CN208269760U - A kind of slope blasting Rolling Stone deceleration blocking protective device - Google Patents
A kind of slope blasting Rolling Stone deceleration blocking protective device Download PDFInfo
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- CN208269760U CN208269760U CN201820597749.2U CN201820597749U CN208269760U CN 208269760 U CN208269760 U CN 208269760U CN 201820597749 U CN201820597749 U CN 201820597749U CN 208269760 U CN208269760 U CN 208269760U
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Abstract
Slow down the utility model relates to a kind of slope blasting Rolling Stone and stops protective device, including side slope lithosome, reverse L type rigid support, Rolling Stone protective net, fixed anchor cable, the up-hill end of the Rolling Stone protective net is fixed on side slope lithosome, and the other end is fixed on the upper of reverse L type rigid support；Described fixed anchor cable one end is fixed on side slope lithosome, and the other end is fixedly connected with reverse L type rigid support, and fixed anchor cable is tension, and fixed anchor cable is located at the upside of Rolling Stone protective net；The Rolling Stone protective net is equipped with several waste tires, and reverse L type rigid support is equipped with top setback shoulder guard, lower portion steel plate towards the side of Rolling Stone protective net, fixed anchor cable, and top setback shoulder guard is set to the top of lower portion steel plate.It by the utility model, can efficiently stop explosion Rolling Stone, effectively avoid surrounding resident by rockfall hazards, reduce the loss late of ore, improve ore recovery ratio, create good economic benefit for enterprise.
Description
Technical field
Slow down the utility model relates to a kind of slope blasting Rolling Stone and stop protective device, be a kind of explosion Rolling Stone slow down, resistance
Gear intercepts protective device, and deceleration, blocking, the interception of Rolling Stone, advantageously reduce opencut when can be used for having an opencast mining of blast working
Safe construction is realized in mountain exploitation and the harm of other engineering explosion field borehole blasting Rolling Stone brings, is belonged to slope blasting Rolling Stone and is subtracted
Speed stops protection design technical field.
Background technique
So-called Rolling Stone, refer to individual block stones because certain reason after the unstability of geologic body surface by whereabouts, rebound, jump,
The combination of one or more of the motion modes such as rolling or sliding quickly moves downwards along slope surface, finally on more gentle ground
Static get off a dynamical evolution process near band or barrier.When Rolling Stone movement causes the security of the lives and property of people,
Constitute rockfall hazards.
With the rapid development of economic construction of China, at present there are about surface mine 1500, more and more surface mines
Just gradually deeper village, cities and towns, so that the blasting environment around mine becomes more sophisticated, explosion endangers risk factor not
It is disconnected to be promoted, directly affect the living environment of the common people around mine.When wherein side slope opencut perforated blasting is exploited, explosion is generated
Rolling Stone is Major Risk Factors, if it cannot be effectively controlled, easily causes shotfiring safety accident, can not only threaten mine
The security of the lives and property of surrounding resident, also by the serious safety production efficiency for restricting mining enterprise.
Generally for the generation for avoiding Rolling Stone accident, it is ensured that the life security of stone pit surrounding resident and the production peace of enterprise
Entirely, it is often stayed around strip pit and sets the not exploitation of certain side slope ore resource, cause the waste of vast resources,
The decline of ore extraction rate directly affects the economic benefit of bargh.
Utility model content
The purpose of this utility model is aiming at existing deficiency, in order to effectively control the harm of explosion Rolling Stone, with
It ensures the security of the lives and property of resident, promotes the safety coefficient and productivity effect of enterprise's operation, provide a kind of slope blasting rolling
Stone, which slows down, stops protective device.
