摘要
由于裂隙可以诱发各向异性,故提出了采用直流电阻率法探测研究断裂带电各向异性特征,进而研究断裂带发育特征的思路。通过采用物理模拟和数值模拟的方式,得出断裂带电各向异性地层在不同倾角、走向、有无各向同性背景层情况下的视电阻率响应特征:水平各向异性地层,在地表测量结果中无各向异性特征反映;倾斜各向异性地层,视电阻率极大值对应于地层的倾向,极小值对应于走向,极形图长短轴方位与其比值,与地层的走向、倾角及各向异性系数有关。
As cracks can induce anisotropy,thus, DC resistivity method was proposed to study the electric anisotropy of fractured zone, and to study the developing characteristics of fractured zone. Through the application of physical modeling and numerical simulation method,response characteristics apparent resistivity were concluded when the electrical anisotropy formation moves from different an- gles,in different directions, and with or without isotropic layer ： horizontally anisotropic formation, measurements on the surface is no ani- sotropy reflect;tilted anisotropic formations, apparent resistivity maxima correspond to the tendency of formation,the minimum value cor- responds to strike, pole-shaped figure with its major and minor axis orientation and ratio,with the formation of the strike, dip and anisot- ropy coefficient.
出处
《中州煤炭》
2015年第5期117-121,共5页
Zhongzhou Coal
基金
全国大学生科研立项基金(201310290027)
关键词
电各向异性
断裂带
直流电阻率法
采空区突水
electric anisotropy
fractured zone
DC resistivity method
goaf water inrush
