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一、问题的提出 气垫式尾水调压室是一种新的尾水调压室型式。本文总结国外上游气垫式调压室的经验,根据我国河流特点,经过做一些研究工作后而提出的一种调压室型式。 我国西南山区某些河流,河道狭窄,洪水流量很大,洪枯水位相差20—30m,甚至可达40m。在这样的条件下修建地下式水电站,若采用开敞式尾水调压室,则要求调压室做得相当高,一般都比厂房还高,形成好几个庞大的地下洞室并列,不仅对围岩稳定很不利,而且工程量大,耗资大,工期长.图1(a)为地下式水电站采用常规开敞式尾水调压室布置示意图。
First, the issue raised Air-cushion tail water surge chamber is a new type of tail water surge chamber. This article summarizes the experience of foreign upstream air-cushion surge chamber, according to the characteristics of China’s rivers, after doing some research work and put forward a surge chamber type. Some of our country’s southwest mountainous rivers, narrow rivers, floods, flooding a flood difference of 20-30m, or even up to 40m. In such conditions, the construction of underground hydropower station, the use of open tail water surge chamber, the requirements of the surge chamber to do quite high, generally higher than the plant, the formation of several large underground caverns tied not only Surrounding rock stability is very disadvantageous, and the project is large, costly, long duration.Figure 1 (a) for the underground hydropower station using a conventional open tail water surge chamber layout diagram.