CN111305869A - Prefabricated lining structure of arch wall and construction method - Google Patents
Prefabricated lining structure of arch wall and construction method Download PDFInfo
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- CN111305869A CN111305869A CN202010076370.9A CN202010076370A CN111305869A CN 111305869 A CN111305869 A CN 111305869A CN 202010076370 A CN202010076370 A CN 202010076370A CN 111305869 A CN111305869 A CN 111305869A
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- arch wall
- arch
- secondary lining
- lining
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000009749 continuous casting Methods 0.000 claims abstract description 4
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 14
- 230000005641 tunneling Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 8
- 238000009418 renovation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 9
- 239000004567 concrete Substances 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
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- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- 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
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- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A prefabricated lining structure of an arch wall and a construction method are provided, which aim to effectively ensure the quality of an arch lining while improving the industrialization degree and the construction efficiency of the mine tunnel construction, solve the lining quality defect caused by difficult cast-in-place control, ensure the safety of tunnel operation and reduce the investment of renovation in the operation period. The primary support structure, the waterproof and drainage system and the secondary lining structure are arranged from inside to outside, and the secondary lining structure is composed of an inverted arch and an arch wall secondary lining structure. The inverted arch is formed by continuous casting in a segmented mode along the extending direction of the tunnel; the arch wall secondary lining structure is a reinforced concrete prefabricated structure and is formed by longitudinally assembling arch wall secondary lining sections, the two circumferential ends of the arch wall secondary lining sections are in lap joint with the two circumferential ends of an inverted arch, and each arch wall secondary lining section is formed by annularly assembling at least three arch wall secondary lining building blocks.
Description
Technical Field
The invention relates to a tunnel lining structure, in particular to an assembled tunnel lining structure adopting prefabricated components in an arch wall range and a construction method thereof.
Background
In recent years, the railway construction of China is rapidly developed, and particularly the construction of high-speed railways enters an explosive growth stage. With the rapid increase of railway operation mileage and the increase of tunnel ratio caused by the improvement of line standards, the number and scale of railway tunnels also tend to increase rapidly, and particularly in the southwest mountainous region, the occupation ratio of the tunnels in railway infrastructure projects is extremely high.
In the current mine method tunnel construction process, due to various process qualities and other factors, quality defects of primary support or lining back void, insufficient thickness of secondary lining, cracks, water leakage, construction joint dislocation, uneven or insufficient concrete strength and the like exist in partial sections, and the quality problems are particularly prominent in tunnel arch parts and bring great hidden danger to railway operation safety. In recent years, a plurality of diseases caused by tunnel lining quality defects occur to a plurality of opened high-speed railways during operation, so that accidents of speed reduction operation and even line interruption are caused, high attention is paid to all parties, and huge manpower and material resources are invested for renovation.
The tunnel lining constructed by the traditional mine method generally adopts a cast-in-place structure form with a curved wall and an inverted arch. When in construction, reinforcing steel bars are bound at the inverted arch part and concrete is poured, side wall joint reinforcing steel bars are reserved at two sides when the inverted arch is poured, after the inverted arch is constructed for a certain step distance in the direction of the tunnel face, the side wall and the arch part are bound by using a lining template trolley and the concrete is poured integrally, and side wall feet are connected with the inverted arch through the joint reinforcing steel bars at two sides of the inverted arch to form a whole, so that the whole lining is formed by pouring in situ. The biggest defects of the traditional tunnel lining construction are as follows: because the lining is cast in situ, the pouring process is of great importance to the lining quality, however, in actual construction, because the binding of structural steel bars is not in place, the construction process problems of mould entering, vibration, concrete pouring difficulty and the like are easily caused, the conditions of honeycomb, pitted surface, insufficient thickness, non-compact pouring vibration and the like of the concrete lining are easily caused, the cracking of the lining is even peeled off and the block is dropped in the operation process, the driving safety of the line is threatened to a great extent, and the conditions are particularly serious at the arch part of the lining and have the greatest threat to the driving safety.
