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1 概述白龟山水库顺河坝坝基分布在第四系冲击层,第四系冲击层中下部为中粗砂和砂卵石。中粗砂和砂卵石层属强透水层,造成库水位沿坝基强透水层向库外渗漏,为了解决坝基下伏强透水层渗漏问题,根据白龟山水库坝基的地质条件,选用高压喷射注浆技术在坝基下伏强透水层范围内沿东西向喷注防渗墙。2 地质条件高喷防渗墙选在顺河坝5+000～5+399坝段,坝上游平台高程约104.5m,坝体主要为重粉质壤土,厚约10m,坝基上
1 Overview Baiguishan reservoir cistern dam foundation located in Quaternary impact layer, Quaternary impact layer in the lower part of coarse sand and gravel. In the sand and gravel layer is a strong permeable layer, causing the reservoir water level along the base of the permeable layer of water leakage to the reservoir outside, in order to solve the leakage of the underlying permeable layer, according to the geological conditions of Baiguishan dam foundation, the selection of high pressure Jet grouting technology in the foundation under the strong permeable layer along the east-west wall injection jet cut-off wall. 2 Geological conditions High-jetting impervious wall is selected in Shun dam 5 + 000 ~ 5 + 399 dam section, dam upstream platform elevation of about 104.5m, the dam is mainly heavy silty loam, about 10m thick, dam foundation