CN106437751A - High ground stress weak surrounding rock tunnel supporting structure and construction method thereof - Google Patents
High ground stress weak surrounding rock tunnel supporting structure and construction method thereof Download PDFInfo
- Publication number
- CN106437751A CN106437751A CN201610936331.5A CN201610936331A CN106437751A CN 106437751 A CN106437751 A CN 106437751A CN 201610936331 A CN201610936331 A CN 201610936331A CN 106437751 A CN106437751 A CN 106437751A
- Authority
- CN
- China
- Prior art keywords
- buffer layer
- layer structure
- preliminary bracing
- secondary lining
- ground stress
- 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
Links
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000011435 rock Substances 0.000 title claims abstract description 18
- 238000007363 ring formation reaction Methods 0.000 claims abstract description 7
- 239000012943 hotmelt Substances 0.000 claims description 15
- 238000003032 molecular docking Methods 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 239000010454 slate Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a high ground stress weak surrounding rock tunnel supporting structure and a construction method thereof. According to the high ground stress weak surrounding rock tunnel supporting structure, rigid supporting, primary supporting and secondary lining rigid contact are adopted, the stress concentration phenomenon is outstanding, and secondary lining breakage is likely to be caused. According to the method, primary supporting of closed ring formation is included, the surface of the primary supporting is provided with a buffer layer structure, the surface of the buffer layer structure is provided with a waterproof plate, and secondary lining is executed on the surface of the waterproof plate; the surface of the buffer layer structure is provided with a hot melting liner, and the hot melting liner and the buffer layer structure are fixed to the base surface of the primary supporting through fasteners and metal rings. Under the high stress condition, the buffer layer structure is manufactured, stress is uniform during secondary lining, and meanwhile pressure applied on the secondary lining at the later period can be effectively lowered due to compressive deformation to ensure the structural safety.
Description
Technical field
The invention belongs to traffic engineering technical field, and in particular to a kind of high-ground stress Support System in Soft Rock Tunnels supporting construction and
Its construction method.
Background technology
Under large ground pressure, as blue Chongqing line Permian System slate and carbonaceous slate, Triassic system slate, Silurian phyllite
On stratum, lithology weak, strength-stress ratio are little, belong to high～high ground stress environment, are described as " special class surrounding rock ", country rock by expert
Stability is poor, deformation is big, the deformation persistent period is long, and in construction, many tunnels there occurs Squeezing ground large deformation problem, with pressing
Hurry up, deform big, persistent period length, the features such as stable, supporting construction stress is big are difficult to, rheological phenomena is projected, 2 ~ 3 after the completion of construction
In year, or even deformation in 5 ~ 6 years is just final stable, causes long paragraph secondary lining rhegma, seriously jeopardizes operation security.Traditional
Supporting structure design method, using rigid protection, rigid contact between preliminary bracing and secondary lining, it is contemplated that preliminary bracing deforms
Inequality, between preliminary bracing and secondary lining point contact, stress concentration phenomenon project, rheology pressure act under, Yi Zao
Become later-stage secondary damage of lining.
Content of the invention
It is an object of the invention to provide a kind of high-ground stress Support System in Soft Rock Tunnels supporting construction and its construction method, in tunnel
Periphery arranges cushion, effectively solving problems of the prior art.
The technical solution adopted in the present invention is：
High-ground stress Support System in Soft Rock Tunnels supporting construction, it is characterised in that：
Including closing the preliminary bracing of cyclization, preliminary bracing surface is provided with buffer layer structure, and buffer layer structure surface arranges anti-
Water plate, waterproof plate surface performs secondary lining.
Buffer layer structure adopts high density closed cell rubber-plastic sponge plate flexible material, its buffer layer structure surface layout fusible interlining
Hot melt liner is eased up by nailing and becket and rushes Rotating fields and be fixed on the basal plane of preliminary bracing by pad.
Quincuncial arrangement hot melt liner is pressed on buffer layer structure surface.
Buffer layer structure is laid from the longitudinal midline at tunnel vault position to both sides, is spliced using docking piece mode.
The construction method of high-ground stress Support System in Soft Rock Tunnels supporting construction, it is characterised in that：
Comprise the following steps：
Step one：Preliminary bracing is performed after tunnel excavation in time, and preliminary bracing is performed according to deformation and propped up for single or multiple lift
Shield；
Step 2：Buffer layer structure is performed in time after preliminary bracing closing cyclization；
Step 3：Longitudinal midline is marked at tunnel vault position, and surplus capacity is stopped according to the concavo-convex situation of basal plane, from arch to two
Side wall is laid；Rushed gentle for hot melt liner Rotating fields and be smoothly fixed on basal plane with nailing and becket, fixing dot spacing
Arch is 25-50cm, and abutment wall is that the concavo-convex larger part of basal plane increases fixing point 50-80cm, by quincunx laying, ties cushion
Structure is closely connected with preliminary bracing, using docking piece；
Step 4：Splash guard is hung on buffer layer structure surface by hot melt liner；
Step 5：After buffer layer structure and splash guard are fixed, secondary lining is performed in time.
