shield engine driving can produce disturbance to the stratum inevitably; Simultaneously owing to have structure void between excavation face and lining segment, make the face of land along the line, tunnel produce certain sedimentation, especially for last soft hard compound stratum down, the sedimentation and deformation on the face of land is difficult to control more, if do not adopt an effective measure ground settlement is not controlled, in case take place to show sedimentation significantly, will produce very big risk.Therefore, in the shield engine driving, adopt synchronous grouting control ground settlement very important in allowed band.
At present, used simultaneous grouting slurry is divided into single slurries and two kinds in two slurries in the subterranean tunnel shielded construction.Single slurries mainly are made up of cement, flyash, sand, water etc.Two slurries are made up of A liquid and B liquid, and the mortar that A liquid is made up of cement, wilkinite, stability material and water, B liquid are water glass.Because single slurries easy construction, management are easily, thereby existing shield tunnel simultaneous grouting slurry adopts single slurries more and seldom adopts two slurries.
The typical weight proportion of each raw material is a cement in existing single slurries: flyash: sand: water=1: 3.6: 2: 0.2: 2.43, these list slurries are longer time of coagulation, can not fixed timely and effectively section of jurisdiction, fill structure void, after the shield tail is hauled out in the section of jurisdiction, can not effectively control ground settlement, ground settlement is at 10～15mm, and cement and bentonite content are higher, and cost is higher.
The typical percentage volume of each raw material is in existing two slurries: cement 21.23%, wilkinite 2.5%, stability material 0.34%, water 67.73%, water glass 8.2%.Though this pair slurries early strength is higher, the flowability better, but in construction process, be easy to generate slurries segregation, plugging phenomenon, directly influence coagulation result and the construction speed of slurries in the stratum, not only delayed the engineering time, also because of the discharging of discarded slurries, newly mixing etc. has increased construction cost.And this proportioning simultaneous grouting slurry is used for the soft shielded construction of hard compound stratum down, and the ground settlement scope is at 10～15mm, and ground settlement is bigger, admittedly be unsuitable for the soft shielded construction of hard compound stratum down.
Summary of the invention
The object of the present invention is to provide a kind of soft shield tunnel simultaneous grouting slurry of hard compound stratum down that is applicable to, to guarantee that the slurries presetting period adapts to shield driving construction and remote requirement of carrying, reduce plugging and slurries segregation, can fill structure void timely and effectively, reduce ground settlement.
In order to realize the foregoing invention purpose, the inventor provides following technical scheme through repetition test:
A kind of shield tunnel simultaneous grouting slurry that is applicable to soft following hard compound stratum, form by mortar and water glass, described mortar is made up of cement, sand, flyash, wilkinite and water, it is characterized in that: the weight ratio of described mortar and water glass is: water glass: mortar=1: 4, the weight ratio of each raw material is in the described mortar: cement: sand: flyash: wilkinite: water=1: 4.8～5.71: 2.93～3.31: 0.20～0.27: 3.13～3.30.Described slurry consistency is 120mm, can suitably adjust according to on-the-spot water-containing rate during actual the use.
Cement: sand: flyash: wilkinite: water=1: 4.8: 2.93: 0.25: 3.24.
Described cement can be ordinary Portland cement or composite Portland cement.
Shield tunnel simultaneous grouting slurry of the present invention is made up of mortar and water glass, with sand, flyash and cement is the slurry consolidation strength materials, cement also is hydraulic cementing materials simultaneously, in order to regulate slurries time of coagulation, wilkinite is in order to increase the cementability of slurries, slow down the separation of slurry material, water glass is the soluble alkali metal silicate that is formed by alkalimetal oxide and silica bound, and its main component is Na
2SiO
3,, work to regulate setting time as solidifying agent.
Compared with prior art, the present invention has following beneficial effect: the synchronous slurries of shield tunnel of the present invention, its proportioning determines that through repetition test is final slurry consistency is good, is difficult for segregation, can effectively prevent the phenomenon of slurries segregation, obstruction Grouting Pipe.Slurry fluidity is good, can fill the structure void of excavation face and periphery, section of jurisdiction timely and effectively, can solidify at short notice, early reaches original soil intensity, makes it play the control ground settlement, constraint section of jurisdiction displacement, the formation first road water-stop curtain.Adopt slurries of the present invention to be used for the soft construction of hard compound stratum down, ground settlement is controlled in 5～7mm.
