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.
出处
《人民长江》
北大核心
2012年第22期39-41,共3页
Yangtze River
关键词
突水
塌方
围岩稳定
大岗山水电站
water outburst
collapse
stability of surrounding rock
Dagangshan Hydropower Station
