西部地下水勘查的基础地质问题与关键地球物理技术

介绍了基础地质问题研究对西部深层地下水文地质研究的重要意义，就西部地下水研究的特殊性，针对性地提出了地球物理的解决方法和思路，在利用已有的地球物理资料研究基础地质问题的过程中，介绍重要的地球物理方法技术及研究工作步骤，针对这些方法技术在应用中面临的问题和技术本身存在的不足，提出了具体解决方案和研发部署，针对已有资料的局限性和西部地下水的特殊性，提出研究高精度地震静校正、全波处理等方法技术。

KEY GEOLOGICAL PROBLEMS AND GEOPHYSICAL TECHNIQUES IN THE EXPLORATION OF THE UNDERGROUND WATER IN THE WESTERN OF CHINA

In this paper, the significance of basic geological structure study for the deep underground water of the Western of China is introduced after another paper printed . We first introduce geophysical designs to solve the geological problem with respect to the specialty of deep sub-surface water in the Western, in which the geophysical data sampled by petroleum Co. long time ago, can be reused to provide the Western structural and sediment information. Then we introduce the geophysical techniques and methods to solve the detailed problems when old geophysical data reused. However, it is not easy when re-processing and re interpreting these geophysical data because of the limitation of old geophysicaldata and the disadvantages of some geophysical techniques at present. For example, the seismic data may not include shallow reflection, which is the target of sub surface hydrological study, or the shallow reflection is flooded by high frequency noise or linear noise, and so on. So that we will be faced many practical and technological problems when processing these old data. Many geophysical methods, such as the seismic data static correction processing, should be studied. The recycling of these data is not simply to copy these petroleum geological reports and figures, and not the simply reprocessing and interpretation of these data once again. The study of high accurate static correction and multi type of wave processing techniques are needed, because they can dig out more information of shallow reflection from the old data.