CN112065475B - Tunnel rock burst energy-absorbing formula protector - Google Patents
Tunnel rock burst energy-absorbing formula protector Download PDFInfo
- Publication number
- CN112065475B CN112065475B CN202010770267.4A CN202010770267A CN112065475B CN 112065475 B CN112065475 B CN 112065475B CN 202010770267 A CN202010770267 A CN 202010770267A CN 112065475 B CN112065475 B CN 112065475B
- Authority
- CN
- China
- Prior art keywords
- protection
- top plate
- energy
- plate
- supporting
- 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.)
- Expired - Fee Related
Links
- 239000011435 rock Substances 0.000 title claims abstract description 19
- 230000001012 protector Effects 0.000 title description 2
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000001681 protective effect Effects 0.000 abstract description 24
- 238000005381 potential energy Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/002—Auxiliary devices in which the prop type is not essential
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/01—Caps for supporting mine roofs characterised by the shape of the cap, e.g. of specified cross-section
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/10—Details of mine caps for engaging the tops of pit-props, with or without retaining-plates; Retaining-plates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to an energy-absorbing type protective device for roadway rock burst, which belongs to the technical field of rock burst protective devices and comprises a U-shaped bracket, wherein an energy-absorbing device and a protective device are arranged in an inner cavity of the bracket, the protective device comprises a protective wall, a top plate and a supporting hydraulic cylinder, the cross section of the top plate is in a semicircular arc shape, two ends of the top plate are fixedly connected with sliding blocks, the sliding blocks are connected with the inner walls of the two protective walls in a sliding manner, the lower end surfaces of the sliding blocks are fixedly connected with guide pillars at equal intervals, the energy-absorbing device comprises a compression spring and a supporting sleeve, the compression spring is sleeved on the guide pillars, two ends of the compression spring are respectively fixedly connected with the lower end surfaces of the sliding blocks and the upper end surface of the supporting sleeve, and the upper end surface of the supporting sleeve is provided with a sliding hole in sliding fit with the guide pillars; the compression spring plays a supporting role for the top plate, and when the top plate moves downwards after receiving impact, the impact energy is converted into potential energy of the spring, so that the purpose of absorbing the impact energy is achieved.
Description
Technical Field
The invention relates to the technical field of rock burst protection devices, in particular to an energy-absorbing type roadway rock burst protection device.
Background
Coal in China is mainly underground mining, and a roadway is required to be excavated underground, wherein the roadway is a drilled passage between the ground surface and an ore body and is used for transporting ore, ventilating, draining water, pedestrians and the like. Sudden failure, called rock burst, can occur in the surrounding rock near the air. Rock burst is a great risk factor in the coal mining process, not only can cause loss to enterprise production, but also seriously threatens the life safety of workers. So in order to avoid dangerous emergence, the tunnel inner chamber need set up supporting device, selects for use the U type steelframe to strut the tunnel usually, and U type steelframe is adapted to the long, unstable tunnel of country rock of service time. However, when the impact is large, the conventional U-shaped bracket is not provided with a device for absorbing the impact, so that when the impact ground pressure is large, the U-shaped bracket is easily damaged, and the safety of workers and equipment cannot be effectively guaranteed due to the damage to the workers.
Disclosure of Invention
The invention aims at the problems in the prior art and provides an energy-absorbing protective device for roadway rock burst, so that the loss caused by the damage of the roadway rock burst is reduced, and the energy-absorbing protective device is realized by the following technical scheme:
an energy-absorbing protective device for roadway rock burst comprises a U-shaped support, an energy-absorbing device and a protective device are arranged in an inner cavity of the support, the protective device comprises a protective wall, a top plate and a supporting hydraulic cylinder, the cross section of the top plate is in a semicircular arc shape, two ends of the top plate are fixedly connected with sliding blocks, the protective wall is provided with two inverted L-shaped protective walls, the two protective walls are respectively attached to two parallel inner side walls of the support, the top plate is connected between the two protective walls in a sliding manner, the sliding blocks at two ends of the top plate are clamped with the upper ends of the protective walls, guide pillars are fixedly connected to the lower end faces of the sliding blocks at equal intervals, the energy-absorbing device comprises a compression spring and a supporting sleeve, the compression spring is sleeved on the guide pillars, two ends of the compression spring are respectively fixedly connected with the lower end faces of the sliding blocks and the upper end face of the supporting sleeve, and sliding holes matched with the guide pillars in a sliding manner are formed in the upper end face of the supporting sleeve, the support hydraulic cylinders are arranged at equal intervals, each support hydraulic cylinder is placed in the middle of each support sleeve, and a gap is formed between the upper end of each support hydraulic cylinder and the corresponding sliding block.
The invention is further configured to: the roof salient is fixedly connected with fixed plate on the lateral wall of protective wall, the fixed plate sets up about the axis symmetry of roof, the fixed plate articulates along roof axis direction equidistant has the bracing piece, the groove that slides has been seted up at the protective wall top, the bracing piece is kept away from the one end of fixed plate and is slided and connect in the groove that slides.
The invention is further configured to: and a graduated scale is marked on the side wall of the protection wall close to the protection component.
