CN204781274U - Tunnel portal faces upward on limit sloping catch water drain structure - Google Patents
Tunnel portal faces upward on limit sloping catch water drain structure Download PDFInfo
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- CN204781274U CN204781274U CN201520342527.2U CN201520342527U CN204781274U CN 204781274 U CN204781274 U CN 204781274U CN 201520342527 U CN201520342527 U CN 201520342527U CN 204781274 U CN204781274 U CN 204781274U
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- catchwater
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- tunnel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model relates to a tunnel portal faces upward on limit sloping catch water drain structure. The utility model aims at providing a tunnel portal faces upward on limit sloping catch water drain structure to phase reaches reduces construction cost, improvement efficiency of construction, simple and convenient safe mesh. The utility model provides a: tunnel portal faces upward on limit sloping catch water drain structure is applied to hard rock condition, tunnel mouth limit, faces upward sloping opening line and has basement rock face, its characterized in that outward: on the limit, face upward sloping opening line outside 3 -5m department carry out plain noodles rock mass chisel hair to the basement rock face or broken rock mass chisel removes, arrange in the basement rock face that mortar stock and one end expose to exerted mortar stock founds mould concreting catch water drain ditch body for the joint bar. The utility model is suitable for an it is waterproof that the side slope is the earth's surface of hard rock, belongs to highway drainage technology field.
Description
Technical field
The utility model relates to a kind of tunnel portal limit, faces upward slope catchwater structure, is applicable to the earth's surface waterproof that side slope is hard rock, belongs to highway drainage technical field.
Background technology
Washing away hole and limit, hole for preventing surface water, facing upward the water on slope and flow into tunnel, generally at upward slope at exit of tunnel aperture lines 3 ~ 5m with peripheral hardware catchwater, outside underground water ejectment to hole scope.Current catchwater section generally adopts rectangular cross section or trapezoidal cross-section, and ditch stature material adopts mortar flag stone, needs adopt machinery or manually excavate groove body before catchwater construction.
For soil condition limit, face upward slope catchwater, construction technology is ripe, but builds position general vehicle by laying bricks or stones because of catchwater and cannot arrive, and needs a dead lift stone, has that construction cost is large, speed of application slow, potential safety hazard distinct issues; For hard rock condition limit, face upward slope catchwater, except having except Similar Problems with soil condition, also there are the following problems: catchwater headroom is less, generally once excavate shaping, need according to on-the-spot rock behavio(u)r design blasting parameter, carry out loosening blasting, and after explosion completes, adopt pneumatic pick to repair catchwater side slope, time-consuming, effort.
Summary of the invention
The technical problems to be solved in the utility model is: for solving the problem, and provides a kind of upward slope at exit of tunnel catchwater structure, the object reduce construction cost to reaching, improving efficiency of construction, handy and safe.
The technical scheme that the utility model adopts is: upward slope at exit of tunnel catchwater structure, be applied to hard rock condition, tunnel mouth limit, face upward outside the aperture lines of slope there is bedrock surface, it is characterized in that: on limit, face upward slope aperture lines outer 3-5m place and light face rock mass dabbing is carried out to bedrock surface or fragmented rock body cuts, arrange grouting rock bolt in bedrock surface and one expose, with the grouting rock bolt exposed for joint bar formwork erection concreting catchwater ditch body.
Described grouting rock bolt is C22 grouting rock bolt, and longitudinal arrangement pitch 1m, long 2m, enter rock 1m, and expose 1m and pour into C20 concrete catchwater ditch body, anchor pole tilt angled down is 10-20 °.
Described concrete catchwater ditch is as trapezoidal transverse face, and ditch body top width is 20cm, and inside furrow bank, ratio of slope is 1:0.3, is vertical plane outside furrow bank.
The beneficial effects of the utility model are: the utility model is carrying out the rear directly concreting of cleaning as catchwater to bedrock surface, and the grouting rock bolt by bedrock surface is arranged, by catchwater and the domatic compact siro spinning technology of basement rock.The utility model, under hard rock condition, need not carry out Blasting Excavation to catchwater groove, and is suitable for rough landform, can accelerating construction progress, reduces construction cost and difficulty of construction.
Accompanying drawing explanation
Fig. 1 is sectional view of the present utility model.
