CN108798679A - Steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole - Google Patents

Steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole Download PDF

Info

Publication number
CN108798679A
CN108798679A CN201810596224.1A CN201810596224A CN108798679A CN 108798679 A CN108798679 A CN 108798679A CN 201810596224 A CN201810596224 A CN 201810596224A CN 108798679 A CN108798679 A CN 108798679A
Authority
CN
China
Prior art keywords
pipe
construction
steel tube
slip casting
oriented
Prior art date
Application number
CN201810596224.1A
Other languages
Chinese (zh)
Inventor
杨彪
李黎
梁恩华
万斐
唐忠全
浦同体
王国炜
付显波
秦凯
冯林
胡永成
刘杰松
欧阳剑
蒋雪莲
Original Assignee
中铁二局第工程有限公司
中铁二局第一工程有限公司
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 中铁二局第工程有限公司, 中铁二局第一工程有限公司 filed Critical 中铁二局第工程有限公司
Priority to CN201810596224.1A priority Critical patent/CN108798679A/en
Publication of CN108798679A publication Critical patent/CN108798679A/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E21D11/107Reinforcing elements therefor; Holders for the reinforcing elements
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries

Abstract

The present invention provides steel tube shed in a kind of shallow embedding single-track railway tunnel hole and goes out cavity construction method, is first digged along outline excavation on the basis of the top bar of existing three step, forms workbench;After platform is formed, by measuring alignment construction guidance wall;By force simulation, computer tube canopy squeezes into angle, and device to hole number is numbered, and number is the first punching of odd number, and then slip casting, odd number has been beaten plays even number and slip casting afterwards;To digging position formwork erection backfill after the completion of pipe roof construction;Restore main tunnel excavation supporting after backfill, excavation is appeared.To be limited by orographic condition when solving at present by steel tube shed into hole, regional custom cultural influence can not construct steel tube shed, lead to the problem into hole difficulty.Belong to constructing tunnel field.

