彬长矿区高位厚硬覆岩特征岩移规律研究
Shaanxi Meitan（2022）
Abstract
以陕西彬长矿区亭南煤矿二盘区巨厚洛河组砂岩条件下6 m大采高多工作面开采为研究.背景,应用数值模拟分析、理论分析、综合分析等手段对二盘区大采高综采工作面上覆厚硬岩层运动规律进行研究.分析认为,亭南煤矿二盘区覆岩中存在典型的高位厚硬岩层,厚硬岩层以"一主四亚"复合关键层破坏的形式控制着整个覆岩的运动;204工作面开采结束,第二亚关键层破断,205工作面开采结束,第四亚关键层破断,206工作面开采结束,覆岩主关键层破断,地表出现剧烈的移动下沉,裂缝带到达主关键层下部,需要做好主关键层破断时的动力灾害防治措施.
MoreTranslated text
Key words
high-level thick and hard rock layer,large mining height,overlying rock movement law,composite key layer
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined