摘要
简述了黄壁庄水库副坝地基混凝土防渗墙加固中的6次塌陷情况.以最严重的6号塌坝为例,分析了塌坝前后的坝基组成变化及塌坝进程.分析表明,坝基基岩存在溶洞及洞内潜流,致使防渗墙槽孔孔底失稳、灌浆及堵漏材料大量流失和坝基细砂层液化,导致副坝大规模塌陷.
The circumstances of the six collapses occurring during the improvement of the concrete cutoff wall in the foundation of the auxiliary dam of Huangbizhuang Reservoir are briefly presented. Variation of the dam foundation composition before and after the collapses and collapse processing are analyzed taking the sixth collapse, the most serious, as an example. Results show that there are solution caverns and submerged current in the bed rock, causing unstability in the bottom of the slot of the cutoff wall, mass loss of the jointing and plugging materials, and liquefaction of the fine size sand layer of the foundation, and finally leading to the collapse of the auxiliary dam collapsed.
出处
《水利水运工程学报》
CSCD
北大核心
2003年第4期20-24,共5页
Hydro-Science and Engineering
关键词
黄壁庄水库
副坝
塌陷
混凝土防渗墙
灌浆
基岩溶洞
细砂液化
collapse
slot of the cutoff wall
unstability in the bottom of the slot
solution cavern in the bed rock
liquefaction of fine sand
auxiliary dam of Huangbizhuang Reservoir
