青山水库工程溢洪道消能建筑物优化设计

为优化溢洪道出口型式,大连理工大学为辽宁省葫芦岛市青山水库溢洪道消能工共进行了28个方案的模型试验,其中初设报告中的消能工对下游冲刷比较严重,需增加泄槽长度并在泄槽中增加辅助消能工。水工模型试验推荐方案为将初设报告中60m长的泄槽增加至72m,泄槽段底坡由1/30改为1/36,泄槽中增加两排交错布置的T型墩。在泄槽下游增加18m长的跌坎,跌坎深度为6m,跌坎末端齿墙深入微风化岩2.0m。该方案既不影响泄洪要求又可减小冲刷。

Optimal Design of Spillway Energy Dissipation Structures in Qingshan Reservoir Project

Dalian University of Technology conducted a total of 28 model tests for spillway energy dissipaters in Qingshan Reservoir,Huludao City,Liaoning Province,in order to optimize the spillway outlet type,wherein the energy dissipaters in the preliminary report caused serious erosion to the downstream,so it was necessary to increase the length of the chute and add auxiliary energy dissipaters in the chute.The recommended scheme for hydraulic model test is sown as follows:the 60m-long chute in the initial report is increased to 72m,the bottom slope of the chute is changed from 1/30 to 1/36,and two rows of T-type piers are increased and staggered arrangement in the chute.A drop of 18m is added with a depth of 6m in the downstream area of the chute.The key-wall at the end of the drop is 2.0m deep into the breezed rock.The scheme can reduce the erosion without affecting the requirement of flood discharge.