综合物探在平山湖地区煤炭勘查中的应用

为在甘肃省河西地区寻找煤炭资源,采取了电法和地震相结合的综合物探方法,将收集到的有关地质、测井等资料作为物探定量解释的约束条件进行综合地质推断,认为该区构造走向为北西西向,北部基底抬起并大部缺失中侏罗统,南部为一凹陷构造,中下侏罗统较完整,含煤性较好。依据物探推断结果,在该区施工了验证孔,验证情况与物探解释吻合较好,为后期在该区找煤提供了较好的依据。

The application of integrated methods to the coal exploration in Pingshanhu area

The exploration area is located on the southern margin of the piedmont pluvial slope of the North Mountain on the gobi desert and is covered largely by Quaternary sediments. Its geomorphology is characterized by broad and flat gobi desert. In order to find the coal resources in this area, firstly, the authors adopted the combination of electrical method and seismic comprehensive geophysical prospecting method, and collected relevant geological and geophysical logging data as the constraint conditions for comprehensive geo?logical inferences to conduct quantitative interpretation of geophysical prospecting. Integrated geophysical inference shows that the geo?logical structure is striking NWW, the basement in the northern part has been lifted and the middle Jurassic strata are missing, the southern part is a concave structure, the middle lower Jurassic strata in this area are complete and the coal potential is promising. Ac?cording to the geophysical inference, drill holes for verification were deployed in this area, and the result shows that the verification drilling matches well with geophysical prospecting, thus providing a better basis for coal exploration in this area in the future.