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水电工程岩体地震波CT测试研究

发表时间:2011-11-15  浏览量:1299  下载量:631
全部作者: 李玲,周仲华,郑龙
作者单位: 西部灾害与环境力学教育部重点实验室;兰州大学土木工程与力学学院
摘 要: 以地震波CT(computer tomography)成像理论为基础,结合某电站坝肩岩体硐间地震波穿透实测资料,对坝肩岩体进行地震波速层析成像处理,详细揭示坝肩岩体的地质特性、结构和空间分布状态等,对比结合地质资料进行综合分析解释,并取得了一定的效果。分析结果表明:地震波CT技术在水电工程岩体测试中有着常规岩体波速测试无可比拟的优越性,是水电工程岩体弹性波测试的发展趋势。
关 键 词: 勘探地球物理学;地震波CT;成像方法;水电工程;坝肩岩体
Title: Research of rock seismic CT in hydropower engineering
Author: LI Ling, ZHOU Zhonghua, ZHENG Long
Organization: The Key Laboratory of Mechanics on Disaster and Environment in Western China, The Ministry of Education, School of Civil Engineering and Mechanics, Lanzhou University
Abstract: Based on the imaging theory of seismic computer tomography (CT), combined with measured data on cross-adit seismic wave penetration of abutment rock mass in a hydropower station, seismic wave velocity tomography processing was made on abutment rock mass. In order to realize the quick ray trace, the method of ellipse restriction was used. The algorithm of simultaneous iterative reconstruction technique to reconstruct the variation of seismic velocity between the adit was also used. It revealed in detail the geological characteristics, structure and spatial distribution status of abutment rock mass. It analyzed and interpreted in an integrated manner by contrasting geological data and some results were achieved. The results show that the technique of seismic CT comparing with conventional rock velocity test has unparalleled superiority in rock test of hydropower engineering, and this is the development trends of rock elastic wave velocity test in hydropower engineering.
Key words: exploration geophysics; seismic computer tomography; imaging method; hydropower engineering; abutment rock mass
发表期数: 2011年11月第21期
引用格式: 李玲,周仲华,郑龙. 水电工程岩体地震波CT测试研究[J]. 中国科技论文在线精品论文,2011,4(21):1924-1930.
 
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