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白龙江引水工程为一大型跨流域调水工程,水源位于白龙江迭部县代古寺至舟曲县憨班乡河段,终点为庆阳市西峰区。规划引水线路途径岷县申都乡,为了解该规划段工程地质条件,特在此开展了可控源音频大地电磁测深(CSAMT)工作,以期查明该路段地下水富水构造带分布、围岩的完整性以及穿越地下水储水构造带的分布位置等隧洞工程地质问题。结果表明,岷县申都地区地层含水较丰富,引水隧洞围岩等级相对较低,断裂、岩溶发育,岩石较破碎、软弱,应在施工中采取相应措施。
Bailongjiang Water Diversion Project is a large-scale inter-basin water diversion project. The water source is located in the section of Danban Township of Daqu County of Diebu County, Xiaoban County of Zhouqu County, and ends at Xifeng District, Qingyang City. In order to understand the engineering geological conditions of this planning section, CSAMT was conducted in order to find out the distribution of water-rich structural zones in this section of the groundwater, Rock integrity and distribution of water through the groundwater storage zone tunnel engineering geological problems. The results show that the strata of Shendu area in Minxian County are rich in water. The surrounding rock of the diversion tunnel is relatively low in grade, and fractures and karsts are developed. The rock is fragile and weak, and corresponding measures should be taken during the construction.