CN108425686A - Tunnel portal expanding reach secondary lining applies method - Google Patents

Tunnel portal expanding reach secondary lining applies method Download PDF

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Publication number
CN108425686A
CN108425686A CN201810350907.9A CN201810350907A CN108425686A CN 108425686 A CN108425686 A CN 108425686A CN 201810350907 A CN201810350907 A CN 201810350907A CN 108425686 A CN108425686 A CN 108425686A
Authority
CN
China
Prior art keywords
lateral
jacking block
secondary lining
arc
screw
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.)
Pending
Application number
CN201810350907.9A
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Chinese (zh)
Inventor
赵勇
冯勇
王世琦
黄泽方
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.)
Rail Transit Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Original Assignee
Rail Transit Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
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 Rail Transit Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd filed Critical Rail Transit Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Priority to CN201810350907.9A priority Critical patent/CN108425686A/en
Publication of CN108425686A publication Critical patent/CN108425686A/en
Pending legal-status Critical Current

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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
    • 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
    • E21D11/102Removable shuttering; Bearing or supporting devices therefor

Abstract

The invention discloses a kind of tunnel portal expanding reach secondary linings to apply method, solves the problems, such as that existing secondary lining trolley externally can not carry out secondary lining and apply in the hole of imperial palace toy trumpet shape.In trolley portal frame(3)Two vertical pillars lateral surface on be provided with the vertical angle seat arranged along the vertical direction(13), in vertical angle seat(13)On along the vertical direction arranged for interval have lateral double-end lead-screw(15), lateral double-end lead-screw(15)Inner end be connected to leading screw inner end hinge hole(14)On, in each lateral double-end lead-screw(15)Outboard end on be connected with the connection of lateral jacking block and lead to beam(16), lead to beam in every lateral jacking block connection(16)Lateral surface on be positioned apart from lateral arc jacking block(17), each top curve jacking block on same section(9)And lateral arc jacking block(17)It is sequentially connected in series the arc jacking block chain of composition arcuate shape, the secondary lining for realizing hole applies the high purpose of period short construction quality.