The purpose of this utility model is achieved in that a kind of slope blasting Rolling Stone slows down and stops protective device, including side
Slope lithosome, the top of side slope lithosome is blasting excavation region, at the side slope lithosome upward slope close to blasting excavation region
It is reserved with stone dam ditch；It is characterized by also including reverse L type rigid support, Rolling Stone protective net, fixed anchor cable, reverse L type rigid supports
Lower end is fixed in the side slope lithosome slope surface of side slope lithosome bottom of slope；
The up-hill end of the Rolling Stone protective net is fixed on the side slope lithosome between stone dam ditch, reverse L type rigid support, separately
The upper of reverse L type rigid support is fixed in one end；Described fixed anchor cable one end be fixed on stone dam ditch, Rolling Stone protective net up-hill end it
Between side slope lithosome on, the other end is fixedly connected with reverse L type rigid support, and fixed anchor cable is tension, and fixed anchor cable
It is higher than the fixed connection place of Rolling Stone protective net and reverse L type rigid support, fixed anchor cable with the fixed connection place of reverse L type rigid support
Positioned at the upside of Rolling Stone protective net；
The Rolling Stone protective net is equipped with several waste tires, and reverse L type rigid post is towards Rolling Stone protective net, fixed anchor cable
Side is equipped with top setback shoulder guard, lower portion steel plate, and top setback shoulder guard is set to the upper of lower portion steel plate
Portion.
The reverse L type rigid support includes slope aspect rigid support, the vertical rigidity branch being fixedly connected with slope aspect rigid support
Side slope lithosome is fixed in the slope surface of side slope lithosome bottom of slope in column, vertical rigid support lower end；
The top setback shoulder guard fixation with steel wire is in slope aspect rigid support towards Rolling Stone protective net, fixed anchor cable
The upper lateral part of side and vertical rigid support towards Rolling Stone protective net, fixed anchor cable, lower portion steel plate fixation with steel wire
In a side lower part of the vertical rigid support towards Rolling Stone protective net, fixed anchor cable.
The up-hill end of the Rolling Stone protective net is fixed in side slope lithosome with the second Short bolt, other end fixation with steel wire
In on the vertical rigid support of reverse L type rigid support.
The fixed anchor cable is fixed in side slope lithosome with the first Short bolt, and the other end is fixed on reverse L type rigid support
Slope aspect rigid support, vertical rigid support junction.
On the reverse L type rigid support, slope aspect rigid support, vertical rigid support junction top setback shoulder guard
With fixed angle bar reinforcement of weld.
On Rolling Stone protective net, waste tire is with waste tire neighbor distance for several waste tire fixations with steel wire
50cm。
The Rolling Stone protective net is made of reinforced mesh overlap joint, and the size of reinforced mesh is 2m × 2m, two neighboring reinforcing bar
Mesh sheet lap of splice 20cm, the mesh of reinforced mesh are the rhombic quadrangles mesh of 10cm × 10cm.
Stone hole is preset on the side slope lithosome, the vertical rigid support of reverse L type rigid support is embedded to side slope lithosome
In preset stone hole, depth of the vertical rigid support of reverse L type rigid support in side slope lithosome stone hole is 0.5m, vertical rigid
Property pillar expose side slope lithosome stone hole length be 2.5m, slope aspect rigid support extension 1m.
A kind of method that side slope explosion Rolling Stone carries out deceleration blocking protection, it is characterized in that:
Explosion occurs for the blasting excavation region at the top of side slope lithosome, and the Rolling Stone that explosion generates carries biggish kinetic energy edge
Side slope lithosome slope surface rolled to gliding, a part of Rolling Stone can fall into stone dam ditch, and another part Rolling Stone crosses stone dam ditch by solid
When having the Rolling Stone protective net of waste tire surely, waste tire and Rolling Stone protective net fully absorb Rolling Stone kinetic energy, reduce Rolling Stone
Speed；Rolling Stone after deceleration can strike the top setback protection being fixed on reverse L type rigid support if still there is remaining kinetic energy
Steel plate, top setback shoulder guard can then fully absorb the remaining kinetic energy of Rolling Stone, Rolling Stone made to become stationary at state, thus realization pair
Slope blasting Rolling Stone, which slow down, stops protection.
