CN210712882U - Inclined cut type tunnel portal rockfall protection system - Google Patents
Inclined cut type tunnel portal rockfall protection system Download PDFInfo
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- CN210712882U CN210712882U CN201921698389.6U CN201921698389U CN210712882U CN 210712882 U CN210712882 U CN 210712882U CN 201921698389 U CN201921698389 U CN 201921698389U CN 210712882 U CN210712882 U CN 210712882U
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- cylindrical rubber
- rubber body
- steel wire
- star cylindrical
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Abstract
The utility model provides a beveling type tunnel portal rockfall protection system, which comprises an anchor rod, a guy cable, a groove, a steel wire mesh and a five-star cylindrical rubber body, wherein the anchor rod is arranged above the tunnel diagonal tunnel portal or in the slope surfaces at the left side and the right side, an anchoring section of the anchor rod extends into bedrock, one end of the guy cable is connected with the anchor rod, the other end of the guy cable is connected with the five-star cylindrical rubber body, the connection of the guy cable and the anchor rod and the connection of the guy cable and the five-star cylindrical rubber body can be detached, the five-star cylindrical rubber body comprises a rubber cylinder and support legs, the rubber cylinder is cylindrical, the support legs are connected with the rubber cylinder through steel wires, the five-star cylindrical rubber body comprises a plurality of support legs, digging grooves in the slope, placing a plurality of five-star cylindrical rubber bodies in the grooves, stacking the five-star cylindrical rubber bodies in the grooves, and wrapping the steel wire mesh outside the five-star cylindrical rubber bodies.
Description
Technical Field
The invention belongs to the field of railway engineering, and particularly relates to a bevel type tunnel portal rockfall protection system.
Background
When passing through mountain areas, high-speed railways or highways often pass through tunnels, particularly in sections with steep terrain at tunnel portals and deep canyons, and are often connected in a bridge-tunnel manner. The bridge-tunnel connection sections are limited by the terrain and the construction site, the side slopes and the upward slopes of the inlet and the outlet of the tunnel are high and steep, the geological conditions are severe, under the action of natural disasters such as rainwater and earthquake, dangerous rocks, falling rocks, collapse and the like can be formed, great harm is easily caused to tunnel portals and adjacent bridge projects, and the operation safety is seriously threatened. The inclined cut tunnel portal is an economic tunnel portal, but the inclined cut tunnel portal lacks the protection of the tunnel portal, and dangerous rocks and falling rocks of side slopes and ascending slopes can cause certain damage to tunnel portals or bridge engineering. Aiming at the dangerous falling rocks at the cave entrance, a common treatment method is to adopt grouted rubbles for repairing and embedding to remove the dangerous falling rocks at the cave entrance and to increase a shed tunnel or open cut tunnel structure at the tunnel cave entrance to prevent the influence of sporadic falling rocks on the structure operation safety. When dangerous rocks and rockfall exist at the tunnel portal, the side slope is steep, and the dangerous rocks and rockfall develop. When the square cleaning treatment is adopted, the square brushing amount is huge, and the treatment is difficult and serious.
The safety and driving safety of tunnel portal and bridge structure are guaranteed, and a beveling type portal protection system with good economical efficiency and simple construction is needed to be designed, so that when dangerous rocks and falling rocks of side slopes and upward slopes slide down, the beveling type portal and bridge engineering are not affected.
Disclosure of Invention
The invention aims to solve the problem that the existing oblique cut tunnel portal cannot block dangerous rocks and falling rocks, and provides an oblique cut tunnel portal rock falling protection system.
The invention is suitable for the bedrock depth of the upward slope to be less than 10 meters.
The technical scheme of the invention is as follows: the utility model provides a beveling formula portal rock fall protection system, including the stock, the cable, the slot, the wire net, five-star cylinder type rubber body, the stock is installed in tunnel mitre formula portal top or the domatic of the left and right sides, the anchor section of stock stretches into in the basement rock, the stock is connected to the one end of cable, five-star cylinder type rubber body is connected to the other end of cable, the connection of cable and stock, the cable all can be dismantled with being connected of five-star cylinder type rubber body, five-star cylinder type rubber body includes the rubber drum, the stabilizer blade, the rubber drum shape is the drum type, the stabilizer blade passes through the steel wire and is connected with the rubber drum, five-star cylinder type rubber body contains a plurality of stabilizer blade, dig the slot in domatic, place a plurality of five-star cylinder type rubber body in the slot, five-star cylinder type rubber body piles up and places in the slot, the wire net parcel is in the outside of.
The inhaul cable is made of metal wires in a winding mode and can stretch out and draw back elastically.
The steel wire mesh is woven by steel wire ropes, and buckling parts are arranged at the cross positions of the steel wire ropes.
The five-star cylindrical rubber body is a rubber prefabricated component.
The aperture of the meshes of the steel wire mesh is less than 20 cm.
After the inclined cut type tunnel portal rockfall protection system is used, when dangerous rock rockfall slips once, two options can be provided:
firstly, stones accumulated around the protection system are removed, damaged steel wire meshes, anchor rods, inhaul cables and five-star cylindrical rubber bodies are repaired, and the protection system continues to play a role;
and secondly, the connection between the stay cable and the anchor rod is disassembled, the steel wire mesh is disassembled, the five-star cylindrical rubber body is taken out, the damaged steel wire mesh, the stay cable and the five-star cylindrical rubber body are repaired, a new area is selected for installing the anchor rod, a groove is excavated, the five-star cylindrical rubber body is placed, the five-star cylindrical rubber body is wrapped by the steel wire mesh, the anchor rod and the stay cable are connected, and the protection system can continue to play a role.