Therefore, the tunnel lining structure constructed by the traditional mining method is optimized, the problem of quality defect of the tunnel lining is fundamentally solved, the tunnel engineering quality is improved, and the driving safety in the tunnel is fully ensured, so that the urgent need of tunnel construction is met.
Disclosure of Invention
The invention aims to provide an arch wall prefabricated lining structure, which aims to improve the industrialization degree and the construction efficiency of the mine tunnel construction, effectively ensure the quality of arch lining, solve the lining quality defect caused by difficult cast-in-place control, ensure the safety of tunnel operation and reduce the investment of regulation in the operation period.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention discloses an arch wall prefabricated lining structure, which comprises a primary supporting structure, a waterproof and drainage system and a secondary lining structure which are arranged from inside to outside, wherein the secondary lining structure consists of an inverted arch and an arch wall secondary lining structure, and is characterized in that: the inverted arch is formed by continuous casting in a segmented mode along the extending direction of the tunnel; the secondary lining structure of the arch wall is a reinforced concrete prefabricated structure and is formed by longitudinally assembling arch wall secondary lining sections, the two circumferential ends of the arch wall secondary lining sections are in lap joint with the two circumferential ends of an inverted arch, and each arch wall secondary lining section is formed by annularly assembling at least three arch wall secondary lining building blocks.
Another technical problem to be solved by the invention is to provide a construction method of the arch wall prefabricated lining structure. The method comprises the following steps:
① excavating and tunneling the tunnel to the tunnel face;
② constructing the primary supporting structure in time;
③ is used as a waterproof and drainage system;
④ lagging the face of the palm for a certain distance to make an inverted arch;
⑤ lagging the inverted arch for a certain distance to be used as an inverted arch filling layer;
⑥ stopping tunneling after the tunnel face is tunneled to a preset position, and waiting for the primary support structure, the waterproof and drainage system, the inverted arch and the inverted arch filling layer to be applied to the position and reach the corresponding design strength;
⑦ laying walking rails of arch wall secondary lining trolley;
⑧ assembling secondary lining segments of the arch wall at the opening;
⑨ transporting an arch wall secondary lining segment from the opening to the tunnel face position by using an arch wall secondary lining trolley and completing the assembly with the inverted arch;
⑩ repeating steps ⑧ and ⑨, assembling next arch wall secondary lining segment from the tunnel face to the opening, assembling and connecting the arch wall secondary lining segments into a whole by using longitudinal connecting bolts until the opening is assembled, and completing the assembling construction of the arch wall secondary lining.
The invention has the advantages that the arch wall lining adopts prefabricated assembly parts under the advantage of fully exerting the flexibility of the mine tunnel construction, can be produced in batches in a factory, and then is transported to the site to be mechanically assembled, thereby improving the site labor condition, saving materials and improving the mechanical level and labor efficiency of the tunnel construction. Meanwhile, as the arch wall lining is prefabricated in an industrial mode, the structural quality can be effectively guaranteed, the lining quality defect caused by the cast-in-place process problem is avoided, the arch lining disease in the operation process is avoided, and the driving safety is guaranteed.
Drawings
The specification includes the following ten figures:
FIG. 1 is a cross-sectional view of a prefabricated lining structure for an arch wall according to the present invention;
FIGS. 2 and 3 are schematic views illustrating the connection of the inclined bolts of the longitudinal joint portions between the arch wall prefabricated lining blocks in the arch wall prefabricated lining structure according to the present invention;
FIGS. 4 and 5 are schematic views illustrating the coupling of the bent bolts of the longitudinal joint portions between the arch wall prefabricated lining blocks in the arch wall prefabricated lining structure according to the present invention;
fig. 6 is a schematic view of a connection portion between an arch wall prefabricated lining block and an inverted arch in the arch wall prefabricated lining structure of the present invention;
FIG. 7 is a schematic view of the assembly of the arch wall prefabricated lining blocks along the longitudinal through seams of the tunnel in the arch wall prefabricated lining structure of the invention;
FIG. 8 is a schematic view of the stagger joint assembly of the arch wall prefabricated lining blocks along the longitudinal direction of the tunnel in the arch wall prefabricated lining structure of the invention;
FIGS. 9 and 10 are schematic views showing the bolted connection of the circumferential joints between the prefabricated lining blocks of the arch wall in the prefabricated lining structure of the arch wall according to the present invention;
fig. 11 to 18 are exploded schematic views illustrating construction steps of a prefabricated lining structure of an arch wall according to the present invention.
The figures show the parts, components and corresponding references: the building block comprises a primary supporting structure 10, a waterproof and drainage system 20, an arch wall secondary lining building block 30, an inverted arch 31, an inverted arch filling layer 31a, a circumferential connecting bolt 41, a circumferential connecting hole sealing ring 42, a first circumferential waterproof sealing gasket 32, a second circumferential waterproof sealing gasket 33, a longitudinal connecting bolt 51, a longitudinal connecting hole sealing gasket 52, a longitudinal waterproof sealing gasket 53 and a palm surface D.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1, the arch wall prefabricated lining structure of the present invention includes a primary supporting structure 10, a waterproof and drainage system 20 and a secondary lining structure arranged from inside to outside, wherein the secondary lining structure is composed of an inverted arch 31 and an arch wall secondary lining structure, and is characterized in that: the inverted arch 31 is formed by continuous casting in sections along the extending direction of the tunnel; the secondary lining structure of the arch wall is a reinforced concrete prefabricated structure and is formed by longitudinally assembling secondary lining sections of the arch wall, the two circumferential ends of the secondary lining sections of the arch wall are in lap joint with the two circumferential ends of an inverted arch 31, and each secondary lining section of the arch wall is formed by annularly assembling at least three secondary lining building blocks 30 of the arch wall. Under the advantage of fully exerting the flexibility of the tunnel construction by the mining method, the arch wall lining adopts prefabricated assembly parts, can be produced in batches in a factory, and then is transported to the site to be assembled mechanically, so that the site labor condition is improved, the material is saved, and the mechanization level and the labor efficiency of the tunnel construction are improved. Meanwhile, as the arch wall lining is prefabricated in a factory manner, the structural quality can be effectively ensured, the lining quality defect caused by the cast-in-place process problem is avoided, the arch lining damage in the operation process is avoided, and the driving safety is ensured.
Referring to fig. 6, the circumferential end of the inverted arch 31 is a concave arc surface, the circumferential end of the arch wall secondary lining building block 30 which forms a lap joint with the inverted arch surface is a convex arc surface which is attached to the concave arc surface, and a second circumferential waterproof gasket 33 which extends longitudinally is arranged between the pair of concave arc surfaces and the convex arc surface.
Referring to fig. 7 and 8, in the arch wall secondary lining structure, the arch wall secondary lining building blocks 30 of each adjacent arch wall secondary lining segment are assembled according to through joints or staggered joints.
Referring to fig. 2 to 5, in the arch wall secondary lining segment, the circumferential contact surfaces of adjacent arch wall secondary lining blocks 30 are corresponding planes or arc surfaces, and two adjacent arch wall secondary lining blocks 30 are connected into a whole by a circumferential connecting bolt 41 penetrating through the circumferential connecting hole. The first annular waterproof sealing gasket 32 extending longitudinally is arranged on the annular contact surface, and annular connecting hole sealing rings 52 are arranged at two ends of the annular connecting hole. The circumferential connecting bolt 41 may be an arc bolt or a straight bolt
Referring to fig. 9 and 10, in the arch wall secondary lining segment, two adjacent arch wall secondary lining segments are integrally assembled by a longitudinal connecting bolt 51 penetrating through a longitudinal connecting hole of two adjacent arch wall secondary lining blocks 30. The longitudinal contact surfaces of the two adjacent arch wall secondary lining building blocks 30 are provided with longitudinal waterproof sealing gaskets 53 which extend circumferentially, and the outer ends or two ends of the longitudinal connecting bolts 51 are provided with longitudinal connecting hole sealing rings 52.