Description

Tunnel portal expanding reach secondary lining applies method
Technical field
Apply method the present invention relates to a kind of tunnel portal secondary lining, more particularly to the two of a kind of tunnel portal expanding reach Secondary lining cutting applies method.
Background technology
Mountain tunnel hole(General length is 100 meters or so ranges)It is traditionally arranged to be the small gradual change type toroidal of outer imperial palace Shape structure, to play the role of reducing windage when train enters tunnel.It is typically to adopt in the secondary lining in this section of tunnel of constructing With " all round victory " holder, to carry out the assembled work of secondary lining fritter template, this construction method, which exists, to be set up " all round victory " Holder tedious process, heavy workload, problem long in time limit;And " all round victory " holder seriously hinder constructing tunnel equipment into Go out tunnel, after the completion of secondary lining, it is also necessary to remove " all round victory " holder, expend a large amount of human and material resources and financial resources.And show Some secondary lining trolleys are only applicable to standard section constructing tunnel, and standard section tunnel is cylinder in longitudinal direction, existing Secondary lining trolley on template be made of top curve template and two pieces of lateral arc formworks, the sky that three pieces of templates are formed Between be in the form of a column, externally can not carry out secondary lining and apply in the hole of imperial palace toy trumpet shape.
Invention content
The present invention provides a kind of tunnel portal expanding reach secondary linings to apply method, solves existing secondary lining platform Vehicle can not the hole of external imperial palace toy trumpet shape carry out the technical issues of secondary lining applies.
The present invention is to solve the above technical problem by the following technical programs:
A kind of tunnel portal expanding reach secondary lining applies trolley, including trolley track, and trolley row is provided on trolley track Trolley is walked, two parallel trolley portal frame base longerons are provided on trolley walking dolly, in two parallel trolley portal frames It has been positioned apart from trolley portal frame on base longerons, two top hydraulic pressure thousand are both provided on the top beam of each trolley portal frame Jin top, interim crossbeam is provided in two top hydraulic jacks, and the adjustable pad in top has been positioned apart from interim crossbeam Block is both provided with top single head leading screw at the top of every pile, top is both provided on each top single head leading screw on adjustable cushion block Portion's longeron, top longitudinal beam and trolley portal frame base longerons are arranged along tunnel excavation direction, in each top longitudinal beam It has been positioned apart from top curve jacking block, top jacking block is both provided on the left and right end face of each top curve jacking block and is connected Lifting lug is connect, each top curve jacking block on the same trolley portal frame connects arc at the top of lifting lug connection composition by top jacking block Shape jacking block chain;It is positioned apart from lateral adjustable cushion block on the lateral surface of two vertical pillars of trolley portal frame, in side It is connected with detachable vertical auxiliary strut on the lateral surface of adjustable cushion block, edge is provided on detachable vertical auxiliary strut Vertical angle seat arranged in the up-down direction has leading screw inner end hinged in vertical angle seat upper edge upper and lower directions arranged for interval There are lateral double-end lead-screw, the inner end connection of lateral double-end lead-screw in hole in vertical angle seat upper edge upper and lower directions arranged for interval On the hinge hole of leading screw inner end, it is connected with lateral jacking block connection on the outboard end of each lateral double-end lead-screw and leads to beam, each side It is horizontally disposed each other along tunnel excavation direction to connect logical beam to jacking block, is led on the lateral surface of beam in every lateral jacking block connection It has been positioned apart from lateral arc jacking block, lateral jacking block connection is both provided on the upper and lower end face of every piece of lateral arc jacking block Lifting lug, each top curve jacking block and lateral arc jacking block on same section are sequentially connected in series the arc jacking block of composition arcuate shape Chain, multiple small size templates are sequentially connected in series a group camber gradual change gang form, and arc gradual change gang form is arranged in arcuate shape Arc jacking block chain lateral surface on;By adjusting the length of each lateral double-end lead-screw on same cross section, arc can be made The cambered surface of jacking block chain is coincide with hole arcuate flanks;It is each lateral on each trolley portal frame on different cross sections by adjusting again The length of double-end lead-screw can make the lateral surface of each arc jacking block chain on tunnel excavation direction in the small horn-like shape of outer imperial palace Shape, to reach the arc gradual change gang form for making the small size template on the outside of these arc jacking blocks be sequentially connected in series composition in outer big Interior toy trumpet shape.
Top hydraulic jack folding and unfolding adjusting screw is provided on the top beam of trolley portal frame, in top hydraulic jack The both ends of folding and unfolding adjusting screw are connected separately with top hydraulic jack, to facilitate the position of top hydraulic jack to adjust.
