水电工程环境边坡危岩体危害程度确定方法研究  

Classification of Hazard Level for Potentially Hazardous Rock Mass in Surrounding Slope of Hydroelectric Projects

作　　者：胡金山[1] 闵勇章[1] 刘永波[1] 曹建平[1] 马德林[1] 

机构地区：[1]中国电建集团成都勘测设计研究院有限公司地质处,成都610072

出　　处：《长江科学院院报》2016年第1期72-76,82,共6页Journal of Changjiang River Scientific Research Institute

摘　　要：危岩体危害程度是指度量致灾体的活动程度、活动特征、地理分布及其对受灾体的影响程度。它不仅与危岩体稳定性有关,还与其危害对象、离危害对象高度、危岩体规模有关,其它情况相同下,规模越大、高度越高其危害越大,即危害程度级别越高。通过对已建及在建水电工程环境边坡危岩体系统研究,建立一套危岩体稳定性评价、危害程度分级体系,根据危害程度分级提出危岩体防治措施一般选取原则。首先根据水电工程环境边坡危岩体所影响水工建筑物级别、部位、人员密集活动程度对危害对象进行分级,然后根据危岩体自身的稳定性、规模及其离危害对象的高度建立危岩体危害程度分级方法,提出危岩体防治措施一般选取原则。将该方法应用于成都勘测设计研究院承建的大多数水电工程环境边坡危岩体评价及处理,取得了较好的效果。Hazard level of potentially hazardous rock mass（ PHRM） is referred to as activity,characteristics,geographic distribution and their effect on objects suffered hazards. It is relevant not only to the stability of PHRM,but also to object,height above object and size of PHRM. Under given other factors,with the increase of size and height,the hazard level increases. Through studying surrounding slope of hydroelectric projects finished or proposed,we establish a classification system for evaluating the stability and risk level of PHRM. On the basis of the system,we present the suitable prevention measures： firstly,risk level of object influenced by PHRM is classified according to level and position of hydraulic structures in association with density of surrounding people; then,we classify hazard levels of PHRM in view of the stability and size of PHRM and height above object. This method is applied to evaluation and treatment of PHRM in the surrounding slope of most hydroelectric projects of our corporation,and results show that it is effective.

关 键 词：环境边坡 危岩体 危害对象 危害程度 防治措施 

分 类 号：TV223[水利工程—水工结构工程]