渠首工程除险分析及加固补强技术研究

Analysis of Risk Removal and Research on Reinforcement Technology for Canal Head Engineering

以新疆叶县江卡渠首除险加固项目作为研究背景,针对工程现状泄洪闸冲沙闸老旧损毁严重、泄洪道冲刷岸坡垮塌的现状,在工程地质条件基础上,对河道的冲淤演变进行了分析,复核了渠首的规模和调动能力,并提出拆除闸室底板浆砌石而后浇筑混凝土,拆除重建冲砂闸和泄洪闸后消能设施及导流堤,对上游导流堤进行护坡加固的系统方案。有效解决了江卡渠首的稳定性安全问题。

In this paper,the research background is Jiangka CanalHeadReinforcement Project in Yexian County,Xinjiang.In view of the current situation of the project,the sluice and scouring sluice are seriously damaged,and the flood control channel is scouring the bank slope and collapsing.On the basis of engineering geological conditions,the evolution of erosion and sedimentation in the river channel was analyzed,and the scale and mobilization capacity of the canal head were reviewed.And a systematic plan was proposed to dismantle the masonry of the bottom plate of the gate chamber and then pour concrete,dismantle and rebuild the energy dissipation facilities and diversion embankment behind the flushing and flood discharge gates,and reinforce the upstream diversion embankment with slope protection.It effectively solves the stability and safety issues of the Jiangka Canal Head.