高频电磁法在探测预选区岩体构造中的应用研究

Application of High Frequency Electromagnetic Method in Detecting Structure of Pluton in the Preselected Site

地质处置库是处理高放废物的有效途径,而预选区内的岩体构造则是影响地质处置库稳定性的关键因素之一。为了探明预选区内花岗岩岩体的断裂构造、空间形态,以甘肃北山新场-向阳山预选区岩体为例,简述了EH4系统的工作原理、野外数据采集以及数据处理与解释的全过程。结果表明,应用该方法查明了研究区内断裂的发育情况、岩体的空间形态以及岩体中的不良地质体的分布,为高放废物地质处置库场地的稳定性和完整性评价提供了参考。

Geological disposal repository is an effectively approach to dispose the high-level radioactive waste, the key factors to influence the stability of geological disposal repository is the structure in pluton of preselected site. In order to detect the deep fracture developing situation and spatial distribution of the pluton in the preselected site, we made a case study in Xinehang-Xiangyangshan area of Gansu. EH4 system was used to do the survey. Through contrast the survey data with the actual geological data, it was found that this method can detect the fracture developing situation and spatial distribution of the plu- ton and unfavorable mass in it. The method can provide references for the assessment of stability and in- tegrity of high-level radioactive waste repository site.