水库泄洪洞岩体力学参数研究

通过室内岩石力学性质试验，现场原位岩体抗剪、变形试验和波速测试等研究，分析了水库泄洪洞洞室岩体的力学特性和变形特性．结合洞区岩体结构、构造特征及其风化程度，提出洞室区岩体力学性质基本参数，为洞室稳定性分析和工程设计施工提供了可靠依据．经施工开挖验证，所采用的工程岩体参数客观合理．

Study on rockmass mechanical parameters for reservoir spillway tunnel

Based on laboratory experiments on rockmass mechanical properties and in-situ experimental results of shearing strength and deformation of rockmass and velocity of wave propagation in it, the mechanical properties and deformation characteristics of rockmass in the spillway tunnel were analyzed. In combination with a comprehensive analysis on the structural characteristics and the degree of weathering of rockmass in the spillway tunnel, the fundamental mechanical parameters for rockmass of the spillway tunnel were put forward. The research result provides a basis for stability analysis and reasonable design and construction of spillway tunnels. The excavation and construction of the spillway tunnel in a practical project verifies that the mechanical parameters of rockmass adopted are reasonable and reliable.