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向家坝水电站蓄水以后,大峡谷温泉将沉埋在90 m深的库水下.如何正确评价水库蓄水对大峡谷温泉的影响成为了大峡谷温泉能否异地搬迁重建的关键问题之一.为此采用地质分析与数值分析相结合的方法,从多角度分析计算了向家坝水电站蓄水以后对大峡谷温泉的影响,分析计算结果表明:水库蓄水以后,库水不会通过淹没范围内所涉及的“天窗”(大岩洞-下河坝地区、湾湾滩断层和楼东断层)大量进入温泉水层,对温泉水量和水质影响较小.并且温泉井周边的围岩最大主应力增加0.47～0.60 MPa左右,水平位移增加量6～13 mm,影响深度80 m左右,井周岩石无明显的破坏现象.因此,水库蓄水对温泉井本身无大的影响,温泉可以进行异地搬迁重建.
After the Xiangjiaba Hydropower Station, the Grand Canyon Hot Springs will be buried in a 90-m-deep reservoir. How to properly evaluate the impact of reservoir impoundment on the Grand Canyon hot springs has become one of the key issues in whether the Grand Canyon Hot Springs can relocate or rebuild This paper uses the method of geological analysis and numerical analysis to analyze and calculate the influence of Xiangjiaba Hydropower Station on the Grand Canyon hot springs after the impoundment of water from various perspectives. The analysis and calculation results show that the reservoir water will not submerge The “skylights” (Dayan-Xiaheba area, Wanwantan fault and Lou-dong fault) involved in the area entered into the hot spring water layer in a large amount, which has a small influence on the hot spring water quantity and water quality, and the surrounding rock The maximum principal stress increases by about 0.47 ~ 0.60 MPa, the horizontal displacement increases by 6 ~ 13 mm, and the depth of influence is about 80 m, and there is no obvious damage to the rock around the well.As a result, reservoir water storage has no great effect on the thermal well itself, Relocation and reconstruction.