钻探-物探组合方法用于场地污染调查实例分析

EXAMPLE ANALYSIS OF APPLICATION OF DRILLING GEOPHYSICAL PROSPECTING COMBINATION METHOD IN SITE POLLUTION INVESTIGATION

为了探求提高场地污染调查效率和准确度的方法,将物探与一般场地调查手段更好地结合,对以后土壤污染调查形成借鉴作用,以某污水处理厂地块土壤污染状况调查为例,利用钻探资料进行EVS建模,并利用高密度电法、地质雷达等方法对场地污染进行调查。EVS建模为土壤污染状况调查提供了更加方便、具象的解决途径,通过对场地内污染物空间连续分布建模分析,为进一步研究土壤污染情况、做好土壤污染防治工作奠定了基础。高密度电法对于探测地下含水层、渗滤液等有较好的效果,可以完成场地调查前期勘探的部分工作;对于地下管道复杂,无法掌握地下构筑物或掩埋物等信息的地块,可用地质雷达进行前期探测,减少钻探布点的盲目性和突发情况,提高钻探作业的效率和安全性。

In order to explore methods to improve the efficiency and accuracy of site pollution investigation,better combine geophysical exploration with general site investigation methods,and form a reference for future soil pollution investigation,this paper takes the soil pollution status investigation of a sewage treatment plant plot as an example,uses drilling data for EVS modeling,and uses high-density electrical method,geological radar and other methods to investigate site pollution.EVS modeling provides a more convenient and concrete solution for the investigation of soil pollution.Through the modeling and analysis of the spatial continuous distribution of pollutants in the site,it lays a foundation for further study of soil pollution and prevention and control of soil pollution.High density electrical method has a good effect on the detection of underground aquifers,leachate,etc.,and can complete part of the preliminary exploration work of site investigation;For the plots with complex underground pipelines and unable to grasp the information of underground structures or burials,geological radar can be used for early detection,so as to reduce the blindness and emergencies of drilling location and improve the efficiency and safety of drilling operations.