CN112610252B - Rock burst flexible protective net device - Google Patents
Rock burst flexible protective net device Download PDFInfo
- Publication number
- CN112610252B CN112610252B CN202011525928.3A CN202011525928A CN112610252B CN 112610252 B CN112610252 B CN 112610252B CN 202011525928 A CN202011525928 A CN 202011525928A CN 112610252 B CN112610252 B CN 112610252B
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- edge
- reinforcing
- protective net
- supporting
- frame body
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/02—Provisional protective covers for working space for use in longwall working
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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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Abstract
The invention relates to a flexible protective net device for rock burst, which belongs to the technical field of rock burst and comprises a frame body and a support, wherein the frame body is surrounded by supporting edges and reinforcing edges, a protective net is fixed inside the frame body through the supporting edges and the reinforcing edges, and the protective net is a flexible protective net; hinge holes are formed in two ends of the supporting edge, and the support is hinged with the tail end of the frame body through the hinge holes in the tail end of the supporting edge; a piston rod of the gas spring is hinged with the front end of the frame body through a hinge hole at the front end of the supporting edge; a boss is welded in the middle of the bracket, and the tail end of the air spring rod is hinged with the boss; and a manual valve is arranged at an air outlet hole at the tail end of the air spring rod. The invention can buffer and bear the broken stones after the rock burst accident occurs, and can manually realize the lifting of the protective net at one end, therefore, the gravels on the protective net are slowly released, the cleaning mode of the gravels is simple and effective, and the occurrence of safety accidents during the cleaning of the gravels can be avoided.
Description
Technical Field
The invention belongs to the technical field of rock burst, and particularly relates to a flexible protective net device for rock burst.
Background
Rock burst is a phenomenon in which elastic deformation potential energy accumulated in a rock body is suddenly and violently released under certain conditions, so that the rock is burst and ejected. Rock burst often causes serious damage to an excavation working face, equipment damage and casualties, is one of main hidden dangers facing deep wells and mines at present, and becomes a worldwide problem in the fields of rock underground engineering and rock mechanics. At present, in order to deal with damage caused by rock burst, a supporting device is installed in a roadway to support and protect the roadway. However, the supporting device can only support the whole roadway, but the phenomenon of rock burst still exists in the gap between the supporting devices, and the burst rock threatens workers and equipment.
Based on above reason, a lot of supporting device tops can all assist installs the protection network additional now, can carry out certain stopping to the rock that bursts, but these protective network structures can only live rock pocket at present, prevent that it from injuring staff and the equipment of below, and the rock on the protection network is but hardly collected, need dismantle the whole release that can realize its rock of protection network usually. And in the process of disassembling the protective net, the safety accident that the gravels are inclined is easy to happen.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the rock burst flexible protective net device which can buffer and support broken stones after a rock burst accident occurs, and can manually realize the lifting of the protective net at one end, so that the broken stones on the protective net are slowly released, the cleaning mode of the broken stones is simple and effective, and the occurrence of safety accidents during the cleaning of the broken stones can be avoided.
A kind of rock burst flexible protective net device, including frame and support, the said frame is enclosed by supporting edge and reinforcement edge, wherein two opposite sides are supporting edges, the other two sides set up oppositely are reinforcement edges; the protective net is fixed inside the frame body through the supporting edge and the reinforcing edge, and the protective net is a flexible protective net; hinge holes are formed in two ends of the supporting edge, and the support is hinged with the tail end of the frame body through the hinge hole in the tail end of the supporting edge; a piston rod of the gas spring is hinged with the front end of the frame body through a hinge hole at the front end of the supporting edge; a boss is welded in the middle of the bracket, and the tail end of the air spring rod is hinged with the boss; and a manual valve is arranged at an air outlet hole at the tail end of the air spring rod.
The protective net is a nylon net.
