西部地下水资源勘查的综合地球物理问题—以鄂尔多斯盆地白垩系地下水勘查为例

Integrated geophysical problems on the survey of the groundwater resources in the western of China——A case study of the cretaceous groundwater in Ardos Basin

西部地下水资源勘查不再是单纯的地理、地质和水文方面的问题。由于地下水的深赋存特点,决定了西部地下水的勘查与油气勘探一样,是深层的地球物理问题。地下水研究所涉及的基础地质问题、地层的含水性问题和水质问题是目前地下水水文地质研究的关键。这三个问题的有效解决,必须依靠勘探地球物理方法技术的有效运用和新方法、新技术的研究开发。本文在阐述地下水水文地质研究现状和面临问题的同时,就目前地球物理勘探技术的发展水平和在西部的发展状况,以鄂尔多斯盆地地下水勘查为例,提出了利用已有物探资料为地下水勘查服务的地球物理解决方案,从理论方法上证明其可行性,并提出了建立示范区研究的必要性,以期对目前正在兴起的西部地下水资源研究提供参考。

The survey of groundwater resources is the key to the study on water resources in the west of China. Since subsurface water resources storages in the depth below 300 meters, the survey of groundwater resources in the west part of China cannot be best fulfilled by separate respective application of geophysical, geological and hydrogeological methods. Three major problems are involved in the survey and development of groundwater resources: basic geological background, aquosity, and the water quality. To deal with these issues, the existing and new geophysical methods and techniques should be applied. Several geophysical solutions for the survey and development of subsurface water resources in the Ardos Basin have been proved that the application of petroleum geophysical tools is reliable. The representative area in Ardos Basin could provide references to other places of the western China for the study and research of groundwater resources.