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中国散裂中子源(CSNS)项目可行性工程地质勘察阶段,在场地部分区域发现了大范围低阻带异常现象,通过分析场址工程地质条件,认为主要与花岗岩和变质岩的接触带有关,推测低阻是由侵入接触带破碎、富水导致。随后工程地质初步勘察阶段完成的钻探、超声波测井资料表明:接触带并没有富水迹象,而高密度电法低阻异常主要是由花岗岩侵入接触带岩体中富含的黄铁矿(FeS2)所致。
The Chinese Spallation Neutron Source (CSNS) Project Feasibility Engineering Geological Prospecting Stage, a wide range of low-resistivity anomalies were found in some areas of the site. By analyzing the site engineering geological conditions, it is believed that the contact area between the granite and the metamorphic rocks is mainly related , Speculated that the low resistance is broken by the invasion contact zone, resulting in water-rich. Subsequent drilling and ultrasonic logging data from the initial exploration stage of the engineering geology indicate that there is no sign of water richness in the contact zone, whereas the low-resistivity anomaly of the high-density electrical method is mainly caused by intrusion of the granite into the pyrite (FeS2 ) Due to.