桂林典型危岩体稳定性及危险性评价2讲解VIP免费

桂林喀斯特危岩体发育特征及稳定性分析刘宝臣1 ，郑金1 （1.桂林理工大学土建学院，桂林541004）摘要： 危岩体是由多组的结构面组合而形成，在地表风化作用、卸荷作用、重力、地震、降雨等诱发因素作用下处于不稳定、 欠稳定或极限平衡状态的岩体。笔者对桂林市15 座山的 326 块危岩体发育情况进行实地调查，测绘等手段得到几组重要数据，根据危岩体的结构特征和状态特征，将桂林市的危岩体类型分为悬挂式式、倾倒式、贴坡式、孤立式三种基本类型，本文以屏风山1 号危岩体为对象进行研究，并采用极限平衡法对该危岩体稳定性进行定量验算，综合分析评价桂林市危岩体的发育特征及稳定性。关键词：危岩；极限平衡状态；稳定性；定量验算Stability analysis and risk assessment for three typical rocks in the Guilin city liuBao-chen1 Zheng-jin1（1.Guilin University of Technology，Guilin 541004 ）Abstract ：Dangerous rock is combined to form groups of the structure surface ，In the Unstable, less stable or equilibrium state of the rock and the factors of Surface weathering, unloading, gravity, earthquake, rainfall and so on. Through the investigation and mapping on the 326 dangerous rocks of fifteen mountains of the Guilin city，the writer get some important data , According to the structure and State features of dangerous rocks ， Guilin dangerous rocks are divided into Hanging-type , dumping-type 、posted slope -type and Isolated style . using the three typical rocks as the research object and checking the stability of the dangerous rocks by Limit equilibrium method, analyze the stability of the dangerous rocks. Key word ：dangerous rock； Limit equilibrium ；Stability ；Quantitative Checking0 前言危岩崩塌灾害是我国三大地质灾害之一，已成为我国山地开发和建设的重要制约因素。由于危岩崩塌灾害分布零散, 通常规模有限, 爆发随机性强 ,难以有一个准确的灾害统计数据, 但是其危害程度并不亚于泥石流、滑坡等灾害。 我区石灰岩出露面积广大，这些地区岩溶山峰和地下洞穴非常发育，形成了独特的喀...