实例分析差异风化型危岩的稳定性

ANALYSIS OF THE STABILITY OF DIFFERENTIALLY WEATHERED DANGEROUS ROCK WITH A CASE STUDY

为揭示差异风化危岩的位移特征和崩塌影响因素,文中以重庆市开县麻柳乡危岩边坡工程为实例,采用数值分析软件,对不同岩腔风化深度和岩体主裂隙深度工况下危岩体的稳定性进行了有限元分析。研究结果表明,岩腔风化深度为危岩体崩塌的主要影响因素,且动力作用会加速危岩体的崩塌,岩腔风化深度对危岩的崩塌预警具有重要参考意义。

Taking a dangerous rock slope project in Chongqing as the case,the weathering depth of the rock cavity and the depth of the main fissure of the rock mass are analyzed by the finite difference method in FLAC3D software,in which the displacement under dynamic load is analyzed by DDA software.Through the results of static and dynamic analysis,it is concluded that the weathering depth of rock is the main influencing factor,which predicts the collapse of the dangerous rock,providing guidance for the prevention measures.