摘要
本文以煤矿的工程地质模型为研究背景,采用相似材料模拟的试验方法,研究近距离下行工作面过断层开采时煤层顶板垮落规律及其应力变化情况。研究发现:过断层前,断层活化程度小,断层基本保持稳定,过断层后,断层活化程度加剧,顶板出现"随采随断"现象;在推进过程中,越接近断层带,顶板应力集中越明显。
In this paper, based on the engineering geological model of coal mine, using the similar material simulation test method, the law of coal seam roof collapse and the change of stress are studied when the short-distance downward working face passes through the fault mining. It is found that the activation degree of the fault is small before passing through the fault, and the fault is basically stable. After passing through the fault, the activation degree of the fault intensifies, and the roof appears the phenomenon of "breaking along with mining";in the process of advancing, the closer the fault is to the fault zone, the more obvious the roof stress concentration is.
作者
闫奋前
吴俊达
孙亚楠
Yan Fen-qian;Wu Jun-da;Sun Ya-nan(College of Mining and Safety Engineering,Shandong University of Science and Technology,Shandong Qingdao 266590)
出处
《山东煤炭科技》
2019年第11期48-49,52,55,共4页
Shandong Coal Science and Technology
关键词
近距离
采煤
断层
模拟
close range
coal mining
fault
simulation
