摘要
为掌握松软煤层大采高工作面巷道矿压显现规律,进行了巷道表面围岩变形和顶板离层监测,结果表明:巷道表面围岩变形分为3个阶段,即超前支护范围外缓慢变形,超前支护范围内快速变形和剧烈变形;超前支护范围外顶板离层量较小,超前支护范围内离层量增加较快;锚固区内离层量在安全范围内,但锚固区外离层量较大,应当调整支护系统。
In order to grasp the law of roadway strata behavior in fully mechanized mining face with great mining height in soft coal seam, the survey on surrounding rock deformation and roof separation of roadway is conducted. The results indicate： the deformation of roadway sur- rounding rock can be divided into three phases, which are slow deformation outside the scope of the advanced support, fast deformation and severe deformation inside the advanced support scope; the roof separation is low out of the scope of the advanced support but it is high inside the advanced support scope; the separation in anchored zone is safe, while it is dangerous out of the anchored zone, and now the support system needs adjusting.
出处
《中国煤炭》
北大核心
2012年第6期61-63,共3页
China Coal
关键词
松软煤层
大采高
巷道矿压
变形规律
soft coal seam, great mining height, roadway rock pressure, deformation law
