[1]郭 坤,姜元俊*,朱元甲,等.湿雪雪崩冲击刚性挡墙的实验研究[J].山地学报,2026,(1):63-73.[doi:10.16089/j.cnki.1008-2786.000947]
　GUO Kun,JIANG Yuanjun*,ZHU Yuanjia,et al.Experimental Study on the Impact of Wet Snow Avalanche on Rigid Retaining Walls[J].Mountain Research,2026,(1):63-73.[doi:10.16089/j.cnki.1008-2786.000947]
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湿雪雪崩冲击刚性挡墙的实验研究()

《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2026年第1期
页码:
63-73
栏目:
山地灾害
出版日期:
2026-02-20

文章信息/Info

Title:
Experimental Study on the Impact of Wet Snow Avalanche on Rigid Retaining Walls
文章编号:
1008-2786-(2026)1-063-11
作者:
郭 坤1; 2; 姜元俊1*; 朱元甲1; 2; 赵斌滨3; 韦粤语4
(1. 中国科学院、水利部成都山地灾害与环境研究所 山地自然灾害与工程安全重点实验室, 成都 610213; 2. 中国科学院大学,北京 100049; 3. 国家电网 国网电力工程研究院有限公司,北京100069; 4. 重庆交通大学 河海学院,重庆 400074)
Author(s):
GUO Kun1; 2;  JIANG Yuanjun1*;  ZHU Yuanjia1; 2;  ZHAO Binbin3;  WEI Yueyu4
(1. Key Laboratory of Mountain Hazards and Engineering Resilience, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Resources, Chengdu 610213, China; 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.State Grid Electric Power Engineering Research Institute Co., Ltd., State Grid Corporation of China, Beijing 100069, China; 4.School of River and Ocean, Chongqing Jiaotong University, Chongqing 400074, China)
关键词:
湿雪雪崩;  刚性挡墙;  冲击力;  堆积高度;  现场实验
Keywords:
wet-snow avalanche;  rigid wall;  impact force;  deposition height;  in-situ experiment
分类号:
P426.63+6
DOI:
10.16089/j.cnki.1008-2786.000947
文献标志码:
A
摘要:
湿雪雪崩是中国藏东南地区常见的自然灾害,严重威胁区域经济社会安全。前期研究多探讨干雪雪崩对结构物的冲击作用,针对湿雪雪崩的研究相对匮乏。本文在西藏藏东南嘎隆拉地区开展了现场模型实验,揭示了湿雪因黏聚力作用而产生的“分层直冲—跃顶高抛—超顶堆积”冲击模型。基于该现场实验数据,研究明确了该模型冲击阶段的判别条件以及堆积高度时程计算公式,并验证当折减系数设定为0.7,计算结果与实验数据高度吻合; 进一步提出了一种基于堆积高度的冲击力学模型,与Ashwood模型和Tan模型对比表明,本文模型计算结果与实验数据更为一致,而后两者计算值明显偏低; 定量分析了冲击过程中各分力在总冲击力中的占比演变,阐明了动压力主导向静压力主导的转变机制。研究成果可为湿雪雪崩防灾减灾设计提供重要的参考依据。
Abstract:
Wet-snow avalanches occur frequently in southeastern Xizang, China and pose severe threats to regional economic and social security. Previous studies primarily focused on the impact of dry-snow avalanches on structures, with relatively limited research on wet snow avalanches.
In this study, it conducted a series of in-situ chute experiments in the vicinity of the Galongla Mountain, southeastern Tibet Plateau of China to investigate the interaction between wet-snow avalanche and rigid wall. It revealed an impact model of wet-snow avalanche characterized by three stages: stratified direct impact — over-top projecting — super-top accumulation, which quite possibly was due to cohesive forces existed in wet-snow. Based on the in-situ experiments, the study established discriminant conditions for the three impact stages, and a formula for calculating accumulation height against time was proposed, which was verified that when the reduction coefficient was set to 0.7, the calculated results closely matched the experimental data. Furthermore, a geophysical impact model based on accumulation height was developed. By comparisons with Ashwood's model and Tan's model, it demonstrated that the calculated results by the proposed model aligned more closely with experimental data, while the two conventional models yielded significantly lower values, particularly for the super-top accumulation stage. The evolution of each force component's proportion in the total impact force was quantitatively analyzed, elucidating the transition mechanism from dynamic pressure dominance to static pressure dominance.
The research findings provide an important reference for the design of disaster prevention and mitigation measures for wet snow avalanches.

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备注/Memo

备注/Memo:
收稿日期(Received date): 2026- 01-14; 改回日期(Accepted date):2026- 02-24
基金项目(Foundation item): 国家自然科学基金(42172320)。[National Natural Science Foundation of China(42172320)]
作者简介(Biography): 郭坤(2000-),男,河南开封人,硕士研究生,主要研究方向:岩土工程与地质灾害防治。[GUO Kun(2000-), male, born in Kaifeng, Henan province, M.Sc. candidate, research on geotechnical engineering and geological disaster prevention] E-mail: guokun@imde.ac.cn
*通讯作者(Corresponding author): 姜元俊(1982-),男,博士,研究员,主要研究方向:岩土工程与地质灾害防治。[JIANG Yuanjun(1982-), male, Ph.D., professor, research on geotechnical engineering and geological disaster prevention] E-mail: yuanjun.jiang.civil@gmail.com
更新日期/Last Update: 2026-01-30