新型地锚扶壁式泥石流格栅坝基础冲刷计算方法研究

王永胜; 张岩鉴; 朱彦鹏; 闫聪

doi:10.11779/CJGE2018S1044

新型地锚扶壁式泥石流格栅坝基础冲刷计算方法研究 English Version

王永胜^{1, 2},
张岩鉴^{1, 2},
朱彦鹏^{1, 2},
闫聪^{1, 2}

1. 兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃兰州 730050;
2. 兰州理工大学土木工程学院,甘肃兰州 730050

基金项目: 国家自然科学基金项目（51768039）; 2015年度建设科技建筑节能项目（JK2015-53）

详细信息

作者简介:
王永胜(1985- ),男,副教授,主要从事滑坡泥石流防治技术研究。E-mail: wys591888@163.com。

中图分类号: P642.23;TV332
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出版历程
- 收稿日期: 2017-06-10
- 发布日期: 2018-08-24

Calculation of foundation scour for new debris flow grille dam with ground anchor and counterfort

WANG Yong-sheng^{1, 2},
ZHANG Yan-jian^{1, 2},
ZHU Yan-peng^{1, 2},
YAN Cong^{1, 2}

1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China;
2. College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China

摘要

摘要: 泥石流格栅坝工程安全稳定的关键是基础,相比外露结构的计算,基础遭冲刷掏空的问题更值得引起重视。在提出新型地锚扶壁式泥石流格栅坝的基础上,将格栅坝基础冲刷分为初期和中后期两个阶段,初期冲刷主要以坡面冲刷为主,中后期冲刷主要考虑冲坑的变化发展。基于能量法,推导了格栅坝基础冲刷深度的计算公式,通过算例分析了不同流深下的冲刷深度,并与其它公式的计算结果做了对比。结果表明：推导公式计算的冲刷深度比其它公式计算的结果都大,初期冲刷的影响在设计中应当予以重视。
- 泥石流 /
- 新型格栅坝 /
- 基础冲刷 /
- 能量法
Abstract: The foundation play a significant role in the reliability of debris flow grille dam. Compared with the exposed structures, foundation scour under debris flows is more important. On the basis of a new proposed debris flow grille dam with ground anchor and counterfort, the foundation scour is considered as two stages, that is, the initial and the mid-late. In the initial stage, surface scour is primary, and in the mid-late stage the changing and progressing of scour pit is important. The formula for calculating the scour depth of foundation of grille dam is deduced based on the energy method. The scour depth is analyzed under different flow depths based on an example. The results obtained from the above formula are compared with those obtained from the other formula. The results indicate that the scour depth by the deduced formula is larger than that by the others, and the initial scour should be considered carefully in the future design.
- debris flow /
- new grille dam /
- foundation scour /
- energy method

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参考文献(9)

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