近距离煤层回采巷道布置方式数值模拟研究

摘要

以西曲矿8＃煤和9＃煤近距离煤层地质条件为工程背景，综合采用现场实测与数值模拟相结合的研究方法，对布置于北二盘区下部9＃煤中的29205综采工作面回采巷道合理布置方式进行了研究。通过分析不同布置方案条件下29205综采工作面正巷所受垂直应力大小以及围岩塑性破坏范围，得出了该矿8＃煤和9＃煤近距离煤层地质条件下回采巷道的合理布置方式，数值模拟结果对于该矿8＃煤和9＃煤近距离煤层开采具有指导作用。%Takes the geological condition of No .8 and No.9 close distance coal seams in Xiqu coal seam as the engineering background , using the research methods of field measurement and numerical simulation , studies on 29205 full mechanized coal mining face mining roadway layout in the lower of north second panel .Through the analysis of surrounding rock vertical stress and plastic failure zone under the different roadway layout conditions of 29205 fully mechanized coal mining face , obtains the reasonable mining roadway layout under the geological conditions of No .8 and No.9 close distance coal seams , and the results of numerical simulation for No .8 and No.9 close distance coal seams mining play a guiding role .