Embodiment
The present invention is described in further detail below in conjunction with embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, allly all belong to scope of the present invention based on the technology that content of the present invention realized.The simultaneous grouting slurry that the following example is cited, form by mortar and water glass, wherein the part by weight of mortar and water glass is: water glass: mortar=1: 4, described mortar is made up of cement, sand, flyash, wilkinite and water, slurry consistency is 120mm, can suitably adjust according to on-the-spot water-containing rate during actual the use.
Embodiment 1
In the slurries that present embodiment is enumerated, the consumption of each raw material is (a unit: kg/m in the mortar
3) be: cement 150, sand 720, flyash 440, wilkinite 37, water 470.
The slurries of this proportioning are used for Guangzhou metro section constructing tunnel, this construction segment mileage scope left side line is ZDK22+392.964～ZDK22+856.392, left side line total length 474.928m, right line is YDK22+202.194～YDK22+856.392, length is 654.473m, two line length overall 1129.401m, distance between centers of tracks is 5.0～23.4m.This section geology is mainly silty clay stratum, plastic shape residual soil, little waste mantle.In shield driving; force feed effect by grouting pump; slurry filling is gone among the section of jurisdiction ring external series gap of shield tail; reach filling section of jurisdiction ring outer void, fixedly position, section of jurisdiction, minimizing land subsidence, serve as the purpose of encircling the outer first road water-proof wire; and guarantee the stability in early stage and later stage of pipe-plate lining; reduced the distortion on ground when the shield structure advances effectively, the ground settlement of this section constructing tunnel is controlled in the 5mm, has protected surrounding enviroment effectively.
Embodiment 2
In the slurries that present embodiment is enumerated, the consumption of each raw material is (a unit: kg/m in the mortar
3) be: cement 147, sand 840, flyash 486, wilkinite 40, water 486.
The slurries of this proportioning are used for Guangzhou metro section constructing tunnel, the right line YDK27+088.00～YDK28+169.127 of this construction segment mileage scope, long 1081.127m; Left side line ZDK27+088～ZDK28+169.936, long 1078.090m, two line length overall 2159.217m.When the shield structure tunneled in this interval, in no molten soil cave location, use this simultaneous grouting slurry proportioning, ground settlement all was controlled in the 7mm.
Claims (3)
1. one kind is applicable to the soft shield tunnel simultaneous grouting slurry of hard compound stratum down, form by mortar and water glass, described mortar is made up of cement, sand, flyash, wilkinite and water, it is characterized in that: the weight ratio of described mortar and water glass is: water glass: mortar=1: 4, the weight ratio of each raw material is in the described mortar: cement: sand: flyash: wilkinite: water=1: 4.8～5.71: 2.93～3.31: 0.20～0.27: 3.13～3.30.
2. the shield tunnel simultaneous grouting slurry that is applicable to soft following hard compound stratum according to claim 1, it is characterized in that: the weight ratio of each raw material is in the described mortar: cement: sand: flyash: wilkinite: water=1: 4.8: 2.93: 0.25: 3.24.
3. the shield tunnel simultaneous grouting slurry that is applicable to soft following hard compound stratum according to claim 1 and 2, it is characterized in that: described cement is ordinary Portland cement or composite Portland cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103064841A CN101654356B (en) | 2009-09-02 | 2009-09-02 | Shield method tunnel synchronous grouting slurry applied to compound stratum with upper soft part and lower hard part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103064841A CN101654356B (en) | 2009-09-02 | 2009-09-02 | Shield method tunnel synchronous grouting slurry applied to compound stratum with upper soft part and lower hard part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101654356A true CN101654356A (en) | 2010-02-24 |
