[1]徐镇扬,田涌.水电站高陡边坡开挖稳定性数值模拟研究[J].江苏水利,2025,(12):19-25.
　XU Zhenyang,TIAN Yong.Numerical simulation study on excavation stability of high and steep slopes in hydropower stations[J].JIANGSU WATER RESOURCES,2025,(12):19-25.
点击复制

水电站高陡边坡开挖稳定性数值模拟研究()

《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2025年12期
页码:
19-25
栏目:
水利规划与设计
出版日期:
2025-12-01

文章信息/Info

Title:
Numerical simulation study on excavation stability of high and steep slopes in hydropower stations
文章编号:
1007-7839（2025）12-0019-0007
作者:
徐镇扬; 田涌
（江苏省工程勘测研究院有限责任公司，江苏 扬州225000）
Author(s):
XU Zhenyang;  TIAN Yong
（Jiangsu Province Engineering Investigation and Research Institute Co., Ltd., Yangzhou 225000, China）
关键词:
高陡边坡; 边坡稳定性; 断层破碎带; 力学参数; 数值模拟
Keywords:
high and steep slopes;  slope stability;  fault fracture zone;  mechanical parameters;  numerical simulation
分类号:
TV314
文献标志码:
A
摘要:
针对江苏某水电站右岸坝肩高岩质开挖边坡为研究对象，基于RFPA3D-Centrifuge数值模拟方法，系统研究边坡开挖过程中的应力场演变、变形特征及关键断层破碎带力学参数对边坡稳定性的影响。结果表明，天然条件下，边坡顶部和中部区域应力集中现象显著；开挖过程中，卸荷效应导致应力重分布，断层和软弱结构面附近变形加剧；边坡破坏机制主要表现为应力重分布、岩体卸荷及裂隙扩展的耦合作用，断层交汇处形成应力集中区。通过对断层破碎带的力学参数敏感性分析，发现内摩擦角和抗压强度显著提升边坡安全系数，而弹性模量影响相对较小。断层F7稳定性优于F6，安全系数分别为1.48和1.32，这与几何形态及应力分布特征有关，研究成果可为类似工程提供理论支持和技术指导。
Abstract:
Taking the high rock excavation slope of the right bank abutment of a hydropower station in Jiangsu Province as the research object, based on the RFPA3D-Centrifuge numerical simulation method, the influence of the stress field evolution, deformation characteristics and mechanical parameters of the key fault fracture zone on the slope stability during the slope excavation process is systematically studied. The results show that under natural conditions, the stress concentration phenomenon is significant in the top and middle areas of the slope. During the excavation process, the unloading effect leads to stress redistribution, with intensified deformation near faults and weak structural planes. The failure mechanism of the slope is primarily characterized by the coupling effects of stress redistribution, rock mass unloading, and crack propagation, forming stress concentration zones at fault intersections. Through the sensitivity analysis of mechanical parameters in the fault fracture zone, it was found that the internal friction angle and compressive strength significantly enhance the safety factor of the slope, while the elastic modulus has a relatively small influence. The stability of fault F7 is superior to that of fault F6, with safety factors of 1.48 and 1.32 respectively. This is related to the geometric shape and stress distribution characteristics. The research results can provide theoretical support and technical guidance for similar projects.

参考文献/References:

