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Research on Parameter of Trip Mining under the Thickness Collapsible Loss

Author: WuJiaoZuo
Tutor: YuXueYi
School: Xi'an University of Science and Technology
Course: Mining engineering
Keywords: Thick Collapsible Loess Strip mining Critical layer FLAC3D Numerical Simulation Similar material simulation
CLC: TD823.8
Type: Master's thesis
Year: 2005
Downloads: 269
Quote: 3
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Abstract


As rich in coal resources of the northwest region of China , most of its surface is covered with a thick wet collapsible loess caused by underground mining , the Collapsible Loess special structure , surface movement and deformation of the surface buildings and fertile farmland harm . Under the guidance of the scientific concept of development of large-scale development of the western region is coordinated with environmental protection , research control mining collapsible loess covering layer damage is an important issue for the sustainable development of the mining area . Research is thick collapsible loess layer conditions to protect the safety of surface mining methods . In this paper, the analysis of thick collapsible loess covering layer underlying bedrock conditions there is a critical layer , the Collapsible Loess structure with collapsible characteristics of mining subsidence damage as well as the mining damage rules , the application probability density function method , comprehensive analysis of key strata theory and AHWilson coal pillar strength theory to determine the strip mining parameters under this particular condition . Applied research paper concluded the head village Pubai mine Wangjia Yao seam mining engineering examples , in order to verify the reliability of the results under the mining plan at the same time of Wang Jiayao head village similar material simulation and FLAC3D numerical simulation analysis and calculation . The results show that this comprehensive analysis to determine the method of strip mining parameters , higher reliability , increased strip mining of mining , leaving the aspect ratio to reduce the Face Moving striped number of tunneling project amount is a economically viable method has a good application value .

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CLC: > Industrial Technology > Mining Engineering > Mining > Coal mining > Underground mining methods > Mining method in the special conditions
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