某水电站解放沟现今河谷地应力场分析

PRESENT STRESS ANALYSIS OF JIEFANG VALLEY IN ONE HYDROPOWER STATION

本文主要是对解放沟现今河谷地应力场进行分析,研究地应力场的分布特征。经分析得出以下结论:模型现今河谷地应力场的分布符合地应力场分布的一般规律和锦屏河谷段特殊的应力分布特征,与锦屏其它模型模拟的结果相一致;模型中的F5、F8断层对地应力分布影响分为第一临界深度、第二临界深度和过渡深度三种情况;河谷区应力存在分带现象,可划分为岸坡至一定深度范围内的应力释放带、应力扰动带、原岩应力区和高地应力区。

The paper testified rationality of the established model to analyze nowadays stress of Jiefang valley model and to study distributing character of the stress. According to analysis, we reach these conclusions： The distributing character of the stress accorded with commonly rule,special stress distributing character in Jingping valley and simulating result of the other model in Jingping Hydropower Station. In the model, the influence ofF5 and F8 faultage had three status that were the first critical depth, the second critical depth and transition depth. At the valley zone, the stress was distinguished releasing zone, disturbing zone, natural zone and high stress zone.