Referring to fig. 11 to 18, the construction method of the arch wall prefabricated lining structure of the present invention includes the following steps:
① excavating and tunneling the tunnel to a tunnel face D;
② constructing the primary support structure 10 in time;
③ as a waterproof system 20;
④ lagging the tunnel face D by a certain distance is made into an inverted arch 31;
⑤ forming an inverted arch filling layer 31a at a distance behind the inverted arch 31;
⑥, stopping tunneling after the tunnel face D tunnels to a preset position, and applying the primary supporting structure 10, the waterproof and drainage system 20, the inverted arch 31 and the inverted arch filling layer 31a to the position and achieving corresponding design strength;
⑦ laying walking rails of arch wall secondary lining trolley;
⑧ assembling secondary lining segments of the arch wall at the opening;
⑨, an arch wall secondary lining segment is transported to the tunnel face position from the tunnel portal by using an arch wall secondary lining trolley and is assembled with the inverted arch 31;
⑩ repeating steps ⑧ and ⑨, assembling the next arch wall secondary lining segment from the tunnel face D to the opening, and connecting the arch wall secondary lining segments into a whole by using the longitudinal connecting bolt 51 until the opening is assembled, thus completing the assembling construction of the arch wall secondary lining.
The foregoing merely illustrates the principles of the present invention for an arched wall lining structure and method of construction and is not intended to limit the invention to the exact construction and application illustrated and described, and accordingly, all modifications and equivalents that may be resorted to are intended to fall within the scope of the invention.
Claims (8)
1. The utility model provides a prefabricated lining cutting structure of arch wall, includes by interior and outer primary support structure 10, waterproof drainage system 20 and the secondary lining cutting structure that sets up, the secondary lining cutting structure comprises inverted arch 31 and arch wall secondary lining cutting structure, characterized by: the inverted arch (31) is formed by continuous casting in a segmented mode along the extending direction of the tunnel; the arch wall secondary lining structure is a reinforced concrete prefabricated structure and is formed by longitudinally assembling arch wall secondary lining sections, the two circumferential ends of the arch wall secondary lining sections are in lap joint with the two circumferential ends of an inverted arch (31), and each arch wall secondary lining section is formed by annularly assembling at least three arch wall secondary lining building blocks (30).
2. An arch wall precast lining structure as set forth in claim 1, wherein: the hoop end of the inverted arch (31) is a concave cambered surface, the hoop end of the arch wall secondary lining building block (30) which is in lap joint with the inverted arch is a convex cambered surface which is attached to the concave cambered surface, and a second circumferential waterproof sealing gasket (33) which extends longitudinally is arranged between the pair of concave cambered surfaces and the convex cambered surface.
3. An arch wall precast lining structure as set forth in claim 1, wherein: in the arch wall secondary lining structure, the arch wall secondary lining building blocks (30) of each adjacent arch wall secondary lining section are assembled according to through joints or staggered joints.
4. An arch wall precast lining structure as set forth in claim 1, wherein: in the arch wall secondary lining segment, the circumferential contact surfaces of adjacent arch wall secondary lining building blocks (30) are corresponding planes or arc surfaces, and two adjacent arch wall secondary lining building blocks (30) are connected into a whole by a circumferential connecting bolt (41) penetrating through circumferential connecting holes.
5. An arch wall precast lining structure as set forth in claim 4, wherein: the annular contact surface is provided with a first annular waterproof sealing gasket (32) extending longitudinally, and two ends of the annular connecting hole are provided with annular connecting hole sealing rings (52).
6. An arch wall precast lining structure as set forth in claim 4, wherein: in the arch wall secondary lining sections, the two adjacent arch wall secondary lining sections are assembled into a whole by a longitudinal connecting bolt (51) penetrating through a longitudinal connecting hole of two adjacent arch wall secondary lining building blocks (30).
7. An arch wall precast lining structure as set forth in claim 6, wherein: and longitudinal waterproof sealing gaskets (53) which extend in the circumferential direction are arranged on the longitudinal contact surfaces of the two adjacent arch wall secondary lining building blocks (30), and longitudinal connecting hole sealing rings (52) are arranged at the outer ends or two ends of the longitudinal connecting bolts (51).
8. A construction method of an arch wall precast lining structure as claimed in any one of claims 1 to 7, comprising the steps of:
① tunneling to the tunnel face (D);
② constructing the primary supporting structure (10) in time;
③ as a water-proof and drainage system (20);
④ lagging behind the tunnel face (D) for a certain distance to form an inverted arch (31);
⑤ forming an inverted arch filling layer (31a) at a certain distance behind the inverted arch (31);
⑥, stopping tunneling after the tunnel face (D) tunnels to a preset position, and applying the primary supporting structure (10), the waterproof and drainage system (20), the inverted arch (31) and the inverted arch filling layer (31a) to the position and achieving corresponding design strength;
⑦ laying walking rails of arch wall secondary lining trolley;
⑧ assembling secondary lining segments of the arch wall at the opening;
⑨, an arch wall secondary lining segment is transported to the tunnel face position from the tunnel portal by using an arch wall secondary lining trolley and is assembled with the inverted arch (31);
⑩ repeating steps ⑧ and ⑨, assembling the next arch wall secondary lining segment from the tunnel face (D) to the opening direction, and assembling and connecting the arch wall secondary lining segments into a whole by using a longitudinal connecting bolt (51) until the opening is assembled, thus completing the assembling construction of the arch wall secondary lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010076370.9A CN111305869A (en) | 2020-01-23 | 2020-01-23 | Prefabricated lining structure of arch wall and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010076370.9A CN111305869A (en) | 2020-01-23 | 2020-01-23 | Prefabricated lining structure of arch wall and construction method |
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| CN111305869A true CN111305869A (en) | 2020-06-19 |
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| CN202010076370.9A Pending CN111305869A (en) | 2020-01-23 | 2020-01-23 | Prefabricated lining structure of arch wall and construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852519A (en) * | 2020-07-15 | 2020-10-30 | 中国水利水电第四工程局有限公司 | Method for installing novel inverted arch precast block capable of improving water resistance between joints |
| CN112253172A (en) * | 2020-10-16 | 2021-01-22 | 中铁第四勘察设计院集团有限公司 | Tunnel bottom lining structure with tie beam and construction method thereof |
| CN113153353A (en) * | 2021-04-15 | 2021-07-23 | 华能煤炭技术研究有限公司 | Roadway support structure in weak rock stratum and support method |
| CN113294175A (en) * | 2021-06-03 | 2021-08-24 | 中国建筑股份有限公司 | Construction method of tunnel secondary lining structure and tunnel secondary lining structure |
| CN114753860A (en) * | 2022-05-17 | 2022-07-15 | 中铁第一勘察设计院集团有限公司 | Prefabricated and cast-in-place combined drilling and blasting tunnel lining structure and construction method thereof |
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| CN112253172A (en) * | 2020-10-16 | 2021-01-22 | 中铁第四勘察设计院集团有限公司 | Tunnel bottom lining structure with tie beam and construction method thereof |
| CN113153353A (en) * | 2021-04-15 | 2021-07-23 | 华能煤炭技术研究有限公司 | Roadway support structure in weak rock stratum and support method |
| CN113294175A (en) * | 2021-06-03 | 2021-08-24 | 中国建筑股份有限公司 | Construction method of tunnel secondary lining structure and tunnel secondary lining structure |
| CN113294175B (en) * | 2021-06-03 | 2023-12-29 | 中国建筑股份有限公司 | Construction method of tunnel secondary lining structure and tunnel secondary lining structure |
| CN114753860A (en) * | 2022-05-17 | 2022-07-15 | 中铁第一勘察设计院集团有限公司 | Prefabricated and cast-in-place combined drilling and blasting tunnel lining structure and construction method thereof |
| CN114753860B (en) * | 2022-05-17 | 2024-07-16 | 中铁第一勘察设计院集团有限公司 | Prefabricated cast-in-situ combined drilling and blasting tunnel combined lining structure and construction method thereof |
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