| CN101654356B CN101654356B (en) | 2012-07-04 |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935198A (en) * | 2010-09-12 | 2011-01-05 | 上海市第二市政工程有限公司 | Environment-friendly shield construction single-liquid synchronous grouting slurry |
| CN102250597A (en) * | 2011-06-24 | 2011-11-23 | 中国石油天然气集团公司 | Grouting slurry for unconsolidated strata |
| CN102617108A (en) * | 2012-04-17 | 2012-08-01 | 中铁十二局集团第三工程有限公司 | High-performance grouting slurry for karst subgrade of high-speed railway |
| CN102718441A (en) * | 2012-04-28 | 2012-10-10 | 中铁二局股份有限公司 | Slurry used in shield construction synchronous grouting and method for preparing same |
| CN103397845A (en) * | 2013-07-24 | 2013-11-20 | 国家电网公司 | Method of controlling building settlement caused by penetration of jacked pipe through grout replacement |
| CN104074530A (en) * | 2014-06-17 | 2014-10-01 | 中铁十五局集团有限公司 | Shield synchronous grouting construction method and construction material |
| CN104775824A (en) * | 2015-04-30 | 2015-07-15 | 中铁工程装备集团有限公司 | Slurry shield main engine for upper-soft lower-hard ground |
| CN105019913A (en) * | 2015-08-03 | 2015-11-04 | 中铁六局集团有限公司 | Base rock uplift region shielding tool-changing in-situ reinforcement method |
| CN105130349A (en) * | 2015-07-15 | 2015-12-09 | 东南大学 | Foundation pit engineering waterproof curtain material based on industrial waste residue |
| CN105837118A (en) * | 2016-04-05 | 2016-08-10 | 中建三局集团有限公司 | Environmentally-friendly flexible self-healing waterproof curtain and production method thereof |
| CN107129221A (en) * | 2017-06-26 | 2017-09-05 | 中铁四局集团第工程有限公司 | A kind of slurries suitable for low strength stratum shield duct piece grouting behind shaft or drift lining |
| CN107459324A (en) * | 2017-08-11 | 2017-12-12 | 山东大学 | A kind of shield anti-stratum settlement housing packing material and preparation method thereof |
| CN107986711A (en) * | 2017-12-13 | 2018-05-04 | 中国水利水电第十工程局有限公司 | A kind of injection slurry applied to duct pieces of shield tunnel anti-floating and preparation method thereof |
| CN108442932A (en) * | 2018-02-27 | 2018-08-24 | 北京交通大学 | One kind being suitable for large diameter shield tunnel simultaneous grouting slurry |
| CN109534768A (en) * | 2018-11-29 | 2019-03-29 | 中铁隧道集团二处有限公司 | Inert slurry for Seepage water between concrete tube coupling |
| CN109626941A (en) * | 2018-11-29 | 2019-04-16 | 中铁隧道集团二处有限公司 | Inert slurry for Seepage water between concrete tube coupling |
| CN109626942A (en) * | 2018-12-14 | 2019-04-16 | 沈阳建筑大学 | The magnetorheological intelligent shield grouting material of one kind, preparation method and applications |
| CN109809771A (en) * | 2019-03-26 | 2019-05-28 | 江苏蓝圈新材料股份有限公司 | A kind of shield synchronization slip casting |
| CN110818334A (en) * | 2019-12-10 | 2020-02-21 | 中铁十四局集团隧道工程有限公司 | Slurry for shield grouting and preparation method thereof |
| CN110985001A (en) * | 2019-11-05 | 2020-04-10 | 渝黔铁路有限责任公司 | Advanced curtain grouting construction method suitable for high-pressure water-rich karst tunnel |
| CN111170711A (en) * | 2020-01-07 | 2020-05-19 | 河海大学 | Set-time-controllable grouting slurry for wall back grouting, grouting process and grouting device |
| CN111393128A (en) * | 2020-04-02 | 2020-07-10 | 上海隧道工程有限公司 | Double-liquid type shield synchronous grouting liquid and preparation method thereof |
| CN112727503A (en) * | 2021-02-02 | 2021-04-30 | 中建八局轨道交通建设有限公司 | Shield construction slurry applicable to water-rich stratum |
| CN113402219A (en) * | 2021-08-19 | 2021-09-17 | 天津智城工程技术有限公司 | Slurry mixed slurry and preparation method thereof |
| CN114380569A (en) * | 2022-01-24 | 2022-04-22 | 中铁第一勘察设计院集团有限公司 | Grouting slurry and grouting method for soft rock tunnel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255799A (en) * | 2008-04-18 | 2008-09-03 | 上海市第二市政工程有限公司 | Tunnel inner micro-destabilization slip-casting technique |
-
2009
- 2009-09-02 CN CN2009103064841A patent/CN101654356B/en active Active
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935198A (en) * | 2010-09-12 | 2011-01-05 | 上海市第二市政工程有限公司 | Environment-friendly shield construction single-liquid synchronous grouting slurry |
| CN101935198B (en) * | 2010-09-12 | 2012-08-29 | 上海城建市政工程（集团）有限公司 | Environment-friendly shield construction single-liquid synchronous grouting slurry |
