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[1]张 岩,王涪江,王飞永*.基于离散元方法-计算流体力学耦合的渭河盆地水蚀型地裂缝细观成生过程数值模拟[J].地球科学与环境学报,2025,47(03):386-396.[doi:10.19814/j.jese.2024.10017]
　ZHANG Yan,WANG Fu-jiang,WANG Fei-yong*.Numerical Simulation on Microscopic Formation Process of Water Erosion-induced Ground Fissures in Weihe Basin, China Based on DEM-CFD Coupling[J].Journal of Earth Sciences and Environment,2025,47(03):386-396.[doi:10.19814/j.jese.2024.10017]
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基于离散元方法-计算流体力学耦合的渭河盆地水蚀型地裂缝细观成生过程数值模拟(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第47卷
期数:
2025年第03期
页码:
386-396
栏目:
黄河流域生态保护和高质量发展专刊(上)
出版日期:
2025-05-15

文章信息/Info

Title:
Numerical Simulation on Microscopic Formation Process of Water Erosion-induced Ground Fissures in Weihe Basin, China Based on DEM-CFD Coupling
文章编号:
1672-6561(2025)03-0386-11
作者:
张 岩1; 2; 王涪江3; 王飞永1; 2; 3*
(1.江苏省地质调查研究院 自然资源部地裂缝地质灾害重点实验室,江苏 南京 210049; 2.自然资源部陕西西安地裂缝与地面沉降野外科学观测研究站,陕西 西安 710054; 3.中国地质大学(北京)工程技术学院/地质安全研究院,北京 100083)
Author(s):
ZHANG Yan1; 2;  WANG Fu-jiang3;  WANG Fei-yong1; 2; 3*
(1.Key Laboratory of Earth Fissures Geological Disaster of Ministry of Natural Resources,Geological Survey of Jiangsu Province,Nanjing 210049,Jiangsu,China; 2.Field Scientific Observation and Research Station of Ground Fissure and Land Subsidence in Xi'an of Shaanxi,Ministry of Natural Resources,Xi'an 710054,Shaanxi,China; 3.School of Engineering and Technology/Institute of Geosafety,China University of Geosciences,Beijing 100083,China)
关键词:
地裂缝;  水蚀型;  离散元方法;  计算流体力学;  浅表水侵蚀;  成生过程;  渭河盆地
Keywords:
ground fissure;  water erosion-induced;  discrete element method;  computational fluid dynamics;  surface water erosion;  formation process;  Weihe Basin
分类号:
P694
DOI:
10.19814/j.jese.2024.10017
文献标志码:
A
摘要:
渭河盆地是我国地裂缝灾害发育最为严重的地区之一,其中水蚀型地裂缝严重制约区域经济发展。采用离散元方法(DEM)和计算流体力学(CFD),基于渭河盆地典型水蚀型地裂缝的三维地质模型,建立了水蚀型地裂缝数值模型,从细观角度分析了浅表水作用下水蚀型地裂缝的成生演化过程。结果表明:水蚀型地裂缝的成生过程具有明显阶段性,依次可划分为潜蚀成穴、暗穴扩展、塌陷成洞、扩展成缝4个阶段; 暗穴是裂缝发生的初级形态,通常先竖向发育,直至地表破裂后再横向扩展成洞,进而延伸成缝; 潜蚀成穴与暗穴扩展阶段主要为中小颗粒迁移,历时最长; 塌陷成洞与扩展成缝阶段粗颗粒快速流失,发生极快。
Abstract:
The Weihe Basin is one of the regions in China where ground fissure disasters are most severe. Among them, water erosion-induced ground fissures severely constrain regional economic development. The discrete element method(DEM)and computational fluid dynamics(CFD)were employed to establish a numerical model of water erosion-induced ground fissures based on a three-dimensional geological model of Weihe Basin. The formation and evolution processes of these ground fissures under the influence of surface water were analyzed from a microscopic perspective. The results show that the formation process of water erosion-induced ground fissures exhibits distinct stages, which can be sequentially divided into four stages, including subsurface erosion into hidden holes, hidden holes expansion, collapse forming sinkholes, and horizontal extensions into ground fissures; hidden holes represent the initial form of ground fissure development, typically growing vertically until surface rupture occurs, after which they expand into sinkholes and further extend horizontally into ground fissures; the stages of subsurface erosion into hidden holes and hidden holes expansion are primarily characterized by the migration of small to medium particles, and take the longest time; in contrast, the stages of collapse forming sinkholes and horizontal expansion into ground fissures involve the rapid loss of coarse particles and occur very quickly.

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备注/Memo

备注/Memo:
收稿日期:2024-10-11; 修回日期:2024-12-07
基金项目:国家自然科学基金项目(42207202); 自然资源部地裂缝地质灾害重点实验室开放基金项目(EFGD20240604); 自然资源部陕西西安地裂缝与地面沉降野外科学观测研究站开放基金项目(GKF2024-06)
*通信作者:王飞永(1988-),男,河北邯郸人,中国地质大学(北京)副教授,工学博士,E-mail:fy-wang@cugb.edu.cn。
更新日期/Last Update: 2025-06-20