An Application Of Geophysical Survey Technology To Site Evaluation For Candidate High-level Radioactive Waste Disposal Areas

Is well known,if the high-level radioactive waste disposed incorrectly, it will do great harm to the ecological environment, it must be on the basis of full scientific research, selected effective ways to strict disposal to prevent leakage. Currently, recognized the feasibility of high processing is a land of deep geological disposal, this high level radioactive waste buried underground engineering generally known as high-level radioactive waste repository. About the high-level radioactive waste repository, many of the world’s nuclear-related developed countries are ongoing research and have achieved varying degrees of achievement, in China, in recent years has made significant progress in terms of site selection and site characteristics evaluation, but far from the goal of derermine the final site, need to refer to the excellent foreign experience and technology, with the forces of domestic,then through solid work to successfully complete the tasks stipulated by the state.The work in the high-level radioactive waste repository leading research units-Nuclear Industry Beijing Research Institute of Uranium Geology unified command and coordination to complete. We use state-of-the-art instruments at home and abroad to carry out geophysical research work, provide the actual scientific basis for high-level radioactive waste repository site characterization of a candidate field evaluation and follow-up exploration work. We used the magnetotelluric method, the controlled source audio magnetotelluric method as well as high-precision magnetic method to carry out a comprehensive geophysical survey and data interpretation, basically clear the granite rock morphological characteristics of the candidate field, distribution, rock contact surface and extends to deep condition; generally identify the target rock mass with the surrounding rock mass relationship; initially identify within the rock mass adverse developmental status of the geological body; focused on understanding the control rock mass distribution of the major fracture occurrence, extended deep, broken width, and moisture contentsexual and other features; in short, the geophysical results show that the granite rock of the candidate field was the clumps spread, there are about three homologous magma intrusion unit, the north and south end of each developed a nearly east-west regional deep fault, the fault has little impact on the rock mass,the rock overall performance complete.This paper focuses on high-level radioactive waste repository siting and its use to geophysical technology for discussions, and as far as possible, to make the evaluation on site characterization. The thesis content and description process are summarized as follows:first introduces the research background and the latest developments at home and abroad, and provides an overview of research tasks and technology roadmap; then expounded the case of high-level radioactive waste repository and the geological background of the study area and geophysical characteristics; then analysis of geophysical methods and instruments used in the work,combined with the characteristics of the various methods, targeted to carry out the field survey work; finally, carry out data processing and inference interpretation, to draw the candidate field rock geological and geophysical characteristics.