摘要
软岩洞段的安全快速开挖是导流洞施工的关键。施工中根据软岩的地质特点及导流洞开挖的断面尺寸,采取分层开挖和超前锚杆的施工方式和型钢拱架进行一次支护并对坍方进行处理。根据隧洞施工过程所存在的渗漏水问题,提出注浆堵漏的整体性防水理念,论述注浆堵漏技术的设计和施工。
The key of the diversion tunnel constrction, is safely and rapidly constructing in the section with bad geological conditions. According to geological features of the soft rock and the size, the construction methods of stratified excavation and anchor pole in advance were taken, and structure steel frames were used for the first support. In light of seepage problem of tunnel construct, this paper points whole waterproof idea of tunnel seepage, discusses the designing and construction of grouting and seepage technic, and offers base for grouting construction.
出处
《水利科技与经济》
2008年第10期847-848,850,共3页
Water Conservancy Science and Technology and Economy
关键词
水电站导流洞
软岩开挖支护
坍方处理
注浆堵漏
diversion tunnel of hydropower station
support in soft rock excavation
depose collapse
grouting and seepage
