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Analysis method for stability of strip mine side slope exploding process

An analysis method and stability technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as insufficient research on blasting process, inability to simulate blasting process, and difficulty in realizing blasting rock fragmentation process.

Active Publication Date: 2014-04-23
内蒙古白音华蒙东露天煤业有限公司
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Problems solved by technology

[0003] At present, the research on the blasting process is not enough
The research is generally based on the continuum theory, and its simulation research is difficult to realize the fragmentation process of the blasted rock mass, and it is also impossible to control the state of each broken rock block according to the actual situation, let alone simulate the blasting process at the mesoscopic level

Method used

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  • Analysis method for stability of strip mine side slope exploding process
  • Analysis method for stability of strip mine side slope exploding process
  • Analysis method for stability of strip mine side slope exploding process

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Embodiment Construction

[0054] Haizhou Open-pit Coal Mine is located 3km southeast of Fuxin Station, in Taiping District, south of Fuxin City. The whole mine covers an area of ​​26.82km 2 , of which, stope 6km 2 , 14.8km for dump site and gangue discharge plant 2 , Industrial Plaza 3.84km 2 , residential and living facilities 2.18km 2 . The maximum extent of the open-pit coalfield is W9+50m at the west end, E29+50 at the east end, 3.9km long from east to west; S5+00m at the south end, N13+00m at the north end, and 1.8km wide from north to south. The surface elevation is +165~+200m, with an average of +175m. The terrain is high in the southeast and low in the northwest. The design mining depth of the open pit mine is 350m.

[0055] A slope is 271m long horizontally (x-direction) and 157m high (z-direction). The geological conditions are complex. Sandstone, sandy mudstone, sandstone, coal seam, mudstone and sandy shale are distributed obliquely from top to bottom. The dip angle is about -15°. ...

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Abstract

The invention discloses an analysis method for stability of a strip mine side slope exploding process and belongs to the field of coal strip mining engineering. The analysis method for the stability of the strip mine side slope exploding process comprises the following steps of (1) constructing a slide slope model; (2) setting exploding parameters; (3) constructing an exploding model; (4) performing slide slope stability analysis on above explosions. A result shows that the upper layer sandstone is stable after the above explosions, namely the slope top is stable, the lower layer sand stone and the sandy mudstone are damaged in a certain degree, landslides in large areas are not occurred, and the landslides are within a controlled range. The analysis method for the stability of the strip mine side slope exploding process shows that the upper layer sandstone is stable after the above explosions, namely the slope top is stable, the lower layer sand stone and the sandy mudstone are damaged in a certain degree, landslides in large areas are not occurred, and the landslides are within a controlled range.

Description

technical field [0001] The invention relates to a coal open-pit mining project, in particular to a method for analyzing the stability of an open-pit mine slope blasting process. Background technique [0002] The rock mass will be broken and damaged under the action of blasting, and its action principle is generally considered to be the result of the joint action of blasting shock wave, stress wave and blasting gas. First, the compressive stress generated by the explosion crushes the rock, then the circumferential tensile stress and the stress of the strain wave break the rock, and finally the expansion of the explosive gas expands the rock crack, and the corresponding blasting area is divided into crushing area, fracture area, and fracture area. area, vibration area. The radius of the crushing zone is generally 3-7R, and the radius of the rupture zone is generally 8-150R, where R is the radius of the blast hole. Therefore, the rupture area is the main part of the engineeri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 周玉祥李莹莹崔铁军宋子岭周玉民赵晓亮周扬罗根华
Owner 内蒙古白音华蒙东露天煤业有限公司
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