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[1]郭楠,魏小娜,杨校辉,等.考虑基质吸力的Morgenstern-Price法多级黄土边坡稳定性分析*[J].中国安全生产科学技术,2025,21(11):98-106.[doi:10.11731/j.issn.1673-193x.2025.11.012]
　GUO Nan,WEI Xiaona,YANG Xiaohui,et al.Stability analysis of multi-stage loess slopes using the Morgenstern-Price method considering matric suction[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2025,21(11):98-106.[doi:10.11731/j.issn.1673-193x.2025.11.012]
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考虑基质吸力的Morgenstern-Price法多级黄土边坡稳定性分析*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
21
期数:
2025年11期
页码:
98-106
栏目:
职业安全卫生管理与技术
出版日期:
2025-11-30

文章信息/Info

Title:
Stability analysis of multi-stage loess slopes using the Morgenstern-Price method considering matric suction
文章编号:
1673-193X(2025)-11-0098-09
作者:
郭楠; 魏小娜; 杨校辉; 朱文杰; 侯浩林
(1.兰州理工大学 土木与水利工程学院，甘肃 兰州 730050；
2.兰州理工大学 西部土木工程防灾减灾教育部工程研究中心，甘肃 兰州 730050)
Author(s):
GUO Nan;  WEI Xiaona;  YANG Xiaohui;  ZHU Wenjie;  HOU Haolin
(1.School of Civil and Hydraulic Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China;
2.Engineering Research Center of Disaster Prevention and Mitigation in Western Civil Engineering,Ministry of Education,Lanzhou University of Technology,Lanzhou Gansu 730050,China)
关键词:
非饱和黄土多级边坡; 稳定性计算; 敏感性分析; 数值模拟; 现场监测
Keywords:
unsaturated loess multi-stage slopes;  stability calculation;  sensitivity analysis;  numerical simulation;  field monitoring
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2025.11.012
文献标志码:
A
摘要:
为科学解决黄土高原公路建设中频繁穿越复杂湿陷性黄土峁梁沟壑区时日益突出的高陡路堑边坡稳定与防护问题，基于同时满足力和力矩平衡，且适用于任意滑移面的Morgenstern-Price法，引入基质吸力的影响，提出具有非饱和参数的边坡安全系数解析式，揭示湿陷性非饱和黄土多级边坡的稳定性随吸力变化的机理，并通过MATLAB软件编程、Geo Studio有限元模拟和现场监测等手段，对多级边坡稳定性进行分析。研究结果表明：该稳定性算法较传统方法安全系数提高16.85%；在土体物理力学参数中，黏聚力和内摩擦角是影响边坡稳定的最主要因素，在几何参数中，坡比对稳定性的影响最为显著，而坡高对边坡稳定性的影响相对最小；将所提出的考虑基质吸力的Morgenstern-Price法理论计算结果，分别与数值模拟结果、现场监测结果进行对比，验证该方法的可靠性。研究结果可为实际湿陷性非饱和黄土多级边坡的稳定性分析提供理论参考。
Abstract:
In order to scientifically address the increasingly prominent issues of stability and protection of high-steep cut slopes in highway construction on the Loess Plateau,which frequently traverses complex areas of collapsible loess hilly-gully regions,this study proposes an analytical formula for the slope safety factor incorporating unsaturated parameters.This formulation is based on the Morgenstern-Price method-which satisfies both force and moment equilibrium and is applicable to arbitrary slip surfaces-and introduces the influence of matric suction.The mechanism behind the stability variation of unsaturated collapsible loess multi-stage slopes with changing suction is clarified.The stability of multi-stage slopes was analyzed through MATLAB software programming,GeoStudio finite element simulation,and field monitoring.The results indicate that the proposed stability algorithm increases the safety factor by 16.85% compared to traditional methods.Among the physical-mechanical parameters of the soil,cohesion and internal friction angle are the most primary factors affecting slope stability.Among the geometrical parameters,the slope ratio has the most significant influence on stability,whereas the slope height has the relatively smallest impact.The theoretical calculation results from the proposed Morgenstern-Price method,which incorporates matric suction,were compared with numerical simulation results and field monitoring results,thereby confirming the reliability of the method.The findings provide a theoretical reference for the stability analysis of practical unsaturated collapsible loess multi-stage slopes.

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期： 2025-08-11
* 基金项目： 国家自然科学基金项目（52168051，42462028，52368049）；甘肃省杰出青年基金项目（25JRRA057）
作者简介： 郭楠，博士，副教授，主要研究方向为非饱和土与特殊土及地基处理等。
更新日期/Last Update: 2025-12-03