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冗各水电站引水发电系统位置经区位条件、岩相研究,发现该区域地下水位等水位线与岩性分布范围高度吻合,说明可溶岩区地下水位与沉积岩的沉积相有着密切关系。白云岩、灰质白云岩及白云质灰岩区岩溶相对弱发育,地下水位相对较高;灰岩区岩溶极发育,地下水位较低。同时,通过钻探、硐探、物探等勘察手段,在该区属白云岩、灰质白云岩及白云质灰岩区,未发现大规模的岩溶,与区位条件、岩性研究的结论相吻合。
The location of diversion system of the Three Gorges Hydropower Station was studied by location and lithofacies. It was found that the water level such as the groundwater level in the area is highly consistent with the lithology distribution, indicating that the groundwater level in the soluble area is closely related to the sedimentary facies of sedimentary rocks. Dolomite, gray dolomite and dolomitic limestone are relatively weakly developed and have a relatively high groundwater level; the limestone karst is extremely developed and the groundwater level is relatively low. At the same time, no large-scale karst was found in the dolomite, gray-dolomite and dolomitic limestone area by drilling, prospecting and geophysical prospecting methods, which are consistent with the conclusions of the study on the location conditions and lithology.