The supporting edge comprises a reinforcing edge and a fixing edge, a groove is formed in the inner side of the reinforcing edge, and a bulge matched with the groove is integrally formed at the bottom of the fixing edge; the reinforcing edge is linearly provided with a plurality of first bolt holes along the length direction of the reinforcing edge, the fixing edge is provided with a second bolt hole corresponding to the first bolt hole, and after the protrusion is clamped with the groove in a matched mode, the first bolt holes are coaxial with the second bolt holes and are fastened with the reinforcing edge and the fixing edge through the matching of bolts and nuts.
The reinforcing edge is a reinforcing rod, and a plurality of hooks are linearly arranged at the top of the reinforcing rod along the length direction of the reinforcing rod; the hook can be welded or detachably arranged on the upper part of the reinforcing rod.
The reinforcing rod is characterized in that rotating shafts are arranged at two ends of the reinforcing rod, mounting holes rotatably connected with the rotating shafts are formed in two ends of the reinforcing edge, a third bolt hole is formed in two ends of the reinforcing edge, a fastening bolt is arranged in the third bolt hole, and after the fastening bolt is screwed in the third bolt hole, the fastening bolt is in close contact with the rotating shafts to lock the reinforcing rod.
Inclined plates are welded on two sides of the supporting edge, and the inclined plates extend towards the outer side of the supporting edge in an inclined upper direction at an angle of 20-30 degrees with the horizontal plane.
The invention has the beneficial effects that: the invention can well protect the rock burst event in the roadway and effectively buffer and support the collapsed gravels, thereby protecting the workers and equipment in the roadway. When needs cleared up the rubble on the protection network, only need open the front end air spring pole bottom venthole of framework, can make the framework of this side descend under the action of gravity, the framework tail end is articulated with the support, can make the framework carry the whole state that presents an slope of protection network to make the rubble on the protection network slowly roll and fall the tunnel subaerially, make things convenient for the staff to collect and transport the rubble. This device is to the simple high efficiency of rubble clearance mode on the protection network, and can not take place the danger that the rubble once only falls simultaneously, and the clearance process is more safe.
Drawings
FIG. 1 is a side view of the present invention;
FIG. 2 is a schematic view of an assembly structure of a protection net according to the present invention;
FIG. 3 is a schematic view of the connection structure of the supporting edge of the frame body according to the present invention;
wherein, the first and the second end of the pipe are connected with each other,
1-support, 2-frame, 3-protective screen, 4-supporting edge, 41-reinforcing edge, 42-fixing edge, 43-groove, 44-protrusion, 5-hinge hole, 6-boss, 7-gas spring, 8-manual valve, 9-reinforcing rod, 91-hook, 92-rotating shaft, 93-fastening bolt and 10-inclined plate.
Detailed Description
For better understanding of the present invention, the technical solutions and effects of the present invention will be described in detail by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1-2, a flexible protective net device for rock burst comprises a frame body 2 and a bracket 1, wherein the frame body 2 is an installation structure of a protective net 3, is surrounded by a supporting edge 4 and a reinforcing edge, bears the impact force, and is used as a protective device above a roadway for buffering and protecting the small rock collapse phenomenon caused by the rock burst, thereby protecting personnel and equipment in the roadway; two opposite sides of the frame body 2 are supporting sides 4, and the other two opposite sides are reinforcing sides. The protection network 3 is fixed inside framework 2 through supporting limit 4 and reinforcement limit, the protection network 3 is flexible protection network 3, and protection network 3 utilizes the flexibility of self to carry out certain buffering to falling rocks when the rock collapses to prevent that the rock from carrying out the rigidity impact to protection network 3 and causing protection network 3 to break, wherein loose state when protection network 3 available installation realizes flexible purpose, also can utilize self material to realize flexible purpose. Preferably, the protective net 3 is a nylon net, which has certain elasticity and can achieve better flexible buffering effect. Two ends of the supporting edge 4 are provided with hinge holes 5, and the support 1 is hinged with the tail end of the frame body 2 through the hinge holes 5 at the tail end of the supporting edge 4; a piston rod of the gas spring 7 is hinged with the front end of the frame body 2 through a hinge hole 5 at the front end of the supporting edge 4; a boss 6 is welded in the middle of the support 1, and the tail end of a rod of the gas spring 7 is hinged with the boss 6; a manual valve 8 is arranged at an air outlet at the tail end of the air spring 7, the manual valve 8 controls the opening and closing of the air outlet, and after the air outlet is blocked, the air spring 7 serves as a support rod with little elasticity to be used and can bear a certain weight of falling rocks; under 7 poles of air springs to framework 2's natural support state, the front end and the tail end height of support limit 4 keep unanimous, when needs put down the rubble on the protection network 3, open manual valve 8 and can discharge the compressed gas in the 7 poles of air springs to make 7 poles of air springs descend the oblique below of framework 2, slowly transfer the rubble at framework 2 top, make the rubble clearance on the protection network 3 simple and high-efficient again, and can not take place the disposable danger that falls simultaneously of rubble, the cleaning process is more safe.
Preferably, as shown in fig. 3, the supporting edge 4 includes a reinforcing edge 41 and a fixing edge 42, a groove 43 is formed on the inner side of the reinforcing edge 41, and a protrusion 44 matching with the groove 43 is integrally formed at the bottom of the fixing edge 42; the reinforcing edge 41 is linearly provided with a plurality of first bolt holes along the length direction, and the fixing edge 42 is provided with second bolt holes corresponding to the first bolt holes. The protective net 3 is arranged between the reinforcing edge 41 and the fixing edge 42, and after the protrusion 44 is matched and clamped with the groove 43, the first bolt hole and the second bolt hole are coaxial, and the reinforcing edge 41 and the fixing edge 42 are fastened through matching of a bolt and a nut. The clamping of the protrusion 44 and the groove 43 can clamp the protective net 3 in the groove 43, so that the protective net 3 is fixed, and the protective net 3 protects people and equipment in a roadway. The fixing structure can enable the protective net 3 to be stressed uniformly, thereby avoiding the phenomenon of breakage caused by single stress point of the protective net 3.
The reinforcing edge is a reinforcing rod 9, and a plurality of hooks 91 are linearly arranged at the top of the reinforcing rod 9 along the length direction of the reinforcing rod and used for hanging the protective net 3. The hooks 91 can be welded or detachably mounted on the upper part of the reinforcing bar 9, so that the position for hanging the protective net 3 can be selected, and the longitudinal tensioning degree of the protective net 3 can be adjusted.
Preferably, rotating shafts 92 are arranged at two ends of the reinforcing rod 9, mounting holes rotatably connected with the rotating shafts 92 are formed in two ends of the reinforcing edge 41, a third bolt hole is formed in the two ends of the reinforcing edge 41, a fastening bolt 93 is arranged in the third bolt hole, and after the fastening bolt 93 is screwed in the third bolt hole, the fastening bolt 93 is in close contact with the rotating shafts 92 to lock the reinforcing rod 9. After the protection net 3 is hung on the hook 91, the length direction of the protection net 3 can be adjusted by rotating the reinforcing rod 9, and the rotating shaft 92 is locked by the fastening bolt 93, so that the tightness of the protection net 3 can be adjusted.
Preferably, inclined plates 10 are welded on two sides of the support edge 4, and the inclined plates 10 extend towards the outer side of the support edge 4 and obliquely upwards at an angle of 20-30 degrees with the horizontal plane. The sloping plate 10 can guide and protect falling rocks, so that workers are prevented from being injured by the falling rocks when the operation frame body 2 descends.
When the protective net is installed, firstly, two ends of the protective net 3 are hung on the hooks 91 of the reinforcing rod 9, then the reinforcing rod 9 is rotated to enable the reinforcing rod 9 to drive the protective net 3 to rotate so as to tension the protective net, and then the two sides of the protective net 3 are fixed by utilizing the clamping fastening of the fixing edge 42 and the reinforcing edge 41. After the protective net 3 is installed, the tail end of the frame body 2 is hinged with the support 1, then the boss 6 of the support 1 is hinged with the gas spring 7 rod, and the piston rod of the gas spring 7 rod is hinged with the front end of the frame body 2.
