CN109441480A - Row hole face gib construction after a kind of multiple-arch tunnel - Google Patents
Row hole face gib construction after a kind of multiple-arch tunnel Download PDFInfo
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- CN109441480A CN109441480A CN201811300722.3A CN201811300722A CN109441480A CN 109441480 A CN109441480 A CN 109441480A CN 201811300722 A CN201811300722 A CN 201811300722A CN 109441480 A CN109441480 A CN 109441480A
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- row hole
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- 238000010276 construction Methods 0.000 title claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 239000011435 rock Substances 0.000 claims abstract description 16
- 208000029152 Small face Diseases 0.000 claims description 20
- 238000009412 basement excavation Methods 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000011378 shotcrete Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/006—Lining anchored in the rock
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention puts forward row hole face gib construction after a kind of multiple-arch tunnel, pass through row cavity construction method and sequence of construction after changing, the disturbance frequency, range of disturbance, disturbance duration to the leading hole of construction molding is reduced or avoided effectively to control the disturbance that the rear row hole construction that leading hole generally occurs serves as a contrast branch at the beginning of leading hole and two, make mechanical character of surrounding rock closer to design conditions, ensure that leading hole is just propped up and secondary lining quality meets design and code requirement.Simultaneously, Mechanical Crushing is used close to the region leading hole Chu Zhi, Mechanical Crushing is effectively guaranteed leading hole, and just branch is not damaged, and can effectively control surpassing, owing to dig for the cubic metre of earth and stone, it is ensured that the rear first branch steel arch-shelf in row hole can strictly press design and code requirement, and just branch steel arch-shelf specification be connect with leading hole.While row hole construction quality after ensuring, complete leading hole construction quality is not influenced, so that tunnel total quality is ensured.
Description
Technical field
The invention discloses face gib constructions in row hole after a kind of multiple-arch tunnel, belong to tunnel construction technology
Field.
Background technique
As infrastructure construction paces are accelerated, the construction scale of highway went from strength to strength in recent years, and more high
Fast route selection is more unobstructed, then needs a large amount of bridge tunnel across deep valley and high mountain.
Multiple-arch tunnel has very big advantage, but multiple-arch tunnel span is big, structure is complicated, working procedure is various, skill of constructing
Art is complicated, has very high requirement to the design of structure design of tunnel and arrangement and method for construction.
Currently, multiple-arch tunnel mostly uses three pilot tunnels or middle drift advanced construction method construction, but either three-drift method is still
The advanced construction method of middle drift, has working procedure various and there are processes to interfere between each other, gib causes to dismantle more
The problems such as construction volume is larger, multiple-arch tunnel waterproof effect is poor, and the construction period is longer.
Summary of the invention
The present invention passes through in view of the above-mentioned problems, propose row hole face gib construction after a kind of multiple-arch tunnel
Row cavity construction method and sequence of construction after change, be reduced or avoided the disturbance frequency to the leading hole of construction molding, range of disturbance,
Disturbance duration effectively controls the secondary lining and inverted arch cracking phenomena that leading hole generally occurs, it is ensured that multiple-arch tunnel engineering
Quality and safe construction.
Technical solution of the present invention specifically:
1, tunnel piercing is divided into blast working region and Mechanical Crushing region along longitudinal direction by rear row hole construction face,
Mechanical Crushing is taken close to leading hole side, is excavated close to Hou Hangdong country rock side and uses Mechanical Crushing；
2, when leading hole is constructed, first construction geology is poor, buried depth is a shallower width；The width tunnel for completing first to construct passes through
Row hole is constructed after logical, Second Lining Construction, then after starting；
3, the large and small face mistake step of Hou Hangdong is excavated；The big face in row hole excavates afterwards, small face excavates, a left side of getting out of a predicament or an embarrassing situation
The every cyclic advance of excavation that abutment wall excavates and inverted arch excavates controls in corresponding range；
4, V grade of country rock, which just props up, closely follows face；
5, the construction time of V grade of country rock two lining must carry out in time after country rock and bolt-spary supports stabilization；
6, gib and tunnel shaped steel arch connect, and longitudinal pitch is consistent with tunnel arch；
7, grouting pipe is arranged in big face A unit bracing members and the unit bracing members junction L；
8, after being located at row hole and leading hole steel arch-shelf E joint, add one between leading hole steel arch-shelf
Longitudinally connected steel plate, and with the small face steel arch-shelf firm welding in rear row hole；
9, carry out synchronous with small face preliminary bracing is removed in gib.
The beneficial effect of construction of the invention is that when rear row hole is constructed, surrouding rock stress is effectively transmitted in gib,
The construction safety in row hole after ensure that ensures that safety is raw to largely reduce the construction safety risk of entire multiple-arch tunnel
It produces, improves construction efficiency, saved engineering cost.
Detailed description of the invention
Fig. 1 is the rear row hole face gib construction schematic diagram of construction of the invention.
Fig. 2 is the working procedure schematic diagram of construction of the invention.
In figure:
Greek alphabet indicates sequence of excavation: the I-rear big face in row hole excavates, the rear big face in row hole (upper, middle step),
Gib preliminary bracing；The small face of II-Hou Hangdong excavates, the small face preliminary bracing of Hou Hangdong；III-Hou Hangdong gets out of a predicament or an embarrassing situation
It excavates, Hou Hangdong gets out of a predicament or an embarrassing situation preliminary bracing；IV-Hou Hangdong get out of a predicament or an embarrassing situation RightWall excavation, rear row hole inverted arch preliminary bracing；V-pours
Row hole inverted arch secondary lining, inverted arch filling after building；VI-laying waterproof layer, pour after row hole arch wall secondary lining；
Arabic numerals 1,2,3,4,5,6 indicate liner supporting sequence；
English alphabet A, B, D, E, F, G, K, L, M indicate unit.
Specific embodiment
The specific embodiment of 1,2 pair of construction of the invention is described in detail with reference to the accompanying drawing.
Combined with Figure 1 and Figure 2, construction and excavation, supporting, pour, the sequence of lining cutting, filling etc. are as follows:
I: the rear big face excavation-rear big face in row hole in row hole (upper, middle step)-gib preliminary bracing；
II: the Hou Hangdong small small face preliminary bracing of face excavation-Hou Hangdong；
III: the Hou Hangdong excavation-Hou Hangdong that gets out of a predicament or an embarrassing situation gets out of a predicament or an embarrassing situation preliminary bracing；
IV: Hou Hangdong RightWall of getting out of a predicament or an embarrassing situation excavates-rear row hole inverted arch preliminary bracing；
V: row hole inverted arch secondary lining-inverted arch filling after pouring；
VI: being laid with row hole arch wall secondary lining after waterproof layer-pours；
Arabic numerals 1,2,3,4,5,6 in figure indicate the sequence of liner supporting formula；
English alphabet A, B, D, E, F, G, K, L, M in figure indicate supporting unit.
Construction of the invention is as follows:
1, tunnel piercing is divided into blast working region and Mechanical Crushing region along longitudinal direction by rear row hole construction face.
Close to leading hole side take Mechanical Crushing can reduce the shaking force that the quick-fried bursting work of tunnel piercing generates leading hole two is served as a contrast and
The disturbance of inverted arch destroys.Meanwhile being excavated close to Hou Hangdong country rock side and using Mechanical Crushing, it can effectively control super, deficient
It digs, it is often more important that protection of the effective control to the first branch steel arch-shelf in leading hole, it is ensured that just branch steel arch-shelf can be quasi- in rear row hole
Really, what is standardized connect with branch steel arch-shelf at the beginning of leading hole.
2, when leading hole is constructed, first construction geology is poor, buried depth is a shallower width；The width tunnel for completing first to construct passes through
Row hole is constructed after logical, Second Lining Construction, then after starting；
3, the large and small face mistake step of Hou Hangdong is excavated, 10~15m of wrong step-length degree；The big face in row hole excavates every circulation afterwards
Drilling depth is controlled in 0.6~1.2m；Small face excavates every cyclic advance length and is not greater than 0.6m；Leftwall of getting out of a predicament or an embarrassing situation excavates every
Cyclic advance length is not more than 1.8m；Inverted arch excavates every cyclic advance and is not more than 3m；
4, V grade of country rock, which just props up, closely follows face, and inverted arch is not more than 30m away from big face excavation face distance；Apart from small area
Face is not more than 20m；
5, the construction time of V grade of country rock two lining must carry out in time after country rock and bolt-spary supports stabilization, and distance is big
Face excavation face is not more than 50m, is not more than 40m apart from small face excavation face；
6, gib and tunnel shaped steel arch connect, and longitudinal pitch is consistent with tunnel arch；It is mono- that L is arranged in gib
Member, M unit, wherein L unit is arc, and just branch A unit arch is connect upper segmental arc with rear row hole, vertical section and gib M
Unit connection, is connect by arc unit bracing members and a vertical cell bracing members with the rear permanent bracing members in row hole；Unit it
Between to be bolted；15 × 15cm of reinforced mesh is arranged in preliminary bracing, and is close to gunite concrete face and hangs；Adjacent steel arch-shelf
Between connected with longitudinal reinforcement, circumferential spacing 1m, the longitudinal upper arranged crosswise in outside along steel arch-shelf；
7,2 grouting pipes are arranged in big face A unit bracing members and the unit bracing members junction L, are between each other
90 °, every conduit and tunnel piercing direction angle at 45 °；
8, after being located at row hole and leading hole steel arch-shelf E joint, add one between leading hole steel arch-shelf
Longitudinally connected steel plate, and with the small face steel arch-shelf firm welding in rear row hole；
9, carry out synchronous with small face preliminary bracing is removed in gib.
The beneficial effect of construction of the invention is that when rear row hole is constructed, gib effectively delivers country rock and answers
Power, the construction safety in row hole after ensure that ensure to largely reduce the construction safety risk of entire multiple-arch tunnel
Safety in production, improves construction efficiency, has saved engineering cost.
The present invention has effectively prevented disturbance of the rear row hole construction to branch at the beginning of leading hole and two linings, makes mechanical character of surrounding rock more
Close to design conditions, it ensure that leading hole is just propped up and secondary lining quality meets design and code requirement.Meanwhile it just being propped up close to leading hole
Region uses Mechanical Crushing, and Mechanical Crushing is effectively guaranteed leading hole, and just branch is not damaged, and can effectively control the cubic metre of earth and stone
Surpass, owe to dig, it is ensured that the rear first branch steel arch-shelf in row hole can strictly press design and code requirement and leading hole just branch steel arch-shelf specification company
It connects.While row hole construction quality after ensuring, complete leading hole construction quality is not influenced, so that tunnel total quality is protected
Barrier.
Present invention process is simple, each process can parallel construction, Engineering Quality Control is higher, construction safety protection compared with
It is good, it can effectively control tunnel seepage in underground.
Scene manpower, machinery, the utilization of material resources and working face of the invention are effectively connected, mutual shadow between process
Sound is smaller, ensures project progress and social benefit.
Claims (4)
1. face gib construction in row hole after a kind of multiple-arch tunnel, which is characterized in that the construction is as follows:
1) tunnel piercing is divided into blast working region and Mechanical Crushing region along longitudinal direction by rear row hole construction face, close to
Mechanical Crushing is taken in leading hole side, excavates close to Hou Hangdong country rock side and uses Mechanical Crushing；
2) when leading hole is constructed, first construction geology is poor, buried depth is a shallower width；Complete the width tunnel holing through first constructed, two
Row hole is constructed after secondary lining construction, then after starting；
3) the large and small face mistake step of Hou Hangdong is excavated；The big face in row hole excavates afterwards, small face excavates, leftwall of getting out of a predicament or an embarrassing situation
It excavates and what inverted arch excavated excavates every cyclic advance control in corresponding range；
4) V grade of country rock, which just props up, closely follows face, and inverted arch is not more than 30m away from big face excavation face distance；Not apart from small face
Greater than 20m；
5) construction time of V grade of country rock two lining is little apart from big face excavation face after country rock and bolt-spary supports stabilization
In 50m, it is not more than 40m apart from small face excavation face；
6) gib is connect with tunnel shaped steel arch, and longitudinal pitch is consistent with tunnel arch；It is mono- that L unit, M is arranged in gib
Member, to be bolted between unit；15 × 15cm of reinforced mesh is arranged in preliminary bracing, and is close to gunite concrete face and hangs；Phase
It is connected between adjacent steel arch-shelf with longitudinal reinforcement, circumferential spacing 1m, the longitudinal upper arranged crosswise in outside along steelframe；
7) grouting pipe is arranged in big face A unit bracing members and L unit bracing members junction；
8) after being located at row hole and leading hole steel arch-shelf E joint, a longitudinal direction is added between leading hole steel arch-shelf
Junction steel plate, and welded with the small face steel arch-shelf in rear row hole；
9) carry out synchronous with small face preliminary bracing is removed in gib.
2. construction according to claim 1, it is characterised in that:
The L unit of gib setting is arc, and just branch A unit arch is connect upper segmental arc with rear row hole, vertical section and
The connection of gib M unit is connected by the permanent bracing members of arc unit bracing members and a vertical cell bracing members and rear row hole
It connects.
3. any construction according to claims 1 to 2, it is characterised in that:
The wrong step-length degree that the large and small face mistake step in row hole is excavated after described: 10~15m；
The big face in row hole excavates every cyclic advance: 0.6~1.2m afterwards；
Small face excavates every cyclic advance: being not more than 0.6m；
Leftwall of getting out of a predicament or an embarrassing situation excavates every cyclic advance: being not more than 1.8m；
Inverted arch excavates every cyclic advance: being not more than 3m.
