综合物探方法在滇池补水工程中的应用

Application of integrated geophysical methods on DianChi water supplement project

本文介绍了包括地震、瞬变电磁法、高密度电法、高频大地电磁法等在内的多种物探方法在滇池补水工程岩土工程勘察中的应用情况.通过选择其中一种或几种物探方法分别应用在河床冲积层、断层带和岩溶探测上,使得物探方法在对物探异常的分辨上能够相互印证,提高了解释成果的可靠性,在探测深度上采用适合浅部勘探的物探方法和适合深部勘探的物探方法相结合,最终得到完整的物探剖面,使解释更加完整,解决了恩格闸址河床冲积层探测、小江断裂带探测、大公山隧洞线路岩溶探测问题,并取得了较好的效果.在本文的最后,根据应用经验对综合物探方法进行了总结,探讨了综合物探方法与单一物探方法相比具有的优点,并对采用综合物探方法的条件和注意的问题进行了总结.

This article introduces some situations about geotechnical engineering investigation on DianChi water a variety of geophysical methods. They are applied to supplement project. These geophysical methods include seismic, transient electromagnetic method, high-density resistivity method and magnetotelluric method etc. Through applying one kind or several physical methods separately in the river bed alluvium, the fault zone and the karst detecting, it enabled the physical methods to be able to verify mutually to the physical prospecting unusual resolution. This enhances reliability of explanation. By combining the methods for deep exploration and shallow exploration, a complete geophysical profile can been eventually formed, The interpretation becomes more complete. The application of these integrated methods solved the Enge lock site alluvial river exploration, the Xiaojiang fault detection, the DaGong mountain tunnel line karst detection problem, and have achieved good results. Finally the experience based on the application of integrated geophysical methods are outlined, the advantages of using integrated geophysical methods are compared with single geophysical methods, and conditions for use of integrated geophysical methods and attention problems are summarized.