CAJ | 학술논문

为降低截流难度，保证澜沧江苗尾水电站截流工程成功实施，通过整体水力模型，验证双导流隧洞在进口施工围堰不同的拆除情况下，截流时导流洞的泄流能力、截流戗堤进占方式和龙口段位置是否合适。运用施工导截流水力模型试验的方法与先进的试验测试技术，进行了不同工况截流模型试验（双洞导流）研究。模型试验结果表明，采用双导流隧洞分流、单戗双向立堵进占截流的较优方案，可达到降低龙口各项水力学指标并明显减轻截流难度的目的。
위강저절류난도，보증란창강묘미수전참절류공정성공실시，통과정체수력모형，험증쌍도류수동재진구시공위언불동적탁제정황하，절류시도류동적설류능력、절류창제진점방식화룡구단위치시부합괄。운용시공도절류수력모형시험적방법여선진적시험측시기술，진행료불동공황절류모형시험（쌍동도류）연구。모형시험결과표명，채용쌍도류수동분류、단창쌍향립도진점절류적교우방안，가체도강저룡구각항수역학지표병명현감경절류난도적목적。
To decrease the difficulty of river closure and ensure the river closure project successful implementation of the Miaowei hydropower station on the Lancang river ,we verified the discharge ca-pacity of diversion tunnel ,closure invasion style and closure -gap section of embankment of the doub-le diversion tunnel when the river closure in the removal of different inlet cofferdam construction cases through the whole hydraulic model .Applying the method of hydraulic model test with construction of water diversion and closure and the advanced test technology , we carried out the different working conditions ( double hole diversion ) of river closure model test research .Model test results show that the double diversion tunnel diversion and the single crested banquette , two-way and vertical inva-sion of intercepting is a better solution , could achieve the purpose to lower the hydraulics indexes of closure-gap and significantly reduce the difficulty of river closure .