A kind of tunnel portal expanding reach secondary lining applies method, includes the following steps:
The first step, make wide 60 centimetres of 30 centimeter length small size secondary lining template, and by the secondary lining of each small size Template is sequentially connected in series a group camber gradual change gang form;
Second step makes lateral arc jacking block and is connected with lateral jacking block and leads to beam, on the upper and lower end face of lateral arc jacking block respectively Lateral jacking block connection lifting lug is set;
Third step, the hydraulic jack at the top of installation on the top beam of trolley portal frame, are installed interim in the hydraulic jack of top Crossbeam, the adjustable cushion block at the top of installation on interim crossbeam, the single head leading screw at the top of installation on the adjustable cushion block of top, at top Top longitudinal beam is installed on single head leading screw, top curve jacking block is installed in compartment of terrain in top longitudinal beam;Each top curve jacking block is led to It crosses the top jacking block connection lifting lug being arranged on left and right end face and connects into top curve jacking block chain;
4th step, lateral adjustable cushion block is installed in compartment of terrain on two column lateral surfaces of trolley portal frame, is laterally being adjusted Detachable vertical auxiliary strut is installed on the lateral surface of cushion block, vertical angle is installed on the lateral surface of detachable vertical auxiliary strut Bridle iron is arranged at intervals with leading screw inner end hinge hole on vertical angle seat;
5th step makes the lateral logical beam of jacking block connection, and compartment of terrain on the lateral surface for leading to beam is connected in lateral jacking block and installs lateral arc Shape jacking block;
The lateral jacking block for being equipped with lateral arc jacking block is connected and is led to after beam sling with crane by the 6th step, with top curve jacking block Chain link together, then, after successively slinging the logical beam of the lateral jacking block for being respectively equipped with lateral arc jacking block connection with crane, is led to It crosses lateral jacking block connection lifting lug to be sequentially connected in series, forms the arc jacking block chain of arcuate shape;
The outboard end of lateral double-end lead-screw is connected on the lateral logical beam of jacking block connection by the 7th step, will be in lateral double-end lead-screw Side is connected on the hinge hole of leading screw inner end, and compartment of terrain is sequentially connected lateral double-end lead-screw from top to bottom;
8th step adjusts each lateral double-end lead-screw respectively, makes the arc of each top curve jacking block and each lateral arc jacking block composition The arc jacking block chain of shape is in u-shaped cross-section shape, on tunnel excavation direction, makes the arc jacking block chain of each arcuate shape be in It is horn-like;
The arc jacking block chain for being bounded on each side the arcuate shape formed to arc jacking block is arranged in arc gradual change gang form by the 9th step On lateral surface, to complete the assembling of tunnel portal expanding reach secondary lining trolley;
The secondary lining trolley being completed is moved at the expansion section construction of hole by the tenth step, according to hole secondary lining Design section size further adjusts each top single head leading screw and each lateral double-end lead-screw, makes the section ruler of secondary lining trolley It is very little to coincide with hole secondary lining design section size;
11st step pours secondary lining concrete;
12nd step, after the intensity of the secondary lining concrete poured reaches design requirement, adjust and shrink each top single head silk Thick stick and each lateral double-end lead-screw, the concrete for making secondary lining trolley formwork and pouring are detached from, and mobile secondary lining trolley arrives down The step of the tenth step and 11 step are repeated after at one plate Second Lining Construction.
The present invention is realized by the trolley suitable for expanding reach hole secondary lining of special designing to compared with long trumpet mouth The conveniently job execution of the secondary lining at hole, does not interfere with the export & import of equipment in tunnel excavation in the construction process Mouthful operation, the secondary lining at hole apply that the period is short, and construction quality is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings:
A kind of tunnel portal expanding reach secondary lining applies trolley, including trolley track 1, and trolley is provided on trolley track 1 Walking dolly 2 is provided with trolley portal frame 3 on trolley walking dolly 2, and top is provided on the top beam of trolley portal frame 3 Hydraulic jack 4 is provided with interim crossbeam 5 in top hydraulic jack 4, and top has been positioned apart from interim crossbeam 5 Adjustable cushion block 6 is both provided with top single head leading screw 7 at the top of every pile, in each top single head leading screw 7 on adjustable cushion block 6 On be both provided with top longitudinal beam 8, top curve jacking block 9 is both provided in each top longitudinal beam 8, in top curve jacking block 9 Top jacking block connection lifting lug is both provided on left and right end face;It is spaced on the lateral surface of two vertical pillars of trolley portal frame 3 Ground is provided with lateral adjustable cushion block 11, and detachable vertical auxiliary strut is connected on the lateral surface of lateral adjustable cushion block 11 12, it is provided with the vertical angle seat 13 arranged along the vertical direction on detachable vertical