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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2025, Vol. 44 ›› Issue (10): 83-90.DOI: 10.3969/j.issn.1674-0696.2025.10.11

• 港口航道·水利水电·资源环境 • 上一篇    

基于Massflow模型的三眼峪泥石流沟数值模拟与危险性评价

杨乐1,3，黄瑶1,2，刘兴荣2，郑力1，王玉昆2   

  1. (1. 重庆交通大学 河海学院，重庆 400074；2. 甘肃省科学院地质自然灾害防治研究所，甘肃 兰州 730099； 3. 长江师范学院 土木建筑工程学院，重庆 408100)
  • 收稿日期:2024-10-12 修回日期:2025-02-15 发布日期:2025-11-06
  • 作者简介:杨乐(1978—)，女，重庆涪陵人，博士，正高级工程师，主要从事岩土工程方面的研究。E-mail：20180019@yang.edu.cn 通信作者：黄瑶(1998—)，女，重庆奉节人，硕士研究生，主要从事岩土工程方面的研究。E-mail：807101655@qq.com
  • 基金资助:
    甘肃省科技重大专项项目（23ZDFA009）；甘肃省科学院重大专项项目（2024ZDZX-02）；甘肃省科学院重点科技研发项目（2023ZDYF-03）

Numerical Simulation and Hazard Evaluation of Debris Flow Ditch at Sanyanyu Based on Massflow Model

YANG Le1,3, HUANG Yao1,2, LIU Xingrong2, ZHENG Li1, WANG Yukun2   

  1. (1. School of River ＆ Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China. 2. Geological Hazards Prevention Institute, Gansu Academy of Sciences, Lanzhou 730099, Gansu,China. 3. School of Civil and Architectural Engineering, Yangtze Normal University, Chongqing 408100, China)
  • Received:2024-10-12 Revised:2025-02-15 Published:2025-11-06

摘要： 为了探究甘肃舟曲三眼峪泥石流沟布设拦挡工程后的治理效果，主要运用Massflow软件模拟分析三眼峪沟在不同降雨量条件下（P=1%、P=2%、P=0.5%）设置拦挡坝+排导槽后的泥深、流速及范围等特征，研究雨量及支挡因素对泥石流沟的影响，最后对治理后的三眼峪泥石流沟进行危险性分区。研究结果表明：无拦挡工程时，泥深和流速的峰值与降雨强度成正相关关系；设置拦挡工程上游的泥深增加较明显，拦挡下游的泥石流泥深有较明显的下降，堆积区泥深降幅可达4 m；治理后，高危险区由59.6%降至27.2%，拦挡坝与排导槽治理效果显著，地质灾害危险程度大幅度减弱。研究成果可为该地区泥石流防治工程加固、优化设计、监测等后续工作奠定前期基础和科学依据。

关键词: 岩土工程； 泥石流；Massflow；拦挡工程；雨量；危险性

Abstract: In order to investigate the treatment effect after the deployment of retaining works of the debris flow ditch at Sanyanyu in Zhouqu, Gansu Province, Massflow software was mainly used to simulate and analyze the characteristics such as the mud depth, flow rate and range after setting the retaining dam + drainage channel at the Sanyanyu Ditch under different rainfall conditions (P=1%, P=2%, P=0.5%). The influence of the rainfall and the supporting barrier factors on the debris flow ditch was studied. Finally, the hazard zoning of the Sanyanyu debris ditch after treatment was carried out. The research results show that the peak values of mud depth and flow rate are positively correlated with the rainfall intensity in the case of no retaining works. When retaining works are set, the increase of mud depth in the upstream is significant, and the mud depth downstream of the retaining works decreases significantly, with the decrease of mud depth in the accumulation area up to 4 m. After the treatment, the high-risk area is reduced from 59.6% to 27.2%, and the treatment effect of retaining dam and drainage channel is remarkable, thereby the degree of geologic hazard is greatly reduced. The research results can lay the preliminary foundation and scientific basis for the reinforcement, optimized design, monitoring, and other follow-up work of the debris flow prevention and control project in this area.

Key words: geotechnical engineering; debris flow; Massflow; retaining works; rainfall; hazard

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