摘要
通过对某矿2号煤首采工作面顶底板岩石力学性质的测试,采用工程类比法确定工作面顺槽围岩稳定性属Ⅲ类中等稳定类型,并确定了工作面顺槽的基本支护方式。采用数值模拟方法,系统的分析了高地应力条件下回采工作面前方顺槽的顶底板、两帮移近量;顺槽锚杆、锚索和锚固范围内的岩层离层情况以及工作面前方顺槽围岩的屈服破坏情况。
Through mechanical properties test on roof and floor rocks in the No.2 first mining face of some mine, engineering analogism was used to determine the stability of surrounding rock of working face crossheading to be medium, type 3 and to specify the basic supporting methods. By numerical simulation, systematic analysis was carried on the roof-floor and two-side displacement of front crossheading of caving face under the condition of high geostress, rock separation within the limits of its bolt, cable and anchorage, and yield damage among its surrounding rocks.
出处
《山西煤炭》
2011年第8期50-51,79,共3页
Shanxi Coal
关键词
工程类比
顺槽
支护方式
数值模拟
超前支护
engineering analogism
crossheading
supporting
numerical simulation
pre-support