auxiliary strut 12, in vertical angle steel branch Arranged for interval has leading screw inner end hinge hole 14 along the vertical direction on seat 13, is spaced along the vertical direction on vertical angle seat 13 It is disposed with lateral double-end lead-screw 15, the inner end of lateral double-end lead-screw 15 is connected on leading screw inner end hinge hole 14, each It is connected with lateral jacking block connection on the outboard end of lateral double-end lead-screw 15 and leads to beam 16, it is along tunnel that beam 16 is led in each lateral jacking block connection Excavation direction is horizontally disposed each other, and lateral arc has been positioned apart from the lateral surface that beam 16 is led in every lateral jacking block connection Jacking block 17 is both provided with lateral jacking block connection lifting lug 18, in same section on the upper and lower end face of every piece of lateral arc jacking block 17 On each top curve jacking block 9 and lateral arc jacking block 17 be sequentially connected in series the arc jacking block chain of composition arcuate shape, multiple small rulers Very little template 10 is sequentially connected in series a group camber gradual change gang form, and the arc jacking block in arcuate shape is arranged in arc gradual change gang form On the lateral surface of chain.
Top hydraulic jack folding and unfolding adjusting screw 19, the hydraulic pressure thousand at top are provided on the top beam of trolley portal frame 3 The both ends of jin top folding and unfolding adjusting screw 19 are connected separately with top hydraulic jack 4.
A kind of tunnel portal expanding reach secondary lining applies method, includes the following steps:
The first step, make wide 60 centimetres of 30 centimeter length small size secondary lining template 10, and by the secondary lining of each small size It builds template 10 and is sequentially connected in series a group camber gradual change gang form;
Second step makes lateral arc jacking block 17 and is connected with lateral jacking block and leads to beam 16, in the upper and lower end face of lateral arc jacking block 17 On lateral jacking block connection lifting lug 18 is respectively set;
Third step, on the top beam of trolley portal frame 3 installation at the top of hydraulic jack 4, install and face in top hydraulic jack 4 When crossbeam 5, on interim crossbeam 5 installation at the top of adjustable cushion block 6, on top adjustable cushion block 6 installation at the top of single head leading screw 7, top longitudinal beam 8 is installed on top single head leading screw 7, the compartment of terrain installation top curve jacking block 9 in top longitudinal beam 8;By each top Portion's arc jacking block 9 connects lifting lug by the top jacking block being arranged on left and right end face and connects into top curve jacking block chain;
4th step, lateral adjustable cushion block 11 is installed in compartment of terrain on two column lateral surfaces of trolley portal frame 3, lateral adjustable The detachable vertical auxiliary strut 12 of installation on the lateral surface of cushion block 11 is saved, is pacified on the lateral surface of detachable vertical auxiliary strut 12 Vertical angle seat 13 is filled, leading screw inner end hinge hole 14 is arranged at intervals on vertical angle seat 13;
5th step makes the lateral logical beam 16 of jacking block connection, and compartment of terrain installation side on the lateral surface for leading to beam 16 is connected in lateral jacking block To arc jacking block 17;
The lateral jacking block for being equipped with lateral arc jacking block 17 is connected and is led to after beam 16 sling with crane by the 6th step, with top curve The lateral jacking block for being respectively equipped with lateral arc jacking block 17 together, then, is connected logical beam 16 successively and uses crane by jacking block chain link After slinging, lifting lug 18 is connected by lateral jacking block and is sequentially connected in series, the arc jacking block chain of arcuate shape is formed;
The outboard end of lateral double-end lead-screw 15 is connected to lateral jacking block and connected and led on beam 16 by the 7th step, by lateral double-end lead-screw 15 inner end is connected on leading screw inner end hinge hole 14, and compartment of terrain is sequentially connected lateral double-end lead-screw 15 from top to bottom;
8th step adjusts each lateral double-end lead-screw 15 respectively, and each top curve jacking block 9 is made to be formed with each lateral arc jacking block 17 The arc jacking block chain of arcuate shape makes the arc jacking block of each arcuate shape in u-shaped cross-section shape on tunnel excavation direction Chain is in horn-like;
9th step, the arc jacking block chain that the setting of arc gradual change gang form is bounded on each side to the arcuate shape formed to arc jacking block 17 Lateral surface on, to complete the assembling of tunnel portal expanding reach secondary lining trolley;
The secondary lining trolley being completed is moved at the expansion section construction of hole by the tenth step, according to hole secondary lining Design section size further adjusts each top single head leading screw 7 and each lateral double-end lead-screw 15, makes the section of secondary lining trolley Size is coincide with hole secondary lining design section size;
11st step pours secondary lining concrete;
12nd step, after the intensity of the secondary lining concrete poured reaches design requirement, adjust and shrink each top single head silk Thick stick 7 and each lateral double-end lead-screw 15, the concrete for making secondary lining trolley formwork and pouring are detached from, and mobile secondary lining trolley arrives The step of the tenth step and 11 step are repeated after at next plate Second Lining Construction.

