长江科学院院报2017，Vol.34Issue(4)：66-70,5.DOI:10.11988/ckyyb.20160099
楞古水电站坝基花岗伟晶岩脉力学参数研究
Mechanical Parameters of Granite Pegmatite Dike in Dam Foundation of Lenggu Hydropower Station
魏星灿 1杨静熙 1肖华波 1王刚1
作者信息
- 1. 中国电建集团 成都勘测设计研究院有限公司,成都 610072
- 折叠
摘要
Abstract
Mechanical parameters of rock and soil at dam foundation are important for the design and stability calculation of dam structure.A large number of granite pegmatite dikes occurs at the dam foundation of Lenggu hydropower station.In view of this,the characteristics of deformation and strength of the dikes were studied by circular rigid bearing plate test and straight shear test.Test results show that stress-deformation curves obtained from bearing plate test are in two shapes,namely straight linear type(or quasi straight linear type)and concave type.The curves of (T)-u obtained from direct shear test can be classified into three types: brittleness,plasticity and composite type.According to the physical meaning of envelope modulus and secant modulus and the hydraulic project's characteristics,as well as the representativeness of least square method and optimal slope method in analyzing strength test data,the principle of determining the standard value of rock mass is presented.Finally,mechanical parameters of pegmatite dike at the dam foundation are proposed.关键词
伟晶岩脉/岩体力学参数/岩体变形/岩体强度/楞古水电站Key words
pegmatite dike/mechanical parameters of rock mass/rock deformation/rock mass strength/Lenggu hydropower station分类
建筑与水利引用本文复制引用
魏星灿,杨静熙,肖华波,王刚..楞古水电站坝基花岗伟晶岩脉力学参数研究[J].长江科学院院报,2017,34(4):66-70,5.
