CN104533442A - Rockfall prevention structure for tunnel portal - Google Patents
Rockfall prevention structure for tunnel portal Download PDFInfo
- Publication number
- CN104533442A CN104533442A CN201410798591.1A CN201410798591A CN104533442A CN 104533442 A CN104533442 A CN 104533442A CN 201410798591 A CN201410798591 A CN 201410798591A CN 104533442 A CN104533442 A CN 104533442A
- Authority
- CN
- China
- Prior art keywords
- tunnel portal
- rockfall
- tunnel
- falling rocks
- domatic
- 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.)
- Granted
Links
- 230000002265 prevention Effects 0.000 title abstract 5
- 239000011435 rock Substances 0.000 claims abstract description 28
- 230000006698 induction Effects 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a rockfall prevention structure for a tunnel portal. The rockfall prevention structure for the tunnel portal aims to substantially reduce the amount of moving rocks at the tunnel portal, lower the construction cost of a rockfall prevention project and reduce the construction difficulty. The rockfall prevention structure for the tunnel portal comprises a tunnel portal structure and a rockfall happening area located on a slope face above the tunnel portal structure. A falling rock induction groove is formed in the portion, between the tunnel portal structure and the rockfall happening area, of the slope face. The falling rock induction groove is provided with an arc top segment, a left side segment and a right side segment, wherein the arc top segment is close to the rockfall happening area, and the left side segment and the right side segment extend downwards along the original slope face to the portions outside the tunnel portal structure and the line.
Description
Technical field
The present invention relates to railway, highway tunnel is imported and exported, be applicable to tunnel portal and cause rockfall to grow because of relief joint band, and affect railway, the process of Highway Tunnel Portal rockfall of structure of the window and operation security.
Background technology
Mountain railway, highway limit by landform, and circuit is usually walked in high and steep mountains, inevitably cross over the cheuch in the mountain ridge, river.Because of by the restriction of route curve radius, circuit need pass through high and steep mountains with construction of tunnel, crosses over cheuch, river, particularly, valley deep location steep in tunnel portal landform with bridge engineering, also often occurs with the form of Bridge-wire fusing time.
Because Bridge-wire fusing time location is subject to the restriction of landform and construction plant, the limit of tunnel's entrance and exit, to face upward slope high steep, geological conditions is severe, under the effect of the natural calamity such as rainwater and earthquake, crag, falling rocks, avalanche etc. can be formed, very easily significant damage is caused to the bridge engineering of tunnel portal and next-door neighbour, serious threat operation security.For avoiding or reducing the harm of a series of unfavorable geologies such as tunnel portal crag, falling rocks to the bridge engineering of next-door neighbour, ensure the safe, stable of tunnel portal, bridge construction and traffic safety, be necessary to take safeguard procedures in bridge tunnel next-door neighbour location, to guarantee that the bridge tunnel be close to is connected the structural safety in location.
For the rockfall at hole, to adopt mortar flag stone to carry out benefits embedding in order to remove hole rockfall for conventional processing method, and increase hangar tunnel or open-cut tunnel structure in case sporadicly falling rocks impacts structure operation security at tunnel portal.
When tunnel portal exists rockfall, general side slope is steep, and rockfall is grown.When adopting clear side to process, brush side's amount is huge, deals with difficult.For Xian Xin room, newly-built Chongqing to Lichuan tunnel exit, for removing hole rockfall, hole brush side is up to 60m.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of tunnel portal rock-fall proof structure, to reduce Tunnel mouth brush side amount and rock-fall proof construction costs significantly, reduces difficulty of construction.
The technical solution used in the present invention is as follows:
Tunnel portal rock-fall proof structure of the present invention, comprise Tunnel Portal Structures and the side of being located thereon domatic on rockfall generation area, it is characterized in that: between described Tunnel Portal Structures and rockfall generation area, on domatic, falling rocks induction groove is set, this falling rocks induction groove has the arched top section of close rockfall generation area, and former left side section, right side section beyond the domatic outside extending downward Tunnel Portal Structures and circuit.
The invention has the beneficial effects as follows, induce groove at the former domatic falling rocks that arranges, when falling rocks occurring and gliding, falling rocks can be induced to glide along groove, play the protective effect to existing structure and circuit operation security; Because falling rocks induction recess gauge mould is less, can avoids causing large brush side to existing massif is domatic, reduce rock-fall proof construction costs significantly, and farthest reduce the destruction to former surface vegetation; Falling rocks induction groove also doublely can do the effect of tunnel portal drainage gutter, more convenient, the safety of falling rocks induction groove construction more original rockfall process structure construction.
Accompanying drawing explanation
This manual comprises following four width accompanying drawings:
Fig. 1 is the floor map of tunnel portal rock-fall proof of the present invention structure;
Fig. 2 is the longitudinal plane structure schematic diagram of tunnel portal rock-fall proof of the present invention structure;
Fig. 3 is the cross-sectional configuration schematic diagram of tunnel portal rock-fall proof of the present invention structure;
Component shown in figure, toponym and corresponding mark: falling rocks induction groove 11, Tunnel Portal Structures 12, rockfall generation area 21.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 1, Fig. 2 and Fig. 3, tunnel portal rock-fall proof structure of the present invention, comprise Tunnel Portal Structures 12 and the side of being located thereon domatic on rockfall generation area 21.Between described Tunnel Portal Structures 12 and rockfall generation area 21, on domatic, falling rocks induction groove 11 is set, this falling rocks induction groove 11 has the arched top section of close rockfall generation area 21, and section on the right side of section, arc on the left of former arc beyond the domatic outside extending downward Tunnel Portal Structures 12 and circuit.The falling rocks that rockfall generation area 21 produces, falls in falling rocks induction groove 11, induces groove 11 to change its movement locus by falling rocks, makes it tumble along falling rocks induction groove 11, avoids damaging circuit and affecting circuit operation security.
With reference to Fig. 1, as the typical form of structure of one, described falling rocks induction groove 11 is inverted U in the line style on domatic.
The present invention compares with existing clear side's treatment measures, can avoid causing large brush side to existing massif is domatic, reduce rock-fall proof construction costs significantly, and farthest reduce the destruction to former surface vegetation, more convenient, the safety of more original rockfall process of constructing structure construction.
For the sharp line tunnel portal that changes, for guaranteeing tunnel portal structural safety and circuit operation security, hole country rock falling rocks and relief joint development belt need be removed, estimating to need clear side about 2.1 ten thousand sides altogether, tunnel portal is faced upward slope brush side and is highly reached 60m, construction costs about 3,600 ten thousand yuan.If change tunnel portal rock-fall proof of the present invention structure into, by arrange 3m bottom width × 2m high × the long falling rocks induction groove of 280m, effectively can avoid the impact that hole rockfall and relief joint band cause tunnel portal and circuit operation security, construction costs only about 7,000,000 yuan, save construction costs 2,900 ten thousand yuan, economic benefit is very remarkable.
Some principles of the above tunnel portal rock-fall proof of the present invention structure that just explains through diagrams, be not the present invention to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the present invention applies for.
Claims (2)
1. tunnel portal rock-fall proof structure, comprise Tunnel Portal Structures (12) and the side of being located thereon domatic on rockfall generation area (21), it is characterized in that: between described Tunnel Portal Structures (12) and rockfall generation area (21), on domatic, falling rocks induction groove (11) is set, this falling rocks induction groove (11) has the arched top section of close rockfall generation area (21), and former left side section, right side section beyond the domatic outside extending downward Tunnel Portal Structures (12) and circuit.
2. tunnel portal rock-fall proof structure as claimed in claim 1, is characterized in that: described falling rocks induction groove (11) is inverted U in the line style on domatic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798591.1A CN104533442B (en) | 2014-12-18 | 2014-12-18 | The anti-fall stone construction of tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798591.1A CN104533442B (en) | 2014-12-18 | 2014-12-18 | The anti-fall stone construction of tunnel portal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533442A true CN104533442A (en) | 2015-04-22 |
| CN104533442B CN104533442B (en) | 2017-03-08 |
Family
ID=52849042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410798591.1A Active CN104533442B (en) | 2014-12-18 | 2014-12-18 | The anti-fall stone construction of tunnel portal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533442B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381877A (en) * | 2016-11-30 | 2017-02-08 | 贵州大学 | Method for transferring dangerous rock body cut stone on high and steep slope and structure of method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201486563U (en) * | 2009-06-29 | 2010-05-26 | 中铁二院工程集团有限责任公司 | Tunnel portal structure of high-speed railway |
| CN101736707A (en) * | 2009-12-15 | 2010-06-16 | 中国科学院水利部成都山地灾害与环境研究所 | Novel energy consumption damping stone blocking structure |
| CN202117685U (en) * | 2011-06-22 | 2012-01-18 | 中铁二院工程集团有限责任公司 | Rockfall protection structure for extended open cut tunnel of railway tunnel |
| CN202116993U (en) * | 2011-06-22 | 2012-01-18 | 中铁二院工程集团有限责任公司 | Slope collapse rock prevention open-cut tunnel structure for multi-line unequal-altitude railways |
| CN203230429U (en) * | 2012-12-31 | 2013-10-09 | 中铁第四勘察设计院集团有限公司 | Constant annular width beveling-type tunnel opening buffer structure |
| CN103912282A (en) * | 2012-12-31 | 2014-07-09 | 中铁第四勘察设计院集团有限公司 | Equal ring width inclined-cutting type tunnel portal structure |
| CN204357444U (en) * | 2014-12-18 | 2015-05-27 | 中铁二院工程集团有限责任公司 | Tunnel portal rock-fall proof constructs |
-
2014
- 2014-12-18 CN CN201410798591.1A patent/CN104533442B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201486563U (en) * | 2009-06-29 | 2010-05-26 | 中铁二院工程集团有限责任公司 | Tunnel portal structure of high-speed railway |
| CN101736707A (en) * | 2009-12-15 | 2010-06-16 | 中国科学院水利部成都山地灾害与环境研究所 | Novel energy consumption damping stone blocking structure |
| CN202117685U (en) * | 2011-06-22 | 2012-01-18 | 中铁二院工程集团有限责任公司 | Rockfall protection structure for extended open cut tunnel of railway tunnel |
| CN202116993U (en) * | 2011-06-22 | 2012-01-18 | 中铁二院工程集团有限责任公司 | Slope collapse rock prevention open-cut tunnel structure for multi-line unequal-altitude railways |
| CN203230429U (en) * | 2012-12-31 | 2013-10-09 | 中铁第四勘察设计院集团有限公司 | Constant annular width beveling-type tunnel opening buffer structure |
| CN103912282A (en) * | 2012-12-31 | 2014-07-09 | 中铁第四勘察设计院集团有限公司 | Equal ring width inclined-cutting type tunnel portal structure |
| CN204357444U (en) * | 2014-12-18 | 2015-05-27 | 中铁二院工程集团有限责任公司 | Tunnel portal rock-fall proof constructs |
Non-Patent Citations (2)
| Title |
|---|
| 张中俭等: "滚石灾害防治方法浅析", 《工程地质学报》 * |
| 赵万强等: "今后铁路隧道设计应重视的方面", 《铁道工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106381877A (en) * | 2016-11-30 | 2017-02-08 | 贵州大学 | Method for transferring dangerous rock body cut stone on high and steep slope and structure of method |
| CN106381877B (en) * | 2016-11-30 | 2018-11-13 | 贵州大学 | Dangerous Rock Body cuts the method and its structure of quadrel transhipment on a kind of high escarpment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104533442B (en) | 2017-03-08 |
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