综合地球物理方法在矿山地质环境治理采空区勘查中的研究应用

Research and Application of Comprehensive Geophysical Method in Exploration of Mined-out Areas for Mine Geological Environment Control

研究矿区采金历史悠久,区内采掘情况较为复杂,为此提出并应用了高密度电阻率法与浅层地震反射波法结合查明采空区的方法。首先采用高密度电阻率法根据电性特征圈定出采空区异常分布范围,在此基础上,在重点异常区附近进行浅层地震反射波法工作,根据波速特征分析其采空及构造的含、导水性,提高了物探方法圈定采空区的精确性。研究矿区位于城市新规划核心部位,在确保不扰民的前提下,通过上述综合方法的系统应用,不仅实现了对金矿采空区的精细勘查和重点探测,同时还有效降低了后期钻探验证的工作量。

The study of gold mining in mining area has a long history,and the mining situation in this area is complex.Therefore,a method combining high density resistivity method with shallow seismic reflection wave method is proposed and applied to identify goaf.Firstly,the abnormal distribution range of mined-out area is delineated by high-density resistivity method according to electrical characteristics.On this basis,shallow seismic reflection wave method is carried out near the key abnormal area.The water content and conductivity of mined-out area and structure are analyzed according to the characteristics of wave velocity,which improves the accuracy of geophysical prospecting method in delineating mined-out area.The research area is located at the core of the new urban planning.On the premise of not disturbing the people,through the systematic application of the above comprehensive methods,not only the fine exploration and key exploration of the goaf of gold mine are realized,but also the workload of drilling verification in the later stage is effectively reduced.