摘要
以滇中引水工程香炉山隧洞3号施工支洞为例,介绍大坡度长距离斜井反坡排水施工技术。3号施工支洞穿越龙蟠-乔后断裂东支(F10-3)主断带及影响带,洞室涌水突泥风险较高,通过合理的涌水量估算及水泵选型,综合考虑斜井施工期间通过3级离心泵站和2级掌子面中转水箱的设计与施工,保证了斜井施工期间抽排水的高效性,确保了斜井施工安全。
Taking No.3 construction branch of Xianglushan Tunnel of Yunnan Water Diversion Project as an example,this paper introduces the construction technology of backslope drainage of large slope and long-distance inclined shaft.No.3 construction branch tunnel crosses the main break zone and influence zone of East Branch of Longpan-Qiaohou fracture(F10-3).The risk of water inrush and mud inrush in the tunnel chamber is high.Through reasonable water inrush volume estimation and pump selection,the design and construction of grade 3 centrifugal pump station and grade 2 palm face transfer tank during inclined shaft construction are considered comprehensively,which ensures the high efficiency of pumping and draining during inclined shaft construction and ensures the safety of inclined shaft construction.
作者
唐明秀
何小江
唐志
王艳张
薛晓云
TANG Ming-xiu;HE Xiao-jiang;TANG Zhi;WANG Yan-zhang;XUE Xiao-yun(Yunnan Water Diversion Project Construction Administration.,Kunming 650000,China;POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)
出处
《云南水力发电》
2021年第6期77-80,共4页
Yunnan Water Power
关键词
大坡度
斜井
反坡排水
离心泵站
large slope
inclined shaft
backslope drainage
centrifugal pump station
