摘要
Abstract
The inlet chambers of the No.1 and No.2 diversion tunnels and water supply tunnels of Lianghekou Hydropower Station are arranged in an underground buried straight line layout.The sealing door adopts a front type water seal and is designed economically.However,the hydraulic conditions of this project are strict,and there are many unfavorable factors in the operating environment,which poses a high risk.Moreover,due to the impact of the epidemic,the opportunity for underwater exploration,inspection,cleaning,and repair of the gate slot before closing the gate was lost during the dry season,resulting in unfavorable conditions.In response to these unfavorable conditions,the implementation of gate closure faces enormous challenges and safety risks.It is necessary to focus on exploring the timing of gate slot filling and removal,testing the selection of gate slot and gate installation,comparing and selecting gate closure schemes,and determining the timing of gate closure.Through discussions and optimization by well-known experts in the industry,the gate closure time,sequence,and appropriate gate closure method should be clarified.The final plan ensures the construction period of the tailwater reconstruction section and creates favorable conditions for achieving the goal of second phase water storage and power generation.The successful implementation and application of the diversion tunnel gate sealing construction technology in engineering can provide useful reference for similar projects at home and abroad.关键词
初期导流洞/下闸/封堵/施工技术/方案比选Key words
initial diversion tunnel/closing gate/blocking/construction technology/scheme comparison and selection分类
水利科学