4. any construction according to claims 1 to 2, it is characterised in that:
The grouting pipe is 2, is between each other in 90 °, every conduit and tunnel piercing direction angle at 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300722.3A CN109441480B (en) | 2018-11-02 | 2018-11-02 | Temporary supporting construction method for backward tunnel face of multi-arch tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300722.3A CN109441480B (en) | 2018-11-02 | 2018-11-02 | Temporary supporting construction method for backward tunnel face of multi-arch tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441480A true CN109441480A (en) | 2019-03-08 |
| CN109441480B CN109441480B (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811300722.3A Active CN109441480B (en) | 2018-11-02 | 2018-11-02 | Temporary supporting construction method for backward tunnel face of multi-arch tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469345A (en) * | 2019-08-14 | 2019-11-19 | 中铁六局集团太原铁路建设有限公司 | High water level shallow depth loess tunnels control settlement restrains construction method |
| CN113202501A (en) * | 2021-04-09 | 2021-08-03 | 中铁六局集团有限公司 | Four-step excavation construction method for displacement movable fracture zone |
| CN114152159A (en) * | 2021-12-09 | 2022-03-08 | 中国葛洲坝集团国际工程有限公司 | Full-section synchronous blasting tunneling construction method for side wall on reserved side of large-section tunnel crown arch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465404A (en) * | 1981-07-14 | 1984-08-14 | Bochumer Eisenhuette Heintzmann Gmbh & Co Kg | Wall element for an underground gallery |
| CN102373930A (en) * | 2011-09-23 | 2012-03-14 | 中南大学 | Rapid construction method of weak surrounding rock large-section multi-arc tunnel |
| CN203130086U (en) * | 2013-01-05 | 2013-08-14 | 长安大学 | Excavating structure without pilot tunnel of double-linked-arch tunnel |
| CN203685204U (en) * | 2013-12-20 | 2014-07-02 | 中铁二院重庆勘察设计研究院有限责任公司 | Spraying building concealed irregular middle wall combined type multiple-arch tunnel lining structure |
| CN104832181A (en) * | 2015-05-14 | 2015-08-12 | 中铁十九局集团第一工程有限公司 | Dovetail section tunnel construction process |
| CN207761668U (en) * | 2017-12-20 | 2018-08-24 | 云南省建设投资控股集团有限公司 | A kind of supporting construction of novel tunnel |
-
2018
- 2018-11-02 CN CN201811300722.3A patent/CN109441480B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4465404A (en) * | 1981-07-14 | 1984-08-14 | Bochumer Eisenhuette Heintzmann Gmbh & Co Kg | Wall element for an underground gallery |
| CN102373930A (en) * | 2011-09-23 | 2012-03-14 | 中南大学 | Rapid construction method of weak surrounding rock large-section multi-arc tunnel |
| CN203130086U (en) * | 2013-01-05 | 2013-08-14 | 长安大学 | Excavating structure without pilot tunnel of double-linked-arch tunnel |
| CN203685204U (en) * | 2013-12-20 | 2014-07-02 | 中铁二院重庆勘察设计研究院有限责任公司 | Spraying building concealed irregular middle wall combined type multiple-arch tunnel lining structure |
| CN104832181A (en) * | 2015-05-14 | 2015-08-12 | 中铁十九局集团第一工程有限公司 | Dovetail section tunnel construction process |
| CN207761668U (en) * | 2017-12-20 | 2018-08-24 | 云南省建设投资控股集团有限公司 | A kind of supporting construction of novel tunnel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469345A (en) * | 2019-08-14 | 2019-11-19 | 中铁六局集团太原铁路建设有限公司 | High water level shallow depth loess tunnels control settlement restrains construction method |
| CN110469345B (en) * | 2019-08-14 | 2020-09-18 | 中铁六局集团太原铁路建设有限公司 | Sedimentation-control convergence construction method for high-water-level shallow-buried loess tunnel |
| CN113202501A (en) * | 2021-04-09 | 2021-08-03 | 中铁六局集团有限公司 | Four-step excavation construction method for displacement movable fracture zone |
| CN113202501B (en) * | 2021-04-09 | 2023-11-24 | 中铁六局集团有限公司 | Four-step excavation construction method for movable displacement fracture zone |
| CN114152159A (en) * | 2021-12-09 | 2022-03-08 | 中国葛洲坝集团国际工程有限公司 | Full-section synchronous blasting tunneling construction method for side wall on reserved side of large-section tunnel crown arch |
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| Publication number | Publication date |
|---|---|
| CN109441480B (en) | 2020-06-09 |
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