胶结土坝漫顶溃坝模型试验研究
作者:
作者单位:

(1.黑龙江省水利科学研究院寒区工程研究所,黑龙江 哈尔滨150080;2.中国大坝工程学会,北京100048)

作者简介:

李兆宇(1984—),男,工程师,硕士,主要从事工程冻土及寒区水工建筑物抗冻技术研究。 E-mail: hljsky_leo2013@163.com

通讯作者:

中图分类号:

TV41;TV641.2

基金项目:

“十三五”国家重点研发计划(2018YFC0406801);黑龙江省应用技术研发与开发计划引导项目(GZ16B012);黑龙江省重点研发计划指导类项目(GZ20210208)


Experimental study on overtopping and dam break model of cemented soil dam
Author:
Affiliation:

(1.Cold Region Engineering Research Institute, Heilongjiang Provincial Hydraulic Institute, Harbin 150080, China;2.Chinese National Committee on Large Dams, Beijing 100084, China )

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 文章评论
    摘要:

    通过开展大尺度胶结土坝溃坝模型试验,对胶结土坝在洪水漫顶作用下的流速分布、坝体侵蚀的变化过程进行了分析,以验证胶结土坝漫顶不溃的可能性。试验结果表明:模型填筑胶结土28.d无侧限抗压强度达到4.MPa以上;胶结土坝在最大坝顶水头为55.cm、下游坡比1∶2、最大流速达5.6.m/s条件下,漫顶冲刷44.h未发生溃决破坏;漫顶冲刷后下游坝坡最大侵蚀深度为10.cm,平均侵蚀深度仅为1.07.cm;胶结土坝可有效防止洪水漫顶冲刷引发的溃决破坏。

    Abstract:

    Through the large-scale model test of cemented earth dam, the velocity distribution and the dam erosion process of cemented earth dam under the flood overtopping were analyzed to verify the feasibility of non-failure overtopping of cemented earth dam. The test results show that the unconfined compressive strength of cemented soil within the model is more than 4.MPa after 28 days. When the maximum water head at the crest of cemented earth dam is 55.cm, the downstream slope ratio is 1∶2 and the maximum velocity reaches 5.6.m/s, there is no collapse failure after the overtopping scouring for 44.h. After the overtopping scouring, the maximum erosion depth of downstream dam slope is 10.cm and the average erosion depth is only 1.07.cm, thus the cemented earth dam can effectively prevent the collapse caused by the overtopping scouring of flood.

    参考文献
    相似文献
    引证文献
引用本文

李兆宇,贾金生,苏安双,等.胶结土坝漫顶溃坝模型试验研究[J].河海大学学报(自然科学版),2022,50(5):98-104.(LI Zhaoyu, JIA Jinsheng, SU Anshuang, et al. Experimental study on overtopping and dam break model of cemented soil dam[J]. Journal of Hohai University (Natural Sciences),2022,50(5):98-104.(in Chinese))

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-09-20
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2022-09-24
  • 出版日期: