CN104806251B - Subsidiary inverted excavation construction method for urban subway station under complex environment - Google Patents

Subsidiary inverted excavation construction method for urban subway station under complex environment Download PDF

Info

Publication number
CN104806251B
CN104806251B CN201510203753.7A CN201510203753A CN104806251B CN 104806251 B CN104806251 B CN 104806251B CN 201510203753 A CN201510203753 A CN 201510203753A CN 104806251 B CN104806251 B CN 104806251B
Authority
CN
China
Prior art keywords
excavation
pilot tunnel
layer
construction
supporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201510203753.7A
Other languages
Chinese (zh)
Other versions
CN104806251A (en
Inventor
罗富荣
童利红
张成满
王刚
徐凌
汪玉华
高亚彬
黄齐武
曹伍富
李名淦
虞蕹
张昊
代永双
王余良
张瑜
李全才
刘刚
张金亮
王玉龙
张飞
路开锋
苏洪波
李立功
朱发雨
许景昭
陈明昊
代昱昊
林纯鹏
杨壮志
赵宝华
刘涛
王振飞
贾喜涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Tunnel Group Co Ltd CRTG
Beijing General Municipal Engineering Design and Research Institute Co Ltd
Beijing MTR Construction Administration Corp
Original Assignee
China Railway Tunnel Group Co Ltd CRTG
Beijing General Municipal Engineering Design and Research Institute Co Ltd
Beijing MTR Construction Administration Corp
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 China Railway Tunnel Group Co Ltd CRTG, Beijing General Municipal Engineering Design and Research Institute Co Ltd, Beijing MTR Construction Administration Corp filed Critical China Railway Tunnel Group Co Ltd CRTG
Priority to CN201510203753.7A priority Critical patent/CN104806251B/en
Publication of CN104806251A publication Critical patent/CN104806251A/en
Application granted granted Critical
Publication of CN104806251B publication Critical patent/CN104806251B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK 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
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK 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
    • E21D9/001Improving soil or rock, e.g. by freezing; Injections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Soil Sciences (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The invention discloses a subsidiary inverted excavation construction method for an urban subway station under the complex environment and relates to the field of tunnel excavation. The method comprises the following steps of before inverted excavation construction, layering and segmenting the section according to the size of the section; before excavation, reinforcing a front soil body of a first-layer pilot tunnel excavation face by adopting deep-hole pre-grouting; performing excavation and primary support on a first-layer pilot tunnel by adopting an upper-lower step method; after the excavation and primary support of the first-layer pilot tunnel (6) are completely finished, performing excavation and primary support of a second-layer pilot tunnel, repeating the operation for a third-layer pilot tunnel, and performing next-layer pilot tunnel construction according to the mode; after the excavation of pilot tunnels of all layers are finished and the deformation of the primary support (2) is stabilized, dismantling a temporary support by adopting a piecewise interval method. According to the subsidiary inverted excavation construction method disclosed by the invention, the risk of the inverted excavation construction is greatly reduced, the construction safety is guaranteed, and the concealed excavation construction method of the tunnel is enriched; meanwhile, the parallel operation of demolition of an open excavation section and a concealed excavation section is also realized, so that the construction period is shortened.

Description

One kind faces upward cut construction method for City Subway Station to be attached under complex environment
【Technical field】
The present invention relates to tunnelling field, and in particular to one kind faces upward digging for City Subway Station to be attached under complex environment Construction method.
【Background technology】
City Subway Station is all located at city prosperity location substantially, and surrounding enviroment are complicated, by municipal pipeline or building shadow Ring, mostly using boring construction, only adopting cut and cover tunneling near the very shallow location of ground buried depth;For construction safety, with Toward being all open excavation section of first constructing, construct afterwards tunneling section, after the completion of open-cut, the scope of operation provided using open excavation section, by upper Downwards, excavation construction of bowing is carried out to station extreme direction;But due to being limited by periphery site condition, some open excavation sections near ground are deposited Change the phenomenon of shift time cycle length in building removal or pipeline, such as still traditionally construct, will seriously restrict the duration;Such as Fruit is using tunneling section of first constructing, open excavation section of constructing afterwards, the scope of operation provided using station end, from bottom to top, near ground surface end Open excavation section carry out facing upward excavation construction, now tunneling section construction and open excavation section building remove or pipeline change shifting can with parallel operations, The substantial amounts of duration can be saved;But when facing upward excavation construction, due to there is an elevation angle, the excavation face soil body can be produced under Gravitative Loads One downslide component, self-stable ability is poor, while can also cause advanced tubule supporting scope to shorten, such as adopts traditional tunneling Construction technology, it is easy to cause excavation face and arch to cave in, construction risk is very big, generally all forbids adopting.
【The content of the invention】
In order to overcome the shortcomings of above-mentioned technology, the invention provides a kind of attached for City Subway Station under complex environment Cut construction method is faced upward, by carrying out grouting and reinforcing to necromancer body in face of excavation, working procedure, height and the platform of each layer pilot tunnel is adjusted The size of rank, can not only resist the downslide component impact that excavation face front soil body Gravitative Loads power is produced, and also improve Core Soil Self-stability, not only greatly reduce and face upward excavation construction risk, it is ensured that construction safety, enrich bored tunnel construction method, Open excavation section is also achieved simultaneously to remove and tunneling section parallel operations, has saved the duration.
To realize goal of the invention as above, the present invention adopts technical scheme as described below:
One kind faces upward cut construction method for City Subway Station to be attached under complex environment, it is characterized in that:Methods described is concrete Comprise the steps:
The first step, before excavation construction is faced upward, section is layered according to cross dimensions, branch;
Second step, previous step is connect, before excavation, the front soil body in ground floor pilot drive face is entered using Deep-hole Pre-grouting Row soil stabilization, below ground floor before each layer pilot drive in the scall of Extra-fine sand, also takes deep hole to note in advance Slurry measure carries out front soil stabilization;
3rd step, ground floor pilot tunnel is excavated and preliminary bracing using upper and lower benching tunnelling method, the length of the bench excavation Degree >=5m, the height≤2m of bench excavation;After ground floor pilot drive and preliminary bracing are fully completed, second layer pilot tunnel is carried out Excavate and preliminary bracing, third layer pilot tunnel repeats second layer pilot tunnel, and the rest may be inferred, carries out lower floor's pilot tunnel construction;
