含软弱夹矸厚煤层巷道层位数值试验  

Numerical experiment of the roadway position in thick-coal seam with weak interlayer

作　　者：余国猛 YU Guomeng(No. Four Engineering Division,Jiangsu Mining Engineering Group ,Xuzhu 221116 ,China)

机构地区：[1]江苏矿业工程集团第四工程处西川煤矿,江苏徐州221116

出　　处：《煤矿现代化》2019年第4期110-112,共3页Coal Mine Modernization

摘　　要：为确定含软弱夹矸厚煤层巷道层位,减少夹矸对煤巷围岩承载的弱化,结合西川煤矿的具体工程地质条件,提出了六种可行的巷道层位布置方案,采用数值模拟的方法计算分析了六种巷道层位下的煤巷围岩应力场、位移场和塑性区分布规律,发现软弱夹矸是厚煤层巷道围岩控制的关键部位,软弱夹矸位于厚煤层巷道的帮部可大大减小其对厚煤层巷道围岩变形破坏的作用,该研究成果为类似条件下含夹矸厚煤层回采巷道布置提供了理论依据。Six feasible plans of the roadway position layout were put forward to reduce the effect of the weak interlayer on the attenuation of the bearing capacity of the rock around the roadway and determine the reasonable position of the roadway in the thick-coal seam with weak interlayer. The numerical simulation method was used to analyze the stress field, the displacement field and the plastic zone around the roadway under the condition of the six plans. We found that the weak interlayer was the key body to control the roadway deformation in the thick-coal seam. When the weak interlayer locates in the ribs of the roadway, the deformation of the rock around the roadway decreases significantly.These results provide the theoretical basis for the roadway layout under the similar condition of thick-coal seam with weak interlayer.

关 键 词：软弱夹矸 厚煤层 巷道层位 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]