某抽水蓄能电站地下厂房洞室群设计

Design of Underground Powerhouse Caverns of a Pumped-Storage Hydroelectricity

抽水蓄能电站主要承担调峰、填谷、储能、调频、调相和事故备用六大基本功能。与常规水电站相比,它具有双向水流、水头高、内水压力大、机组吸出高度大、安装高程低等特点,地下厂房能很好地利用上述特点。对某抽水蓄能电站地下厂房洞室群设计进行介绍,从工程地质、主厂房洞、主变洞、母线洞、交通洞、通风兼出线洞、排风支洞、排风竖井、排水廊道等方面进行详细介绍,可为类似工程布置提供参考。

Pumped-storage hydroelectricity mainly undertakes six basic functions of peak shaving,valley filling,energy storage,frequency modulation,phase modulation and emergency standby.Compared with conventional hydropower stations,they have the characteristics of bidirectional water flow,high head,high internal water pressure,high suction height of the unit,and low installation elevation.Underground power plants can make good use of these characteristics.The design of underground powerhouse caverns of a Pumped-storage hydroelectricity is introduced in detail from the aspects of engineering geology,main powerhouse tunnel,main transformer tunnel,bus tunnel,access tunnel,ventilation and outlet tunnel,exhaust branch tunnel,exhaust shaft,drainage gallery,etc.,which can provide reference for the layout of similar projects.