CN106988760A - Facility-sliding strata tunnel portal reinforcing construction and construction method - Google Patents
Facility-sliding strata tunnel portal reinforcing construction and construction method Download PDFInfo
- Publication number
- CN106988760A CN106988760A CN201710237273.1A CN201710237273A CN106988760A CN 106988760 A CN106988760 A CN 106988760A CN 201710237273 A CN201710237273 A CN 201710237273A CN 106988760 A CN106988760 A CN 106988760A
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- Prior art keywords
- hole
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- tunnel
- facility
- glass fibre
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
Abstract
Facility-sliding strata tunnel portal reinforcing construction and construction method, effectively to strengthen the security reliability that tunnel meets Facility-sliding strata construction.Facility-sliding strata tunnel portal reinforcing construction includes：Anchor pile and glass fibre drilled pile, anchor pile are arranged at hole both sides, and glass fibre drilled pile is set in a row along hole light and shade boundary lateral separation, and anchor pile and glass fibre drilled pile bottom pass through embedded basement rock behind slip fracture face；Hole open cut tunnel, is arranged at the outside of hole light and shade boundary；Open cut tunnel backfill stone, is filled at the top of the open cut tunnel of hole and both sides, to front face-upward slope formation back-pressure.
Description
Technical field
The invention belongs to Environment in Railway Engineering Construction technical field, more particularly to a kind of Facility-sliding strata tunnel portal reinforcing construction and
Construction method.
Background technology
In recent years, gradually southwester area is promoted railway construction in China, and Southwest Mountainous Areas is more, complex geologic conditions, on mountain
In the railway construction of ridge, tunnel portal construction is always all difficult point.Particularly tunnel portal meets Facility-sliding strata massif, and entrance construction is more
Plus it is difficult, the stability of Facility-sliding strata body should be ensured, ensure the security and stability of tunnel portal construction again.
According to current research, during the developmental joint fissure of hole, advance anchor bolt or pipe canopy are beaten beyond the excavation line of hole, so
Excavate side and carry out supporting in back；If Portal Section rock is relatively crushed, cranny development or because geological structure stability it is poor when, take pre- anchor
Gu, pre-pouring grout, set the reinforcing of the methods such as prestress anchorage cable, then take the methods such as expansions after first pilot tunnel, partial excavation, elder generation's wall rear arch
Construction.
Traditional construction method hole excavated volume is big, increases construction investment, at the same it is serious to environmental disruption, can not be effective
Guarantee Facility-sliding strata stability, the larger consolidation effect of cost is obvious.With the application development of glass-fibre technology, to solution
Certainly such issues that, will have larger breakthrough.
At present, also compare and lack Facility-sliding strata tunnel portal start tunneling measure and the research of method, and tunnel portal
The stability of construction is difficult to ensure.Therefore, the safety that the selection of Facility-sliding strata hole tunnel method is constructed to tunnel portal
The stability of property and side slope plays vital effect
The content of the invention
The technical problems to be solved by the invention are to provide a kind of Facility-sliding strata tunnel portal reinforcing construction, effectively to strengthen
Tunnel meets the security reliability of Facility-sliding strata construction.
The technical solution adopted for the present invention to solve the technical problems is as follows：
The Facility-sliding strata tunnel portal reinforcing construction of the present invention, it is characterized in that it includes：Anchor pile and glass fibre drilling
Stake, anchor pile is arranged at hole both sides, and glass fibre drilled pile is set in a row along hole light and shade boundary lateral separation, anchor pile and
Glass fibre drilled pile bottom passes through embedded basement rock behind slip fracture face；Hole open cut tunnel, is arranged at the outside of hole light and shade boundary；
Open cut tunnel backfill stone, is filled at the top of the open cut tunnel of hole and both sides, to front face-upward slope formation back-pressure.
The technical problems to be solved by the invention are to provide a kind of construction method of Facility-sliding strata tunnel portal reinforcing construction,
This method comprises the following steps：
1. construct hole both sides anchor pile；
2. in hole light and shade boundary construction glass fibre drilled pile；
3. bored tunnel upper semisection face, and advance support structure of constructing are excavated；
4. construction hole open cut tunnel and tunnel portal in time；
5. open cut tunnel backfill stone is filled in hole open cut tunnel top and both sides, to front face-upward slope formation back-pressure；
6. glass fibre drilled pile in hole is blocked, hole is entered in tunneling.The beneficial effects of the invention are as follows drilled using glass fibre
The method that stake is combined with anchor pile is reinforced after Facility-sliding strata, and combination hole open cut tunnel and backfill back-pressure face-upward slope, stable side slope
Stake is cut again and enters hole, the stability of Facility-sliding strata is can guarantee that, face-upward slope brush slope is reduced, and reduces the destruction to environment, it is effective to solve
Tunnel portal enters the problem in hole；The design for entering hole method for Facility-sliding strata tunnel portal provides scientific basis, strengthens tunnel
Road enters the security reliability that Facility-sliding strata construction is met in hole, and economic, reasonable, safe efficient, reduction is realized most possibly and is damaged
Lose.
Brief description of the drawings
This specification includes following width accompanying drawing：
Fig. 1 is the front view of Facility-sliding strata tunnel portal reinforcing construction of the present invention；
Fig. 2 is the side view of Facility-sliding strata tunnel portal reinforcing construction of the present invention；
Toponym and corresponding mark are shown in figure：Brush slope line 11, clay aquiclude 12, crack 13, mortar flag stone
14, bored tunnel 15, anchor pile 16, glass fibre drilled pile 17, open cut tunnel backfill stone 18, above-ground route 19, slip fracture face 20,
Hole light and shade boundary 21, hole open cut tunnel 22.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Referring to Figures 1 and 2, Facility-sliding strata tunnel portal reinforcing construction of the invention is included：Anchor pile 16 and glass fibre are bored
Hole stake 17, anchor pile 16 is arranged at hole both sides, and glass fibre drilled pile 17 is in a row set along 21 lateral separations of hole light and shade boundary
Put, anchor pile 16 and the bottom of glass fibre drilled pile 17 pass through embedded basement rock behind slip fracture face 20；Hole open cut tunnel 22, is arranged at
The outside of hole light and shade boundary 21；Open cut tunnel backfill stone 18, is filled in the top of hole open cut tunnel 22 and both sides, to front face-upward slope shape
Into back-pressure.The method combined using glass fibre drilled pile 17 with anchor pile 16 reinforces Facility-sliding strata, and combines hole open cut tunnel
22 and the back-pressure face-upward slope of open cut tunnel backfill stone 18, stake is cut again after stable side slope and enters hole, be can guarantee that the stability of Facility-sliding strata, is subtracted
Few face-upward slope brush slope, reduces the destruction to environment, effectively solves the problem that tunnel portal enters hole
Reference picture 1, the horizontal each interval of anchor pile 16 is set in a row.The arrangement of reinforcement of the anchor pile 16 is regular reinforcement, institute
The arrangement of reinforcement for stating glass fibre drilled pile is glass fibre.
Referring to Figures 1 and 2, the construction method of Facility-sliding strata tunnel portal reinforcing construction of the present invention, comprises the following steps：
1. construct hole both sides anchor pile 16；
2. in the construction glass fibre drilled pile 17 of hole light and shade boundary 21；
3. the upper semisection face of bored tunnel 15, and advance support structure of constructing are excavated；
4. construction hole open cut tunnel 22 and tunnel portal in time；
5. open cut tunnel backfill stone 18 is filled in the top of hole open cut tunnel 22 and both sides, to front face-upward slope formation back-pressure；
6. glass fibre drilled pile 17 in hole is blocked, hole is entered in tunneling.
The advance support structure includes the ductule set first and guiding wall, the steel tube shed then constructed.
Some of simply explain through diagrams Facility-sliding strata tunnel portal reinforcing construction of the present invention and construction method described above
Principle, be not intended to by the present invention be confined to shown in and described concrete structure and the scope of application in, therefore it is every be possible to by
The corresponding modification utilized and equivalent, belong to apllied the scope of the claims of the invention.
Claims (5)
1. Facility-sliding strata tunnel portal reinforcing construction, it is characterized in that it includes：Anchor pile (16) and glass fibre drilled pile (17),
Anchor pile (16) is arranged at hole both sides, and glass fibre drilled pile (17) is in a row set along hole light and shade boundary (21) lateral separation
Put, anchor pile (16) and glass fibre drilled pile (17) bottom are embedded in basement rock afterwards through slip fracture face (20)；Hole open cut tunnel
(22), it is arranged at the outside of hole light and shade boundary (21)；Open cut tunnel backfill stone (18), is filled in hole open cut tunnel (22) top and two
Side, to front face-upward slope formation back-pressure.
2. Facility-sliding strata tunnel portal reinforcing construction as claimed in claim 1, it is characterized in that：The anchor pile (16) is horizontal each
Every setting in a row.
3. Facility-sliding strata tunnel portal reinforcing construction as claimed in claim 1, it is characterized in that：The arrangement of reinforcement of the anchor pile (16)
For regular reinforcement, the arrangement of reinforcement of the glass fibre drilled pile is glass fibre.
4. the construction method of Facility-sliding strata tunnel portal reinforcing construction as claimed in claim 1, comprises the following steps：
1. construction hole both sides anchor pile (16)；
2. in hole light and shade boundary (21) construction glass fibre drilled pile (17)；
3. bored tunnel (15) upper semisection face, and advance support structure of constructing are excavated；
4. construction hole open cut tunnel (22) and tunnel portal in time；
5. open cut tunnel backfill stone (18) is filled in hole open cut tunnel (22) top and both sides, to front face-upward slope formation back-pressure；
6. glass fibre drilled pile (17) in hole are blocked, hole is entered in tunneling.
5. the construction method of Facility-sliding strata tunnel portal reinforcing construction as claimed in claim 3, it is characterized in that：The advanced branch
Protection structure includes the ductule set first and guiding wall, the steel tube shed then constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237273.1A CN106988760A (en) | 2017-04-12 | 2017-04-12 | Facility-sliding strata tunnel portal reinforcing construction and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237273.1A CN106988760A (en) | 2017-04-12 | 2017-04-12 | Facility-sliding strata tunnel portal reinforcing construction and construction method |
Publications (1)
| Publication Number | Publication Date |
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| CN106988760A true CN106988760A (en) | 2017-07-28 |
Family
ID=59416113
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710237273.1A Pending CN106988760A (en) | 2017-04-12 | 2017-04-12 | Facility-sliding strata tunnel portal reinforcing construction and construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441456A (en) * | 2018-12-14 | 2019-03-08 | 中铁二院工程集团有限责任公司 | A kind of the tunnel structure and its construction method of weakness Facility-sliding strata |
| CN109915150A (en) * | 2019-04-26 | 2019-06-21 | 重庆交通大学 | A kind of pile foundation pre-reinforcement supporting construction and its construction method controlling tunnel subsidence |
| CN110424460A (en) * | 2019-08-22 | 2019-11-08 | 中铁隧道集团三处有限公司 | A kind of tunnel open excavation construction technology |
| CN111926856A (en) * | 2020-07-01 | 2020-11-13 | 中铁二院重庆勘察设计研究院有限责任公司 | Tunnel entering construction method based on longitudinal anti-skid open cut tunnel structure |
| CN112922635A (en) * | 2021-02-04 | 2021-06-08 | 中工武大设计研究有限公司 | Hydraulic tunnel excavation supporting structure and construction method |
| CN114718582A (en) * | 2022-06-08 | 2022-07-08 | 中铁九局集团第七工程有限公司 | Construction method for small-clear-distance horizontal joint shale geological tunnel portal section |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441456A (en) * | 2018-12-14 | 2019-03-08 | 中铁二院工程集团有限责任公司 | A kind of the tunnel structure and its construction method of weakness Facility-sliding strata |
| CN109441456B (en) * | 2018-12-14 | 2024-04-09 | 中铁二院工程集团有限责任公司 | Tunnel entering structure of weak and slippery stratum and construction method thereof |
| CN109915150A (en) * | 2019-04-26 | 2019-06-21 | 重庆交通大学 | A kind of pile foundation pre-reinforcement supporting construction and its construction method controlling tunnel subsidence |
| CN110424460A (en) * | 2019-08-22 | 2019-11-08 | 中铁隧道集团三处有限公司 | A kind of tunnel open excavation construction technology |
| CN111926856A (en) * | 2020-07-01 | 2020-11-13 | 中铁二院重庆勘察设计研究院有限责任公司 | Tunnel entering construction method based on longitudinal anti-skid open cut tunnel structure |
| CN112922635A (en) * | 2021-02-04 | 2021-06-08 | 中工武大设计研究有限公司 | Hydraulic tunnel excavation supporting structure and construction method |
| CN114718582A (en) * | 2022-06-08 | 2022-07-08 | 中铁九局集团第七工程有限公司 | Construction method for small-clear-distance horizontal joint shale geological tunnel portal section |
| CN114718582B (en) * | 2022-06-08 | 2022-09-06 | 中铁九局集团第七工程有限公司 | Construction method for small-clear-distance horizontal joint shale geological tunnel portal section |
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