摘要
常用电阻率法的空间效应和视电阻率拟断面记录点对应深度方面的经验性,使其工程应用受到限制.根据电场的基本理论和地震CT勘探的原理,提出了利用在平行钻孔中布设电极、然后利用一孔的电极供电、另一孔的电极同时测量的拟震式单极——单极跨孔直流电阻率法CT勘探技术,并编制了相关的数据处理软件.通过对砼模型在水压致裂过程中电阻率变化的测试,证明了该技术的可行性.
Resistivity methods in common use have many shortcomings, such as steric effect and experienced in the homologous depth of measuring points of apparent resistivity pseudo sections, so their applications come under limitation. According to the fundamental principles of the electric field and the theory of seismic CT prospecting, the prospecting technology of simulating-seismic pole-pole cross-hole direct-current resistivity method CT has been brought forward. It sets many electrodes in two parallel boreholes, and then uses one current electrode that is in one borehole to perform power supply, at the same time, all electrodes in another borehole conduct synchronous prospecting. Thereby the data processing software is programmed. The feasibility of this technology has been validated by prospecting the resistivity varition of a concrete model under hydro-fracturing.
出处
《地球物理学进展》
CSCD
北大核心
2010年第5期1833-1840,共8页
Progress in Geophysics
基金
国家高技术研究发展计划(863计划)重点项目(2008AA062104)
安徽高等学校省级科学研究基金项目(KJ2009B099Z)
安徽建筑工业学院博士基金项目联合资助
关键词
跨孔
电阻率法
CT技术
拟震式
cross-hole, resistivity method, CT technology, simulating-seismic
