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Study on Strata Behavior Regulavity by Top-caving Mining in Three Soft and Unstable Thick Deep Coal Seam

Author: HuangChunGuang
Tutor: ZhouYing
School: Henan Polytechnic University
Course: Mining engineering
Keywords: High inclined seam Damage theory Strata behavior Laws of the roof and floor of the mobile Numerical Simulation
CLC: TD32
Type: Master's thesis
Year: 2010
Downloads: 241
Quote: 2
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Abstract


Big dip \Research methods, this study in order to put the large inclination soft thick seam hydraulic prop top coal mining feasibility and key technology research engineering background , damage theory analysis , the combination of field tests and numerical simulation of underground pressure distribution law of the of mining pressure in inclined seam (35 °) top coal caving process , the roof and top coal movement law . Damage theory, the coal and rock damage and failure of the constitutive equations , analyze a supporting pressure variation and influencing factors , solving support working resistance of face different locations . Through field observations to determine the characteristics of the of stope ore pressure parameters to pressure tunnel surrounding rock deformation characteristics and pillar working resistance , dynamic load factor , and face the roof and floor were classified . The deep basis points observation and analysis of the roof and the top coal movement law , and further understanding of the mechanism of top coal development entities coal to the fissure through broken . Combined with the FLAC3D numerical simulations face stope stress and displacement distribution law , and pointed out that the focus of protection . The above findings for big dip \

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Rock pressure and rock movement
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