基于松动圈测试技术的巷道支护方案设计

The roadway supporting scheme design based on test technology of strata released zone

巷道围岩松动圈的大小是评定围岩稳定性和确定锚杆长度的重要依据,对双柳煤矿3306工作面回采巷道进行围岩松动圈测试,得出了该工作面松动圈范围。根据松动圈测试结果、巷道围岩松动圈支护理论及我国缓倾斜、倾斜煤层回采巷道围岩稳定性分类方案,最终确定了合理的巷道支护方式及参数,对类似地质条件下的巷道支护设计具有借鉴意义。

The surrounding rock stability and anchor bolt length is main basis to assess the size of roadway sur -rounding rock loose circle.On 3306 working face of Shuangliu mine, the test of mining gateway surrounding rock loose circle size has been conducted and the size has been obtained.According to the size of roadway sur-rounding rock loose circle, theory of roadway surrounding rock loose circle support and classification scheme of mining gateway surrounding rock stability in inclined or gentle dip coal seam in china , reasonable roadway supporting method and parameters have been ascertained , which will be an example for other similar roadway support design.