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本文分析了龚嘴水电站消力塘的破坏情况。认为该电站消力塘内的石碴对建筑物的磨损是造成冲蚀的主要原因,而在某些部位,如消力塘右边墙,~#7、~#9孔的左右边墩部位,空蚀破坏则又是主要的。本文在结合考虑建筑物的现状、运行条件和整治工期的前提下,对上述部位的多种防空蚀措施进行了研究。结果表明,对~#10底孔出口可采用增设组合式折流设施的方法,为减少施工的复杂性及降低水流空化敏感性能,也可采用用高强混凝土将右边墙拉直,并用1:8的斜面与~#10底孔右墙相接(控制错台不超过6mm)的方案;对~#7、~#9孔的边墩,宜采用清碴和使用抗磨、抗蚀高强度混凝土将边墙全部拉直(不平整程度控制在5mm以内)相结合的方案。
This article analyzes the destruction of Tongzui Hydropower Station power ponds. It is considered that the abrasion of buildings caused by ballast in the power pond of the power station is the main cause of erosion. In some areas, such as the right wall of the Xiaotangtang and the left and right side piers of ~ # 7 and # 9 holes, Erosion damage is the main one again. In this paper, a combination of considering the status quo of buildings, operating conditions and renovation time under the premise of the various parts of the various anti-cavitation measures were studied. The results show that the outlet of # 10 at the bottom of the hole can be used to increase the combined baffle facilities, in order to reduce the complexity of the construction and reduce water flow cavitation sensitivity, but also can be used to straighten the right wall with high-strength concrete, and 1: 8 inclined surface and # 10 bottom hole right wall phase control (control of the wrong Taiwan does not exceed 6mm) program; ~ # 7, ~ # 9 hole side pier, should be used ballast cleaning and use of anti-wear, anti-corrosion high strength Concrete side wall will be straightened (uneven degree of control within 5mm) combination of programs.