摘要
利用勘探平硐的硐壁波速和硐间整体穿透波速的测试成果,分析了小观音坝址区岩体弹性波速度的空间分布特征,鉴于该坝址区以自重应力为主的地应力场特征,讨论了岩体弹性波速度与地应力场的关系。在建立岩体弹性波速度与岩体力学参数间关系的基础上,并以岩体波速为桥梁,探讨了岩体力学参数与地应力之间的关系。利用建立的各种关系,对坝址区难以开展现场试验但又需要岩体力学参数的某些地段,可以通过弹性波测试甚至根据空间位置,确定或估算其岩体力学参数,以供坝址区岩体质量评价、岩体力学分析和计算使用。
On the basis of elastic wave velocities recorded on the walls of adits and between adits by penetration method,the spatial distribution characteristics of wave velocities of rockmass in Xiaoguanyin dam site on the Yellow River are analyzed. It is shown that elastic wave of this area is related to in-situ stress field whose main component is gravity. The relationship between wave velocity and mechanical parameters of rock mass is established. By the means of elastic wave velocities,the relationship between mechanical parameters and earth stress field is established. By means of these results,it is feasible and easy to obtain or estimate reasonable mechanical parameters that are necessary for evaluation,calculation and analysis in those places where field test is not easy to be carried out.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第z2期2819-2823,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
岩石力学
弹性波
地应力
岩体
力学参数
rock mechanics,elastic wave,in-situ stress,rock mass,mechanical parameter
作者简介
刘高:男,33岁,博士,现任副教授,主要从事地质工程、岩土工程和岩体力学等领域的教学和科研工作.E-mail:liugaocf@lzu.edu.cn.
