井间地震层析成像技术在岩溶勘察中的应用

介绍了井间地震层析成像技术测试的工作原理及工作方法,然后利用层析成像反演算法对现场获取的原始测试数据进行了解译,得到溶洞沿不同测线的剖面分布图和不同高程处的平面分布图,并将其与场地现有钻孔地质资料进行对比验证,结果表明井间地震层析成像技术有较高的精度和可信度,可得到场地中溶洞的空间分布,从而为工程设计提供可靠的地质资料。

Application of cross-hole seismic computerized tomography technology to karst caves survey

The cross-well seismic computerized tomography technology and its operation method are introduced in this paper. The application of this technology to a factual cavern survey engineering is presented. The data obtained from the site are interpreted combined the data with an inversion method for seismic computerized tomography. Plan and section plans of karst cave distribution are obtained. Comparison is carried out between the result of the cross -section electromagnetic topography technique and the data from the borehole. The results show that the seismic computerized tomography technology have the advantages of higher precision and credibility, and three dimension space distribution of karst cave can be obtained by the inversion analysis. The method can be used to provide detailed geological data for engineering design.