[1]邢继宏，杨聚伟，赵杰，等. 抽水蓄能电站岩质边坡消落带生态修复研究[J]. 长江技术经济，2024，8（6）：44-52.
[2]AZARAFZA M，AKGUN H，GHAZIFARD A，et al. Discontinuous rock slope stability analysis by limit equilibriumapproaches-a review[J]. International Journal of DigitalEarth，2021，14（12）：1918-1941.
[3]VICK L M，BOHME M，ROUYET L，et al. Structurally controlled rock slope deformation in Northern Norway[J].Landslides，2020，17（8）：1-32.
[4]郑颖人，赵尚毅. 有限元强度折减法在土坡与岩坡中的应用[J]. 岩石力学与工程学报，2004（19）：3381-3388.
[5]漆芍见，范宣梅，夏明垚，等. 跨逆断层岩质边坡上下盘动力响应和破坏模式振动台试验[J]. 地质科技通报，2025，44（1）：138-149.
[6]STEAD D，WOLTER A. A critical review of rock slope failure mechanisms: the importance of structural geology[J]. Journal of Structural Geology，2015，74（5）：1-23.
[7]WYLLIE D C，MAH C W，KEATON J R. Book review/rock slope engineering：civil and mining（4th Edition）[J]. Environmental & Engineering Geoscience，2007，13（4）：369-370.
[8]刘毛毛，石振明，李博，等. 基于DEM-FDM耦合的顺层岩质边坡强震动力响应及破坏模式分析[J]. 地球科学，2024，49（8）：2799-2812.
[9]PAN Y，WU G，ZHAO Z，et al. Analysis of rock slope stability under rainfall conditions considering the water-induced weakening of rock[J]. Computers and Geotechnics，2020，128（12）：103806.
[10]孙鹏昌，卢文波，雷振，等. 单薄山体岩质高边坡爆破振动响应分析及安全控制[J]. 岩土工程学报，2021，43（5）：877-885.
[11]RODRIGUEZ J，MACCIOTTA R，HENDRY M T，et al. UAVs for monitoring，investigation，and mitigation designof a rock slope with multiple failure mechanisms：A case study[J]. Landslides，2020，17（9）：2027-2040.

相似文献/References:

[1]吴 洁,仇 宁,童 雷.板桥河闸高陡边坡基坑支护施工技术研究[J].江苏水利,2016,(12):56.
　WU Jie,QIU Ning,TONG Lei.Research on construction technology of foundation pit support on high and steep slope of Banqiaohe sluice[J].JIANGSU WATER RESOURCES,2016,(12):56.
[2]张舶航,史冠宇,张蕾.不同地震加速度影响下边坡安全性数值模拟[J].江苏水利,2024,(08):12.
　ZHANG Bohang,SHI Guanyu,ZHANG Lei.Numerical simulation of slope safety under different seismic accelerations[J].JIANGSU WATER RESOURCES,2024,(12):12.
[3]李强,蔡舒凌,俞翔,等.降雨及水位骤降作用下膨胀土边坡换填加固效果数值研究[J].江苏水利,2025,(08):49.
　LI Qiang,CAI Shuling,YU Xiang,et al.Numerical study on replacement and reinforcement effect of expansive soil slope under rainfall and sudden water level drop[J].JIANGSU WATER RESOURCES,2025,(12):49.
[4]龚畅,马悦,程硕.快速降水后土坝边坡稳定性的可靠性分析[J].江苏水利,2025,(08):68.
　GONG Chang,MA Yue,CHENG Shuo.Reliability analysis of earth dam slope stability after rapid water level drop[J].JIANGSU WATER RESOURCES,2025,(12):68.
[5]王俊,周威,赵倩,等.水位波动导致的堤防破坏稳定性分析[J].江苏水利,2025,(09):5.
　WANG Jun,ZHOU Wei,ZHAO Qian,et al.Stability analysis of embankment damage caused by water level fluctuations[J].JIANGSU WATER RESOURCES,2025,(12):5.
[6]程硕,龚畅,马悦.洪水和渗漏作用下河堤的稳定性分析[J].江苏水利,2025,(10):54.
　CHENG Shuo,GONG Chang,MA Yue.Analysis of the stability of river embankments under flood and seepage[J].JIANGSU WATER RESOURCES,2025,(12):54.

备注/Memo

备注/Memo:
收稿日期：2025-06-04
作者简介：徐镇扬（1993—），男，工程师，本科，主要从事工作或研究方向为水利水电工程。E-mail：da984730@163.com
更新日期/Last Update: 2025-12-01