超高密度电阻率法在土洞、煤窑采空区和岩溶勘探中应用研究

超高密度电阻率法是Australia ZZ Resistivity Imaging研发中心积近十年的研究成果提出的全新的电阻率法勘探理念,是电法勘探从手工时代向计算机时代的一次跨越式发展,采用一次布极,采集所有可能组合电极间的电位信息,信息量较常规电法在信息量上翻了40倍以上,并且避开视电阻率概念,利用处理软件直接反演获取断面真电阻率值,针对目前还没有行之有效的地面物探方法可以勘探清楚的土洞、煤窑采空区和岩溶等复杂地质问题,我们采用该方法分别对机场岩溶和土洞、煤矿运煤巷道、隐伏小煤矿采空区和复杂地质病害隧道进行了试验勘探,经钻探验证,准确率在60%以上,达到国内领先水平,取得了较好效果,对复杂地质的工程勘探具有一定参考价值.

Applications and research of the high resolution resistivity method in explovation of caves,mined regions and Karst region

The high resolution resistivity method is a ten-year research achievement of Australia's ZZ Resistivity Imaging Research Center in the resistivity exploration method. It created a brand new concept in resistivity data acquisition and data processing and is large improvement to the traditional data acquisition method. This new method can acquire data of all possible electrode combinations from only one layout of a set of electrodes. Such it can collect more than 40 times of the traditional resistivity data acquisition configuration. The new method completely abandons the psudosection & geometry factor concepts, and calculates true resistivity sections from survey data directly with an inversion technique. Currently, there still is no effective geophysical method that can accurately detect caves under rough surface topography. We use the new method to explore caves in Karst of airports, mined laneways, the small mined region of susarface and tunnels with complicated geological conditions. By drlling the new method can reach over 60 percent of accuracy. So we can say that the experiments completed with the new method show that this method can produce very promising results. In a word, the new method has some reference values for engineering explorations under complicated geological conditions.