TB水电站截流方案与现场截流分析研究  

An Analysis of the Closure Scheme and On-site Closure Analysis of TB Hydropower Station

作　　者：赵银超[1] 米热扎提 杨磊[2] 吴都督[1] 陈小云 ZHAO Yin-chao;MI Re-za-ti;YANG Lei;WU Du-du;CHEN Xiao-yun(Sinohydro Engineering Bureau 8 Co.Ltd.,Changsha 410004,Hunan Province,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,Hubei Province,China;Hubei Water General Engineering Survey and Design Co.Ltd,Wuhan 430050,Hubei Province,China)

机构地区：[1]中国水利水电第八工程局有限公司,湖南长沙410004 [2]水资源与水电工程科学国家重点实验室武汉大学,湖北武汉430072 [3]湖北水总工程勘察设计有限公司,湖北武汉430050

出　　处：《中国农村水利水电》2022年第12期200-205,共6页China Rural Water and Hydropower

基　　金：国家自然科学基金资助项目(50809052)。

摘　　要：在初设截流方案基础上,对澜沧江TB水电站进行了截流物理模型试验及数值模拟研究,确定了不同工况截流时所需的抛投料粒径和抛投强度,提出了截流推荐方案。由于实际截流施工时导流洞分流条件较差,采用数值模拟分析后可知,上游电站不同下泄流量下,截流难度都将大大增加。TB水电站与上级电站属于同一流域梯级公司,通过上级电站实施停机控泄,将下泄流量降低,最大程度上降低了截流难度,保证了截流的顺利实施。研究成果表明:模型试验与数值模拟相结合的分析方法可对截流工程的实施提供科学决策依据,配合流域梯级开发中上下游电站的“控泄助截”模式,可为类似工程的设计与实施提供成功实例参考。Based on the original design closure scheme,physical model test and numerical simulation of river closure for TB Hydropower Station in Lancang River are carried out,the particle size and intensity of dumping material required for closure under different test cases are determined,and the recommended scheme of closure is put forward.Due to the poor diversion conditions of the diversion tunnel during the actual closure construction,it can be seen from the numerical simulation analysis that the closure difficulty is greatly increased under different discharge flows of the upstream power station.TB hydropower station and upstream power station belong to the same basin cascade company.The shutdown and discharge control of the upper power station can reduce discharge,reduce the difficulty of the closure to the maximum extent,and ensure the smooth implementation of the closure.The research results show that the analysis method combining model test and numerical simulation can provide a scientific decision-making basis for the implementation of the closure project,and cooperate with the“control discharge and assist in closure”mode of the upstream and downstream power stations in the cascade development of the river basin,which serves as a reference for the design and implementation of similar projects.

关 键 词：TB水电站 截流 模型试验 数值模拟 控泄助截 

分 类 号：TV651.1[水利工程—水利水电工程]