玛尔水电站输水建筑物设计研究  

Design research on water conveyance structure of Mahl hydropower station

作　　者：闻锐 

机构地区：[1]上海勘测设计研究院有限公司,上海200434

出　　处：《东北水利水电》2018年第1期4-6,共3页Water Resources & Hydropower of Northeast China

摘　　要：玛尔水电站是吉拉姆河干流水电开发的重要梯级电站,是"一带一路"能源发展战略的重要体现。本文基于玛尔水电站工程,对其输水建筑物进行了详细的设计;通过计算确定了坝后背管的钢衬厚度为20~32mm,外包混凝土厚度为1.50 m,并采用有限元流固耦合计算进行了坝后背管上弯段钢衬壁厚及外包混凝土的强度校核,计算结果证明管道结构设计合理;针对玛尔工程含沙量较大的问题,采用了在取水口左下侧设置冲沙孔以防止进水口淤堵,通过将冲沙孔出口由直径3.20 m渐变为1.80 m×1.80 m,并在出口段及钢管渐变段、转弯部位采用抗磨措施,减轻含沙水流的冲击磨损。Mahl hydropower station is an important cascade hydropower station in the hydroelectric development of the Jhelum River,also is the important carrier of energy development strategy for the Belt and Road Initiatives.Based on the Mahl hydropower station project,the detailed design of the water conveyance structure is carried out.By through the calculation,the steel lining thickness of penstock on downstream dam surface is determined as the 20-32 mm and the thickness of the outsourced concrete is 1.50 m,the strength check of steel lining wall thickness in upper bending section of penstock on downstream dam surface and the outsourced concrete is carried out by the finite element flow-solid coupling calculation,the calculation results show that the pipeline structure design is reasonable.According to the question of larger sediment concentration in Mahl reservoir,the flushing sluice is set up on the left lower side on the intake to prevent the clogging of the water inlet,the flushing sluice is gradient from the diameter of 3.20m to 1.80m×1.80 m and the anti-abrasion measures are adopted in the outlet section and the gradient and turning sections of the steel pipe,which could reduce the impact abrasion of the sediment laden flow.

关 键 词：输水建筑物 坝后背管 冲沙孔 有限元计算 玛尔水电站 

分 类 号：TV672[水利工程—水利水电工程]