龙江电站导流洞塌方处理  

Diversion tunnel collapse treatment in Longjiang power station

作　　者：黄相军[1] 王鹤[1] 

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130021

出　　处：《东北水利水电》2010年第7期14-14,17,共2页Water Resources & Hydropower of Northeast China

摘　　要：云南龙江电站导流洞开挖过程中发生了规模较大的塌方,文章分析了塌方的原因。有此基础上,提出的处理方案是:将塌方体挖除,使该段变成明拱;加大该段的衬砌面,经计算需扩径68cm;结构混凝土施工完成达到28d龄期后,塌坑应进行回填,回填材料应以风化砂为主。The large-scale collapse occurred during the construction of diversion tunnel in Longjiang power sta-tion of Yunnan province,the paper analyzes the collapse causes.Based on the analysis,the paper proposes these treatment schemes.The schemes include that the section of collapse body would change the open arch by excava-tion,the lining surface of collapse section of would increase,expanding diameter 268cm by calculation,the col-lapse pit should be backfill when the structural concrete sonstruction can reach to 28d,the backfill material is mainly the weathered sand.

关 键 词：塌方处理 导流洞 龙江电站 

分 类 号：TV551.12[水利工程—水利水电工程]