Design And Optimum Of The Masonry Arch Dam In Fu Jian Wan-keng Reservoir Power Station

According to the reservoir capacity, the height of barrage and installed capacity of power station, determined Wan-keng reservoir engineering grade and constructional grade. In response to the basic regional earthquake intensity had defined this engineering set up defence of earthquake-resistance was Ⅵ.The standard of flood prevention had determined the designed flood criterion, and gathered relational hydrology, weather, reservoir characteristic water height, discharge data and geologic parameter ,made sure of the physical mechanics norm of concrete C15 rough dam, built the ground for the following job.In response to dam site's landform and geologic condition compared the masonry arch dam and the masonry gravity dam. Then, recommend the masonry arch dam. compared the up and down dam axis, chose the up dam axis as the recommended dam axis .By means of arch and girder load sharing to compute the dam body stress. Use the unit height of level arch to compute each altitude's abutment stability. Put forward some design requests for dam foundation's excavation and foundational dispose. Plan the dam's observation system and setup dam body deforming observation item.To release the flood, took the surface orifice drainage into account .Compared three orifices schemes, five orifices 8 × 6m scheme was recommended. In the phase of shop drawing, the original designed project faced some serious problems in the hydro-structure model examination. Such as the stream current didn't contract to the gutter and the backward position's riverbed was washed out badly. The revamp optimum trial mostly aimed at these two aspects. One was nearside stream current returned to the gutter, the other was the ridge bodily form revamp optimize. The trial for the stream current returned to the gutter, glued a triangular wedge in nearside abutment wall original continuous ridge. Took 1.75m as the width after compared 1.05m, 1.40m and 1.75m. The ridge bodily form revamp optimum trial mostly in the original project based the tooth ridge of vanish energy's type in the continuous ridge and great differential ridge's collocation, did 8 different assembled projects' relatively examinations. Then, chose the great differential tooth ridge(bodily form Ⅷ)vanished energy type.