The structurally reasonable simple, manufacturing of the utility model is easy, is easy to use, by the utility model, a kind of side slope
Explosion Rolling Stone, which slows down, stops protective device, including reverse L type rigid support, fixed anchor cable, Rolling Stone protective net, waste tire, top
Setback shoulder guard, lower portion steel plate, fixed angle bar, the first Short bolt, the second Short bolt are composed.Side slope lithosome
Top is blasting excavation region, and after explosion generates, Rolling Stone carries biggish kinetic energy and rolls along side slope lithosome to gliding, a part
Rolling Stone can fall into the reserved stone dam ditch as first layer protection, and another part Rolling Stone may be crossed due to kinetic energy is larger
The reserved stone dam ditch of first layer protection gives up when containing Rolling Stone protective net of the Rolling Stone of a large amount of kinetic energy by being fixed with waste tire
Old tire and Rolling Stone protective net fully absorb Rolling Stone kinetic energy, can substantially reduce the speed of Rolling Stone.Rolling Stone after deceleration, if still having surplus
Remaining kinetic energy can strike the top setback shoulder guard being fixed on reverse L type rigid support, and top setback shoulder guard then can be complete
The remaining kinetic energy of hypersorption Rolling Stone, makes Rolling Stone become stationary at state.
The described descending side in stone dam ditch is arranged Rolling Stone protective net and reverse L type rigid support, and the one of Rolling Stone protective net
End is fixed on the upward slope section of slope rock mass, and the other end is fixed on reverse L type rigid support, and is fixed on Rolling Stone protective net waste and old
Tire.In the upper half of reverse L type rigid support, the interlude of reverse L type rigid support is pre- for upper setback shoulder guard fixation with steel wire
Remain for fixed Rolling Stone protective net, the fixed lower portion steel plate of reverse L type rigid support lower half rest.Lower portion is set
Steel plate is the Rolling Stone for being less than Rolling Stone protective net mesh for stop portions partial size.One end of fixed anchor cable and reverse L type rigid support
Connection, the other end are then fixed on side slope lithosome with the first Short bolt, and fixed anchor cable is tension.Fixed anchor cable is to tense
State is Rolling Stone impact in order to prevent, to destroy reverse L type rigid support stability.Slope aspect rigid support, vertical rigid support
The top setback shoulder guard of junction, which is used, fixes angle bar reinforcement of weld, the whole shock resistance energy of setback shoulder guard in raising
Power.The waste tire is that 50cm uses fixation with steel wire on Rolling Stone protective net with adjacent spacing.
Utility model device has the advantage that effect after implementing: stone dam ditch is first order protection, waste tire Rolling Stone
The second level protection that protective net, reverse L type rigid support, top setback shoulder guard are constituted, waste tire Rolling Stone protective net play
Similar to the effect of deceleration strip, Rolling Stone speed is sufficiently reduced, reduces the direct impact force to follow up device.The top of subsequent setting
Setback shoulder guard, which can still again serve to, absorbs the effect of Rolling Stone kinetic energy, until Rolling Stone completely loses kinetic energy, stops rolling.It utilizes
Fixed Bolted angle connection slope aspect and vertical top setback shoulder guard, further increase the shock resistance energy of top setback shoulder guard
Power.The device can efficiently stop explosion Rolling Stone, effectively avoid surrounding resident by rockfall hazards, reduce the loss late of ore,
Ore recovery ratio is improved, creates good economic benefit for enterprise.
Detailed description of the invention
Fig. 1 is the integral arrangement schematic diagram of the utility model.
Fig. 2 is Rolling Stone protective net waste tire arrangement schematic diagram in the utility model.
Fig. 3 is to fix angle bar in the utility model to reinforce top setback steel plate schematic diagram.
In figure: 1 blasting excavation region, 2 stone dam ditches, 3 side slope lithosomes, 4 reverse L type rigid supports, 5 first Short bolts, 6
Two Short bolts, 7 waste tires, 8 Rolling Stone protective nets, 9 fixed anchor cables, 10 fixed angle bar, 11 top setback shoulder guards, 12 lower parts
Shoulder guard.
Specific embodiment
The utility model is further described below in conjunction with attached drawing and Detailed description of the invention.
A kind of slope blasting Rolling Stone, which slows down, stops the protective device, including side slope lithosome 3, the top of side slope lithosome 3 to be
Blasting excavation region 1 is reserved with stone dam ditch 2 at 3 upward slope of side slope lithosome close to blasting excavation region 1；It further include reverse L type
Rigid support 4, Rolling Stone protective net 8, fixed anchor cable 9,4 lower end of reverse L type rigid support is fixed on close to 3 bottom of slope of side slope lithosome
In 3 slope surface of side slope lithosome.
