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本文利用遥感图像解译、地质调研和物探等技术手段,对甘肃疏勒河断裂带中段的地质特征及其稳定性进行了研究。通过研究,对疏勒河断裂带的认识有了新的进展,取得了较好的效果。第一,在人工露头上观察到疏勒河断裂带中段主干断裂的结构面特征,初步确定其力学性质以压性为主;第二,在该区开展甚低频电磁测量,其成果与遥感图像解译、地质调研的结果一致,从而肯定了疏勒河断裂带中段空间分布规律的认识;第三,应用区域地球物理和地球地温资料,对疏勒河断裂带的深部地壳结构和地温背景进行了分析研究,获得了一些深部地质信息。同时,对勒勒河断裂带中段的稳定性进行了评述,并指出该断裂带中段及其以北的北山地区较稳定,是高放废物处置库选址的有利地区。
In this paper, the geological characteristics and the stability of the Shulehe fault zone in Gansu Province are studied by means of remote sensing image interpretation, geological survey and geophysical prospecting. Through the research, the recognition of the Shulehe fault zone has made new progress and achieved good results. First, the structural surface features of the main faults in the middle segment of the Shulehe fault zone are observed on the outcrops of the Shuluhe River, and its mechanical properties are mainly determined to be compressive. Secondly, the very low frequency electromagnetic measurements are carried out in this area. The results are in good agreement with the remote sensing images Interpretation and geological survey, so as to affirm the spatial distribution of the Shulehe fault zone. Thirdly, the deep crustal structure and geothermal background of the Shulehe fault zone are studied by using regional geophysics and geothermal data Analytical research, access to some of the deep geological information. At the same time, the stability of the middle part of the Lele River fault zone is reviewed. It is pointed out that the middle part of the fault zone and the north mountain area are relatively stable, which is a favorable area for the location of the HLW disposal site.