危岩体稳定性评价及工程实例分析

An Example Analysis of Stability Evaluation of Unstable Rock Blocks and Engineering

以宜宾市宜宾县喜捷镇边坡危岩体作为研究对象,通过分析危岩体的状况,对危岩体的稳定性进行了赤平投影分析,结果表明:危岩块体底部存在与坡面近反向的缓倾结构面,该危岩块体在暴雨、地震或其它异常地质营力的诱发下,将可能沿着其与母岩的接触面发生滑塌;可采用地锚加钻孔灌浆加固,防石墙、栏石板支撑,以及清除余石的综合治理方案来防止危岩体滑塌.

Taking an unstable rock block in Yibin County in Yibin City as a research object, a stability analysis of unstable rock blocks at Xijie Town was established with a stereographic projection method. The results show that there are gentle - inclined structural surface inverse slopes at the bottom of the rock - block, the unstable rock blocks in a rainstorm, earthquake, or other abnormal geological battalion forces will likely cause a slumping occur along the contact surface with the parent rock. Meanwhile, a comprehensive administration project including the anchor reinforce, the stone guard, the bar and the stone clear of the unstable rock blocks is done to prevent the unstable rock slumping.