摘要
论述长引水洞电站调压室的水力特点，如振渴周期长，振幅大，涌波衰减慢等。一般情况下，增减负荷引起的调压室极值水位，往往不是控制工况，尚应对可能出现的涌波叠加情况进行复核，长引水洞电站由于水击波反射较慢，故存在着若干与短引水洞所不同的特殊水力学问题。以锦屏二级水电站为例，介绍了最不利叠加工况选择方法和若干特殊水力学问题。
This paper gives an introduction about the hydraulic characteristics of the surge chamber with long_distance diversion tunnel, such as the long period of oscillation, the large oscillation wave, and the slow_attenuation wave. In general, the maximum or minimal surge water level caused by load rejection or load increment under stable operation mode is usually not the controlling value, so the possible surge superposition needs to be checked. The special hydraulic questions with long_distance tunnel are not the same as the short_distance tunnel because of the slower hammer reflected wave. This paper takes the calculation of the Jinping Ⅱ hydro_power station as example to illustrate the selection method of the worst combined condition and some special hydraulic questions.
出处
《红水河》
1999年第1期59-66,共8页
Hongshui River
关键词
调压室
涌波
水锤
水力计算
水电站
引水隧洞
surge chamber, surge, water hammer, combined condition, hydraulic calculation.