Description

Steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole
Technical field
The present invention relates to steel tube sheds in a kind of shallow embedding single-track railway tunnel hole to go out cavity construction method, belongs to constructing tunnel neck Domain.
Background technology
Currently, tunnel outlet in the prior art is to have applied to be oriented to after wall and steel tube shed tunnel outlet again outside hole, but should Technology can not be completed under special circumstances, such as:Temporarily do not have the condition (no place or road are obstructed) for applying pipe canopy outside hole, It need to be that creation of appearing performs condition, seriously affect Tunnel Construction Schedule.
Invention content
It is an object of the invention to:Steel tube shed in a kind of shallow embedding single-track railway tunnel hole is provided and cavity construction method, with solution Certainly at present by steel tube shed into limited by orographic condition when hole, regional custom cultural influence can not construct steel tube shed, cause into hole Difficult problem.
To solve the above problems, quasi- go out cavity construction method using steel tube shed in such a shallow embedding single-track railway tunnel hole, The specific method is as follows:
Step 1:It is digged along outline excavation on the basis of the top bar of existing three step, forms workbench;
Step 2:After platform is formed, by measuring alignment construction guidance wall;
Step 3:By force simulation, computer tube canopy squeezes into angle, device to hole position according to the sequence from a side to the other side into Row number, number are the first punching of odd number, and then slip casting, odd number has been beaten plays even number and slip casting afterwards;
Step 4:To digging position formwork erection backfill after the completion of pipe roof construction;
Step 5:Restore main tunnel excavation supporting after backfill, excavation is appeared.
The workbench space that digs should meet down-the-hole drill working space, while ensure to be oriented to wall construction space.
Further:Provided pipe canopy is oriented to tube angulation when being oriented to wall concrete placings and steel tube shed squeezes into angle and coincide.
Further:It checks whether the outlet ends Guan Peng punch tunnel portal position before slip casting, needs to be sealed if punching It is stifled.
Further:Face is blocked before slip casting, while reserved exhaust pipe ensures slip casting effect.
Further:Digging space takes ad eundem concrete formwork erection to backfill.
Further:Reinforce excavation supporting measure, reinforces advance support on the original basis.
Preferably, step 1 digs top bar, tubing canopy operation platform:7m in advance when main tunnel is excavated to pipe roof construction position Top bar is digged, step height up improves 1.2m on the basis of existing, declines 0.7m toward middle step, digs rear top bar Height 4.75m, width 9.93m, length 7m reserve down-the-hole drill working space and lead wall and perform space.
Preferably, step 2 is oriented to wall construction:Wall is oriented to outside excavation contour line, is close to face and applies, leads wall use C20 concretes, longitudinal long 1m, thickness 1m;
(1) it before being oriented to wall construction, is detected to being oriented to wall foundation bearing capacity, if Lack of support, carries out foundation stabilization Processing;
(2) first with C20 concrete to carry out shop fixtures levelling, and the control of shop fixtures height is being oriented in foundation of wall absolute altitude;
(3) it is oriented to wall concrete construction and inner support is done using I18 profile steel frames, using 2 Pin framed bents;
(4) when being oriented to wall formwork erection, plan-position is set up to framed bent by survey crew and height carries out accurate setting-out, framed bent It carries out consolidation process after positioning, card is welded and fixed using steelframe when reinforcing;
(5) it is oriented to wall model to install using plank, it is ensured that be oriented to wall construction size;
(6) guide pipe use Φ 127mm, the hot rolled seamless steel tube of wall thickness 5mm, when guide pipe is installed by survey crew into Row is accurately positioned setting-out, is strictly controlled its direction and the gradient, and it is 2 ° that guide pipe, which installs the gradient, and 1m differences are 0.035m, side To parallel with line direction, aperture is fixed after guide pipe positioning.
Preferably, the specific method is as follows for step 3 pipe roof construction:
(1) pipe canopy uses outer diameter for Φ 89mm, and wall thickness is the hot rolled seamless steel tube of 8mm;
(2) pipe canopy circumferential direction lays 23, and circumferential direction lays spacing 0.4m, the single long 30m of pipe canopy;
(3) when pipe canopy direction controlling, pipe canopy drilling extrapolation angle takes 2 °, direction:It is parallel to line midline;
(4) pipe canopy is divided into two kinds of 3m, 6m, and every pipe canopy is by 4 3m, 3 6m short tube canopies compositions, when scene is spliced, it is ensured that The piece-ups in same cross section are less than or equal to 50%, and the connector of adjacent tubes canopy is staggered more than or equal to 1m;
(5) tube coupling connector use housing Φ 100mm, wall thickness be 3.5mm hot finished steel pipe, interior thread button, tube coupling be more than etc. In 0.3m, the outer thread button 0.15m of pipe boron steel pipe fitting with tube coupling connector to connect;
(6) pipe shed drilling rig 89mm bit bores, the control of boring direction is used to be controlled using inclinometer, jewel hole is complete High-pressure blast borehole cleaning is used at rear;
(7) steel pipe uses drilling machine jacking;
(8) when drilling machine jacking steel pipe, its thrust is made on same straight line, when jacking is had any problem, to use drill bit with steel pipe Jacking again after progress borehole cleaning;
(9) slip casting connecting tube is welded in 89 steel tube heads of Φ after steel pipe jacking, is used in combination valve to carry out end and stops at slurry Reason;
(10) tube shed grouting carries out slip casting using double-fluid grouting machine, and slip casting field test, grouting parameter are first carried out before slip casting It is determined by actual conditions adjustment by field test;
(11) trial operation first is carried out to the slip casting machine for connecting pipeline before slip casting;
(12) main reinforcement φ 16, the steel reinforcement cage of stirrup φ 8 and overall diameter 7cm are installed in guide pipe additional.
Preferably, step 4 workbench closing backfill:Template backrest is done using top bar arch after tube shed grouting, The small punching blocks of 20cm*150cm*5cm close mould and backfill C20 concrete, and ejection supporting operation, 7m job platforms are carried out after backfill Restore main tunnel after the completion of supporting to excavate.
Compared with prior art, advantage of the present invention is as follows:
1, using existing equipment in hole, top bar dig and has built the work for being adapted to pipe roof construction in hole Space, avoiding the Portal Section pipe canopy caused by topography inclement condition, custom culture limitation, expropriation of land problems of land utilization can not construct The problem of;
2, there is stronger adaptability, main tunnel is constructed to pipe canopy design and construction fare register and do not interfered by external condition, in work As space formed after can construct steel tube shed;
3, human resources are saved, are saved the duration, when hole inner tube canopy operation can work continuously, parallel operations, in synchronous construction It gets out of a predicament or an embarrassing situation, inverted arch, two linings.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the present invention will be made below further detailed Explanation, it should be understood that described herein specific examples are only used to explain the present invention, is not intended to limit the present invention.
Embodiment:
The present embodiment provides steel tube sheds in a kind of shallow embedding single-track railway tunnel hole to go out cavity construction method:
Step 1 digs top bar, tubing canopy operation platform:7m will appear on the stage in advance when main tunnel is excavated to pipe roof construction position Rank digs, and step height up improves 1.2m on the basis of existing, declines 0.7m toward middle step, digs rear top bar height 4.75m, width 9.93m, length 7m reserve down-the-hole drill working space and lead wall and perform space.
Step 2 is oriented to wall construction:Wall is oriented to outside excavation contour line, is close to face and applies, wall is led and uses C20 concretes, indulge To long 1m, thickness 1m.
(1) it before being oriented to wall construction, is detected to being oriented to wall foundation bearing capacity, if Lack of support, carries out foundation stabilization Processing.
(2) for the convenience of stand and formwork erection, it is levelling first shop fixtures to be carried out with C20 concrete, the control of shop fixtures height is being oriented to In foundation of wall absolute altitude.
(3) it is oriented to wall concrete construction and inner support is done using I18 profile steel frames, using 2 Pin framed bents.
(4) when being oriented to wall formwork erection, plan-position is set up to framed bent by survey crew and height carries out accurate setting-out, with true Protect the headroom size for being oriented to wall.Necessary consolidation process is carried out after framed bent positioning, and card is welded and fixed using steelframe when reinforcing.
(5) it is oriented to wall model to install using plank, it is ensured that be oriented to wall construction size (1m × 1m).
(6) guide pipe use Φ 127mm, the hot rolled seamless steel tube of wall thickness 5mm, when guide pipe is installed by survey crew into Row is accurately positioned setting-out, is strictly controlled its direction and the gradient, and it is 2 ° (1m differences are 0.035m) that guide pipe, which installs the gradient, Direction is parallel with line direction.Aperture is fixed after guide pipe positioning, to ensure that orifice tube is not moved in casting concrete Dynamic and deformation.
Step 3 pipe roof construction:
(1) pipe canopy uses outer diameter for Φ 89mm, and wall thickness is the hot rolled seamless steel tube of 8mm.
(2) pipe canopy circumferential direction lays 23, and circumferential direction lays spacing 0.4m, the single long 30m of pipe canopy (guiding stays 1 meter within the walls).
(3) when considering that this tunnel line is the control of right avertence curvilinear slope within the scope of pipe roof construction when pipe canopy direction controlling The problems such as considering the design grade for the degree of disturbing and pipe canopy that circuit longitudinal slope, 30m pipe canopies generate during setting in gravity, In summary reason pipe canopy drilling extrapolation angle takes 2 °, direction:It is parallel to line midline.
(4) pipe canopy is divided into two kinds of 3m, 6m, and every pipe canopy is by 4 3m, 3 6m short tube canopies compositions.To keep pipe canopy connector wrong It opens, when scene splicing should use different combinations to ensure the piece-ups in same cross section no more than 50%, adjacent tubes canopy Connector is staggered the requirement not less than 1m.
(5) it is the hot finished steel pipe of 3.5mm that tube coupling connector, which uses housing Φ 100mm, wall thickness, and interior thread button, tube coupling is not less than 0.3m.The outer thread button 0.15m of pipe boron steel pipe fitting with tube coupling connector to connect.
(6) pipe shed drilling rig 89mm bit bores, the control of boring direction is used to be controlled using inclinometer, jewel hole is complete High-pressure blast borehole cleaning is used at rear.(considers pipe roof construction length, should go out to confirm whether pipe canopy is punched in import, device to hole is answered if punching It mouthful is blocked, when closure, reserved gas vent ensured slip casting effect.).
(7) steel pipe using drilling machine jacking (squeeze into the exposed 0.3m of first segment, again by excavator jacking after connection, and so on Until being installed to design length).
(8) when drilling machine jacking steel pipe, make its thrust with steel pipe on same straight line as possible, when jacking is had any problem, no Will jacking by force, avoid tube bending from deforming, in jacking after then carrying out borehole cleaning with small diameter drill bit.
(9) slip casting connecting tube is welded in 89 steel tube heads of Φ after steel pipe jacking, is used in combination valve to carry out end and stops at slurry Reason, with mortar leakage prevention.
(10) tube shed grouting carries out slip casting using double-fluid grouting machine, the slurries cooperation that strictly empirically room provides when slip casting Than preparing, slip casting field test is first carried out before slip casting, grouting parameter is determined by field test by actual conditions adjustment.
(11) trial operation is carried out, first to connecting the slip casting machine of pipeline to ensure that mechanical energy runs well before slip casting.(note Slip casting first pressing 0.5^1.0Mpa, final pressure 2.0Mpa when slurry).
(12) main reinforcement φ 16, stirrup φ 8 are installed in guide pipe additional, total directly steel reinforcement cage of 7cm is to increase steel tube shed rigidity.
The closing backfill of step 4 workbench:Template backrest, 20cm* are done using top bar arch after tube shed grouting The small punching blocks of 150cm*5cm close mould and backfill C20 concrete.Ejection supporting operation is carried out after backfill, 7m job platform supportings are complete It is excavated at rear recovery main tunnel.
Step 5 main tunnel restores three step constructions:It waits for spraying again using reinforcing backrest arch after the completion of platform closing, be formed just Hole support system, while restoring main tunnel excavation, you can realization is appeared.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.

