[1]王年香,章为民,张丹,等.高心墙堆石坝初次蓄水速率影响研究[J].郑州大学学报(工学版),2012,33(05):72-76.[doi:10.3969/j.issn.1671-6833.2012.05.016]
　WANG Nianxiang,ZHANG Weimin,ZHANG Dan,et al.Effect of Initial Impounding Speed on High Core Rock-fll Dam[J].Journal of Zhengzhou University (Engineering Science),2012,33(05):72-76.[doi:10.3969/j.issn.1671-6833.2012.05.016]
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高心墙堆石坝初次蓄水速率影响研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33
期数:
2012年05期
页码:
72-76
栏目:
出版日期:
2012-09-10

文章信息/Info

Title:
Effect of Initial Impounding Speed on High Core Rock-fll Dam
作者:
王年香; 章为民; 张丹; 等.
南京水利科学研究院岩土工程研究所,江苏南京,210024, 中国水电顾问集团成都勘测设计研究院,四川成都,610072
Author(s):
WANG Nianxiang; ZHANG Weimin; ZHANG Dan; etc;
1. Nanjing lydraulie Research Institute, Nanjing 210024, China; 2. Chengdu Investigation and Design Institute, CHECC Chengdu 610072,China
关键词:
高心墙堆石坝;  蓄水速率;  水压力差;  水力劈裂;  离心模型试验
Keywords:
high core rock-fill dam;  velocity of impounding;  difference of water pressure ;  hydraulie fractu.ring;  centrifuge modelling test
分类号:
TV32 +2
DOI:
10.3969/j.issn.1671-6833.2012.05.016
摘要:
高心墙堆石坝水力劈裂问题得到国内外学者的极大关注,特别是在初期导流洞及中期导流洞封堵后,水库水位上升速率可能很快,极易形成“水楔”作用.采用土工离心模型试验技术,模拟了长河坝心墙中存在裂缝和不同蓄水水位上升速率.模拟结果表明蓄水水位上升速率越快,心墙裂缝的内外水压力差增长越快,峰值越大,大坝允许最大蓄水速率为25.5 m/d.
Abstract:
The hydraulie fracturing of high earth - rockfill dams has been widely concered, When the initialand middle diversion tunnels are plugged, the reservoir water level may rise rapidly, and" water wedging” ac.tions may be indueed. The crack in the core and different of initial impounding speed for Changhe Dam aresimulated in centrifuge modeling tests. The faster the initial impounding speed is, the rapider the differenee ofwater pressure of the core near crack increases, and the larger the maximum difference is. The ultimate initialimpounding speed of the dam is 25.5 m/d.
更新日期/Last Update: 1900-01-01