The up-hill end of Rolling Stone protective net 8 is fixed on the side slope lithosome 3 between stone dam ditch 2, reverse L type rigid support 4, separately
The upper of reverse L type rigid support 4 is fixed in one end；Fixed 9 one end of anchor cable be fixed on stone dam ditch 2, Rolling Stone protective net 8 up-hill end it
Between side slope lithosome 3 on, the other end is fixedly connected with reverse L type rigid support 4, and fixed anchor cable 9 is tension, and fixed anchor
The fixed connection place of rope 9 and reverse L type rigid support 4 is higher than the fixed connection place of Rolling Stone protective net 8 and reverse L type rigid support 4, Gu
Determine the upside that anchor cable 9 is located at Rolling Stone protective net 8.
The Rolling Stone protective net 8 is equipped with several waste tires 7, and reverse L type rigid post 4 is towards Rolling Stone protective net 8, fixed anchor
The side of rope 9 is equipped with top setback shoulder guard 11, lower portion steel plate 12, and it is anti-that top setback shoulder guard 11 is set to lower part
Protect the top of steel plate 12.
Further, reverse L type rigid support 4 is fixedly connected vertical including slope aspect rigid support, with slope aspect rigid support
Side slope lithosome 3 is fixed in the slope surface of 3 bottom of slope of side slope lithosome in rigid support, vertical rigid support lower end；Top wave
Roll over shoulder guard 11 with fixation with steel wire slope aspect rigid support towards Rolling Stone protective net 8, fixed anchor cable 9 side and it is vertical just
Property a upper lateral part of the pillar towards Rolling Stone protective net 8, fixed anchor cable 9, lower portion steel plate 12 is with fixation with steel wire in vertical rigidity
A side lower part of the pillar towards Rolling Stone protective net 8, fixed anchor cable 9.
The up-hill end of Rolling Stone protective net 8 is fixed in upward slope side slope lithosome 3 with the second Short bolt 6, other end steel wire
It is fixed on the vertical rigid support of reverse L type rigid support 4.Fixed anchor cable 9 is fixed on side slope lithosome 3 with the first Short bolt 5
In, the other end is fixed on the slope aspect rigid support of reverse L type rigid support 4, vertical rigid support junction.The reverse L type rigidity
On pillar 4, the fixed welding of angle bar 10 of the use of top setback shoulder guard 11 of slope aspect rigid support, vertical rigid support junction adds
Gu.
With fixation with steel wire on Rolling Stone protective net 8, waste tire 7 is several waste tires 7 with 7 neighbor distance of waste tire
50cm。
Rolling Stone protective net 8 is made of reinforced mesh overlap joint, and the size of reinforced mesh is 2m × 2m, two neighboring reinforced mesh
Lap of splice 20cm, the mesh of reinforced mesh are the rhombic quadrangles mesh of 10cm × 10cm.
Stone hole is preset on side slope lithosome 3, reverse L type rigid support 4 is embedded in the preset stone hole of side slope lithosome 3, reverse L
Depth of the type rigid support 4 in 3 stone hole of side slope lithosome is 0.5m, and reverse L type rigid support 4 exposes 3 stone hole of side slope lithosome
Length be 2.5m, extension 1m.
When in use, when explosion occurs for the blasting excavation region 1 at 3 top of side slope lithosome, the Rolling Stone that explosion generates is carried
Biggish kinetic energy is rolled along 3 slope surface of side slope lithosome to gliding, and a part of Rolling Stone can fall into stone dam ditch 2, and another part Rolling Stone is got over
When crossing Rolling Stone protective net 8 of the stone dam ditch 2 by being fixed with waste tire 7, waste tire 7 and Rolling Stone protective net 8 fully absorb rolling
Stone kinetic energy reduces the speed of Rolling Stone；Rolling Stone after deceleration can strike if still there is remaining kinetic energy and be fixed on reverse L type rigidly branch
Top setback shoulder guard 11 on column 4, top setback shoulder guard 11 can then fully absorb the remaining kinetic energy of Rolling Stone, make Rolling Stone
State is become stationary at, so that realizing that side slope explosion Rolling Stone slow down stops protection.
As shown in Figure 1, the device is by reverse L type rigid support 4, fixed anchor cable 9, Rolling Stone protective net 8, waste tire 7, top
Setback shoulder guard 11, lower portion steel plate 12, the first Short bolt 5, the second Short bolt 6, fixed angle bar 10 are composed.
