ISSN 1671-1092 CN 33-1260/TK

大坝与安全 ›› 2013 ›› Issue (2): 52-57.

• 补强加固 • 上一篇    下一篇

大化电站新机组蜗壳进口流道底板裂缝及冲淘缺陷分析及处理

黄耿   

  1. 广西桂冠大化水力发电厂大化设备技术部
  • 收稿日期:2013-03-01 出版日期:2013-05-01 发布日期:2013-05-01
  • 作者简介:黄耿(1964- ),男(壮族),广西大化人,工程师,主要从事大坝安全管理工作。

Analysis on volute cracks and erosion at the inlet passage of new unit of Dahua hydropower station and their treatments

HUANG Geng   

  1. Dahua Hydropower Plant
  • Received:2013-03-01 Online:2013-05-01 Published:2013-05-01

摘要: 大化电厂新投产的5号机组运行3年多来,历年机组检修期间,连续发现蜗壳进口过水流道存在底板裂缝和混凝土表层被冲刷、淘蚀、磨损现象。对蜗壳裂缝、冲蚀缺陷现象及处理过程分别进行简要概述,并对其产生原因的核查分析结果进行简要探讨、分析,提出对蜗壳等机组过水流道结构的运行管理要求,以期对其他类似工程起到较好的借鉴作用。

关键词: 新机组蜗壳进口流道, 裂缝冲淘, 处理, 大化电站扩建工程

Abstract: The new No. 5 unit of Dahua Power Plant has run more than three years. Over the period of unit maintenance, the backplane-cracks and washout, erosion, abrasion on the concrete surface has continuous found in volute flow passage.This article brief summarize volute cracks, erosion-corrosion phenomenon as well as the treating processes, and the verification result of their causes are discussed and analysed. Moreover, it put forward the requirements of operation management to volute flow passage structure of unit such as volute, in order to have positive reference function to other similar engineering.

Key words: inlet passage of the volute of new units, cracks erosion, treatment, extension project of Dahua hydropower plant