Transformation design of spillway gate and hoist of Longyangxia Hydropower Plant
In the original design of Longyangxia Hydropower Plant,the spillway bulkhead gate is opened and closed in still water,which is operated by a one-way gantry crane on the dam crest of the spillway through mechanical automatic pick-up beam.In view of the large reservoir capacity above the spillway weir crest elevation,it is very necessary to reconstruct the bulkhead gate into an emergency gate so that it can be closed in flowing water and improve the safety guarantee of the radial service gate,thus ensuring the safe operation of the project.In combination with the site conditions,this paper compares and selects the layout schemes of reconstructed equipment from technical and economic aspects,and finally adopts the fixed winch hoist scheme with a fixed wheel gate,which can provide technical reference for similar projects.