The invention has the following advantages:
(1) the protective system of the invention does not need to repair and fix dangerous rockfall in a large range, provides resistance through the anchor rod, and saves the engineering quantity, thereby saving the engineering cost and the construction time.
(2) The five-star cylindrical rubber body is a prefabricated component, is manufactured in a factory, and is suitable for mountain tunnel areas with remote positions, poor construction conditions and poor construction environments.
(3) The guy cable, the five-star cylindrical rubber body and the steel wire mesh of the protection system are flexible structures, so that the kinetic energy of falling rocks can be weakened, and the oblique cut tunnel portal is protected.
(4) The protection system can be detached, after one-time falling of the stones is finished, two options can be provided, the accumulated stones are removed, or the protection system is detached and replaced by a new place for installation, the whole protection system can be reused, and resources are saved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a five-star cylindrical rubber body of the present invention;
in the figure, a tunnel inclined cut tunnel door 1, a road surface 2, a slope surface 3, a five-star cylindrical rubber body 4, a rubber cylinder 41, support legs 42, anchor rods 5, inhaul cables 6, a steel wire mesh 7 and a groove 8.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Example 1
As shown in fig. 1 and 2, the bevel cut tunnel portal rockfall protection system comprises an anchor rod 5, a stay cable 6, a groove 8, a steel wire mesh 7 and a five-star cylindrical rubber body 4, wherein the anchor rod 5 is installed above or in the slope surfaces 3 on the left side and the right side of a tunnel bevel cut tunnel portal 1, an anchoring section of the anchor rod 5 extends into a bedrock, one end of the stay cable 6 is connected with the anchor rod 5, the other end of the stay cable 6 is connected with the five-star cylindrical rubber body 4, the stay cable 6 is connected with the anchor rod 5, the stay cable 6 is connected with the five-star cylindrical rubber body 4 in a detachable manner, the five-star cylindrical rubber body 4 comprises a rubber cylinder 41 and supporting legs 42, the rubber cylinder 41 is cylindrical, the supporting legs 42 are connected with the rubber cylinder 41 through steel wires, the five-star cylindrical rubber body 4 comprises a plurality of supporting legs 42, the groove 8 is excavated in the slope surface 8, the five-star cylindrical rubber body 4 is stacked in the groove 8, the steel wire mesh 7 is wrapped outside the five-star cylindrical rubber body 4. The inhaul cable 6 is made of metal wires in a winding mode, and the inhaul cable 6 can stretch out and draw back elastically. The steel wire mesh 7 is woven by steel wire ropes, and buckling parts are arranged at the intersections of the steel wire ropes. The five-star cylindrical rubber body 4 is a rubber prefabricated component. The aperture of the meshes of the steel wire gauze 7 is less than 20 cm.
After the inclined cut type tunnel portal rockfall protection system is used, when dangerous rock rockfall slips once, two options can be provided:
firstly, stones accumulated around the protection system are removed, the damaged steel wire mesh 7, the anchor rod 5, the stay cable 6 and the five-star cylindrical rubber body 4 are repaired, and the protection system continues to play a role;
secondly, the connection of the stay cable 6 and the anchor rod 5 is disassembled, the steel wire mesh 7 is disassembled, the five-star cylindrical rubber body 4 is taken out, the damaged steel wire mesh 7, the stay cable 6 and the five-star cylindrical rubber body 4 are repaired, the anchor rod 5 is installed in a new area, the groove 8 is excavated, the five-star cylindrical rubber body 4 is placed, the five-star cylindrical rubber body 4 is wrapped by the steel wire mesh 7, the anchor rod 5 and the stay cable 6 are connected, and the protection system can continue to play a role.
Claims (4)
1. A bevel cut type tunnel portal rockfall protection system is characterized by comprising anchor rods, inhaul cables, grooves, steel wire meshes and five-star cylindrical rubber bodies, wherein the anchor rods are arranged above or in slope surfaces on the left side and the right side of a tunnel bevel cut type tunnel portal, anchoring sections of the anchor rods extend into bedrock, one end of the guy cable is connected with the anchor rod, the other end of the guy cable is connected with the five-star cylindrical rubber body, the connection of the guy cable and the anchor rod and the connection of the guy cable and the five-star cylindrical rubber body can be detached, the five-star cylindrical rubber body comprises a rubber cylinder and support legs, the rubber cylinder is cylindrical, the support legs are connected with the rubber cylinder through steel wires, the five-star cylindrical rubber body comprises a plurality of support legs, digging grooves in the slope, placing a plurality of five-star cylindrical rubber bodies in the grooves, stacking the five-star cylindrical rubber bodies in the grooves, and wrapping the steel wire mesh outside the five-star cylindrical rubber bodies.
2. The system as claimed in claim 1, wherein the pulling cable is made of a metal wire wound around the pulling cable, and the pulling cable is elastically stretchable.
3. The system of claim 1, wherein the steel wire mesh is woven from steel wire ropes, and a buckling and pressing member is installed at the intersection of the steel wire ropes.
4. The system of claim 1, wherein the five-pointed star cylinder rubber body is a rubber prefabricated member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921698389.6U CN210712882U (en) | 2019-10-11 | 2019-10-11 | Inclined cut type tunnel portal rockfall protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921698389.6U CN210712882U (en) | 2019-10-11 | 2019-10-11 | Inclined cut type tunnel portal rockfall protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210712882U true CN210712882U (en) | 2020-06-09 |
Family
ID=70965407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921698389.6U Expired - Fee Related CN210712882U (en) | 2019-10-11 | 2019-10-11 | Inclined cut type tunnel portal rockfall protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210712882U (en) |
-
2019
- 2019-10-11 CN CN201921698389.6U patent/CN210712882U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20211011 |