Detailed description of the invention
As shown in Figure 1, the present embodiment is applied to hard rock condition, tunnel mouth limit, faces upward outside slope aperture lines 4 and has bedrock surface 3, on limit, faces upward the outer 3-5m place of slope aperture lines 4 and carries out light face rock mass dabbing to bedrock surface 3 or fragmented rock body cuts process; Then apply grouting rock bolt 2 as joint bar to bedrock surface 3, anchor pole half inserts bedrock surface 3, and second half exposes, and with the grouting rock bolt exposed for joint bar formwork erection concreting catchwater ditch body 1, makes bedrock surface and concrete catchwater ditch body connect into entirety.
Described grouting rock bolt 2 is C22 grouting rock bolt, and longitudinal arrangement pitch 1m, long 2m, enter rock 1m, and expose 1m and pour into C20 concrete catchwater ditch body 1, anchor pole tilt angled down is 10-20 °.
Described concrete catchwater ditch body 1 is trapezoidal transverse face, and adopt C20 concrete to build, ditch body top width is 20cm, and inside furrow bank, ratio of slope is 1:0.3, is vertical plane outside furrow bank.Bottom of trench width b and ditch height degree h generally adopts 50cm, and reality can adjust according to concrete landform and catchment area.
The construction sequence of the present embodiment is as follows:
(1) on limit, face upward the outer 3 ~ 5m of slope aperture lines and intend applying catchwater position bedrock surface is processed, the rock mass more broken for scar should cut, and the rock mass smooth for scar should carry out dabbing;
(2) C22 grouting rock bolt is applied as joint bar;
(3) build C20 concrete and form catchwater.
Claims (3)
1. a upward slope at exit of tunnel catchwater structure, be applied to hard rock condition, tunnel mouth limit, face upward outside slope aperture lines (4) there is bedrock surface (3), it is characterized in that: on limit, face upward slope aperture lines (4) outer 3-5m place and light face rock mass dabbing is carried out to bedrock surface (3) or fragmented rock body cuts, arrange grouting rock bolt (2) in bedrock surface (3) and one expose, with the grouting rock bolt exposed for joint bar formwork erection concreting catchwater ditch body (1).
2. upward slope at exit of tunnel catchwater structure according to claim 1, it is characterized in that: described grouting rock bolt (2) is C22 grouting rock bolt, longitudinal arrangement pitch 1m, long 2m, enter rock 1m, expose 1m and pour into C20 concrete catchwater ditch body (1), anchor pole tilt angled down is 10-20 °.
3. upward slope at exit of tunnel catchwater structure according to claim 1 and 2, it is characterized in that: described concrete catchwater ditch body (1) is trapezoidal transverse face, ditch body top width is 20cm, and inside furrow bank, ratio of slope is 1:0.3, is vertical plane outside furrow bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342527.2U CN204781274U (en) | 2015-05-25 | 2015-05-25 | Tunnel portal faces upward on limit sloping catch water drain structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342527.2U CN204781274U (en) | 2015-05-25 | 2015-05-25 | Tunnel portal faces upward on limit sloping catch water drain structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204781274U true CN204781274U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520342527.2U Active CN204781274U (en) | 2015-05-25 | 2015-05-25 | Tunnel portal faces upward on limit sloping catch water drain structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204781274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339838A (en) * | 2018-08-15 | 2019-02-15 | 福建陆海工程勘察设计有限公司 | A kind of reinforcement means of prestressed anchor |
| CN110777821A (en) * | 2019-11-14 | 2020-02-11 | 中钢集团马鞍山矿山研究院有限公司 | Method for treating water burst disaster of fissures of weathered rock slope |
-
2015
- 2015-05-25 CN CN201520342527.2U patent/CN204781274U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339838A (en) * | 2018-08-15 | 2019-02-15 | 福建陆海工程勘察设计有限公司 | A kind of reinforcement means of prestressed anchor |
| CN110777821A (en) * | 2019-11-14 | 2020-02-11 | 中钢集团马鞍山矿山研究院有限公司 | Method for treating water burst disaster of fissures of weathered rock slope |
| CN110777821B (en) * | 2019-11-14 | 2021-05-25 | 中钢集团马鞍山矿山研究总院股份有限公司 | Method for treating water burst disaster of fissures of weathered rock slope |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |