白山水电站大坝为三心圆重力拱坝,坝高148米。坝基岩层主要为古老混合岩、片麻岩及中生代火山屑岩、砂页岩、花岗岩等,饱和抗压强度1,250公斤/厘米~2,岩石坚硬,但也有断层和岩脉穿插。坝基断层多,节理、裂隙较发育,并有缓倾角裂隙。其中较大的断层有F_1、F_3位于左岸坝头处,另一条岩脉W_2为细粒角闪斜长岩,横穿左岸坝肩。 Baishan Hydropower Dam gravity center of three arch dam, 148 meters high dam. Dam foundation rock is mainly ancient mixed rock, gneiss and Mesozoic volcanic rocks, sand shale, granite, saturated compressive strength of 1,250 kg / cm ~ 2, the rock is hard, but also fault and vein interludes. The dam foundation has many faults, joints and fissures, and has gentle dip cracks. Among them, the larger faults are F_1 and F_3 located at the head of the left bank and the other ditches are fine-grained hornfels and cross the left bank abutment.