破碎复合顶板大跨度切眼联合支护技术

Application of Combined Support Technology in Large Span Open-cut Under Cracked Combined Roof

在破碎复合顶板大跨度切眼支护中,由于巷道地质条件复杂,矿压显现严重,随着地压和巷道断面的增大,存在着一般锚网索支护困难的问题。根据复合顶板巷道的地质特点及矿压显现特征,在大断面破碎复合顶板条件下采用联合支护技术。此种支护结合主动支护和被动支护的优点,减少顶板离层,实现了对大断面切眼围岩的有效控制,防止切眼强烈变形、断裂,保持了原切眼的稳定性,达到了良好的支护效果,取得了显著的技术经济效益。

This paper introduced application of combined support technology in largespanopen - cut？ under cracked combined roof , As roadway complicated geological conditions, mine pressure appear serious, with the pressure and the increasing cross - section of roadway, there is general support cable network anchor difficult issues. According to the roof of the geological characteristics and roadway Ground pressure characteristics, in large section of roof broken under high - intensity prestressed anchor combined support. This such a combination of passive and active support supporting the merits of reducing the roof separation, achieved a large section of rock cut in the effective control to prevent the cut in strong deformation and rupture, and maintained the stability of the original cut in , To support a good effect, have made significant economic benefits of the technology.