The invention is further configured to: and one side of the protection wall, which is close to each other, is provided with a protection component.
The invention is further configured to: the protection component is including the guard plate and the buckled plate that all are the U type, the guard plate opening is towards guard wall and open-ended both sides wall and guard wall fixed connection, buckled plate fixed connection is in the upper end of guard plate, the upper end fixed connection of buckled plate is in the lower terminal surface of sliding block.
In conclusion, the beneficial technical effects of the invention are as follows:
compression spring plays the effect of support to the roof, sliding block is under compression spring's effect during normal condition, with the lower terminal surface contact of protection wall horizontal plate, when the roof receives the impact and moves down, impact energy turns into the potential energy of spring, thereby reach the purpose of absorbing impact energy, decline in-process sliding block and support the pneumatic cylinder contact, play the supporting role to the roof, thereby avoid taking place the rock burst suddenly, lead to the support whole to collapse and cause the threat or harm equipment in the tunnel and cause the loss to staff's life safety, cause the loss of life, property safety.
Drawings
Fig. 1 is a schematic view for showing the overall structure of the present embodiment;
fig. 2 is a front view for showing the overall structure of the present embodiment.
Reference numerals: 1. a support; 2. an energy absorbing device; 21. a compression spring; 22. a support sleeve; 23. a sliding hole; 3. a guard; 31. a protective wall; 32. a top plate; 33. a support hydraulic cylinder; 34. a sliding block; 35. a guide post; 36. a fixing plate; 37. a support bar; 38. a graduated scale; 39. a sliding groove; 4. a guard assembly; 41. a protection plate; 42. a corrugated plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
As shown in fig. 1-2, the roadway rock burst energy-absorbing type protecting device disclosed by the invention comprises a U-shaped bracket 1, an energy-absorbing device 2 and a protecting device 3 are arranged in an inner cavity of the bracket 1, the protecting device 3 comprises a protecting wall 31, a top plate 32 and a supporting hydraulic cylinder 33, the cross section of the top plate 32 is in a semicircular arc shape, two ends of the top plate 32 are fixedly connected with sliding blocks 34, the protecting wall 31 is provided with two inverted L-shaped protecting walls, the two protecting walls 31 are respectively attached to two parallel inner side walls of the bracket 1, the top plate 32 is connected between the two protecting walls 31 in a sliding manner, the sliding blocks 34 at two ends of the top plate 32 are clamped with the upper ends of the protecting walls 31, the lower end surfaces of the sliding blocks 34 are fixedly connected with guide pillars 35 at equal intervals, the energy-absorbing device 2 comprises a compression spring 21 and a supporting sleeve 22, the compression spring 21 is sleeved on the guide pillars 35, two ends of the compression spring 21 are respectively fixedly connected with the lower end surfaces of the sliding blocks 34 and the upper end surfaces of the supporting sleeve 22, the upper end face of the supporting sleeve 22 is provided with a sliding hole 23 matched with the guide pillar 35 in a sliding mode, the supporting hydraulic cylinders 33 are arranged at equal intervals, each supporting hydraulic cylinder 33 is placed in the middle of each supporting sleeve 22, and a gap is formed between the upper end of each supporting hydraulic cylinder 33 and the sliding block 34. Compression spring 21 plays the effect of support to roof 32, sliding block 34 is under compression spring 21's effect during normal condition, with protective wall 31 upper end joint, when roof 32 receives the impact and moves down, impact energy converts the potential energy of spring into, thereby reach the purpose of absorbing impact energy, sliding block 34 contacts with support hydraulic cylinder 33 in the decline process, play the supporting role to roof 32, thereby avoid taking place the rock burst suddenly, lead to support 1 whole collapse and cause the threat or harm equipment in the tunnel and cause the loss to staff's life safety, cause the loss of life, property safety.
As shown in fig. 2, the top plate 32 protrudes out of the side wall of the upper end of the protection wall 31 and is fixedly connected with a fixing plate 36, the fixing plate 36 is symmetrically arranged about the axis of the top plate 32, the fixing plate 36 is hinged with supporting rods 37 at equal intervals along the axis direction of the top plate 32, the top of the protection wall 31 is provided with a sliding groove 39, and one end of the supporting rod 37 far away from the fixing plate 36 is connected in the sliding groove 39 in a sliding manner. When the top plate 32 is moved downwards by the impact force, one end of the supporting rod 37 far from the top plate 32 moves towards the direction far from the axis of the top plate 32 under the action of the top plate 32, and is abutted against the vertical side wall of the protective wall 31, so that the two parallel protective walls 31 are prevented from being inclined and collapsed towards the interior of the roadway under the action of pressure.
As shown in fig. 1, a graduated scale 38 is marked on the side wall of a protection wall 31 close to the protection component 4, and in the daily production process, the distance of downward movement of the top plate 32 can be conveniently known through the graduated scale 38, so that the worker can know the safety condition in the roadway, and thus the safety preparation is well made.
As shown in fig. 2, the protection walls 31 are provided with protection members 4 at sides close to each other. The protective component 4 can cover the compression spring 21, the supporting sleeve 22 and the supporting hydraulic cylinder 33, so that the collision of the transportation of the equipment in the roadway on the supporting sleeve 22 and the supporting hydraulic cylinder 33 is avoided, and potential safety hazards are caused. Protection component 4 is including all being the guard plate 41 and the buckled plate 42 of U type, and guard plate 41 opening is towards guard wall 31 and open-ended both sides wall and guard wall 31 fixed connection, and buckled plate 42 fixed connection is in the upper end of guard plate 41, and the upper end fixed connection of buckled plate 42 is in the lower terminal surface of sliding block 34. The corrugated plate 42 is provided to accommodate movement of the top plate 32.
Claims (5)
1. A roadway rock burst energy-absorbing type protection device comprises a U-shaped support (1) and is characterized in that an energy-absorbing device (2) and a protection device (3) are arranged in an inner cavity of the support (1), the protection device (3) comprises protection walls (31), a top plate (32) and a supporting hydraulic cylinder (33), the cross section of the top plate (32) is in a semicircular arc shape, two ends of the top plate (32) are fixedly connected with sliding blocks (34), the two protection walls (31) are in inverted L shapes, the two protection walls (31) are respectively attached to two parallel inner side walls of the support (1), the top plate (32) is connected between the two protection walls (31) in a sliding mode, the sliding blocks (34) at the two ends of the top plate (32) are clamped with the upper ends of the protection walls (31), guide pillars (35) are fixedly connected to the lower end faces of the sliding blocks (34) at equal intervals, the energy-absorbing device (2) comprises compression springs (21) and supporting sleeves (22), the compression spring (21) is sleeved on the guide pillar (35), two ends of the compression spring (21) are fixedly connected with the lower end face of the sliding block (34) and the upper end face of the supporting sleeve (22) respectively, a sliding hole (23) matched with the guide pillar (35) in a sliding mode is formed in the upper end face of the supporting sleeve (22), the supporting hydraulic cylinders (33) are arranged at equal intervals, each supporting hydraulic cylinder (33) is placed in the middle of two supporting sleeves (22), and a gap is formed between the upper end of each supporting hydraulic cylinder (33) and the sliding block (34).
2. The roadway rock burst energy-absorbing type protection device according to claim 1, wherein the top plate (32) protrudes out of the side wall of the protection wall (31) and is fixedly connected with a fixing plate (36), the fixing plate (36) is symmetrically arranged about the axis of the top plate (32), the fixing plate (36) is hinged with supporting rods (37) at equal intervals along the axis direction of the top plate (32), a sliding groove (39) is formed in the top of the protection wall (31), and one end, far away from the fixing plate (36), of each supporting rod (37) is connected into the sliding groove (39) in a sliding mode.
3. A roadway energy-absorbing impact protection device according to claim 2, wherein a graduated scale (38) is marked on the side wall of the protection wall (31) close to the protection component (4).
4. A roadway impact energy absorption type protection device according to claim 3, wherein the protection wall (31) is provided with protection components (4) at the side close to each other.
5. A roadway rock burst energy-absorbing type protection device according to claim 4, characterized in that the protection component (4) comprises a protection plate (41) and a corrugated plate (42) which are both U-shaped, the opening of the protection plate (41) faces towards the protection wall (31) and two side walls of the opening are fixedly connected with the protection wall (31), the corrugated plate (42) is fixedly connected to the upper end of the protection plate (41), and the upper end of the corrugated plate (42) is fixedly connected to the lower end face of the sliding block (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770267.4A CN112065475B (en) | 2020-08-04 | 2020-08-04 | Tunnel rock burst energy-absorbing formula protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770267.4A CN112065475B (en) | 2020-08-04 | 2020-08-04 | Tunnel rock burst energy-absorbing formula protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112065475A CN112065475A (en) | 2020-12-11 |
| CN112065475B true CN112065475B (en) | 2022-03-25 |
Family
ID=73657345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010770267.4A Expired - Fee Related CN112065475B (en) | 2020-08-04 | 2020-08-04 | Tunnel rock burst energy-absorbing formula protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112065475B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541746B (en) * | 2013-10-16 | 2015-10-14 | 辽宁工程技术大学 | A kind of energy-absorbing erosion control backboard of support |
| CN105525931B (en) * | 2014-09-28 | 2018-08-21 | 辽宁工程技术大学 | Bump circular tunnel erosion control holder device |
| CN106246206A (en) * | 2016-10-12 | 2016-12-21 | 辽宁工程技术大学 | Mine stalk semicircular arch tunnel erosion control support |
| CN206816304U (en) * | 2017-06-29 | 2017-12-29 | 李贺 | A kind of real-time gas management holder device of coal mining |
| CN210422663U (en) * | 2019-04-16 | 2020-04-28 | 刘丽峰 | Colliery is safety protection support in pit |
-
2020
- 2020-08-04 CN CN202010770267.4A patent/CN112065475B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN112065475A (en) | 2020-12-11 |
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| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220325 |
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| CF01 | Termination of patent right due to non-payment of annual fee |