高落差水闸除险加固消能设计与稳定性分析

Design and Stability Analysis for Risk Removal, Reinforcement and Energy Dissipation of High-Drop Sluice

开原市清河闸由于上游泥沙淤积、下游非法采砂等原因,清河闸上下游河道高程相差4m,在水毁后形成高落差病险水闸。以开原市清河闸为例,通过对单、多级消力池及单级跌坎式消能设施进行对比,得出跌坎式消能具有结构简单可靠、造价经济等优点,是适合高落差水闸的消能工方案;对水闸的闸室、消力池的基底应力、不均匀系数、抗滑稳定安全系数等参数进行稳定计算,计算结果表明其基底应力、消力池应力及抗滑稳定安全系数均满足规范要求。分析结果可为高落差水闸的除险加固设计提供参考。

Due to the upstream sedimentation and illegal sand mining in the Qinghe Gate of Kaiyuan City, the elevation of the upper and lower reaches of the Qinghe Gate is 4 m, which forms a high-drop sluice gate after water damage. Taking the Qinghe Gate of Kaiyuan City as an example, by comparing the single-stage, multi-stage stilling pool and single-stage falling-type energy-saving facilities, it is concluded that the falling-type energy dissipation has the advantages of simple and reliable structure and economical cost, which is suitable for high drop. The energy dissipation scheme of the sluice;the stability calculation of the parameters such as the base stress, the unevenness coefficient, the anti-sliding stability safety factor of the lock chamber and the stilling pool of the sluice, and the calculation results show that the base stress, the plunge pool stress and the anti-sliding stability The safety factor meets the requirements of the specification. The analysis results can provide reference for the reinforcement design of high drop sluice.