4th step, treat that each layer pilot tunnel is all ended and complete, after preliminary bracing stabilization, by temporary support using between segmentation Remove every method, the order of dismounting from bottom to top, when interim median septum is removed, only abolishes concrete, then directly carry out waterproof and Two lining operations.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:The first step Section layering in ground floor height≤2.5m, below each layer height≤3.5m.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:3rd step Each layer excavation method adopt benching tunneling method.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:The ground floor Construction procedure be:First to the pilot tunnel of interim median septum side, 1. portion is excavated and supporting, and pilot tunnel is 1. after the completion of portion, then centering The pilot tunnel of next door opposite side 2. excavated and supporting by portion;After ground floor construction is finished, second layer construction is carried out, its construction step Suddenly it is:First to the side pilot tunnel of interim median septum, 3. portion is excavated and supporting, treat pilot tunnel 3. portion excavate and supporting complete 10m with Afterwards, 4. portion excavates and supporting to carry out pilot tunnel;After second layer construction is finished, third layer construction is carried out, its construction procedure is:Wait to lead 5. portion excavates and supporting is completed after 10m in hole, and 6. portion excavates and supporting to carry out pilot tunnel, and below every layer of pilot tunnel be by that analogy.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:4th step It is 4m~6m that length is removed in the segmentation of section gap dismounting method.
Using technical scheme as above, the present invention has superiority as described below:
The present invention is by carrying out grouting and reinforcing to necromancer body in face of excavation, and working procedure, the pilot tunnel for adjusting each layer pilot tunnel is high Degree and step dimension, can not only resist the downslide component impact that excavation face front soil body Gravitative Loads power is produced, and also improve core The self-stability of cubsoil;Under complex environment of the present invention subway station it is attached face upward cut construction method and greatly reduce face upward digging and apply Work risk, it is ensured that construction safety, enriches bored tunnel construction method, while also achieve open excavation section removing and tunneling Duan Ping Row operation, has saved the duration.
【Description of the drawings】
Fig. 1 is the sectional schematic diagram of the present invention;
Fig. 2 is using the section layering schematic diagram of the present invention;
Fig. 3 is the section branch schematic diagram using the present invention.
In figure:1st, advanced tubule;2nd, preliminary bracing;3rd, lock foot anchoring stock;4th, interim inverted arch;5th, interim median septum;6、 Ground floor;7th, the second layer;8th, third layer;9th, 1. portion;10th, 2. portion;11st, 3. portion;12nd, 4. portion;13rd, 5. portion;14th, 6. portion.
【Specific embodiment】
The present invention can be explained in more detail by the following examples, the following examples are the invention is not limited in;
With reference to described in accompanying drawing 1-3 for complex environment under City Subway Station is attached faces upward cut construction method, it is characterized in that: Methods described specifically includes following steps:
The first step, before excavation construction is faced upward, section is layered according to cross dimensions, branch, the sectional layer can be divided into At least two-layer;
Second step, previous step is connect, before excavation, Deep-hole Pre-grouting is adopted to the front soil body in the pilot drive face of ground floor 6 Soil stabilization is carried out, before each layer pilot drive that ground floor is in the scall of Extra-fine sand below 6, also takes deep hole pre- Slip casting measure carries out front soil stabilization;
3rd step, the pilot tunnel of ground floor 6 is excavated and preliminary bracing 2 using upper and lower benching tunnelling method, the bench excavation Length >=5m, the height≤2m of bench excavation;After the pilot drive of ground floor 6 and preliminary bracing 2 are fully completed, the second layer is carried out 7 pilot drives and preliminary bracing 2, the pilot tunnel of third layer 8 repeats the pilot tunnel of the second layer 7, and the rest may be inferred, carries out lower floor's pilot tunnel construction, applies Monitoring should be strengthened during work;
4th step, treat that each layer pilot tunnel is all ended and complete, after the stabilization of preliminary bracing 2, by temporary support using being segmented Interval method is removed, and the order of dismounting from bottom to top, when interim median septum 5 is removed, only abolishes concrete, then directly carries out waterproof And two lining operation.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:The first step Section layering in ground floor 6 height≤2.5m, below each layer height≤3.5m.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:3rd step Each layer excavation method adopt benching tunneling method.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:The ground floor 6 Construction procedure be:First to the pilot tunnel of the side of interim median septum 5,1. portion 9 is excavated and supporting, and pilot tunnel is 1. after the completion of 9, then To the pilot tunnel of the opposite side of median septum 5,2. portion 10 is excavated and supporting;After the construction of ground floor 6 is finished, carry out the second layer 7 and apply Work, its construction procedure is:First to the side pilot tunnel of interim median septum 5,3. portion 11 is excavated and supporting, treats that 3. portion 11 opens pilot tunnel Dig and supporting is completed after 10m, 4. portion 12 excavates and supporting to carry out pilot tunnel;After the construction of the second layer 7 is finished, third layer 8 is carried out Construct, its construction procedure is:After pilot tunnel, 5. portion 13 excavates and after supporting completes 10m, and 6. portion 14 excavates and supporting to carry out pilot tunnel, with Under every layer of pilot tunnel by that analogy.
Described faces upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that:4th step It is 4m~6m that length is removed in the segmentation of section gap dismounting method, and concrete length should at any time be adjusted according to Monitoring Result.
Embodiment
Implement under complex environment of the present invention that subway station is attached to face upward cut construction method with reference to accompanying drawing 1,2 and accompanying drawing 3, Its step is as follows:
A, before facing upward and digging section construction, first section is divided into into three layers six according to cross dimensions, the height of ground floor 6 is not more than 2.5m, second and third layer height is not more than 3.5m;
B, to the pilot tunnel of ground floor 6 1. portion 9,2. the excavation face of portion 10 front the soil body carry out Deep-hole Pre-grouting, and contour line outer shroud Range of grouting should suitably increase according to strata condition, if lower floor's pilot tunnel 3. portion 11,4. portion 12,5. portion 13,6. portion 14 in powder it is thin In the scalls such as sand, Deep-hole Pre-grouting measure should be also taken;
C, 1. portion 9 constructs to carry out the pilot tunnel of ground floor 6, and first advanced tubule 1 is applied in arch before excavating, after the completion of slip casting, 1. the pilot drive of portion 9 and supporting are carried out using up/down steps remaining core soil in advance, excavation drilling depth is 0.5m, and length of bench is typically not Less than 5m, and bench excavation height not should be greater than 2m, and During Initial Stage Construction supporting 2, interim median septum 5, interim inverted arch 4 in time, lock Foot anchor pole 3, after 1. the pilot drive of portion 9 and supporting are fully completed, 2. portion 10 excavates and preliminary bracing to carry out the pilot tunnel of ground floor 6, Step is with 1. portion;
D, the 1. portion 9 for treating ground floor 6,2. portion 10 construct after the completion of, 3. portion 11 constructs to carry out the pilot tunnel of the second layer 7, upper and lower Rank method is excavated and supporting, and step is stayed and set and supporting is with 1. portion 9,2. portion 10, treat the 3. pilot drive of portion 11 and supporting 10m with Afterwards, 4. portion 12 excavates and supporting to carry out the pilot tunnel of the second layer 7;
After the completion of E, the 4. 3. portion 11 for treating the second layer 7, the pilot drive of portion 12 and supporting, the 5. portion 13,6. of third layer 8 is carried out The pilot drive of portion 14 and supporting, step is with the 3. portion 11 of the second layer 7, the 4. pilot drive of portion 12 and supporting;
F, 1. portion 9,2. portion 10,3. portion 11,4. portion 12,5. portion 13, the 6. pilot tunnel of portion 14 are all applied and completed, and a just deformation After stable, temporary support is carried out(Interim inverted arch, interim median septum)Remove and two lining constructions.Temporary support takes section gap to tear open Remove, remove length 4m~6m, concrete length should at any time be adjusted according to Monitoring Result.Abolish first paragraph third layer 8 first to face When median septum concrete, then carry out construction of bottom plates, reach remove from bottom to top again after intensity interim inverted arch and abolish it is interim in Next door concrete, applies successively abutment wall and the lining of arch two, after the lining of first paragraph two is fully completed and reaches design strength, takes same Sample step carries out the dismounting of second segment temporary support and two lining constructions.
Part not in the detailed description of the invention is prior art.
The embodiment selected herein for the open purpose of the present invention, is presently considered to be suitable, but, Ying Liao Solution, it is contemplated that belonging to this design and all changes and the improvement of the embodiment in invention scope including all.

