CN108426499B - Slope blasting rolling stone deceleration blocking protection device and method thereof - Google Patents
Slope blasting rolling stone deceleration blocking protection device and method thereof Download PDFInfo
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- CN108426499B CN108426499B CN201810378576.XA CN201810378576A CN108426499B CN 108426499 B CN108426499 B CN 108426499B CN 201810378576 A CN201810378576 A CN 201810378576A CN 108426499 B CN108426499 B CN 108426499B
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- 239000004575 stone Substances 0.000 title claims abstract description 123
- 238000005096 rolling process Methods 0.000 title claims abstract description 108
- 238000005422 blasting Methods 0.000 title claims abstract description 44
- 230000000903 blocking effect Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 104
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 239000010920 waste tyre Substances 0.000 claims description 16
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 14
- 238000005065 mining Methods 0.000 claims description 14
- 230000001174 ascending effect Effects 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 9
- 229910000746 Structural steel Inorganic materials 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 235000000396 iron Nutrition 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to a slope blasting rolling stone deceleration blocking protection device and a method thereof, wherein the device comprises a slope rock body, an inverse L-shaped rigid support column, a rolling stone protection net and fixed anchor cables, wherein the upper slope end of the rolling stone protection net is fixed on the slope rock body, and the other end of the rolling stone protection net is fixed on the inverse L-shaped rigid support column; one end of the fixed anchor cable is fixed on the slope rock body, the other end of the fixed anchor cable is fixedly connected with the reverse L-shaped rigid support column, the fixed anchor cable is in a tensioning state, and the fixed anchor cable is positioned on the upper side of the barren rock protection net; the rolling stone protection net is provided with a plurality of junked tires, one side of the reverse L-shaped rigid support column facing the rolling stone protection net and the fixed anchor cable is provided with an upper corrugated steel plate and a lower steel plate, and the upper corrugated steel plate is arranged on the upper portion of the lower steel plate. The invention can effectively prevent blasting barren rock, effectively avoid surrounding residents from suffering barren rock disasters, reduce the loss rate of ores, improve the recovery rate of ores and create good economic benefits for enterprises.
Description
Technical Field
The invention relates to a slope blasting barren rock deceleration blocking protection device and a method thereof, which are used for deceleration, blocking and interception of barren rock during surface mining blasting construction, are beneficial to reducing harm caused by blasting barren rock in the field of surface mining and other engineering blasting, and realize safe construction, and belong to the technical field of slope blasting barren rock deceleration blocking protection design.
Background
The rolling stone refers to a dynamic evolution process that individual stone blocks are quickly moved downwards along a slope through one or a combination of a plurality of movement modes such as falling, rebound, jumping, rolling or sliding after being instable from the surface of a geologic body for some reason and finally are stationary near a gentler zone or an obstacle. When the rolling stone exercise causes the life and property safety of people, the rolling stone disaster is formed.
Along with the rapid development of economic construction of China, 1500 surface mines exist at present, more and more surface mines gradually go deep into villages and towns, so that the blasting environment around the mines becomes more complex, the blasting hazard risk coefficient is continuously improved, and the living environment of common people around the mines is directly influenced. When the slope strip mine is perforated and blasted for exploitation, the blasted barren rock is a main risk factor, if the barren rock cannot be effectively controlled, blasting safety accidents are extremely easy to be caused, the life and property safety of residents around the mine can be threatened, and the safety production efficiency of mine exploitation enterprises can be severely restricted.
In order to avoid the occurrence of rock rolling accidents, the life safety of residents around a quarry and the production safety of enterprises are ensured, a certain slope ore resource is often reserved around an open-air quarry so as not to be mined, a great amount of resource waste is caused, the ore mining rate is reduced, and the economic benefit of mine enterprises is directly influenced.
Disclosure of Invention
The invention aims at overcoming the defects existing in the prior art, and provides a slope blasting barren rock deceleration blocking protection device and a method thereof for effectively controlling the damage of blasting barren rock so as to ensure the life and property safety of residents and improve the safety coefficient and the production benefit of enterprise operation.
The invention aims at realizing the aim, and discloses a slope blasting rolling stone deceleration blocking protection device, which comprises a slope rock body, wherein the top of the slope rock body is a blasting mining area, and Dan Kangou is reserved at the position of the slope rock body, which is close to the blasting mining area, on the slope; the method is characterized in that: the anti-L-shaped rigid support column is fixed on the slope surface of the slope rock body close to the slope bottom of the slope rock body at the lower end;
the upper slope end of the rolling stone protection net is fixed on a slope rock body between the Yu Dankan ditches and the reverse L-shaped rigid support posts, and the other end of the rolling stone protection net is fixed on the reverse L-shaped rigid support posts; one end of the fixed anchor cable is fixed on a Yu Dankan ditch and a slope rock body between the ascending ends of the barren rock protection net, the other end of the fixed anchor cable is fixedly connected with the reverse L-shaped rigid support, the fixed anchor cable is in a tensioning state, the fixed connection position of the fixed anchor cable and the reverse L-shaped rigid support is higher than the fixed connection position of the barren rock protection net and the reverse L-shaped rigid support, and the fixed anchor cable is positioned on the upper side of the barren rock protection net;
the rolling stone protection net is provided with a plurality of junked tires, one side of the reverse L-shaped rigid cylindrical surface towards the rolling stone protection net and the fixed anchor cable is provided with an upper corrugated steel plate and a lower steel plate, and the upper corrugated steel plate is arranged on the upper portion of the lower steel plate.
The reverse L-shaped rigid support comprises a slope rigid support and a vertical rigid support fixedly connected with the slope rigid support, and the lower end of the vertical rigid support is fixed on the slope surface of the slope rock body close to the slope bottom of the slope rock body;
the upper portion is rolled over the protection steel sheet and is fixed in slope rigidity pillar and face the side upper portion of the side of rolling stone protection network, fixed anchor rope with the steel wire, and the lower part protection steel sheet is fixed in the side lower part of the side of vertical rigidity pillar face rolling stone protection network, fixed anchor rope with the steel wire.
The ascending end of the rolling stone protection net is fixed in the ascending slope rock mass by a second short anchor rod, and the other end of the rolling stone protection net is fixed on the vertical rigid support of the reverse L-shaped rigid support by steel wires.
The fixed anchor cable is fixed in the slope rock body by a first short anchor rod, and the other end of the fixed anchor cable is fixed at the joint of the slope rigid support and the vertical rigid support of the reverse L-shaped rigid support.
And on the reverse L-shaped rigid support, the upper corrugated protection steel plate at the joint of the slope rigid support and the vertical rigid support is reinforced by welding with fixed angle irons.
The waste tires are fixed on the rolling stone protective net by steel wires, and the adjacent distance between the waste tires is 50cm.
The rolling stone protection net is formed by overlapping reinforcing steel meshes, the size of the reinforcing steel meshes is 2m multiplied by 2m, the overlapping length of two adjacent reinforcing steel meshes is 20cm, and the meshes of the reinforcing steel meshes are diamond quadrilateral meshes of 10cm multiplied by 10 cm.
The rock body of the side slope is preset with stone holes, the vertical rigid pillars of the reverse L-shaped rigid pillars are buried into the stone holes preset in the rock body of the side slope, the depth of the vertical rigid pillars of the reverse L-shaped rigid pillars in the rock body Dan Kong of the side slope is 0.5m, the exposed length of the vertical rigid pillars in the rock body Dan Kong of the side slope is 2.5m, and the overhanging length of the slope rigid pillars is 1m.
