松散破碎软岩巷道底鼓控制的试验研究

强烈底鼓是破碎软岩巷道支护的一个重大难题.以牛马司实业有限公司水井头矿-300东大巷底鼓控制的工程试验为例,在测试围岩矿物成分和力学参数的基础上,分析了破碎软岩巷道底鼓的机理,提出了锚网喷注的联合支护方案,并应用数值分析软件对比分析了巷道底鼓的控制效果.工程试验表明,该技术较好的控制了巷道的强烈底鼓,为同类软岩巷道底鼓控制提供了参考.图5,参8.

Experimental Study on the Technology of Floor Heave Control in Incompact and Fractured Soft-Rock Roadway

Severe floor heave is one of the most important problems in incompact and fractured soft-rock roadway. Taking the project experiment for example,which floor heave control of easterly -300 m level in Shuijingtou Coal Mine of Mining Corporation Ltd. the mechanisms of floor heave of incompact and fractured soft-rock roadway was analyed,that based on testing the mineral components and mechanical parameters of the surrounding rock. The support scheme of combined using shorcrete-bolt, steel wire net, steel strip and grouting was put forward. And the control effects of new supporting scheme and the original one to floor heave were compared using numerical analytical software. The result shows that the severe floor heave be controlled successfully, which provides an engineering reference for floor heave of the same sort roadway.5figs,.8refs.