摘要
我国浅埋深特厚煤层矿区主要位于中西部地区,其中神东矿区是最典型的浅埋深特厚煤层赋存区域。该区域煤层埋深浅且赋存稳定;工作面采高大,矿压显现强烈;上覆岩层一般只有两带,来压时呈"切落体"式垮落。以大柳塔煤矿5-2煤特厚煤层开采为依据,对7 m超大采高工作面进行矿压规律研究。通过数值模拟、数据分析、现场观测等手段,对超大采高工作面的矿压规律进行分析,推断上覆岩层位移、应力状态、来压步距、来压强度,为后续的开采进行预测预报、减少顶板事故的发生,并为类似条件下的综采工作面开采提供参考。
In China,the shallow deep and extra thick coal seams are mainly located in the central and western regions,and Shendong mining area is the most typical occurrence area of shallow deep and extra thick coal seams.In this area,the coal seam is shallow and stable,the mining face is high,the mine pressure is strong,the overburden of the working face is generally only two zones,and the roof is easy to be cut down.Taking the mining of 5-2 extra thick coal seam in Daliuta coal mine as an example,the law of mine pressure in the 7 m super high working face was studied.By means of numerical simulation,data analysis,field observation and other means,the movement law of overburden,pressure step distance and pressure strength of the working face were analyzed,so as to predict the pressure of follow-up mining,reduce the occurrence of roof accidents,and provide reference for the mining of the fully mechanized working face under similar conditions.
作者
王子升
WANG Zi-sheng(Technology Research Institute,Shendong Coal Group Co.,Ltd.,Shenmu 719315,China)
出处
《陕西煤炭》
2020年第S02期11-15,共5页
Shaanxi Coal
关键词
超大采高工作面
数值模拟
矿压规律
预测预报
super large mining height face
numerical simulation
mine pressure law
prediction
作者简介
王子升(1988—),男,河南商丘人,2015年毕业于中国矿业大学(北京)矿业工程专业,硕士,工程师,现从事采矿科研主管工作。