A method for carrying out deceleration blocking protection on a side slope blasting rolling stone is characterized by comprising the following steps:
when the blasting mining area at the top of the slope rock body is blasted, the rolling stones generated by blasting carry larger kinetic energy to slide downwards along the slope surface of the slope rock body, one part of the rolling stones can fall into a ridge groove, and the other part of the rolling stones pass through the rolling stone protection net fixed with the waste tires beyond the ridge groove, so that the waste tires and the rolling stone protection net fully absorb the rolling stones Dan Dongneng, and the speed of the rolling stones is reduced; if the residual kinetic energy of the decelerated rolling stones still exists, the decelerated rolling stones can strike the upper corrugated protection steel plates fixed on the reverse L-shaped rigid support columns, and the upper corrugated protection steel plates can completely absorb the residual kinetic energy of the rolling stones, so that the rolling stones are in a static state, and the slope blasting rolling stones are decelerated and blocked for protection.
The invention has the advantages of reasonable and simple structure, easy production and manufacture and convenient use, and the slope blasting rolling stone deceleration blocking protection device comprises an inverse L-shaped rigid support column, a fixed anchor rope, a rolling stone protection net, waste tires, an upper corrugation protection steel plate, a lower protection steel plate, fixed angle irons, a first short anchor rod and a second short anchor rod. The roof of side slope rock body is the blasting exploitation district, and the back is produced in the blasting, and the barren rock carries great kinetic energy and rolls along side slope rock body downwardly, and some barren rock can fall into and reserve Dan Kangou as first layer protection, and another part barren rock probably because the great reason of kinetic energy, when crossing the barren rock protection network of first layer protection, the barren tire and barren rock protection network fully absorb the barren rock kinetic energy when the barren rock that contains a large amount of kinetic energy is fixed with the barren tire, can greatly reduced the speed of barren rock. If the residual kinetic energy of the decelerated rolling stone still exists, the rolling stone can strike an upper corrugated protection steel plate fixed on the reverse L-shaped rigid support, and the upper corrugated protection steel plate can completely absorb the residual kinetic energy of the rolling stone, so that the rolling stone is in a static state.
The anti-L-shaped rock protection net is characterized in that a rock protection net and an anti-L-shaped rigid support are arranged on one side of a downhill of a rock ridge ditch, one end of the rock protection net is fixed on an uphill section of a slope rock body, the other end of the rock protection net is fixed on the anti-L-shaped rigid support, and waste tires are fixed on the rock protection net. The upper corrugated steel plate is fixed on the upper half part of the reverse L-shaped rigid support column by steel wires, and the middle section of the reverse L-shaped rigid support column is reserved for fixing a rolling stone protection net, and the spare part of the lower half part of the reverse L-shaped rigid support column is used for fixing the lower protection steel plate. The lower protective steel plate is arranged for blocking the rolling stones with the particle sizes smaller than the mesh holes of the rolling stone protective net. One end of the fixed anchor cable is connected with the reverse L-shaped rigid support, and the other end of the fixed anchor cable is fixed on the slope rock body by a first short anchor rod, and the fixed anchor cable is in a tensioning state. The fixed anchor cable is in a tensioned state to prevent the impact of rolling stones, thereby damaging the stability of the reverse L-shaped rigid support column. The upper portion of the junction of the slope rigid support and the vertical rigid support is welded and reinforced by the fixed angle iron, so that the overall impact resistance of the upper buckling protection steel plate is improved. The waste tires are fixed on the rolling stone protective net by adopting steel wires with the adjacent distance of 50cm.
The device has the following advantages after implementation: dan Kangou is the first level protection, and junked tire rolling stone protection network, anti-L rigid support, upper portion are rolled over the second level protection that the protection steel sheet constitutes, and junked tire rolling stone protection network plays the effect of similar to the deceleration strip, fully reduces the rolling stone speed, reduces the direct impact force to subsequent device. The upper corrugation protection steel plate arranged subsequently still can play a role in absorbing kinetic energy of the rolling stone again until the rolling stone completely loses the kinetic energy, and rolling is stopped. The fixed angle steel is used for connecting the slope direction and the vertical upper portion corrugated steel plate, so that the impact resistance of the upper portion corrugated steel plate is further improved. The device can effectively prevent blasting barren rock, effectively avoid surrounding residents from suffering barren rock disasters, reduce the loss rate of ores, improve the ore recovery rate, and create good economic benefits for enterprises.
