高应力强膨胀多裂隙软岩巷道锚网喷注支护

High stress high expansion and multiple crack soft rock roadway anchor support

高应力强膨胀多裂隙软岩巷道的支护问题一直是困扰恩洪矿区煤矿企业的难题。本文分析了恩洪煤矿二号井1800m轨道运输大巷围岩变形机理,对巷道变形情况进行了监测,掌握了高应力强膨胀多裂隙软岩巷道的压力特点和围岩变形规律。通过计算确定了高应力强膨胀多裂隙软岩巷道高性能锚网喷注支护参数,并不断根据施工现场情况调整支护参数,取得了较好的支护效果。

The problem of the support of high stress strong expansion and multiple crack soft rock roadway has been a difficult problem for coal mining enterprises. This paper analyzed the En Hong coal mine no.2 1800 m Rail transit lanes surrounding rock deformation mechanism of the roadway, monitored the deformation of the roadway, mastered the high stress strong expansion and multiple crack soft rock characteristics and the deformation law of surrounding rock pressure. The parameters of high performance anchor net injection for high stress strong expansion and multiple crack soft rock tunnel are determined by calculation, and the support parameters are adjusted according to the conditions of the construction site, achieved good supporting effect.