一、前言 三十多年来,我国先后建造了上百座大中型水电站。随着电站装机容量的增大,进水口建筑物也日益壮观,已建进水口的最大孔口尺寸、引用流量和孔口水头,列于表1。 I. Foreword Thirty years ago, China has built hundreds of large and medium hydropower stations. As the installed capacity of power plants increases, the inlet structures are also becoming more and more spectacular. The maximum orifice size, reference flow rate and orifice head of the intakes have been built, as shown in Table 1.