一种高边坡岩体卸荷分带方法的探讨  

DISCUSSION ON A METHOD FOR DISCRIMINATING UNLOADED ZONE OF HIGH ROCK SLOPE

作　　者：王毅[1] 聂德新[1] 任光明[1] 

机构地区：[1]成都理工大学环境与土木工程学院,成都610059

出　　处：《工程地质学报》2004年第1期83-86,共4页Journal of Engineering Geology

基　　金：国家自然科学基金 (编号 40 0 72 0 90 )

摘　　要：岩体卸荷是水利水电工程建设中常见的工程地质问题之一。本文介绍了高边坡岩体卸荷的背景条件、作用机理、卸荷岩体特征以及常见的卸荷带划分方法。针对河谷斜坡岩体从表部到深部 ,岩体裂隙发育程度、张开程度逐渐降低的特征 ,以黄河上游某水电站高边坡印支期花岗岩体的现场调查资料为依托 ,应用岩体裂隙发育程度、张开程度量化指标对斜坡岩体卸荷进行分带 ,较好地将岩体卸荷分带与岩体结构、岩体工程特性紧密结合起来 。The rock mass unloading is one of engineering-geological problems in construction of hydroelectric projects. This paper introduces the background and formation mechanism for the rock mass unloading, the common characteristics of unloded rockmass and several methods for discriminating the unloaded zone. Considering the numbers and opening degree of joints in rock mass gradually reducing from the surface to depth, basing on field investigation data of Indo sinian granite on a high slope of hydroelectric station on the upstream of Yellow River, the rock mass unloading zone is discriminated in accordance with amounts and opening degree of joints in combination with rock mass structure and its engineering properties. This result provides a reference for other slope engineering.

关 键 词：岩体卸荷 裂隙 边坡 卸荷分带 水利水电工程 

分 类 号：U213.13[交通运输工程—道路与铁道工程]