极端冰雪条件下危岩结构面冰胀力计算方法探讨  

Discussion on ice expansion force calculation method of structural plane of dangerous rock under extreme ice and snow hazard

作　　者：胡清义 刘加龙 韩前龙 

机构地区：[1]长江勘测规划设计研究院枢纽设计处,湖北武汉430010

出　　处：《人民长江》2010年第24期72-75,共4页Yangtze River

基　　金：国家"十一五"科技支撑计划项目(2008BAC47B02)

摘　　要：极端冰雪灾害条件下,冰胀力是影响边坡危岩体稳定的重要因素。首先介绍了基于弹性理论的结构面冰胀力解析算法。引入"等效线膨胀系数"概念,对结构面冰胀力进行了数值模拟分析,并对两种算法的成果进行了比较,发现两种方法计算出的冰胀力十分接近,验证了两种方法的正确性,为极端冰雪灾害条件下边坡危岩体稳定分析提供了理论依据。Ice expansion force is a key factor affecting the stability of dangerous rock mass in slope under the condition of extreme ice and snow hazard.We firstly introduce the analytical method of ice expansion force for structural plane of dangerous rock mass based on elasticity theory.By introducing the concept of ＂equivalent line expansion coefficient＂,we conduct numerical simulation of ice expansion force of structural plane and compare the simulation results of the two methods.We find that the values of ice expansion force calculated by two methods are close,which verified the correctness of the two methods.

关 键 词：极端冰雪灾害 边坡 危岩体 结构面 冰胀力 

分 类 号：TV31[水利工程—水工结构工程]