After the protective net 3 bears broken rocks generated by rock burst accidents, the gas spring 7 can be compressed under the action of the gravity of the rocks by only manually opening the manual valve 8, so that the rocks fall into a roadway along an inclined plane. After the rocks are collected and cleaned, the gas spring 7 rod is not pressed by additional gravity, the frame body 2 is naturally supported by the recovered elasticity, and the protection of the protective net 3 on the top of the roadway can be recovered by closing the manual valve 8.
The plurality of frame bodies 2 and the supports 1 are linearly fixed in the roadway along the length direction of the roadway, so that the frame bodies 2 carrying the protective net 3 are arranged in parallel and are adjacent without gaps to realize the protection of the roadway.
Claims (5)
1. The utility model provides a rock burst flexible protection network device which characterized in that: the frame body is defined by supporting edges and reinforcing edges, wherein two opposite sides are supporting edges, and the other two oppositely arranged sides are reinforcing edges; the protective net is fixed inside the frame body through the supporting edge and the reinforcing edge, and the protective net is a flexible protective net; hinge holes are formed in two ends of the supporting edge, and the support is hinged with the tail end of the frame body through the hinge holes in the tail end of the supporting edge; a piston rod of the gas spring is hinged with the front end of the frame body through a hinge hole at the front end of the supporting edge; a boss is welded in the middle of the bracket, and the tail end of the air spring rod is hinged with the boss; a manual valve is arranged at an air outlet hole at the tail end of the air spring rod;
the protective net is a nylon net;
the supporting edge comprises a reinforcing edge and a fixing edge, a groove is formed in the inner side of the reinforcing edge, and a bulge matched with the groove is integrally formed at the bottom of the fixing edge;
the reinforcing edge is a reinforcing rod, and a plurality of hooks are linearly arranged at the top of the reinforcing rod along the length direction of the reinforcing rod;
the stiffener rod both ends all are equipped with the pivot.
2. The device of claim 1, wherein the device comprises: the reinforcing edge is linearly provided with a plurality of first bolt holes along the length direction of the reinforcing edge, the fixing edge is provided with a second bolt hole corresponding to the first bolt hole, and after the protrusion is clamped with the groove in a matched mode, the first bolt holes are coaxial with the second bolt holes and are fastened with the reinforcing edge and the fixing edge through the matching of bolts and nuts.
3. The device of claim 1, wherein the device comprises: the hook can be welded or detachably arranged on the upper part of the reinforcing rod.
4. The rock burst flexible protective net device according to claim 3, characterized in that: and mounting holes rotatably connected with the rotating shaft are formed in two ends of the reinforcing edge, a third bolt hole is formed in two ends of the reinforcing edge, a fastening bolt is arranged in the third bolt hole, and after the fastening bolt is screwed in the third bolt hole, the fastening bolt is tightly contacted with the rotating shaft to lock the reinforcing rod.
5. The device of claim 1, wherein the device comprises: inclined plates are welded on two sides of the supporting edge, and the inclined plates extend towards the outer side of the supporting edge in an inclined upper direction at an angle of 20-30 degrees with the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011525928.3A CN112610252B (en) | 2020-12-22 | 2020-12-22 | Rock burst flexible protective net device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011525928.3A CN112610252B (en) | 2020-12-22 | 2020-12-22 | Rock burst flexible protective net device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112610252A CN112610252A (en) | 2021-04-06 |
| CN112610252B true CN112610252B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011525928.3A Active CN112610252B (en) | 2020-12-22 | 2020-12-22 | Rock burst flexible protective net device |
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| CN (1) | CN112610252B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012682B (en) * | 2022-06-20 | 2023-04-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Collapse falling stone protective net structure with toughness energy dissipation function |
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| CN112610252A (en) | 2021-04-06 |
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