摘要
探讨了如何利用地质雷达及浅层地震有关原理判释泥质粉砂岩中隐伏断裂带的性质和特征。主要的工作方法是通过现场实测 ,分析地质雷达反映在张性断裂带和压性断裂带上的曲线特征 ,分析浅层地震相遇时距曲线在断裂带上的曲线特征。后者的主要特征有 :( 1)在断裂带上初至时间延长 ;( 2 )在断裂带上左右支时距曲线上下跳动的幅度均等 ;( 3 )在断裂带上下跳动的长度不一 ;( 4)在断裂带左右支时距曲线上下跳动或反相 ;( 5 )时距曲线呈喇叭口。
It is very important how to use the relevant principle of the geological radar and shallow seismicity to interpret correctly the characteristics of blind fracture zone in the argillaceous siltstone. According to the measured data, the geological radar curve of tension fracture is different from that of compression fracture. The shallow seismicity reverse control hodograph on the fracture zone has some significant characteristics. 1) the first arrival time was delayed. 2) the jump amplitude of the left and right hodograph is equal. 3) the length of that is different. 4) the phase of that is antagonistic. 5) the curve shape is like a bell mouth. In this paper, the effect of geological rada and shallow seismicity on the fracture exploration survey of argillaceous siltstone, is stated in detail.
出处
《地质灾害与环境保护》
2002年第3期36-39,共4页
Journal of Geological Hazards and Environment Preservation
关键词
泥质粉砂岩
地质雷达
浅层地震
断裂带
地震勘探
geologic Radar
shallow seismicity
the fracture zone
the curve character