Claims (4)

1. it is a kind of to face upward cut construction method for City Subway Station to be attached under complex environment, it is characterized in that:Methods described is specifically wrapped Include following steps:
The first step, before excavation construction is faced upward, section is layered according to cross dimensions, branch;
Second step, previous step is connect, before excavation, to ground floor(6)The front soil body in pilot drive face is entered using Deep-hole Pre-grouting Row soil stabilization, in ground floor(6)Below before each layer pilot drive in the scall of Extra-fine sand, also take deep hole pre- Slip casting measure carries out front soil stabilization;
3rd step, by ground floor(6)Pilot tunnel is excavated and preliminary bracing using upper and lower benching tunnelling method(2), the bench excavation Length >=5m, the height≤2m of bench excavation;Treat ground floor(6)Pilot drive and preliminary bracing(2)After being fully completed, is carried out Two layers(7)Pilot drive and preliminary bracing(2), third layer(8)Pilot tunnel repeats the second layer(7)Pilot tunnel, the rest may be inferred, carries out lower floor Pilot tunnel is constructed;Ground floor in the layering of first step section(6)Height≤2.5m, below each layer height≤3.5m;
4th step, treat that each layer pilot tunnel is all excavated and complete, preliminary bracing(2)After stabilization, by temporary support using between segmentation Every method remove, the order of dismounting from bottom to top, interim median septum(5)During dismounting, concrete is only abolished, then directly carry out waterproof And two lining operation.
2. it is according to claim 1 to face upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that: The excavation method of each layer of the 3rd step adopts benching tunneling method.
3. it is according to claim 1 to face upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that: The ground floor(6)Construction procedure be:First to interim median septum(5)The pilot tunnel of side 1. portion(9)Excavated and supporting, led Hole 1. portion(9)After the completion of, then to median septum(5)The pilot tunnel of opposite side 2. portion(10)Excavated and supporting;Treat ground floor(6)Apply After work is finished, the second layer is carried out(7)Construct, its construction procedure is:First to interim median septum(5)Side pilot tunnel 3. portion(11)Enter Row is excavated and supporting, treats pilot tunnel 3. portion(11)Excavate and supporting is completed after 10m, carry out pilot tunnel 4. portion(12)Excavate and supporting; Treat the second layer(7)After construction is finished, third layer is carried out(8)Construct, its construction procedure is:Treat pilot tunnel 5. portion(13)Excavate and supporting After completing 10m, pilot tunnel 6. portion is carried out(14)Excavate and supporting, below every layer of pilot tunnel be by that analogy.
4. it is according to claim 1 to face upward cut construction method for City Subway Station under complex environment to be attached, it is characterized in that: It is 4m~6m that length is removed in the segmentation of the 4th step section gap dismounting method.
CN201510203753.7A 2015-04-27 2015-04-27 Subsidiary inverted excavation construction method for urban subway station under complex environment Active CN104806251B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510203753.7A CN104806251B (en) 2015-04-27 2015-04-27 Subsidiary inverted excavation construction method for urban subway station under complex environment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510203753.7A CN104806251B (en) 2015-04-27 2015-04-27 Subsidiary inverted excavation construction method for urban subway station under complex environment

Publications (2)

Publication Number Publication Date
CN104806251A CN104806251A (en) 2015-07-29
CN104806251B true CN104806251B (en) 2017-05-17

Family

ID=53691403

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510203753.7A Active CN104806251B (en) 2015-04-27 2015-04-27 Subsidiary inverted excavation construction method for urban subway station under complex environment

Country Status (1)

Country Link
CN (1) CN104806251B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107420106A (en) * 2017-08-08 2017-12-01 中铁六局集团有限公司 The small spacing Under-cross tunnel excavation method in subway station and Under-cross tunnel excavation method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106608491A (en) * 2015-10-22 2017-05-03 中铁二局集团有限公司 Adjustable conveying belt muck discharging method for high-slope-ratio entrance and exit channel
CN106437725A (en) * 2016-10-31 2017-02-22 北京市政建设集团有限责任公司 Air flue underground excavation section structural construction method
CN109339798B (en) * 2018-10-19 2021-05-04 重庆大学 Core soil removing method for improving tunnel double-side-wall pit guiding method construction
CN109372522B (en) * 2018-11-27 2020-12-01 中铁隆工程集团有限公司 Construction method of complex overlapping tunnel for urban rail transit
CN109736586A (en) * 2018-12-14 2019-05-10 成都市建筑设计研究院 A method of it abolishing existing underground station side wall and punches transformation
CN109736843B (en) * 2019-01-18 2020-06-19 北京市政路桥股份有限公司 Reverse waterproof method for assembling and pouring two linings of small template
CN110295931A (en) * 2019-06-18 2019-10-01 中国水利水电第十四工程局有限公司 One kind being suitable for the method for dismounting of Shallow-buried longspan tunnel " well " font temporary support
CN113136893B (en) * 2021-04-24 2022-06-17 浙江兴业市政工程有限公司 Unitized construction method of underground connecting channel
CN113202499B (en) * 2021-05-18 2024-05-31 中铁三局集团有限公司 Long-distance high-lifting underground tunnel construction method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101086209A (en) * 2007-07-23 2007-12-12 北京交通大学 Shield tunneling and shallow tunneling combined construction method for building underground station
CN102392648A (en) * 2011-10-12 2012-03-28 北京市轨道交通建设管理有限公司 Method for building subway station by expansively digging large-diameter shield tunnel
CN103821167A (en) * 2014-03-17 2014-05-28 北京市政建设集团有限责任公司 Construction method for subway station body

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08270374A (en) * 1995-03-31 1996-10-15 Hazama Gumi Ltd Blasting type tunnel construction method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101086209A (en) * 2007-07-23 2007-12-12 北京交通大学 Shield tunneling and shallow tunneling combined construction method for building underground station
CN102392648A (en) * 2011-10-12 2012-03-28 北京市轨道交通建设管理有限公司 Method for building subway station by expansively digging large-diameter shield tunnel
CN103821167A (en) * 2014-03-17 2014-05-28 北京市政建设集团有限责任公司 Construction method for subway station body

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
不同工法的暗挖车站上穿既有线对其以及周边环境的影响;许俊伟等;《隧道与地下工程》;20100731;第28卷(第4期);全文 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107420106A (en) * 2017-08-08 2017-12-01 中铁六局集团有限公司 The small spacing Under-cross tunnel excavation method in subway station and Under-cross tunnel excavation method

Also Published As

Publication number Publication date
CN104806251A (en) 2015-07-29

Similar Documents

Publication Publication Date Title
CN104806251B (en) Subsidiary inverted excavation construction method for urban subway station under complex environment
CN102071947B (en) Construction method for soft surrounding rock section of large-span tunnel portal
CN105888703B (en) Super Shallow Covered Metro Station construction method under lateral canopy lid is performed in micro- pilot tunnel
CN104653187B (en) Water-rich sand layer geology large cross-section tunnel excavation method
CN104047623B (en) A kind of big across cavern excavation construction method
CN103452561B (en) Vertical in-tunnel construction method of multilayer transverse channel of underground excavation station of metro, and construction method on east side and west side
CN107218046A (en) Mechanical assistance sealing Station structure and construction method in a kind of pilot tunnel
CN104632227B (en) Subway station excavation technology of single-layer beam arch structure
CN106223967B (en) A kind of great burying rectangle or class rectangle tunneling shield constructing device and method
CN109139021B (en) Multi-step multi-pilot-hole construction organization method
CN106567717A (en) Construction oblique channel structure utilizing subway exit and entrance and construction method
CN102182466A (en) Excavating method for jump-digging of double-side wall guide pit combined arch part of tunnel
CN102720504A (en) Double-side-wall-pilot-hole subsection bench cut method construction method
CN106761778A (en) A kind of underground digging in subway station construction technology suitable for upper-soft lower-hard ground
CN107288642A (en) PBA construction technologies
CN207063982U (en) Mechanical assistance sealing Station structure in a kind of pilot tunnel
CN110486036B (en) Construction method for expanding arch foot primary support arch cover method
CN102979531A (en) Construction method and structure for reinforcing large rock slope deep weak structural plane
CN107401161A (en) High ferro shield tunnel construction method is worn under pipe-roof method and MJS method joint reinforcements
CN110374091A (en) A kind of rectangle friction pile mechanical hole building construction method
CN205100989U (en) Utilize oblique access structure of subway access & exit double as construction
CN109594995B (en) Weak surrounding rock tunnel perturbation motive machinery subsection tunneling construction method
CN208252120U (en) A kind of shaft of vertical well and shaft station interconnecting piece
CN107013219A (en) Shed-pipe Advanced Support isolates the method for boulder group above a kind of shield tunnel
CN105862725A (en) Underground construction preliminary grouting waterproof and anti-seepage supporting technology

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant