顶煤影响下围岩应力演化数值模拟分析研究  

Numerical Simulation Study on Stress Evolution of Surrounding Rock under the Influence of Top Coal

作　　者：张云宁 岳博 刘竞[2] Zhang Yunning;Yue Bo;Liu Jing(Shandong Coal Technology Research Institute of Yanzhou Mining Group Co.,Ltd.,Shandong Jining 272000;Yanzhou Coal Industry Co.,Ltd.Jining No.3 Coal Mine,Shandong Jining 272000)

机构地区：[1]兖矿集团有限公司山东煤炭技术研究所,山东济宁272000 [2]兖州煤业股份有限公司济宁三号煤矿,山东济宁272000

出　　处：《山东煤炭科技》2021年第11期229-232,共4页Shandong Coal Science and Technology

摘　　要：为了研究厚煤层条件下煤巷掘进过程中所产生的应力演化规律,使用FLAC^(3D)数值模拟软件模拟了煤巷掘进过程中不同顶煤厚度的巷道应力演化特征。煤巷在掘进过程中,随着顶煤厚度的增加,同样层位煤岩体的应力水平在持续下降,承载能力降低,且应力传递不连续。顶煤厚度越大对巷道顶板的不利影响越明显。In order to study the stress evolution law in the process of coal roadway driving under the condition of thick coal seam,the stress evolution characteristics of different top coal thickness in the process of coal roadway driving are simulated by using FLAC^(3D) numerical simulation software.In the process of coal roadway driving,with the increase of the thickness of top coal,the stress level of coal and rock mass in the same layer decreases continuously,the bearing capacity decreases,and the stress transfer is discontinuous.The greater the thickness of the top coal is,the more obvious the adverse effect on the roadway roof is.

关 键 词：厚煤层 煤巷 数值模拟 应力演化 

分 类 号：TD322[矿业工程—矿井建设]