摘要
通过深入的试验研究和理论分析,表明竖井泄洪洞的泄流能力受平底闸过流能力,竖井尺寸和涡室进口的控制。给出了放空洞泄流能力和最低运行水位计算公式,竖井内壁压力特性与洞径的关系,不设通气井而实现通气和排气问题。泄洪洞与放空洞结合部的边墙分别向内偏转,其后在洞顶设迎水面为圆弧的折流坎,能有效改善水流流态,且大大降低了施工难度。
Thorough experimental investigation and theoretical analysis show that the capacity of flood discharge is controlled by the inlet wear, the scale of gyrating shaft well and the configuration of spiral housing. The formula to calculate the discharge capacity of emptying tunnel and the minimum operation water level, the relationship between the characteristics of pressure and the diameter of gyrating shaft well, and the measures without ventilating shaft for air supplement and release are introduced. The flow pattern is improved effectively and the difficulty of construction is reduced greatly through the way that the inner walls of the joint part are contracted respectively and an arch sill is put on the top of the tunnel.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
2003年第2期10-14,共5页
Journal of Sichuan University (Engineering Science Edition)
基金
高等学校博士学科专项科研基金资助项目(20010610007)
四川省青年科技基金资助项目
