The Research On Top Coal Caving For Sub-level Caving Mining In Chao Ke Wu La Coal Mine

Thick coal seam mining is always probed in mining world. Thick coal seam and very thick coal seam are very efficiently mined by top coal caving.The main purpose of the research is to reduce waste on coal and how to mine thick coal seam in maximum extent.According to characteristics of variation of thick coal on 2#coal in Chao ke wu la coal mine,the method of thick coal mining is putted forward. Top coal caving method is decided to adopted. Under the circumstances, people must conduct theoretical analysis and research for top coal caving ability . People must particularly analysis numerous geological occurrence factors that can impact on top coal caving ability. At the same time, people must particularly analysis mining process parameters that can impact on top coal caving ability. People also use UDEC software to analysis top coal caving ability. People also establish numerical models to analysis top coal caving ability .Various solutions of mining thick coal seam must be simulated .People must analysis and compare with all the outcomes in the end .The best solution is determined to choose .After choosing the best solution ,people also choose mining process parameters.to a large extent ,coal extraction rate is increased .Achievement of the research is implemented.At the same time,economic benefit of coal mining is increased .