炮掘煤巷拱形大断面锚网支护的应用

Application of Bolt-mesh Support with Arched Section in Blasting Driving Roadway

利用围岩松动圈冒落原理,并借鉴开拓岩巷断面形状和支护技术,煤巷采用圆弧拱形断面、锚网索支护,克服了炮掘煤巷受地质条件影响较大,施工后短时间内发生变形,且形变严重,变形后二次支护困难,成本高、投入大等问题,取得非常满意的效果。

Using the principle of breakage of broken rock zone and drawing on the support technology by exploiting sectional shape of rock roadway,the author presents the technology of bolt-mesh-anchor support with circular arched section,which has overcome the problems of deformation influenced by geological condition after blasting,difficult secondary support,high cost and vast investment.