CN109882205A - It is a kind of to pass through large-scale suspention backfill structure and construction method without filling solution cavity tunnel - Google Patents
It is a kind of to pass through large-scale suspention backfill structure and construction method without filling solution cavity tunnel Download PDFInfo
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- CN109882205A CN109882205A CN201910246578.8A CN201910246578A CN109882205A CN 109882205 A CN109882205 A CN 109882205A CN 201910246578 A CN201910246578 A CN 201910246578A CN 109882205 A CN109882205 A CN 109882205A
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- 238000010276 construction Methods 0.000 title abstract description 8
- 239000010410 layer Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 239000011229 interlayer Substances 0.000 claims abstract description 12
- 230000006641 stabilisation Effects 0.000 claims abstract description 10
- 239000004567 concrete Substances 0.000 claims description 12
- 238000009415 formwork Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
It is a kind of to pass through large-scale suspention backfill structure and construction method without filling solution cavity tunnel, substantially to reduce time filler weight for directly acting on tunnel lining structure vault, it is ensured that tunnel-liner is unlikely to blocked up and reduces economy.Including the lightweight backfill material being filled between tunnel lining structure and solution cavity wall in large-scale cavity as falling rocks buffer layer.Vertically interval setting loading plate, each loading plate are fixed on solution cavity wall roof stabilisation rock mass by the suspension of spaced suspension element in the large size cavity.The periphery of each loading plate is mounted on solution cavity wall, and large-scale cavity is from top to bottom separated to form upper cavity, interlayer cavity and lower cavity on cross section.The lightweight backfill expects that from top to bottom successively hydraulic reclamation is in upper cavity, interlayer cavity and lower cavity.
Description
Technical field
The present invention relates to tunnels, in particular to a kind of to pass through the large-scale suspention backfill structure without filling solution cavity tunnel and construct
Method.
Background technique
The widely distributed karst landform in the area such as China Guangxi, Yunnan, Guizhou, stratum is with solubilities such as dolomite, limestones
Based on rock, in the case where flowing water acts on all the year round, easily dissolution, corrosion forms huge underground underground river, solution cavity etc., gives Tunnel Engineering
Construction brings huge challenge.
Currently, considering the weathering of hole wall, the influence of rockfall for passing through the large-scale tunnel without filling solution cavity, generally adopting
Active defense carried out to hole wall with Bolt net and jet, and in tunnel vault with backfill of blowing sand in upper plenum, as shock ply, played to falling
The buffer function of stone.
Tunnel top large area, large volume backfill increase the load of tunnel arch, and then have thickeied tunnel tunnel-liner knot
The thickness of structure.There is engineering that tunnel lining structure thickness is increased to nearly 2m thickness, amount of reinforcement due to backfilling sandy soil from tens centimeters
It is multiplied, engineering economy is poor.
Summary of the invention
The large-scale suspention backfill knot without filling solution cavity tunnel is passed through technical problem to be solved by the invention is to provide a kind of
Structure, with substantially reduce directly act on tunnel lining structure vault return filler weight, it is ensured that tunnel-liner be unlikely to it is blocked up and
Reduce economy.
The technical solution adopted by the present invention to solve the technical problems is as follows:
It is of the invention it is a kind of pass through the large-scale suspention without filling solution cavity tunnel and backfill structure, including be filled in tunnel-liner knot
Lightweight between structure and solution cavity wall in large-scale cavity as falling rocks buffer layer backfills material, it is characterized in that: edge in the large size cavity
Vertical interval setting loading plate, each loading plate are fixed on solution cavity wall roof stabilisation rock mass by the suspension of spaced suspension element
On；The periphery of each loading plate is mounted on solution cavity wall, on cross section from top to bottom by large-scale cavity be separated to form upper cavity,
Interlayer cavity and lower cavity；From top to bottom successively hydraulic reclamation is empty in upper cavity, interlayer cavity and lower part for the lightweight backfill material
It is intracavitary.
