摘要
香炉山隧洞新增竖井规划布置于4号和5号施工支洞(斜井)之间的次关键线路上,结合现场工程水文地质和施工条件初定竖井距离5号施工支洞主支洞交叉口800m,井深565.75m,衬后井径9.6m,竖井岩性主要为灰岩和安山质玄武岩、地处岩溶富水及软岩地层,将采用综合防治水措施降低突涌水风险和提高井筒结构稳定,为竖井正井法机械化施工提供保障,以期达到月综合进尺不低于35m的目标。
New shaft of Xianglushan Tunnel is planned to be arranged on the secondary key line between No.4 and No.5 construction branches(inclined shaft).Considering field engineering hydrogeology and construction conditions,the distance between the shaft and the intersection of main branch tunnel of No.5 construction branch tunnel is initially determined to be 800m,the depth of the shaft is 565.75m,and the diameter of the back shaft is 9.6m.The shaft located in karst water rich and soft rock layer,and its lithology is mainly limestone and andesitic basalt.The comprehensive water control measures will be adopted to reduce the risk of water inrush and improve the stability of shaft structure,which guarantee the mechanized construction of vertical shaft method,so as to achieve the goal of comprehensive monthly footage of no less than 35m.
作者
李世民
严定成
张鹏
张楚
李云辉
LI Shi-ming;YAN Ding-cheng;ZHANG Peng;ZHANG Chu;LI Yun-hui(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China;China Coal Mine Construction Group Corporation LTD.,Hefei 230000,China)
出处
《云南水力发电》
2021年第6期103-107,共5页
Yunnan Water Power
关键词
富水软岩
深大竖井
规划
施工方案
water-rich soft rock
deep and large shaft
planning
construction scheme
