论文部分内容阅读
本文介绍安康水电站坝基千枚岩内断层型缓倾角软弱层带的成因类型及基本特征;缓倾软弱层带特点及分布规律;缓倾软弱层带成因机制;并较详细地论述了软弱层带的起伏差、厚度、组成结构、矿化成分以及水稳定性等工程地质特性,提出了抗剪强度和抗剪指标选择的一般原则.根据缓倾软弱层带的分布规律,分析了不同典型地段坝基的边界条件和可能的滑动型式;核算了典型坝段处理前后的稳定性.本文还着重提出构造型缓倾软弱层带起伏差的分级和多变性的特征,这对研究同类型地基抗滑稳定及探察其分布规律是有一定参考意义的.
This paper introduces the genetic types and basic features of the fault-type weak dip zone within the phyllite in the Ankang hydropower station, the characteristics and distribution of gentle dip and weak zones, and the genetic mechanism of gentle dip and weak zones. The general principles of the selection of shear strength and shear index are proposed based on the engineering geological characteristics such as roughness, undulation, thickness, composition, mineralization composition and water stability.According to the distribution law of gently inclined weak zone, Boundary condition and possible sliding type of the dam are calculated.The stability before and after the treatment of the typical dam section is calculated.The characteristics of grading and variability of the undulating undulation of the structurally gentle ply zone are also emphasized in this paper, And explore the distribution of the law is of some reference value.