The suspension element includes wirerope and anchor pole, and anchor rod main body is squeezed into solution cavity wall roof stabilisation rock mass, exposure
Lower end is fixedly connected by connector with the upper end of wirerope；The wirerope vertically passes through each loading plate plate body, each loading plate plate face
Under on wirerope be fixedly mounted to loading plate formed support anchor head and anchorage.
Another technical problem to be solved by this invention is to provide a kind of above-mentioned large size of passing through without the outstanding of filling solution cavity tunnel
The construction method of backfill structure is hung, this method comprises the following steps:
1. carrying out tunnel excavation by normal procedure, and constructs and pass through the large-scale tunnel lining structure without filling solution cavity；
2. setting anchor pole on the solution cavity wall roof stabilisation rock mass in large-scale cavity, and wirerope is hung by connector；
3. formwork pours top layer's carrying board concrete in large-scale cavity, in plate face after concrete reaches design strength
Under in anchor head and anchorage are fixedly mounted on wirerope, backfill and expect to upper cavity hydraulic reclamation lightweight；
4. successively most formwork pours each layer loading plate between top layer's loading plate and lowest level loading plate, held to upper one layer
Support plate concrete reaches after design strength under plate face in anchor head and anchorage, the hydraulic reclamation into the interlayer cavity are fixedly mounted on wirerope
Lightweight backfill material；
5. formwork pours lowest level loading plate, in being fixedly mounted on wirerope under plate face after concrete reaches design strength
Anchor head and anchorage, to the lower part cavity hydraulic reclamation lightweight backfill are expected.
The invention has the advantages that vertical interval setting loading plate in large-scale cavity more than tunnel lining structure,
Each loading plate periphery is mounted on solution cavity wall, is split to solution cavity cavity, and each loading plate is fixed on molten by suspension element suspension
On the wall roof stabilisation rock mass of hole, the load of backfill material is successively transferred on solution cavity wall, substantially reduces and directly acts on tunnel lining
Build the load of structure vault, it is ensured that tunnel lining structure is unlikely to blocked up and reduces economy.
Detailed description of the invention
This specification includes following four width attached drawing:
Fig. 1 is a kind of cross-sectional view for passing through the large-scale suspention backfill structure without filling solution cavity tunnel of the present invention；
Fig. 2 is the enlarged drawing of the part A in Fig. 1；
Fig. 3 is a kind of skiagraph for passing through the large-scale suspention backfill structure without filling solution cavity tunnel of the present invention；
Fig. 4 is a kind of construction method schematic diagram for passing through the large-scale suspention backfill structure without filling solution cavity tunnel of the present invention.
Component and corresponding label be shown in figure: tunnel 10, tunnel lining structure 11, solution cavity wall 20, lightweight backfill material 21,
Loading plate 30, wirerope 31, anchor pole 32, connector 33, anchor head 34, anchorage 35, upper cavity I, interlayer cavity II, lower cavity
Ⅲ。
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Figure 1 and Figure 3, it is of the invention it is a kind of pass through the large-scale suspention without filling solution cavity tunnel and backfill structure, including fill out
Fill the lightweight backfill material 21 between tunnel lining structure 11 and solution cavity wall 20 in large-scale cavity as falling rocks buffer layer.It is described big
Vertically interval setting loading plate 30, each loading plate 30 are fixed on solution cavity wall by the suspension of spaced suspension element in type cavity
On 20 roof stabilisation rock mass.The periphery of each loading plate 30 is mounted on solution cavity wall 20, in the plane from top to bottom will be large-scale empty
Chamber is separated to form upper cavity I, interlayer cavity II and lower cavity III.Lightweight backfill material 21 from top to bottom successively hydraulic reclamation in
In upper cavity I, interlayer cavity II and lower cavity III.The load of backfill material is successively passed by loading plate 30, suspension element
It is handed on solution cavity wall, substantially reduces the load for directly acting on 11 vault of tunnel lining structure, it is ensured that tunnel lining structure 11 is not
Economy is reduced as blocked up.
Referring to Figures 1 and 2, the suspension element includes wirerope 31 and anchor pole 32, and 32 main body of anchor pole squeezes into the top of solution cavity wall 20
In portion's rock mass stability, the lower end of exposure is fixedly connected by connector 33 with the upper end of wirerope 31.The wirerope 31 is vertically worn
Cross each 30 plate body of loading plate, the anchor head 34 supported in fixed installation on wirerope 31 to the formation of loading plate 30 under each 30 plate face of loading plate
With anchorage 35.
The loading plate 30 is monolithic reinforced concrete structure.
Referring to Fig. 4, a kind of construction method for passing through the large-scale suspention backfill structure without filling solution cavity tunnel of the present invention, including
Following steps:
1. completing tunnel 10 by normal procedure to excavate, and constructs and pass through the large-scale tunnel lining structure without filling solution cavity
(11)；
2. setting anchor pole 32 on the 20 roof stabilisation rock mass of solution cavity wall in large-scale cavity, and steel is hung by connector 33
Cable 31；
3. formwork pours 30 concrete of top layer's loading plate in large-scale cavity, in plate after concrete reaches design strength
In anchor head 34 and anchorage 35 are fixedly mounted on wirerope 31 under face, to I hydraulic reclamation lightweight of upper cavity backfill material 21；
4. successively from top to bottom formwork pours each layer loading plate between top layer's loading plate 30 and lowest level loading plate 30
30, in fixed installation anchor head 34 and anchorage on wirerope 31 under plate face after 30 concrete of upper one layer of loading plate reaches design strength
35, to the II hydraulic reclamation lightweight of interlayer cavity backfill material 21；
5. formwork pours lowest level loading plate 30, in fixed on wirerope 31 under plate face after concrete reaches design strength
Anchor head 34 and anchorage 35 are installed, to the lower part III hydraulic reclamation lightweight of cavity backfill material 21.
The present invention described above that only explains through diagrams is a kind of to pass through the large-scale suspention backfill structure without filling solution cavity tunnel
And some principles of construction method, it is not intended to for the present invention being confined in shown and described specific structure and the scope of application,
Therefore all corresponding modifications that may be utilized and equivalent, belong to the applied the scope of the patents of the present invention.
Claims (4)
- Pass through the large-scale suspention without filling solution cavity tunnel 1. a kind of and backfill structure, including be filled in tunnel lining structure (11) with it is molten Lightweight backfill material (21) between hole wall (20) in large-scale cavity as falling rocks buffer layer, it is characterized in that: in the large size cavity Vertically interval setting loading plate (30), each loading plate (30) are fixed on by longitudinally, laterally spaced suspension element suspension On solution cavity wall (20) roof stabilisation rock mass；The periphery of each loading plate (30) is mounted on solution cavity wall (20), on cross section by It is above lower that large-scale cavity is separated to form upper cavity (I), interlayer cavity (II) and lower cavity (III)；The lightweight backfill material (21) from top to bottom successively hydraulic reclamation is interior in upper cavity (I), interlayer cavity (II) and lower cavity (III).
- 2. a kind of large size of passing through as described in claim 1 is without the suspention backfill structure for filling solution cavity tunnel, it is characterized in that: described Suspension element includes wirerope (31) and anchor pole (32), and anchor pole (32) main body is squeezed into solution cavity wall (20) roof stabilisation rock mass, gone out The lower end of dew is fixedly connected by connector (33) with the upper end of wirerope (31)；The wirerope (31) vertically passes through each loading plate (30) plate body, in the anchor head (34) that loading plate (30) are formed with support is fixedly mounted on wirerope (31) under each loading plate (30) plate face With anchorage (35).
- 3. a kind of large size of passing through as claimed in claim 2 is without the suspention backfill structure for filling solution cavity tunnel, it is characterized in that: described Loading plate (30) is monolithic reinforced concrete structure.
- 4. a kind of structure for passing through the large-scale suspention backfill structure without filling solution cavity tunnel as described in claims 1 to 3 any one Building method includes the following steps:1. completing tunnel (10) by normal procedure to excavate, and constructs and pass through the large-scale tunnel lining structure (11) without filling solution cavity；2. being set anchor pole (32) on solution cavity wall (20) roof stabilisation rock mass in large-scale cavity, and hung by connector (33) Wirerope (31)；3. formwork pours top layer's loading plate (30) concrete in large-scale cavity, in plate face after concrete reaches design strength Under in anchor head (34) and anchorage (35) are fixedly mounted on wirerope (31), expect (21) to the backfill of upper cavity (I) hydraulic reclamation lightweight；4. successively formwork pours each layer loading plate between top layer's loading plate (30) and lowest level loading plate (30) from top to bottom (30), after upper one layer of loading plate (30) concrete reaches design strength under plate face in anchor head is fixedly mounted on wirerope (31) (34) and anchorage (35), material (21) is backfilled to interlayer cavity (II) the hydraulic reclamation lightweight；5. formwork pours lowest level loading plate (30), in fixed on wirerope (31) under plate face after concrete reaches design strength Anchor head (34) and anchorage (35) are installed, to the lower part cavity (III) hydraulic reclamation lightweight backfill material (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246578.8A CN109882205B (en) | 2019-03-28 | 2019-03-28 | Suspension backfill structure penetrating through large filling-free karst cave tunnel and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246578.8A CN109882205B (en) | 2019-03-28 | 2019-03-28 | Suspension backfill structure penetrating through large filling-free karst cave tunnel and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882205A true CN109882205A (en) | 2019-06-14 |
| CN109882205B CN109882205B (en) | 2024-01-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847935A (en) * | 2019-11-22 | 2020-02-28 | 西南交通大学 | Rapid construction method for tunnel to penetrate through large karst cave cavity |
| CN111075471A (en) * | 2019-12-29 | 2020-04-28 | 中铁二院工程集团有限责任公司 | Large karst cavity top filling type tunnel rockfall prevention structure and construction method |
| CN111119929A (en) * | 2019-12-29 | 2020-05-08 | 中铁二院工程集团有限责任公司 | Lattice type rockfall prevention structure of large-scale ultrahigh karst cavity tunnel and construction method |
| CN111305866A (en) * | 2019-12-29 | 2020-06-19 | 中铁二院工程集团有限责任公司 | Large karst cavity tunnel structure and construction method |
| CN111396095A (en) * | 2020-04-21 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Tunnel simply-supported arch open cut tunnel structure penetrating through giant karst cave and construction method thereof |
| CN111411994A (en) * | 2020-04-21 | 2020-07-14 | 中铁二院工程集团有限责任公司 | Bridge spanning separation type bearing structure penetrating through giant karst cave and construction method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847935A (en) * | 2019-11-22 | 2020-02-28 | 西南交通大学 | Rapid construction method for tunnel to penetrate through large karst cave cavity |
| CN110847935B (en) * | 2019-11-22 | 2021-05-18 | 西南交通大学 | Rapid construction method for tunnel to penetrate through large karst cave cavity |
| CN111075471A (en) * | 2019-12-29 | 2020-04-28 | 中铁二院工程集团有限责任公司 | Large karst cavity top filling type tunnel rockfall prevention structure and construction method |
| CN111119929A (en) * | 2019-12-29 | 2020-05-08 | 中铁二院工程集团有限责任公司 | Lattice type rockfall prevention structure of large-scale ultrahigh karst cavity tunnel and construction method |
| CN111305866A (en) * | 2019-12-29 | 2020-06-19 | 中铁二院工程集团有限责任公司 | Large karst cavity tunnel structure and construction method |
| CN111396095A (en) * | 2020-04-21 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Tunnel simply-supported arch open cut tunnel structure penetrating through giant karst cave and construction method thereof |
| CN111411994A (en) * | 2020-04-21 | 2020-07-14 | 中铁二院工程集团有限责任公司 | Bridge spanning separation type bearing structure penetrating through giant karst cave and construction method thereof |
| CN111396095B (en) * | 2020-04-21 | 2024-05-24 | 中铁二院工程集团有限责任公司 | Tunnel simple arch open cut tunnel structure penetrating through huge karst cave and construction method thereof |
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