大岗山水电站3号胶带机洞塌方分析  

Analysis of collapse of NO.3 conveyor tunnel of Dagangshan Hydropower Station

作　　者：吴灌洲[1] 刘懿辉[1] 邓忠文[1] 

机构地区：[1]中国水电顾问集团成都勘测设计研究院,四川成都610072

出　　处：《人民长江》2012年第22期39-41,共3页Yangtze River

摘　　要：大岗山水电站3号胶带机洞在2009年8月5日发生了大规模突水塌方,并形成泥石流,危及隧道施工、场内交通和砂石加工系统安全。通过对塌方段地质条件、水源补给条件、隧洞围岩稳定性和塌方演变过程等的分析,探讨了该次塌方产生的具体原因。根据国内外隧洞施工经验,结合此次塌方具体工况,对原隧洞进行了封堵施工,并选定了改线方案,最大程度避免了灾害影响。The large scale water outburst collapse of NO.3 conveyor tunnel of Dagangshan Hydropower Station occurred on 5th,August,2009,which induced debris flow and threatened the construction of the tunnel,transportation in the field and aggregate production system.Through analysis of geological condition of collapse section,water source supply condition,stability of surrounding rock and evolution process of collapse,the cause of the collapse is discussed.According to the construction experience at home and abroad,combing with the specific situation of this collapse,we carried out the plugging construction in the original tunnel and determined the tunnel-line adjusting scheme,which avoid the negative impact of the disaster at the most.

关 键 词：突水 塌方 围岩稳定 大岗山水电站 

分 类 号：TV698[水利工程—水利水电工程]