Claims (9)

1. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole, which is characterized in that the specific method is as follows:
Step 1:It is digged along outline excavation on the basis of the top bar of existing three step, forms workbench;
Step 2:After platform is formed, by measuring alignment construction guidance wall;
Step 3:By force simulation, computer tube canopy squeezes into angle, and device to hole number is compiled according to from a side to the sequence of the other side Number, number is the first punching of odd number, and then slip casting, odd number has been beaten plays even number and slip casting afterwards;
Step 4:To digging position formwork erection backfill after the completion of pipe roof construction;
Step 5:Restore main tunnel excavation supporting after backfill, excavation is appeared.
2. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, it is characterised in that:It is oriented to Provided pipe canopy is oriented to tube angulation when wall concrete placings and steel tube shed squeezes into angle and coincide.
3. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, it is characterised in that:Slip casting Whether the preceding outlet ends inspection Guan Peng punch tunnel portal position, need to be blocked if punching.
4. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, it is characterised in that:Slip casting It is preceding that face is blocked, while reserved exhaust pipe ensures slip casting effect.
5. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, it is characterised in that:It digs Ad eundem concrete formwork erection is taken to backfill in space.
6. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, it is characterised in that:Step 1 digs top bar, tubing canopy operation platform:7m digs top bar in advance when main tunnel is excavated to pipe roof construction position, existing On the basis of step height up improve 1.2m, toward middle step decline 0.7m, dig rear top bar height 4.75m, width 9.93m, Length 7m, reserves down-the-hole drill working space and leads wall and perform space.
7. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, it is characterised in that:Step 2 are oriented to wall construction:Wall is oriented to outside excavation contour line, is close to face and applies, wall is led and uses C20 concretes, longitudinal long 1m, thickness 1m;
(1) it before being oriented to wall construction, is detected to being oriented to wall foundation bearing capacity, if Lack of support, carries out stiffening basic ground;
(2) first with C20 concrete to carry out shop fixtures levelling, and the control of shop fixtures height is being oriented in foundation of wall absolute altitude;
(3) it is oriented to wall concrete construction and inner support is done using I18 profile steel frames, using 2 Pin framed bents;
(4) when being oriented to wall formwork erection, plan-position is set up to framed bent by survey crew and height carries out accurate setting-out, after framed bent positioning Consolidation process is carried out, card is welded and fixed using steelframe when reinforcing;
(5) it is oriented to wall model to install using plank, it is ensured that be oriented to wall construction size;
(6) guide pipe uses Φ 127mm, the hot rolled seamless steel tube of wall thickness 5mm to be carried out accurately by survey crew when guide pipe is installed Construction layout strictly controls its direction and the gradient, and it is 2 ° that guide pipe, which installs the gradient, and 1m differences are 0.035m, direction and line Road direction is parallel, fixes aperture after guide pipe positioning.
8. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, which is characterized in that step The specific method is as follows for 3 pipe roof constructions:
(1) pipe canopy uses outer diameter for Φ 89mm, and wall thickness is the hot rolled seamless steel tube of 8mm;
(2) pipe canopy circumferential direction lays 23, and circumferential direction lays spacing 0.4m, the single long 30m of pipe canopy;
(3) when pipe canopy direction controlling, pipe canopy drilling extrapolation angle takes 2 °, direction:It is parallel to line midline;
(4) pipe canopy is divided into two kinds of 3m, 6m, and every pipe canopy is by 4 3m, 3 6m short tube canopies compositions, when scene is spliced, it is ensured that same The piece-ups in cross section are less than or equal to 50%, and the connector of adjacent tubes canopy is staggered more than or equal to 1m;
(5) it is the hot finished steel pipe of 3.5mm that tube coupling connector, which uses housing Φ 100mm, wall thickness, and interior thread button, tube coupling is more than or equal to 0.3m, the outer thread button 0.15m of pipe boron steel pipe fitting with tube coupling connector to connect;
(6) it uses pipe shed drilling rig 89mm bit bores, the control of boring direction to be controlled using inclinometer, is adopted after the completion of jewel hole With high-pressure blast borehole cleaning;
(7) steel pipe uses drilling machine jacking;
(8) when drilling machine jacking steel pipe, its thrust is made on same straight line, when jacking is had any problem, to be carried out with drill bit with steel pipe Jacking again after borehole cleaning;
(9) slip casting connecting tube is welded in 89 steel tube heads of Φ after steel pipe jacking, is used in combination valve to carry out end and stops slurry processing;
(10) tube shed grouting carries out slip casting using double-fluid grouting machine, slip casting field test is first carried out before slip casting, grouting parameter passes through Field test is determined by actual conditions adjustment;
(11) trial operation first is carried out to the slip casting machine for connecting pipeline before slip casting;
(12) main reinforcement φ 16, the steel reinforcement cage of stirrup φ 8 and overall diameter 7cm are installed in guide pipe additional.
9. steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole according to claim 1, which is characterized in that step The closing backfill of 4 workbenches:Template backrest, the small punching blocks of 20cm*150cm*5cm are done using top bar arch after tube shed grouting Guan Mo backfills C20 concrete, and ejection supporting operation is carried out after backfill, restores just wide open after the completion of the supporting of 7m job platforms It digs.
CN201810596224.1A 2018-06-11 2018-06-11 Steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole CN108798679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810596224.1A CN108798679A (en) 2018-06-11 2018-06-11 Steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810596224.1A CN108798679A (en) 2018-06-11 2018-06-11 Steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole

Publications (1)

Publication Number Publication Date
CN108798679A true CN108798679A (en) 2018-11-13

Family

ID=64089018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810596224.1A CN108798679A (en) 2018-06-11 2018-06-11 Steel tube shed goes out cavity construction method in shallow embedding single-track railway tunnel hole

Country Status (1)

Country Link
CN (1) CN108798679A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110578536A (en) * 2019-10-15 2019-12-17 中铁十二局集团有限公司 Excavation support reinforcing method for underground excavation section of subway to penetrate existing street crossing channel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101387202A (en) * 2008-10-29 2009-03-18 中铁四局集团有限公司 Method for enlarging and digging tunnel portal at weak surrounding rock section in tunnel
CN101566063A (en) * 2009-06-04 2009-10-28 上海交通大学 Method of reinforcing soil body for inlet and outlet cave mouths of tunnel shield
CN103527214A (en) * 2013-11-04 2014-01-22 南京林业大学 Horizontal freezing and pipe shed combined subway shield tunnel reinforcing tip and method
CN104818991A (en) * 2015-03-30 2015-08-05 中铁二十四局集团福建铁路建设有限公司 Construction method of residual slope wash tunnel with shallow cover and unsymmetrical pressure
CN206830182U (en) * 2017-04-09 2018-01-02 中铁二院工程集团有限责任公司 A kind of tunnel steel tube shed is oriented to wall construction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101387202A (en) * 2008-10-29 2009-03-18 中铁四局集团有限公司 Method for enlarging and digging tunnel portal at weak surrounding rock section in tunnel
CN101566063A (en) * 2009-06-04 2009-10-28 上海交通大学 Method of reinforcing soil body for inlet and outlet cave mouths of tunnel shield
CN103527214A (en) * 2013-11-04 2014-01-22 南京林业大学 Horizontal freezing and pipe shed combined subway shield tunnel reinforcing tip and method
CN104818991A (en) * 2015-03-30 2015-08-05 中铁二十四局集团福建铁路建设有限公司 Construction method of residual slope wash tunnel with shallow cover and unsymmetrical pressure
CN206830182U (en) * 2017-04-09 2018-01-02 中铁二院工程集团有限责任公司 A kind of tunnel steel tube shed is oriented to wall construction

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
唐海斌: "《洞内大管棚在复杂环境下隧道洞口段施工的应用》", 《山西建筑》 *
罗德: "《浅埋偏压双线铁路隧道出洞施工技术探讨》", 《工程施工技术》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110578536A (en) * 2019-10-15 2019-12-17 中铁十二局集团有限公司 Excavation support reinforcing method for underground excavation section of subway to penetrate existing street crossing channel

Similar Documents

Publication Publication Date Title
CN102562075B (en) Large cross-section weak surrounding rock tunnel three-step and six-part short-distance construction method
CN100451295C (en) Tunnel dredging method suitable for railway large section IV, V class rock tunnel
CN102797252B (en) Construction method of underground continuous walls
CN102121395B (en) Method for integrated comprehensive management of gas in low-permeability single coal bed
CN102606162B (en) Quick construction method for weak surrounding rock shallowly-buried easily-collapsed area of tunnel
CN101614125B (en) Construction method of V-level surrounding rock tunnel
CN102606167B (en) Settlement control construction method for transverse grouting guide pipe of shallow underground excavation tunnel
CN100529329C (en) Socket shield machine construction method
CN105370290B (en) A kind of correcting and then reinforcing method of shield tunnel
CN102011397B (en) Construction process of concrete form water-stopping occlusion pile
CN104929648B (en) A kind of tunnel branch base tunnel construction method
CN103334770B (en) One is grown up reverse-slope tunnel ultra high water pressure rich water zone of fracture construction method
CN102562099B (en) Method for carrying out rapid face excavation construction of loess tunnel by double rows of small conduits
CN103835729B (en) Deep distance roadway surrounding rock pre grouting from the surface reinforcement process
CN101624910B (en) Method for reinforcing concealed tunnel
CN103410527B (en) Preliminary bracing construction method for tunnel with surrounding rocks containing collapsible loess and soft rocks
CN105089044B (en) A kind of construction method of horizontal pushing tow compression type coercion underground continuous wall system
CN102953739A (en) Bidirectional punching method for underground excavation of subway station
CN103993892B (en) A kind of supporting method for weak broken uneven strata constructing tunnel
CN104612698A (en) Method for constructing upper step middle partition wall of shallow-buried excavation tunnel
CN101864959B (en) Method for tunneling construction of main structure of underground station
CN101429764B (en) Infiltration water detection and plugging renovation devices and methods for underground continuous wall groove segment seam
CN108060908B (en) Long-distance horizontal directional drilling and grouting reinforcement process for water-rich sand layer under building group
CN103306687A (en) Construction method for deformation control via horizontal whirling jet grouting of long cantilever in soft-rock tunnel
WO2006057545A1 (en) Tunnelling method using pre-support concept and an adjustable apparatus thereof

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: 20181113

RJ01 Rejection of invention patent application after publication