水利水电技术2017，Vol.48Issue(11)：26-30,106,6.DOI:10.13928/j.cnki.wrahe.2017.11.005
乌东德水电站水垫塘护坡板块结构型式试验研究
Experimental study on structural pattern of slope protection slab for cushion pool of Wudongde Hydropower Station
摘要
Abstract
In order to solve the problem of the structural damage caused by the water turbulence in the cushion pool due to the discharge from high dam,the hydraulic experimental studies are respectively made on three kinds of structural patterns of the slab for the slope protection,i.e.drainage-failure,sealed and self-drainage and sealed and pumping-drainage,for the protective structure of the cushion pool with slope protection and without bottom protection for Wudongde Hydropower Station in accordance with the integral model of the hydropower station under the consideration of the most unfavorable operation condition of the local damage of the water-stop therein,in which the impacts from different patterns of the slab on the time-average pressure intensity,fluctuating pressure intensity and the correlation of the fluctuating pressure of both the downstream face and the upstream face of the slab are analyzed as well The result shows that (1) compared with the slab of drainage-failure,the impacts from the slabs of sealed and self-drainage and sealed and pumping-drainage on the fluctuating pressure are less,both can effectively reduce the difference between the time-average pressure intensities of both the sides of the slab and then make the maximum time-average pressure intensity remain below the water-head of 0.4 m;(2) the slab of sealed and self-drainage can effectively improve the synchronism between the fluctuating pressures of both the sides of the slab in the water level fluctuating zone and then increase the correlation coefficient of the fluctuating pressure intensities;(3) the excavation of the gallery for pumping-drainage has the effect to weaken the rock masses on both the banks and then is possibly unfavorable to the underground powerhouse.The structure obtained from the study can provide references for design and safe operation of the slope protection of cushion pool.关键词
乌东德水电站/水垫塘/护坡/板块结构型式/封闭自排/时均压强/相关性分析Key words
Wudongde Hydropower Station/cushion pool/slope protection/slab pattern structure/sealed and self-drainage/time-average pressure intensity/correlation analysis分类
建筑与水利引用本文复制引用
马斌,梁帅,李昕尧..乌东德水电站水垫塘护坡板块结构型式试验研究[J].水利水电技术,2017,48(11):26-30,106,6.基金项目
国家重点研发计划(2016YFC0401705) （2016YFC0401705）
国家自然科学基金创新研究群体科学基金(51621092) （51621092）
国家自然科学基金(51309177,51509180,51779167) （51309177,51509180,51779167）
高等学校学科创新引智计划(B14012) （B14012）
