深埋大倾角煤岩层巷道变形破坏特征与机理研究  

Research on the Deformation and Destruction Characteristics and Mechanism of Deep Buried Large Inclination Angle Coal Rock Strata Roadways

作　　者：张平 Zhang Ping(Shanxi Ningwu Dayun Huasheng Zhuangwang Coal Industry Co.,Ltd.,Shanxi Xinzhou 036000)

机构地区：[1]山西宁武大运华盛庄旺煤业有限公司,山西忻州036000

出　　处：《山东煤炭科技》2023年第6期8-10,共3页Shandong Coal Science and Technology

摘　　要：为分析深埋大倾角煤岩层中巷道围岩变形与水平煤层巷道的差异,基于FLAC^(3D)模拟对比分析了大倾角煤岩层巷道围岩的变形破坏特征与机理。结果表明:大倾角煤岩层(向左倾斜,倾角为30°)中,巷道围岩变形和塑性区分布均呈现出明显非对称特征,围岩非对称变形是其两侧的岩体结构不对称诱导应力分布不对称导致的,同时受岩层倾向和煤层强度的影响。In order to analyze the difference between the deformation of roadway surrounding rock and the horizontal coal seam roadway in the deep buried large inclination angle coal rock strata,the deformation and destruction characteristics and mechanisms of surrounding rock in large inclination angle coal rock strata roadways are compared and analyzed based on FLAC^(3D) simulation.The results show that both the deformation of surrounding rock and the distribution of plastic zone in the roadway show obvious asymmetric characteristics in the large inclination angle coal rock strata(inclined to the left,with an inclination of 30°).The asymmetric deformation of surrounding rock is caused by the asymmetry of asymmetric induction stress distribution induced by the rock mass structure on both sides of the surrounding rock.At the same time,it is affected by the inclined of the rock strata and the strength of the coal seam.

关 键 词：大倾角 煤层 巷道 FLAC^(3D) 变形 

分 类 号：TD322[矿业工程—矿井建设]