摘要
结合平煤六矿新明斜井成功穿越采空区工程实例,在分析巷道围岩破坏机理及注浆加固机理的基础上,对斜井穿越采空区拟采用注浆加固技术的参数尤其是最佳加固范围进行研究计算.运用FLAC3D数值模拟软件对巷道穿越采空区时不同注浆范围下巷道围岩变形及应力分布进行模拟分析,并最终确定新明斜井穿越采空区冒落带注浆孔深3 m,注浆半径1.5 m,最佳注浆加固范围为4.5 m.对于该类巷道围岩注浆加固工程实践具有一定参考价值.
Taking the Pingdingshan No. 6 Mine New Ming inclined shaft engineering as an example, and on the basis of the analysis of the surrounding rock failure mechanism and grouting reinforcement mechanism, this paper studies the inclined shaft through the goaf grouting reinforcement parameters, especially the best reinforcement range. Through analyzing the different grouting range surrounding rock deformation and stress distribution of roadway across the caving zone by using FLAC3D numerical simulation software, this paper determines that the Ming inclined shaft through the goaf caving with best grouting reinforcement is 4.5 m, in which grouting hole deep is 3 m, and radius of grouting is 1.5 m.
出处
《矿业工程研究》
2014年第1期5-8,共4页
Mineral Engineering Research
基金
湖南科技大学研究生创新基金资助项目(S130003)
关键词
斜井
冒落带
注浆
数值模拟
inclined shaft
caving zone
grouting
numerical simulation
