卸压组合支护技术在夏甸金矿的应用

Application of combined pressure relief support technology in Xiadian Gold Mine

基于夏甸金矿回采巷道破碎地质条件,分析了回采巷道的破坏特征,结合卸压支护作用机理分析,提出了卸压与玻璃钢锚杆加固组合支护方案,确定了回采巷道两帮钻孔及顶板开槽的卸压方式和玻璃钢锚杆支护的参数。工业应用表明,卸压组合支护方式取得了非常好的支护效果,该支护技术可供相似地质条件下松软破碎回采巷道的支护参考借鉴。

Based on the fragile geologic conditions in the extraction roadway of Xiadian Gold Mine,the paper analyzes the features of roadway damage,and with the help pressure relief support mechanism analysis,comes up with the support scheme combining pressure relief and FRP bolt reinforcement,and decides the pressure relief manner for drilling of both side walls of the extraction roadway as well as roof grooving,and the parameters for FRP bolt support. Industrial test shows that the combined pressure relief technology has achieved satisfactory support performance. The support manner can be used as reference by roadways with similar soft and fragile geologic conditions.