Drawings
Fig. 1 is a schematic diagram of the overall structural arrangement of the present invention.
FIG. 2 is a schematic diagram of the arrangement of junked tires of a rolling stone protection net in the invention.
FIG. 3 is a schematic view of a fixed angle iron reinforced upper corrugated steel plate in accordance with the present invention.
In the figure: the method comprises the following steps of 1 blasting mining area, 2 stone ridge ditches, 3 side slope rock bodies, 4 reverse L-shaped rigid struts, 5 first short anchor rods, 6 second short anchor rods, 7 waste tires, 8 rolling stone protective nets, 9 fixed anchor ropes, 10 fixed angle irons, 11 upper corrugated protection steel plates and 12 lower protection steel plates.
Detailed Description
The invention is further described with reference to the drawings and the accompanying description.
The side slope blasting rolling stone deceleration blocking protection device comprises a side slope rock body 3, wherein the top of the side slope rock body 3 is a blasting mining area 1, and a stone ridge ditch 2 is reserved at the ascending slope of the side slope rock body 3 close to the blasting mining area 1; the anti-L-shaped rigid support post is characterized by further comprising an anti-L-shaped rigid support post 4, a rolling stone protective net 8 and a fixed anchor rope 9, wherein the lower end of the anti-L-shaped rigid support post 4 is fixed on the slope surface of the slope rock body 3 close to the slope bottom of the slope rock body 3.
The upper slope end of the barren rock protection net 8 is fixed on the slope rock body 3 between the Yu Dankan ditch 2 and the reverse L-shaped rigid support 4, and the other end is fixed on the reverse L-shaped rigid support 4; one end of the fixed anchor rope 9 is fixed on the slope rock body 3 between the ridge ditch 2 and the ascending end of the barren rock protection net 8, the other end is fixedly connected with the reverse L-shaped rigid support 4, the fixed anchor rope 9 is in a tensioning state, and the fixed connection position of the fixed anchor rope 9 and the reverse L-shaped rigid support 4 is higher than the fixed connection position of the barren rock protection net 8 and the reverse L-shaped rigid support 4, and the fixed anchor rope 9 is positioned on the upper side of the barren rock protection net 8.
The rolling stone protection net 8 is provided with a plurality of junked tires 7, one side of the reverse L-shaped rigid column 4 facing the rolling stone protection net 8 and the fixed anchor cable 9 is provided with an upper corrugated steel plate 11 and a lower corrugated steel plate 12, and the upper corrugated steel plate 11 is arranged on the upper part of the lower corrugated steel plate 12.
Further, the reverse L-shaped rigid support column 4 comprises a slope rigid support column and a vertical rigid support column fixedly connected with the slope rigid support column, wherein the lower end of the vertical rigid support column is fixed on the slope surface of the slope rock body 3, which is close to the slope bottom of the slope rock body 3; the upper corrugated steel plate 11 is fixed on the upper part of one side of the slope rigid support column facing the rolling stone protection net 8 and the fixed anchor rope 9 and one side of the vertical rigid support column facing the rolling stone protection net 8 and the fixed anchor rope 9 by steel wires, and the lower steel plate 12 is fixed on the lower part of one side of the vertical rigid support column facing the rolling stone protection net 8 and the fixed anchor rope 9 by steel wires.
The ascending end of the barren rock protection net 8 is fixed in the ascending slope rock body 3 by a second short anchor rod 6, and the other end is fixed on the vertical rigid support of the reverse L-shaped rigid support 4 by steel wires. The fixed anchor rope 9 is fixed in the slope rock body 3 by a first short anchor rod 5, and the other end is fixed at the junction of the slope rigid support and the vertical rigid support of the reverse L-shaped rigid support 4. And on the reverse L-shaped rigid support column 4, an upper corrugated protection steel plate 11 at the joint of the slope rigid support column and the vertical rigid support column is welded and reinforced by a fixed angle iron 10.
A plurality of junked tires 7 are fixed on the rolling stone protective net 8 by steel wires, and the adjacent distance between the junked tires 7 and the junked tires 7 is 50cm.
The rolling stone protection net 8 is formed by overlapping reinforcing steel meshes, the size of the reinforcing steel meshes is 2m multiplied by 2m, the overlapping length of two adjacent reinforcing steel meshes is 20cm, and the meshes of the reinforcing steel meshes are diamond quadrilateral meshes of 10cm multiplied by 10 cm.
The side slope rock body 3 is provided with a preset stone hole, the reverse L-shaped rigid support column 4 is buried into the preset stone hole of the side slope rock body 3, the depth of the reverse L-shaped rigid support column 4 in the stone hole of the side slope rock body 3 is 0.5m, the length of the reverse L-shaped rigid support column 4 exposed out of the stone hole of the side slope rock body 3 is 2.5m, and the extending length is 1m.
When the side slope rock body 3 is used, when the blasting mining area 1 at the top of the side slope rock body 3 is blasted, the rolling stones generated by blasting carry larger kinetic energy to slide downwards along the slope surface of the side slope rock body 3, one part of the rolling stones can fall into the stone ridge groove 2, and the other part of the rolling stones pass through the rolling stone protection net 8 fixed with the waste tires 7 beyond the stone ridge groove 2, and the waste tires 7 and the rolling stone protection net 8 fully absorb the rolling stones Dan Dongneng, so that the rolling stone speed is reduced; if the residual kinetic energy of the decelerated rolling stones still exists, the decelerated rolling stones can strike the upper corrugated protection steel plates 11 fixed on the reverse L-shaped rigid support columns 4, and the upper corrugated protection steel plates 11 can completely absorb the residual kinetic energy of the rolling stones, so that the rolling stones are in a static state, and the deceleration blocking protection of the slope blasting rolling stones is realized.
As shown in figure 1, the device is formed by combining an inverse L-shaped rigid support column 4, a fixed anchor rope 9, a rolling stone protective net 8, a junked tire 7, an upper corrugated steel plate 11, a lower steel plate 12, a first short anchor rod 5, a second short anchor rod 6 and a fixed angle iron 10.
In design, a trapezoid reserved stone bank 2 with the bottom width of 1m, the depth of 3m and the top width of 2m can be arranged on a lower slope close to the blasting mining area 1, and the reserved stone bank 2 is equivalent to first-stage protection.
When designing, can reserve stone bank 2 downhill suitable position and set up junked tire 7 roll stone protection network 8, roll stone protection network 8 is 15-35 degrees with the slope angle, and roll stone protection network 8 uphill end is fixed on slope rock body 3 with second short stock 6, and the other end is fixed in on the anti-L rigid support 4 with the steel wire, and arrangement mode and length are: and is vertically arranged for 10-15 cm from midpoint to midpoint. One end of the fixed anchor rope 9 is connected with the reverse L-shaped rigid support column 4, the other end of the fixed anchor rope 9 is fixed in the slope rock body 3 by the first short anchor rod 5, and the fixed anchor rope 9 is in a tensioning state. The reverse L-shaped rigid support column 4 has the length of 3m, the slope outward extension length of 1m and the burying depth of 0.5m, is buried on the side slope rock body 3 and is fixed by adopting concrete pouring.
The upper corrugated steel plate 11 is fixed to the upper half of the inverted-L-shaped rigid column 4 by means of steel wire reinforcement connection, and the lower corrugated steel plate 12 is fixed to the lower half of the inverted-L-shaped rigid column 4 by means of steel wire reinforcement connection. In the actual construction, the upper and lower distribution ratios of the upper and lower corrugated steel plates 11 and 12 may be appropriately adjusted.
The diameter of the fixed anchor rope 9 is 12mm, the length of the first short anchor rod 5 is 0.8m, and the length of the second short anchor rod 6 is 0.5m.
As shown in fig. 2, the waste tires 7 are fixed on the rolling stone protection net 8 at an adjacent interval of 50cm by adopting steel wires which are equidistantly arranged, the rolling stone protection net 8 is formed by overlapping reinforcing steel meshes with the size of 2m multiplied by 2m, the overlapping length of two adjacent reinforcing steel meshes is 20cm, and the meshes are diamond quadrilateral meshes with the size of 10cm multiplied by 10 cm.
As shown in fig. 3, the fixed angle iron 10 is welded and reinforced at the joint of the slope direction and the vertical upper corrugated steel plate 11 by adopting a manual arc welding mode.
Claims (6)
1. The side slope blasting rolling stone deceleration blocking protection device comprises a side slope rock body (3), wherein the top of the side slope rock body (3) is a blasting mining area (1), and Dan Kangou (2) is reserved at the position, close to the blasting mining area (1), of the side slope rock body (3) on the upward slope; the method is characterized in that: the anti-L-shaped rock slope is characterized by further comprising an anti-L-shaped rigid support column (4), a rolling stone protection net (8) and a fixed anchor rope (9), wherein the lower end of the anti-L-shaped rigid support column (4) is fixed on the slope surface of the slope rock body (3) close to the slope bottom of the slope rock body (3);
the upper slope end of the barren rock protection net (8) is fixed on the slope rock body (3) between the Yu Dankan ditch (2) and the reverse L-shaped rigid support (4), and the other end of the barren rock protection net is fixed on the reverse L-shaped rigid support (4); one end of the fixed anchor rope (9) is fixed on the slope rock body (3) between the Yu Dankan ditch (2) and the ascending side end of the rolling stone protection net (8), the other end of the fixed anchor rope is fixedly connected with the reverse L-shaped rigid support (4), the fixed anchor rope (9) is in a tensioning state, and the fixed connection position of the fixed anchor rope (9) and the reverse L-shaped rigid support (4) is higher than the fixed connection position of the rolling stone protection net (8) and the reverse L-shaped rigid support (4), and the fixed anchor rope (9) is positioned on the upper side of the rolling stone protection net (8);
the rolling stone protection net (8) is provided with a plurality of junked tires (7), one side of the reverse L-shaped rigid support column (4) facing the rolling stone protection net (8) and the fixed anchor cable (9) is provided with an upper corrugated steel plate (11) and a lower steel plate (12), and the upper corrugated steel plate (11) is arranged on the upper part of the lower steel plate (12);
the reverse L-shaped rigid support (4) comprises a slope rigid support and a vertical rigid support fixedly connected with the slope rigid support, wherein the lower end of the vertical rigid support is fixed on the slope surface of the slope rock body (3) close to the slope bottom of the slope rock body (3);
the upper corrugated steel plate (11) is fixed on one side of the slope rigid support column facing the rolling stone protection net (8) and the fixed anchor cable (9) and on the upper part of one side of the vertical rigid support column facing the rolling stone protection net (8) and the fixed anchor cable (9) by steel wires, and the lower steel plate (12) is fixed on the lower part of one side of the vertical rigid support column facing the rolling stone protection net (8) and the fixed anchor cable (9) by steel wires;
the ascending end of the barren rock protection net (8) is fixed in the slope rock body (3) by a second short anchor rod (6), and the other end is fixed on a vertical rigid support of the reverse L-shaped rigid support (4) by steel wires;
the fixed anchor cable (9) is fixed in the slope rock body (3) by a first short anchor rod (5), and the other end of the fixed anchor cable is fixed at the joint of the slope rigid support and the vertical rigid support of the reverse L-shaped rigid support (4).
