堤坝防渗心墙的孔洞缺陷及其CSAMT响应特征  

THE HOLE LACUNA IN THE DYKE ANTI-SEEPAGE CORE WALL AND THE CSAMT RESPONSE CHARACTERISTICS

作　　者：奚先[1] 沈远彤[2] 韩世勤[2] 李星[2] 李宏伟[2] 刘安平[2] 

机构地区：[1]华中科技大学数学系,武汉430074 [2]中国地质大学数学和物理系,武汉430074

出　　处：《工程地球物理学报》2004年第1期64-69,73,共7页Chinese Journal of Engineering Geophysics

摘　　要：本文通过数值方法 ,进行了堤坝防渗心墙CSAMT响应的理论模拟。我们首先说明了在远场条件下由场源发出的电磁波近似是垂直向下的平面波 ;然后在远场条件下 ,详细研究了当防渗心墙上有各种不同深度、不同大小、不同形状、不同充填 (充填泥土或空气 )的孔洞缺陷时的CSAMT响应特点 。In this paper, via the numerical method, we carried out the theoretical simulation of the CSAMT response of the dyke anti-seepage core wall. We firstly explained that the electromagnetic wave emitted from the source under the condition of far field is approximately the plane wave, which vertically downwards; and then under the condition of far field, we detail in studied the CSAMT response characteristics when there are different types of the hole lacuna in depth, in size, in shape, in silting （mud silting or air silting） on the anti-seepage core wall, from which we drew some conclusions.

关 键 词：堤坝防渗心墙 孔洞缺陷 数值模拟 CSAMT响应特征 

分 类 号：TV543.8[水利工程—水利水电工程]