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潇湘水电枢纽工程闸坝地基岩性软弱,力学性能较低,具有失水龟裂,暴露地表极易风化,厂房置于软弱岩层及溶岩发育的灰岩交接处,土坝地基为具有极强渗漏性的砂卵砾石层,厚达11.7～17.8m。土坝左岸为厚、巨厚灰岩,白元质灰岩,溶蚀严重,为确保坝基稳健及渗漏稳定采用一系列处理措施,以确保了工程的安全运行。
The dam foundation of Xiaoxiang Hydroelectric Project is characterized by weak lithology, low mechanical properties, water loss cracking and easy weathering on the exposed surface. The factory building is located at the junction of limestone with soft rock formation and limestone dissolution. The foundation of the earth dam has extremely strong seepage Leaky sand and gravel layer, thickness 11.7 ~ 17.8m. The left bank of earth dam is thick, thick limestone and white metamorphic limestone with serious erosion. A series of treatment measures are adopted to ensure the dam foundation stability and seepage stability so as to ensure the safe operation of the project.