移动式水力清淤装置原型试验研究  

Prototype experimental study on moveable hydro-suction dredging device

作　　者：李焕新 刘定民 魏加华[2,3,4] 雷涛 薛世军 李明 段炎冲 LI Huanxin;LIU Dingmin;WEI Jiahua;LEI Tao;XUE Shijun;LI Ming;DUAN Yanchong(Management Center of Donglei Yellow River Pumping Project,Weinan 715300,China;Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;Key Laboratory of Hydrosphere Sciences of the Ministry of Water Resources,Tsinghua University,Beijing 100084,China)

机构地区：[1]渭南市东雷抽黄工程管理中心,陕西渭南715300 [2]清华大学水利水电工程系,北京100084 [3]清华大学水圈科学与水利工程全国重点实验室,北京100084 [4]清华大学水利部水圈科学重点实验室,北京100084

出　　处：《水力发电学报》2024年第2期67-74,共8页Journal of Hydroelectric Engineering

基　　金：清华大学水沙科学与水利水电工程国家重点实验室资助(2022-KY-04)。

摘　　要：经济高效的泥沙清淤一直是泥沙工作者追求的目标之一。前期室内试验表明近期提出的一种移动式水力清淤装置具有经济高效的清淤能力和较好的应用前景。为进一步检验其现场应用效果,本文在室内试验的基础上,进一步将该装置在陕西渭南东雷抽黄工程东雷一级站内的8#前池和进水闸外的黄河边滩进行了原型试验。结果表明:装置在两个试验点抽沙时水体均可维持较高的含沙量(平均含沙量分别可达560 kg/m^(3)和330 kg/m^(3),高于室内试验及传统吸排沙装置的结果),展示出优越的现场清淤效果。针对试验站点现存的泥沙淤积问题,提出了工程布置的优化建议,建议将前池的上中段改建为沉沙池并采用本装置实时抽沙,不仅可减少泥沙淤积继而保持泵站长期稳定运行,抽出的泥沙还可作为建筑用沙使用,兼具工程应用和泥沙资源利用的效益。Economical and efficient sediment dredging is a key objective pursued by sediment workers.Previous indoor experimental results have demonstrated the promising dredging capacity and potential application of a recently suggested movable hydraulic dredging device.To further evaluate the device's effectiveness in practical field applications,this study conducts prototype experiments at two representative locations:Forebay No.8 and the Yellow River bank in front of a water intake,both located within the first level station of Donglei Yellow River Pumping Project in Weinan,Shanxi.The results reveal the device effectively maintains a high sediment concentration throughout the entire dredging process.At the two sites,the mean sediment concentration reaches 560 kg/m^(3)and 330 kg/m^(3)respectively,obviously higher than those achieved by the previous indoor experiments and the traditional hydro-suction devices.These outcomes underscore the exceptional prototype dredging efficiency of our new design of the device.We have achieved an optimized scheme to address the current sedimentation issue faced by the pumping station-constructing a desilting basin in the upper and middle sections of Forebay No.8,in combination with application of the device.Implementing this approach will achieve significant dredging and engineering benefits.Not only can sedimentation be reduced substantially,ensuring the long-term stable operation of the pumping station,but the obtained sediment can be utilized as construction sand,further enhancing its practical value.

关 键 词：移动清淤 原型试验 射流冲沙 高含沙 

分 类 号：TV93[水利工程—水利水电工程]