论文部分内容阅读
复杂岩石中大坝基础的岩体力学性质受岩性、成岩条件、结构面特征及其空间展布,以及一些衰变因素的影响.本文针对确定龙滩水电工程坝基板纳组砂页岩的岩体力学参数,主要是软弱页岩的岩体力学参数问题;重视断裂研究,在广泛调查统计节理的基础上进行选点试验;建立变形参数和纵波速与岩体完整性分类的对应关系;以及对岩样破坏形态与微观结构关系的研究等,文中还探讨了影响岩石强度衰减的各种因素.
The mechanical properties of rock masses in dam foundations in complex rocks are affected by lithology, diagenetic conditions, structural features, spatial distribution, and some factors of decay. This paper is aimed at determining the rock formations of the Yanna Formation sandstone shale in the Longtan hydropower project dam. The mechanical parameters of the body are mainly the rock mechanical parameters of weak shales; they pay attention to fracture research, and conduct selection tests on the basis of extensive investigation of statistical joints; and establish the correspondence between deformation parameters and longitudinal wave velocity and rock mass integrity classification; For the study of the relationship between rock failure morphology and microstructure, the paper also discusses various factors affecting rock strength attenuation.