切顶对巷道围岩变形影响的数值模拟分析  

Numerical Simulation Analysis of Influence of Roff-cutting on Surrounding Rock Deformation of Roadway

作　　者：高永格[1] 张开 靳志新 

机构地区：[1]河北工程大学资源学院,河北邯郸056038

出　　处：《煤炭技术》2017年第12期3-6,共4页Coal Technology

摘　　要：依据云驾岭煤矿12305工作面的实际地质条件以及工作面的生产技术条件,进行了数值模拟分析。分析结果显示,随着充填体采空区一侧切顶高度的增加,顶板下沉量呈逐渐减小的趋势,与此同时下帮煤壁峰值应力不断向上以远偏移。说明通过增加切顶高度,可以有效地进行卸压,且有利于提高留巷的成功率和巷道维护。Based on the actual geological conditions of the 12305 working face in Yunjialing coal mine and the technical conditions of the working face, carries on the numerical simulation analysis. The resuhs show that with the increase of the height of the side of the goal of the filling body, the amount of the roof sinking is decreasing gradually, and the peak stress of the coal wall is gradually shifted upward. It is helpful to improve the success rate of roadway stay and roadway maintenance.

关 键 词：切顶高度 顶板下沉量 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]