The present invention has advantages below：
Supporting construction of the present invention, under large ground pressure, performs buffer layer structure, and which can replace non-woven fabrics, and anti-
The closely connected setting of water plate, is arranged between preliminary bracing and secondary lining so that secondary lining uniform stressed, while its compression can
Effectively reduce pressure of the late-acting on secondary lining, it is ensured that structure safety.
Description of the drawings
Fig. 1 is high-ground stress Support System in Soft Rock Tunnels Design Proposal for Supporting Structure schematic diagram.
Fig. 2 adds buffer layer structure to lay planar representation for splash guard.
Fig. 3 lays schematic diagram for cushion.
Fig. 4 adds buffer layer structure to lay schematic diagram for splash guard.
In figure, 1- preliminary bracing, 2- buffer layer structure, 3- splash guard, 4- secondary lining, 5- nailing, 6- metal washer, 7-
Hot melt liner.
Specific embodiment
With reference to specific embodiment, the present invention will be described in detail.
Tunnel perimeter arrange cushion can effectively solving problems of the prior art, buffer layer structure is between the initial stage
Between supporting and secondary lining so that be flexible contact between preliminary bracing and secondary lining, make secondary lining uniform stressed；With
When buffer layer structure there is certain compressibility, pressure is discharged by its compression, can effectively be reduced and act on secondary lining
Rheology pressure.
High-ground stress Support System in Soft Rock Tunnels supporting construction according to the present invention, including closing the preliminary bracing 1 of cyclization, initial stage
1 surface of supporting is provided with buffer layer structure 2, and 2 surface of buffer layer structure arranges splash guard 3, and 3 surface of splash guard performs secondary lining
4.
Buffer layer structure 2 is using the flexible materials such as high density closed cell rubber-plastic sponge plate, 2 surface layout hot melt of buffer layer structure
Liner 7, is fixed on hot melt liner 7 and buffer layer structure 2 on the basal plane of preliminary bracing 1 by nailing 5 and becket 6.Buffering
Quincuncial arrangement hot melt liner 7 is pressed on 2 surface of Rotating fields.Buffer layer structure 2 is spread from the longitudinal midline at tunnel vault position to both sides
If being spliced using docking piece mode.
The construction method of above-mentioned high-ground stress Support System in Soft Rock Tunnels supporting construction, comprises the following steps：
Step one：Preliminary bracing 1 is performed in time after tunnel excavation, preliminary bracing is performed according to deformation and propped up for single or multiple lift
Shield；
Step 2：Preliminary bracing 1 performs buffer layer structure 2 after closing cyclization in time；
Step 3：Longitudinal midline is marked at tunnel vault position, and surplus capacity is stopped according to the concavo-convex situation of basal plane, from arch to two
Side wall is laid；With nailing 5 and becket 6, hot melt liner 7 and buffer layer structure 2 are smoothly fixed on basal plane, fixing point
Spacing arch is 25-50cm, and abutment wall is that the concavo-convex larger part of basal plane increases fixing point, makes buffering 50-80cm, by quincunx laying
Rotating fields are closely connected with preliminary bracing, using docking piece；
Step 4：Splash guard 3 is hung on buffer layer structure surface by hot melt liner 7；
Step 5：After buffer layer structure 2 and splash guard 3 are fixed, secondary lining 4 is performed in time.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And any equivalent conversion taken by technical solution of the present invention, the claim for being the present invention covered.
Claims (5)
1. high-ground stress Support System in Soft Rock Tunnels supporting construction, it is characterised in that：
Including closing the preliminary bracing of cyclization（1）, preliminary bracing（1）Surface is provided with buffer layer structure（2）, buffer layer structure
（2）Surface arranges splash guard（3）, splash guard（3）Surface performs secondary lining（4）.
2. high-ground stress Support System in Soft Rock Tunnels supporting construction according to claim 1, it is characterised in that：
Buffer layer structure（2）Using high density closed cell rubber-plastic sponge plate flexible material, its buffer layer structure（2）Surface layout hot melt
Liner（7）, by nailing（5）And becket（6）By hot melt liner（7）And buffer layer structure（2）It is fixed on preliminary bracing（1）'s
On basal plane.
3. high-ground stress Support System in Soft Rock Tunnels supporting construction according to claim 2, it is characterised in that：
Buffer layer structure（2）Quincuncial arrangement hot melt liner is pressed on surface（7）.
4. high-ground stress Support System in Soft Rock Tunnels supporting construction according to claim 3, it is characterised in that：
Buffer layer structure（2）Lay from the longitudinal midline at tunnel vault position to both sides, spliced using docking piece mode.
5. the construction method of high-ground stress Support System in Soft Rock Tunnels supporting construction, it is characterised in that：
Comprise the following steps：
Step one：Preliminary bracing is performed after tunnel excavation in time（1）, preliminary bracing performed as single or multiple lift according to deformation
Supporting；
Step 2：Preliminary bracing（1）Buffer layer structure is performed in time after closing cyclization（2）；
Step 3：Longitudinal midline is marked at tunnel vault position, and surplus capacity is stopped according to the concavo-convex situation of basal plane, from arch to two
Side wall is laid；Use nailing（5）And becket（6）By hot melt liner（7）And buffer layer structure（2）Basal plane is smoothly fixed on
On, it is 50-80cm that fixing dot spacing arch is 25-50cm, abutment wall, and by quincunx laying, the concavo-convex larger part of basal plane increases to be fixed
Point, makes buffer layer structure closely connected with preliminary bracing, using docking piece；
Step 4：By hot melt liner（7）Splash guard is hung on buffer layer structure surface（3）；
Step 5：Buffer layer structure（2）And splash guard（3）After fixation, secondary lining is performed in time（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936331.5A CN106437751A (en) | 2016-11-01 | 2016-11-01 | High ground stress weak surrounding rock tunnel supporting structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610936331.5A CN106437751A (en) | 2016-11-01 | 2016-11-01 | High ground stress weak surrounding rock tunnel supporting structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437751A true CN106437751A (en) | 2017-02-22 |
Family
ID=58177702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610936331.5A Pending CN106437751A (en) | 2016-11-01 | 2016-11-01 | High ground stress weak surrounding rock tunnel supporting structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437751A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166999A (en) * | 2017-09-18 | 2018-06-15 | 招商局重庆交通科研设计院有限公司 | A kind of antifreeze fire proof construction of the waterproof of tunnel in cold area |
| CN110173276A (en) * | 2019-05-28 | 2019-08-27 | 西南交通大学 | A kind of tunnel constant limit resistance buffer structure and its construction method |
| CN110714770A (en) * | 2019-10-29 | 2020-01-21 | 中铁隧道集团二处有限公司 | Support method for releasing high ground stress of hard horizontal surrounding rock through buffer layer |
| CN113550753A (en) * | 2021-09-06 | 2021-10-26 | 中铁二局第四工程有限公司 | Construction method of crossing middle partition wall with through upper step in advance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3223330A1 (en) * | 1982-06-23 | 1983-12-29 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Mine-roadway or tunnel-roadway lining for the evacuation of, preferably, rock water |
| CN202731941U (en) * | 2012-08-15 | 2013-02-13 | 中铁十九局集团第二工程有限公司 | Waterproof apparatus for tunnel construction |
| CN203463114U (en) * | 2013-07-23 | 2014-03-05 | 中铁十三局集团第五工程有限公司 | Waterproof device applied to tunnel construction |
| CN203867586U (en) * | 2014-05-04 | 2014-10-08 | 西南交通大学 | Connecting structure used for connecting bridge and tunnel |
| CN206220970U (en) * | 2016-11-01 | 2017-06-06 | 中铁第一勘察设计院集团有限公司 | A kind of high-ground stress Support System in Soft Rock Tunnels supporting construction |
-
2016
- 2016-11-01 CN CN201610936331.5A patent/CN106437751A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3223330A1 (en) * | 1982-06-23 | 1983-12-29 | Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck | Mine-roadway or tunnel-roadway lining for the evacuation of, preferably, rock water |
| CN202731941U (en) * | 2012-08-15 | 2013-02-13 | 中铁十九局集团第二工程有限公司 | Waterproof apparatus for tunnel construction |
| CN203463114U (en) * | 2013-07-23 | 2014-03-05 | 中铁十三局集团第五工程有限公司 | Waterproof device applied to tunnel construction |
| CN203867586U (en) * | 2014-05-04 | 2014-10-08 | 西南交通大学 | Connecting structure used for connecting bridge and tunnel |
| CN206220970U (en) * | 2016-11-01 | 2017-06-06 | 中铁第一勘察设计院集团有限公司 | A kind of high-ground stress Support System in Soft Rock Tunnels supporting construction |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166999A (en) * | 2017-09-18 | 2018-06-15 | 招商局重庆交通科研设计院有限公司 | A kind of antifreeze fire proof construction of the waterproof of tunnel in cold area |
| CN108166999B (en) * | 2017-09-18 | 2023-10-27 | 招商局重庆交通科研设计院有限公司 | Waterproof, antifreezing and fireproof structure of tunnel in cold region |
| CN110173276A (en) * | 2019-05-28 | 2019-08-27 | 西南交通大学 | A kind of tunnel constant limit resistance buffer structure and its construction method |
| CN110714770A (en) * | 2019-10-29 | 2020-01-21 | 中铁隧道集团二处有限公司 | Support method for releasing high ground stress of hard horizontal surrounding rock through buffer layer |
| CN113550753A (en) * | 2021-09-06 | 2021-10-26 | 中铁二局第四工程有限公司 | Construction method of crossing middle partition wall with through upper step in advance |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |