According to the results of the satiable modle test and trdimensional seepage computation , the structure arrangement of the cushion bottom could be asserted . to recheck the factors of safety against overturning and float flotation of cushion bottom , the stability computation methods of bottom of the literature , xiao wan hydraulic power station and ertan hydraulic power station were refereed 根據(jù)穩(wěn)定模型試驗(yàn)及三維滲流計(jì)算成果,確定水墊塘底板的結(jié)構(gòu)布置,參考國內(nèi)小灣、二灘及參考文獻(xiàn)建議的底板穩(wěn)定計(jì)算方法,復(fù)核水墊塘底板的抗傾、抗浮穩(wěn)定。