Side slope pre-splitting blasting device and construction method thereof
A pre-split blasting and side slope technology, applied in the field of side slope pre-split blasting devices, can solve the problems of slope collapse, rock mass loosening and rupture, and slope damage, etc. The effect of reducing vibration hazards
Inactive Publication Date: 2020-01-17
CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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Problems solved by technology
Many mines and road slopes in our country adopt ordinary pre-splitting (smooth surface) blasting technology. After the side blasting, the slope is damaged to varying degrees, and many microcracks are formed on the side wall of the rock mass on the protected side; the blasting produces The vibration caused the microcracks formed by the previous blasting to continue to develop. Over time, the rock mass loosened and cracked, causing the slope to collapse. Therefore, it is urgent to propose a new blasting technology to solve the above problems
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0026] Examples of embodiments are shown in the drawings, wherein like or similar reference numerals denote like or similar elements or elements having same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0027] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockw...
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The invention discloses a side slope pre-splitting blasting device and a construction method thereof. The device comprises at least two energy gathering pipes, two adjacent energy gathering pipes areconnected in a sleeve mode, two oppositely arranged energy gathering holes are formed in the pipe wall of each energy gathering pipe, the energy gathering holes are arranged in the axial directions ofthe energy gathering pipes, and a centre adjustment device fixedly sleeves the pipe wall of each energy gathering pipe. According to the side slope pre-splitting blasting device and the constructionmethod thereof, the cross sections of the energy gathering pipes are provided with the energy gathering holes of arc-shaped structures so that the energy gathering effect of explosive products can beutilized to the greatest extent, after blasting, the forming effect of the slope surface of a side slope is good, explosive energy utilization rate and hole mark rate are increased, non-coupling charging is adopted in blast holes, the circle centers of the energy gathering pipes and the circle centers of the blast holes are ensured to coincide by using centre adjustment foam, then the center connecting lines of the energy gathering holes of the adjacent blast holes can be ensured to be parallel to the slope surface, the flatness of the slope surface after blasting is high, the half hole rate is far higher than that of traditional pre-splitting blasting, the vibration hazard of a main explosion area on side slope reserved rock bodies is reduced, and meanwhile, the side slope construction cost is reduced.
Description
technical field [0001] The invention relates to the technical field of slope pre-splitting blasting, in particular to a slope pre-splitting blasting device and a construction method thereof. Background technique [0002] In the rock mass excavation and blasting project, it is necessary to ensure that the excavated rock mass is fully broken, and it is also necessary to ensure that the damage to the protected rock mass is minimal. The stability of slopes has always been an important problem in open-pit excavation engineering, and blasting hazards are one of the main reasons affecting slope stability. Many mines and road slopes in our country adopt ordinary pre-splitting (smooth surface) blasting technology. After the side blasting, the slope is damaged to varying degrees, and many microcracks are formed on the side wall of the rock mass on the protected side; the blasting produces The vibration made the micro-cracks formed by the previous blasting continue to develop. Over ti...
Claims
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Login to View More IPC IPC(8): F42D1/00F42D3/04
CPCF42D1/00F42D3/04
Inventor 林飞张计璨赵彭李强王德玲徐海峰张阳光潘先锋翟清翠王晓红韩廷亮耿宏银张志刚
Owner CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST