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.
出处
《工程地质学报》
CSCD
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 )
