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This paper put forward the concept of green mining of coal mine, expounds the connotation and technique system of it. The theoretical basis of green mining is that the law of after mining the key strata in movement formed abscission layer and joint fractures, the seepage rule of the gas and groundwater in broken rock. The main contents of green mining technology include: water mining, mining under...
Withdrawing technology at fully mechanized working face is an important part of production and preparation, the speed of withdrawal affects the realization of high yield and efficiency of mine. In the process of fully mechanized working face being close to withdrawal roadway, advanced abutment pressure seriously affects the withdrawal roadway and double crossheading, vertical stress of the withdrawal...
Based on geodynamic zoning, according to topography and landscape features, I∼V class active faults are divided and certain local geology structure is determined. Then, the geological model of tectonic stress field is built. Incorporated with in-situ stress measurements, the numerical simulation of regional tectonic stress field is done by using self-developed Rock Mass Stress-state Analysis System...
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