基于SPH-DEM的半封闭式地下空间洪水扩散过程仿真

刘佳婕; 熊昊; 陈湘生

doi:10.3973/j.issn.2096-4498.2025.S1.014

隧道建设 >

2025 , Vol. 45 >Issue S1: 125 - 135

DOI: https://doi.org/10.3973/j.issn.2096-4498.2025.S1.014

研究与探索

基于SPH-DEM的半封闭式地下空间洪水扩散过程仿真

刘佳婕 ,
熊昊 ,
陈湘生

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（1. 滨海城市韧性基础设施教育部重点实验室，广东深圳 518060； 2. 深圳大学土木与交通工程学院，广东深圳 518060; 3. 深圳市地铁地下车站绿色高效智能建造重点实验室，广东深圳 518060）

刘佳婕（1999—），女，湖南衡阳人，深圳大学土木工程专业在读硕士，研究方向为地下空间洪水模拟。E-mail： liujiajie0304@163.com。*通信作者： 熊昊， E-mail： xionghao19529@szu.edu.cn。

网络出版日期: 2025-07-15

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Simulation of Flood Routing Processes in Semi-Enclosed Underground Spaces Based on Smoothed Particle Hydrodynamics-Discrete Element Method

LIU Jiajie ,
XIONG Hao ,
CHEN Xiangsheng

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(1. Key Laboratory of Coastal Urban Resilient Infrastructures (MOE), Shenzhen 518060, Guangdong, China; 2. School of Civil and Traffic Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China; 3. Shenzhen Key Laboratory of Green and Efficient Intelligent Construction of Underground Metro Stations, Shenzhen 518060, Guangdong, China)

Online published: 2025-07-15

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摘要

为深入探究洪水在半封闭式地下空间的水流扩散过程，采用光滑粒子流体动力学（smoothed particle hydrodynamics，SPH）与离散单元法（discrete element method，DEM）耦合的方法，研究洪水侵入地下公交车站的动态过程。通过建立物理模型试验及数值模拟，对SPH-DEM耦合方法进行标定及验证，证明该方法能有效模拟洪水侵入地下空间的物理力学过程。在此基础上，对比分析洪水从地下公交车站站厅层入口和隧道口灌入2种工况下在半封闭式地下空间的扩散演变规律以及不同类型车辆的动力学响应。研究结果表明： 1）在半封闭式地下空间中，私家车相较于公交车面临的风险更高； 2）车辆周围的建筑环境对疏散逃生具有显著影响； 3）车辆的具体位置是影响疏散逃生效率的关键因素。

关键词： 耦合方法; 地下空间; 大尺度模拟; 洪涝灾害; 地下公交车站

本文引用格式

刘佳婕 , 熊昊 , 陈湘生 . 基于SPH-DEM的半封闭式地下空间洪水扩散过程仿真[J]. 隧道建设, 2025 , 45(S1) : 125 -135 . DOI: 10.3973/j.issn.2096-4498.2025.S1.014

Abstract

To explore the water flow diffusion process of floods in semi-enclosed underground spaces, a coupling method based on smoothed particle hydrodynamics (SPH) and discrete element method (DEM) is employed to simulate the dynamic process of flood invasion into underground bus stations. Then, a physical model experiment and numerical simulation are conducted to calibrate and validate the SPH-DEM coupling method, and the results demonstrate that the proposed method can effectively simulate the physical and mechanical processes of flood invasion into underground spaces. On this basis, the flood diffusion and evolution patterns in semi-enclosed underground space under two simulation conditions, floods from station hall and tunnel entrances, are examined, and the dynamic responses of various vehicles are analyzed. The research results indicate that: (1) In semi-enclosed underground spaces, private cars are subject to higher risks compared to buses. (2) Architectural environment around the vehicles significantly influences the evacuation and escape. (3) The specific location of the vehicles is a primary factor affecting the efficiency of evacuation and escape.

Key words： smoothed particle hydrodynamics and discrete element method coupling method; underground space; large-scale simulation; flood disaster; underground bus station

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