In design, the ladder of bottom width 1m, depth 3m, top width 2m can be set on the slope close to blasting excavation region 1
Shape reserves stone dam 2, and reserved stone dam 2 is equivalent to first order protection.
In design, 7 Rolling Stone protective net 8 of waste tire, Rolling Stone protection can be set in reserved 2 descending appropriate location of stone dam
Net 8 and side slope surface angle are 15-35 degree, and 8 up-hill end of Rolling Stone protective net is fixed on side slope lithosome 3 with the second Short bolt 6,
Other end fixation with steel wire is on reverse L type rigid support 4, arrangement and length are as follows: be vertically arranged upwards from midpoint to midpoint
10—15cm.One end of fixed anchor cable 9 is connect with reverse L type rigid support 4, and the other end of fixed anchor cable 9 is solid with the first Short bolt 5
Due in side slope lithosome 3, fixed anchor cable 9 is tension.4 length 3m of reverse L type rigid support, slope aspect extension are 1m,
Depth of burying 0.5m is embedded on side slope lithosome 3, is fixed using concreting.
Top setback shoulder guard 11 is fixed on the upper half of reverse L type rigid support 4 by the way of steel reinforcement connection
Portion, lower portion steel plate 12 is same by the way of steel reinforcement connection, is fixed on the lower half of reverse L type rigid support 4.In reality
Under the condition of construction of border, the distribution proportion up and down of top setback shoulder guard 11 and lower portion steel plate 12 can be appropriately adjusted.
The diameter of fixed anchor cable 9 is 12mm, and 5 length of the first Short bolt is 0.8m, and 6 length of the second Short bolt is 0.5m.
As shown in Fig. 2, waste tire 7 is that 50cm is fixed on Rolling Stone protective net 8 using steel wire equidistant placement with adjacent spacing
On, the reinforced mesh that the size of Rolling Stone protective net 8 is 2m × 2m is formed by overlapping, two neighboring reinforced mesh lap of splice 20cm,
Mesh is the rhombic quadrangles mesh of 10cm × 10cm.
As shown in figure 3, welding manner of the fixed angle bar 10 using manual electric arc welding, reinforcement of weld is in slope aspect and vertically upper
11 junction of portion's setback shoulder guard.
Claims (8)
1. a kind of slope blasting Rolling Stone, which slows down, stops protective device, including side slope lithosome (3), the top of side slope lithosome (3)
For blasting excavation region (1), stone dam ditch (2) are reserved at side slope lithosome (3) upward slope close to blasting excavation region (1)；
It is characterized by also including reverse L type rigid support (4), Rolling Stone protective net (8), fixed anchor cable (9), reverse L type rigid supports (4)
Lower end is fixed in side slope lithosome (3) slope surface of side slope lithosome (3) bottom of slope；
The up-hill end of the Rolling Stone protective net (8) is fixed on the side slope lithosome between stone dam ditch (2), reverse L type rigid support (4)
(3) on, the other end is fixed on the upper of reverse L type rigid support (4)；Stone dam ditch (2), rolling are fixed in described fixed anchor cable (9) one end
On side slope lithosome (3) between the up-hill end of stone protective net (8), the other end is fixedly connected with reverse L type rigid support (4), Gu
Determining anchor cable (9) is tension, and fixed anchor cable (9) and the fixed connection place of reverse L type rigid support (4) are higher than Rolling Stone protective net
(8) with the fixed connection place of reverse L type rigid support (4), fixed anchor cable (9) are located at the upside of Rolling Stone protective net (8)；
The Rolling Stone protective net (8) be equipped with several waste tires (7), reverse L type rigid support (4) towards Rolling Stone protective net (8),
The side of fixed anchor cable (9) is equipped with top setback shoulder guard (11), lower portion steel plate (12), top setback shoulder guard
(11) it is set to the top of lower portion steel plate (12).
2. a kind of slope blasting Rolling Stone according to claim 1, which slows down, stops protective device, it is characterized in that: the reverse L type
The vertical rigid support that rigid support (4) includes slope aspect rigid support, is fixedly connected with slope aspect rigid support, vertical rigid support
Lower end is fixed in side slope lithosome (3) slope surface of side slope lithosome (3) bottom of slope；
The top setback shoulder guard (11) is with fixation with steel wire in slope aspect rigid support towards Rolling Stone protective net (8), fixed anchor
The upper lateral part of the side of rope (9) and vertical rigid support towards Rolling Stone protective net (8), fixed anchor cable (9), lower portion steel
Plate (12) is with fixation with steel wire in a side lower part of the vertical rigid support towards Rolling Stone protective net (8), fixed anchor cable (9).
3. a kind of slope blasting Rolling Stone according to claim 2, which slows down, stops protective device, it is characterized in that: the Rolling Stone is anti-
The up-hill end of protective net (8) is fixed in side slope lithosome (3) with the second Short bolt (6), and other end fixation with steel wire is rigid in reverse L type
On the vertical rigid support of property pillar (4).
4. a kind of slope blasting Rolling Stone according to claim 2, which slows down, stops protective device, it is characterized in that: the fixed anchor
Rope (9) is fixed in side slope lithosome (3) with the first Short bolt (5), and the other end is fixed on the slope aspect of reverse L type rigid support (4)
Rigid support, vertical rigid support junction.
5. a kind of slope blasting Rolling Stone according to claim 2, which slows down, stops protective device, it is characterized in that: the reverse L type
On rigid support (4), slope aspect rigid support, vertical rigid support junction the fixed angle bar of top setback shoulder guard (11)
(10) reinforcement of weld.
6. a kind of slope blasting Rolling Stone according to claim 1, which slows down, stops protective device, it is characterized in that: described several useless
For old tire (7) with fixation with steel wire on Rolling Stone protective net (8), waste tire (7) and waste tire (7) neighbor distance are 50cm.
7. a kind of slope blasting Rolling Stone according to claim 1, which slows down, stops protective device, it is characterized in that: the Rolling Stone is anti-
Protective net (8) is made of reinforced mesh overlap joint, and the size of reinforced mesh is 2m × 2m, the two neighboring reinforced mesh lap of splice
20cm, the mesh of reinforced mesh are the rhombic quadrangles mesh of 10cm × 10cm.
8. a kind of slope blasting Rolling Stone according to claim 2, which slows down, stops protective device, it is characterized in that: the side slope rock
Stone hole is preset on stone body (3), the vertical rigid support of reverse L type rigid support (4) is embedded to side slope lithosome (3) preset stone hole
In, the vertical rigid support of reverse L type rigid support (4) is 0.5m in the depth of side slope lithosome (3) Shi Kongzhong, vertical rigidity branch
The length that column exposes side slope lithosome (3) stone hole is 2.5m, slope aspect rigid support extension 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820597749.2U CN208269760U (en) | 2018-04-25 | 2018-04-25 | A kind of slope blasting Rolling Stone deceleration blocking protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820597749.2U CN208269760U (en) | 2018-04-25 | 2018-04-25 | A kind of slope blasting Rolling Stone deceleration blocking protective device |
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| Publication Number | Publication Date |
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| CN208269760U true CN208269760U (en) | 2018-12-21 |
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ID=64680747
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820597749.2U Active CN208269760U (en) | 2018-04-25 | 2018-04-25 | A kind of slope blasting Rolling Stone deceleration blocking protective device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426499A (en) * | 2018-04-25 | 2018-08-21 | 扬州大学 | A kind of slope blasting Rolling Stone slows down blocking protective device and its method |
| CN110455139A (en) * | 2019-08-26 | 2019-11-15 | 中建五局第三建设有限公司 | A kind of high risk zone cubic metre of earth and stone is let out can slot blasting construction method |
-
2018
- 2018-04-25 CN CN201820597749.2U patent/CN208269760U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426499A (en) * | 2018-04-25 | 2018-08-21 | 扬州大学 | A kind of slope blasting Rolling Stone slows down blocking protective device and its method |
| CN108426499B (en) * | 2018-04-25 | 2024-01-19 | 扬州大学 | Slope blasting rolling stone deceleration blocking protection device and method thereof |
| CN110455139A (en) * | 2019-08-26 | 2019-11-15 | 中建五局第三建设有限公司 | A kind of high risk zone cubic metre of earth and stone is let out can slot blasting construction method |
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