白石水库工程建设中新技术的研究与应用

Research and Application of New Techniques in the Construction of Baishi Reservoir

白石坝坝址位于气候条件恶劣的北方严寒地区 ,坝体结构复杂 .为此开展了一系列攻关课题的研究 ,并应用到白石水库工程建设中 ,其内容包括 :(1)对施工导流进行风险决策分析 ;(2 )将 RCC配合比用于 RCD施工 ,发展了碾压混凝土筑坝技术 ;(3)底孔采用全过程仿真计算技术进行设计 ;(4 )溢流坝采用异型宽尾墩挑流消能 ;(5)在坝体越冬层面上下游采取预留缝措施 ;(6 )对旧 SDMQ12 6 0 /6 0型门机进行技术改造 ;(7)采用整体悬挂式双向对称滑模新技术 ;(8)对 GIN灌浆法进行了理论探讨和实践 .工程实践表明 。

The Baishi Dam is located in severe cold northern area of China, with a complicated structure. Therefore, a series of new techniques were researched and adopted to the Baishi Dam, including:(1) To adopt risk decision analysis for construction diversion; (2) To apply the RCC mix to the RCD construction so as to make roller compacted concrete dam technique developed;(3) To design the bottom outlets with the all process emulation calculation;(4) To use the fashion flaring piers in spillway dam;(5) To take the measure of pre leaving cracks on the upstream and downstream sides of the overwintering faces of dam;(6) To transform technically the old SDMQ 1260/60 portal crane;(7) To adopt the monoblock suspension and two way symmetry slip form;and (8)To probe into theoretically and practice GIN grouting method. The project practice shows that the remarkable benefits were gained from these new techniques.