在小煤窑采空区勘探中超高密度电法的应用实例

Ultra-high Density Resistivity Method Applied in Exploration of Small Coal Mine Goaf

六(盘水)威(宁)线六盘水车站小煤窑采空区分布广泛,亟待查明和进行线路方案比选。本文对超高密度电法的资料采集和资料解释进行了研究和总结,归纳出低阻异常与采空区的对应关系。根据超高密度电法资料,把低阻异常划分为"(1)"、"(2)"和"(3)"类物探异常区,其中"(1)"类物探异常区对应"采空区、煤层或全风化、极破碎和极软弱岩体"。在六盘水车站,以物探为主、钻探为辅的综合勘探方法,宏观查明了小煤窑采空区的埋深和平面分布位置,为线路方案的比选和采空区的病害整治提供了详实的基础资料。

It is urgently to find out and make the route selection for the small coal mine goafs which are widely distributed in Liupanshui Station of Liu Panshui to Weining. In this paper,we research and summarize the data acquisition and interpretation of ultra-high density resistivity method,then sum up the corresponding relationship between the low resistivity and goaf. Based on the data of ultra-high density resistivity method,the low resistivity anomalies are divided into '( 1) ','( 2) 'and '( 3) 'geophysical prospecting anomaly zones,and the '( 1) 'anomaly zone corresponds to'goaf,coal bed or complete weathering,extremely fractured and weak rock'. We identify the depth and plane location of the goaf at Liupanshui Station by comprehensive exploration method with an emphasis on geophysical prospecting together with drilling,which can provide a basis of detailed information for goaf disease treatment and route selection.