Claims (1)

1. a kind of tunnel portal expanding reach secondary lining applies method, include the following steps:
The secondary lining template of the first step, the small size of wide 60 centimetres of 30 centimeter length of making(10), and by the secondary of each small size Lining shuttering(10)It is sequentially connected in series a group camber gradual change gang form;
Second step makes lateral arc jacking block(17)Logical beam is connected with lateral jacking block(16), in lateral arc jacking block(17)It is upper, Lateral jacking block connection lifting lug is respectively set on lower face(18);
Third walks, in trolley portal frame(3)Top beam on installation top hydraulic jack(4), in top hydraulic jack(4)On Interim crossbeam is installed(5), in interim crossbeam(5)Adjustable cushion block at the top of upper installation(6), in top adjustable cushion block(6)Upper peace Dress top single head leading screw(7), in top single head leading screw(7)Upper installation top longitudinal beam(8), in top longitudinal beam(8)Upper compartment of terrain peace Fill top curve jacking block(9);By each top curve jacking block(9)Lifting lug is connected by the top jacking block being arranged on left and right end face to connect It is connected into top curve jacking block chain;
4th step, in trolley portal frame(3)Two column lateral surfaces on compartment of terrain lateral adjustable cushion block is installed(11), lateral Adjustable cushion block(11)Lateral surface on the detachable vertical auxiliary strut of installation(12), in detachable vertical auxiliary strut(12)'s Vertical angle seat is installed on lateral surface(13), in vertical angle seat(13)On be arranged at intervals with leading screw inner end hinge hole (14);
5th step makes the lateral logical beam of jacking block connection(16), connected in lateral jacking block and lead to beam(16)Lateral surface on compartment of terrain peace Fill lateral arc jacking block(17);
6th step will be equipped with lateral arc jacking block(17)Lateral jacking block connection lead to beam(16)After being sling with crane, with top Arc jacking block chain link together, then, will respectively be equipped with lateral arc jacking block successively(17)Lateral jacking block connection lead to beam (16)After being sling with crane, lifting lug is connected by lateral jacking block(18)It is sequentially connected in series, forms the arc jacking block chain of arcuate shape;
7th step, by lateral double-end lead-screw(15)Outboard end be connected to the connection of lateral jacking block and lead to beam(16)On, by lateral double end Leading screw(15)Inner end be connected to leading screw inner end hinge hole(14)On, compartment of terrain is sequentially connected lateral bipitch silk from top to bottom Thick stick(15);
8th step adjusts each lateral double-end lead-screw respectively(15), make each top curve jacking block(9)With each lateral arc jacking block(17) The arc jacking block chain of the arcuate shape of composition makes the arc of each arcuate shape in u-shaped cross-section shape on tunnel excavation direction Shape jacking block chain is in horn-like;
The setting of arc gradual change gang form is bounded on each side to arc jacking block by the 9th step(17)The arc jacking block of the arcuate shape of composition On the lateral surface of chain, to complete the assembling of tunnel portal expanding reach secondary lining trolley;
The secondary lining trolley being completed is moved at the expansion section construction of hole by the tenth step, according to hole secondary lining Design section size further adjusts each top single head leading screw(7)With each lateral double-end lead-screw(15), make secondary lining trolley Cross dimensions is coincide with hole secondary lining design section size;
11st step pours secondary lining concrete;
12nd step, after the intensity of the secondary lining concrete poured reaches design requirement, adjust and shrink each top single head silk Thick stick(7)With each lateral double-end lead-screw(15), the concrete disengaging for making secondary lining trolley formwork and pouring, mobile secondary lining platform Vehicle at next plate Second Lining Construction after repeat the tenth step and the step of 11 step.
CN201810350907.9A 2018-04-18 2018-04-18 Tunnel portal expanding reach secondary lining applies method Pending CN108425686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810350907.9A CN108425686A (en) 2018-04-18 2018-04-18 Tunnel portal expanding reach secondary lining applies method

