基于地应力测量的保护煤柱留设技术

Technology for leaving coal pillars based on ground stress measurement

结合兰花科创玉溪煤矿3#煤层地质构造复杂、地应力不易确定的特点,介绍了目前常用的地应力测量方法,并采用应力解除法对3#煤层地应力进行了实测,根据地应力测量结果,对3#煤层的回采巷道护巷煤柱、开拓巷道护巷煤(岩)柱、停采线煤柱进行了留设,保证了玉溪煤矿3#煤层的开采安全。

Combining the characteristics of the complex geological structure of the No.3 coal seam in Lanxi Kechuang Yuxi Coal Mine and the indeterminate in-situ stress,the commonly used in-situ stress measurement methods are introduced,and the stress relief method is used to measure the in-situ stress of the 3#coal seam.As a result,the coal pillars in the mining roadway of the 3#coal seam,the coal(rock)pillars of the roadway protection roadway,and the coal pillars of the stop line have been reserved,which ensures the mining safety of the 3#coal seam in Yuxi Coal Mine.