2. A slope blasting rolling stone deceleration blocking protection device according to claim 1, characterized in that: and on the reverse L-shaped rigid support (4), the upper portion of the joint of the slope rigid support and the vertical rigid support is welded and reinforced by a fixed angle iron (10).
3. A slope blasting rolling stone deceleration blocking protection device according to claim 1, characterized in that: the waste tires (7) are fixed on the rolling stone protective net (8) through steel wires, and the adjacent distance between the waste tires (7) and the waste tires (7) is 50cm.
4. A slope blasting rolling stone deceleration blocking protection device according to claim 1, characterized in that: the rolling stone protection net (8) is formed by overlapping reinforcing steel meshes, the size of the reinforcing steel meshes is 2m multiplied by 2m, the overlapping length of two adjacent reinforcing steel meshes is 20cm, and the meshes of the reinforcing steel meshes are diamond quadrilateral meshes of 10cm multiplied by 10 cm.
5. A slope blasting rolling stone deceleration blocking protection device according to claim 1, characterized in that: dan Kong is preset on the slope rock body (3), the vertical rigid support columns of the reverse L-shaped rigid support columns (4) are buried in Dan Kong preset on the slope rock body (3), the depth of the vertical rigid support columns of the reverse L-shaped rigid support columns (4) in the slope rock body (3) Dan Kong is 0.5m, the length of the vertical rigid support columns exposed out of the slope rock body (3) Dan Kong is 2.5m, and the extending length of the slope rigid support columns is 1m.
6. A method of deceleration blocking protection for a side slope blasting rock according to any one of claims 1 to 5, wherein:
when the blasting mining area (1) at the top of the slope rock body (3) is blasted, the rolling stones generated by blasting carry larger kinetic energy to slide downwards along the slope surface of the slope rock body (3), one part of the rolling stones can fall into the stone ridge groove (2), and the other part of the rolling stones pass through the rolling stone protection net (8) fixed with the waste tires (7) beyond Dan Kangou (2), the waste tires (7) and the rolling stone protection net (8) fully absorb the kinetic energy of the rolling stones, so that the speed of the rolling stones is reduced; if the residual kinetic energy of the decelerated rolling stone still exists, the decelerated rolling stone can strike an upper corrugated protection steel plate (11) fixed on the reverse L-shaped rigid support column (4), and the upper corrugated protection steel plate (11) can completely absorb the residual kinetic energy of the rolling stone to enable the rolling stone to be in a static state, so that the slope blasting rolling stone is decelerated, blocked and protected.
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| CN201810378576.XA CN108426499B (en) | 2018-04-25 | 2018-04-25 | Slope blasting rolling stone deceleration blocking protection device and method thereof |
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| CN201810378576.XA CN108426499B (en) | 2018-04-25 | 2018-04-25 | Slope blasting rolling stone deceleration blocking protection device and method thereof |
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| JP2007100484A (en) * | 2005-10-07 | 2007-04-19 | Okumiya Kogyo:Kk | Falling stone guiding unit and falling stone safety net having the same |
| JP2008019673A (en) * | 2006-07-14 | 2008-01-31 | Kasutani Fishing Net Mfg Co Ltd | Falling-rock protective fence and falling-rock protective net |
| JP2014074311A (en) * | 2012-10-05 | 2014-04-24 | Fukasawa Komusho:Kk | Stone fall protective net and stone wall protection method |
| CN104034219A (en) * | 2014-06-05 | 2014-09-10 | 中钢集团马鞍山矿山研究院有限公司 | Control technology for preventing damage caused by blasting of rolling stones |
| JP2016069932A (en) * | 2014-09-30 | 2016-05-09 | 東京製綱株式会社 | Protective net against falling object and reinforcement method of the same |
| CN208269760U (en) * | 2018-04-25 | 2018-12-21 | 扬州大学 | A kind of slope blasting Rolling Stone deceleration blocking protective device |
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|---|---|
| CN108426499A (en) | 2018-08-21 |
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