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110107314A (en) * 2019-04-30 2019-08-09 中国葛洲坝集团第二工程有限公司 Transition region of tunnel lining construction method
CN110242328A (en) * 2019-06-24 2019-09-17 中铁隧道局集团有限公司 A kind of Tunnel Second Lining Construction method
CN110273695A (en) * 2019-07-13 2019-09-24 中国三冶集团有限公司 A kind of Tunnel Second Lining formwork jumbo and its stage molding pouring procedure

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CN201574763U (en) * 2009-12-10 2010-09-08 吴真珍 Hydraulic lining trolley
CN102022123A (en) * 2009-09-09 2011-04-20 中交隧道工程局有限公司 Integral lining method for tunnel with altered diameter by model board trolley
CN203321538U (en) * 2013-06-25 2013-12-04 中铁十六局集团地铁工程有限公司 Variable-cross-section tunnel lining mold
CN103806924A (en) * 2014-03-07 2014-05-21 陕西理工学院 Steel form carrier variable camber gear for concrete lining for cave depot
CN104763444A (en) * 2015-02-03 2015-07-08 四川省创力隧道机械设备有限公司 Adjustable hydraulic hammer rig for tunnel
CN104963699A (en) * 2015-07-01 2015-10-07 中国葛洲坝集团三峡建设工程有限公司 Modular steel form trolley
CN205370586U (en) * 2015-12-31 2016-07-06 中铁十八局集团第三工程有限公司 Multibreak face reducing tunnel lining platform truck of large -span
CN107100647A (en) * 2017-05-26 2017-08-29 中铁隧道集团二处有限公司 A kind of trolley formwork and its assembling and construction method of the gradual change of tunnel arch wall lining section

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Publication number Priority date Publication date Assignee Title
CN102022123A (en) * 2009-09-09 2011-04-20 中交隧道工程局有限公司 Integral lining method for tunnel with altered diameter by model board trolley
CN201574763U (en) * 2009-12-10 2010-09-08 吴真珍 Hydraulic lining trolley
CN203321538U (en) * 2013-06-25 2013-12-04 中铁十六局集团地铁工程有限公司 Variable-cross-section tunnel lining mold
CN103806924A (en) * 2014-03-07 2014-05-21 陕西理工学院 Steel form carrier variable camber gear for concrete lining for cave depot
CN104763444A (en) * 2015-02-03 2015-07-08 四川省创力隧道机械设备有限公司 Adjustable hydraulic hammer rig for tunnel
CN104963699A (en) * 2015-07-01 2015-10-07 中国葛洲坝集团三峡建设工程有限公司 Modular steel form trolley
CN205370586U (en) * 2015-12-31 2016-07-06 中铁十八局集团第三工程有限公司 Multibreak face reducing tunnel lining platform truck of large -span
CN107100647A (en) * 2017-05-26 2017-08-29 中铁隧道集团二处有限公司 A kind of trolley formwork and its assembling and construction method of the gradual change of tunnel arch wall lining section

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110107314A (en) * 2019-04-30 2019-08-09 中国葛洲坝集团第二工程有限公司 Transition region of tunnel lining construction method
CN110242328A (en) * 2019-06-24 2019-09-17 中铁隧道局集团有限公司 A kind of Tunnel Second Lining Construction method
CN110273695A (en) * 2019-07-13 2019-09-24 中国三冶集团有限公司 A kind of Tunnel Second Lining formwork jumbo and its stage molding pouring procedure

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