浅析芦毛沟水库大坝除险加固设计

Brief analysis on risk removal reinforcement design of Lumaogou Reservoir Dam

芦毛沟水库经过多次除险加固,依然存在诸多安全隐患。本文在分析水库地质条件的基础上,复核坝顶安全高程、分析填筑土体渗透安全性、研究护坡破损坍塌状况,选定副坝坝顶填筑黏土培厚、坝脚排水体翻修、草皮护坡改造等措施。通过计算不同水位及工况下的最小安全系数可知,加固后坝体满足规范要求,除险加固效益显著。

Lumaogou Reservoir undergoes risk removal reinforcement for many times,but there are still many safety hazards.In the paper,on the basis of analyzing geological conditions of the reservoir,dam crest safety elevation is checked,filled soil seepage security is analyzed,revetment damage collapse is studied,auxiliary dam crest filled clay thickness,dam foot water drainage renovation,grass slope protection transformation and other measures are selected.It is known that the dam meets the requirements in the specification after reinforcement through calculating the minimum safety factor of different water levels and working conditions,and the risk removal reinforcement effect is remarkable.