| CN102250597A (en) * | 2011-06-24 | 2011-11-23 | 中国石油天然气集团公司 | Grouting slurry for unconsolidated strata |
| CN102617108A (en) * | 2012-04-17 | 2012-08-01 | 中铁十二局集团第三工程有限公司 | High-performance grouting slurry for karst subgrade of high-speed railway |
| CN102718441A (en) * | 2012-04-28 | 2012-10-10 | 中铁二局股份有限公司 | Slurry used in shield construction synchronous grouting and method for preparing same |
| CN103397845A (en) * | 2013-07-24 | 2013-11-20 | 国家电网公司 | Method of controlling building settlement caused by penetration of jacked pipe through grout replacement |
| CN104074530A (en) * | 2014-06-17 | 2014-10-01 | 中铁十五局集团有限公司 | Shield synchronous grouting construction method and construction material |
| CN104775824A (en) * | 2015-04-30 | 2015-07-15 | 中铁工程装备集团有限公司 | Slurry shield main engine for upper-soft lower-hard ground |
| CN104775824B (en) * | 2015-04-30 | 2017-01-04 | 中铁工程装备集团有限公司 | A kind of slurry shield main frame that can be used for upper-soft lower-hard ground |
| CN105130349A (en) * | 2015-07-15 | 2015-12-09 | 东南大学 | Foundation pit engineering waterproof curtain material based on industrial waste residue |
| CN105130349B (en) * | 2015-07-15 | 2017-06-23 | 东南大学 | A kind of base pit engineering water-stop curtain material based on industrial residue |
| CN105019913A (en) * | 2015-08-03 | 2015-11-04 | 中铁六局集团有限公司 | Base rock uplift region shielding tool-changing in-situ reinforcement method |
| CN105837118A (en) * | 2016-04-05 | 2016-08-10 | 中建三局集团有限公司 | Environmentally-friendly flexible self-healing waterproof curtain and production method thereof |
| CN105837118B (en) * | 2016-04-05 | 2018-06-26 | 中建三局集团有限公司 | A kind of environment-friendly type self-repairing flexible closes water-stop curtain and preparation method thereof |
| CN107129221A (en) * | 2017-06-26 | 2017-09-05 | 中铁四局集团第工程有限公司 | A kind of slurries suitable for low strength stratum shield duct piece grouting behind shaft or drift lining |
| CN107459324A (en) * | 2017-08-11 | 2017-12-12 | 山东大学 | A kind of shield anti-stratum settlement housing packing material and preparation method thereof |
| CN107459324B (en) * | 2017-08-11 | 2019-09-24 | 山东大学 | A kind of shield anti-stratum settlement shell packing material and preparation method thereof |
| CN107986711A (en) * | 2017-12-13 | 2018-05-04 | 中国水利水电第十工程局有限公司 | A kind of injection slurry applied to duct pieces of shield tunnel anti-floating and preparation method thereof |
| CN108442932A (en) * | 2018-02-27 | 2018-08-24 | 北京交通大学 | One kind being suitable for large diameter shield tunnel simultaneous grouting slurry |
| CN109626941A (en) * | 2018-11-29 | 2019-04-16 | 中铁隧道集团二处有限公司 | Inert slurry for Seepage water between concrete tube coupling |
| CN109534768A (en) * | 2018-11-29 | 2019-03-29 | 中铁隧道集团二处有限公司 | Inert slurry for Seepage water between concrete tube coupling |
| CN109626942A (en) * | 2018-12-14 | 2019-04-16 | 沈阳建筑大学 | The magnetorheological intelligent shield grouting material of one kind, preparation method and applications |
| CN109809771A (en) * | 2019-03-26 | 2019-05-28 | 江苏蓝圈新材料股份有限公司 | A kind of shield synchronization slip casting |
| CN110985001A (en) * | 2019-11-05 | 2020-04-10 | 渝黔铁路有限责任公司 | Advanced curtain grouting construction method suitable for high-pressure water-rich karst tunnel |
| CN110818334A (en) * | 2019-12-10 | 2020-02-21 | 中铁十四局集团隧道工程有限公司 | Slurry for shield grouting and preparation method thereof |
| CN111170711A (en) * | 2020-01-07 | 2020-05-19 | 河海大学 | Set-time-controllable grouting slurry for wall back grouting, grouting process and grouting device |
| CN111393128A (en) * | 2020-04-02 | 2020-07-10 | 上海隧道工程有限公司 | Double-liquid type shield synchronous grouting liquid and preparation method thereof |
| CN112727503A (en) * | 2021-02-02 | 2021-04-30 | 中建八局轨道交通建设有限公司 | Shield construction slurry applicable to water-rich stratum |
| CN113402219A (en) * | 2021-08-19 | 2021-09-17 | 天津智城工程技术有限公司 | Slurry mixed slurry and preparation method thereof |
| CN114380569A (en) * | 2022-01-24 | 2022-04-22 | 中铁第一勘察设计院集团有限公司 | Grouting slurry and grouting method for soft rock tunnel |
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| Publication number | Publication date |
|---|---|
| CN101654356B (en) | 2012-07-04 |
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