摘要
高拱坝枢纽采用坝身泄洪、水垫塘消能是一种较好的布置型式，但水垫塘底板的型式和尺寸及其泄洪时稳定性是它的关键技术问题。本文所研究的拱形底板是一种新型的底板型式。通过实验分析，研究了冲击射流下拱形底板失稳型式，量测了底板上、下表面压强分布，概化了时均上举力（上、下表面时均压强差）的计算公式，实测了动水荷载作用下拱端推力。研究表明：拱形底板具有整体稳定性特征，它可能是高拱坝大流量泄洪水垫塘比较理想的保护型式。
Many high arch dam projects adopt the plunge pool to dissipate energy of discharged flow from arch dam.A key problem of the design of plunge pool is the stability of liner slab.In this paper,the stability of arch slab under the action of the plunging jet is investigated.The pressures on upper and lower surfaces of the slab and push force of arch abutment are measured.A generalized formula for uplift force is proposed.The investigated results indicate that arch slab has a good stable condition and is suitable for large flood discharge of high arch dam.
出处
《水力发电学报》
EI
CSCD
北大核心
1999年第2期52-59,共8页
Journal of Hydroelectric Engineering
关键词
拱坝泄洪
水垫塘
拱形底板
上举力
稳定性
Flood discharge of arch dam\ \ Plunge pool\ \ Arch slab\ \ Uplift force
