黄河万家寨水利枢纽排沙钢管冲蚀破坏修复  

The Y.R. Wanjiazhai Water Conservancy Project Desilting Pipe Erosion and Repair

作　　者：吴凌丞 郝楠 赵朋 WU Lingcheng;HAO Nan;ZHAO Peng(Y.R.Wanjiazhai Water Multi-Purpose Dam Project CO, LTD, Xinzhou 036412, China)

机构地区：[1]黄河万家寨水利枢纽有限公司,山西省忻州市036412

出　　处：《水电与抽水蓄能》2018年第2期106-111,共6页Hydropower and Pumped Storage

摘　　要：万家寨水利枢纽已运行18年。2010年经实测,距坝11km以上至距坝60km已经基本达到设计淤积平衡,为使万家寨水库保持必要的调蓄能力、延长水库使用寿命,水库低水位排沙运行日趋常态。排沙钢管运行频次及强度随之增大。在高流速、高含沙水流作用下,各排沙钢管出口段混凝土因运行时间差异存在不同程度冲蚀破坏,为保证排沙钢管安全稳定运行,在提高流道表面抗冲磨性能的基础上对排沙钢管出口段损坏部位按原设计体形进行修复。The Wanjiazhai Water conservancy project has been in operation for 18 years. In 2010,measured by the distance from the dam to dam above 11 km from 60 km has achieved the balance of deposition,in order to make the Wanjiazhai Reservoir to maintain the necessary storage capacity and prolong the service life of the reservoir,the low water level operation of reservoir sediment is normal. The frequency and intensity of sand pipe increases operation. In high velocity and high sand flow under the action of the steel pipes at the outlet section of concrete due to running time differences exist different degree of erosion damage,to ensure safe and stable operation of the steel pipe in the foundation to improve the abrasion resistance of the surface of the flow passage on the steel pipes at the exit section of the damaged parts were repaired according to the original design.

关 键 词：淤积平衡 排沙钢管 冲蚀 补强加固 

分 类 号：TV698.2[水利工程—水利水电工程]