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In the numerical study of groundwater seep characteristics in rock mass under different rock dip angles, the influence of seep field on internal defects such as holes and joints, the influence of seep field on rock mass stability, and the instability mechanism of rock mass under the coupling of seep field and ground stress field were seldom considered. This study employed discrete element software (PFC) to define fluid domains, simulating fluid-solid coupling evolution and rock mass failure behavior under coupled geostress and seepage fields. Macroscopic and microscopic analyses were conducted to investigate instability mechanisms. The results indicate that the coupling of high-stress fields and low-seepage fields can induce crack propagation in weak zones, such as crack tips, leading to rock mass failure. Compared to stress fields alone, coupling effects exhibit distinct failure patterns. Additionally, under low water pressure, seepage pressure can suppress tensile crack propagation at crack tips, primarily resulting in compressive failure zones. This research provides theoretical insights for understanding seepage behavior and assessing rock mass stability in complex engineering conditions.

, authors=Jianguo PAN1, Lihai TAN2, Jia SHENG3, Huaide PENG2, authorsList=Jianguo PAN, Lihai TAN, Jia SHENG, Huaide PENG, authorCompany=null, correspAuthors=Lihai TAN, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1311351103728476274, articleId=1311351103237742704, tenantId=1146029695717560320, journalId=1146123346816638986, language=CN, title=不同岩层倾角下岩体内部地下水渗流特征数值研究, columnId=1175805041991631542, journalTitle=铀矿冶, columnName=开采·选冶, runingTitle=null, highlight=null, articleAbstract=

在不同岩层倾角下岩体内部地下水渗流特征的数值研究中,较少考虑渗流场对内部孔洞、节理等缺陷的影响,渗流场对岩体稳定性的影响,以及渗流场-地应力场耦合下岩体失稳机制等问题。通过定义流体域,可利用离散元软件PFC模拟地下水的渗流,分析岩体工程地应力场-渗流场耦合作用下的流体-固体耦合渗流演化与岩体破坏行为,并从宏观和微观角度对耦合作用下的岩体失稳机制进行研究。高应力场-低渗流场的耦合仿真研究结果表明,渗流场可能诱导非均质或含缺陷岩体薄弱区域产生裂纹,尖端裂纹的产生可导致岩体破坏,但耦合作用下岩体的破坏演化和破坏模式与其在单独应力场中的情况存在差异。对于预设的裂纹,渗流水压会抑制裂纹尖端拉裂纹的发展,预设裂纹尖端破坏区域主要为压坏区域。在低水压渗流场下,若水压不足,破坏区域则停止扩张;若破坏区域的渗流场已达到稳定状态,破坏将会停止。由于渗流场的分布是非均匀的,裂纹更可能在较高渗流水压区域出现。

, authors=潘建国1, 谭力海2, 盛佳3, 彭怀德2, authorsList=潘建国, 谭力海, 盛佳, 彭怀德, authorCompany=null, correspAuthors=谭力海, authorNote=

潘建国(1988—),男,甘肃庆阳人,学士,工程师,主要从事工程管理工作。

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谭力海(1988—),男,湖南衡阳人,博士,讲师,主要从事岩石力学研究。
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潘建国(1988—),男,甘肃庆阳人,学士,工程师,主要从事工程管理工作。

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不同岩层倾角下岩体内部地下水渗流特征数值研究
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潘建国 1 , 谭力海 2 , 盛佳 3 , 彭怀德 2
铀矿冶 | 开采·选冶 2025,44(4): 27-41
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铀矿冶 |开采·选冶 2025 , 44 (4) : 27 -41
不同岩层倾角下岩体内部地下水渗流特征数值研究
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潘建国1, 谭力海2, 盛佳3, 彭怀德2
作者信息
  • 1.中核地质勘查集团有限公司,北京 100013
  • 2.南华大学资源环境与安全工程学院,湖南 衡阳 421001
  • 3.长沙矿山研究院有限责任公司金属矿山安全技术国家重点实验室,湖南 长沙 410012
通讯作者:
谭力海(1988—),男,湖南衡阳人,博士,讲师,主要从事岩石力学研究。
作者简介:

潘建国(1988—),男,甘肃庆阳人,学士,工程师,主要从事工程管理工作。

Numerical Study on Groundwater Seepage Characteristics in Strata with Varying Dip Angles
Jianguo PAN1, Lihai TAN2, Jia SHENG3, Huaide PENG2
Affiliations
  • 1.CNNC Geological Exploration Group Co., Ltd., Beijing 100013, China
  • 2.School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China
  • 3.National Engineering Research Center for Metal Mining, Changsha Institute of Mining Research Co., Ltd., Changsha 410012, China
出版时间: 2025-11-20 doi: 10.13426/j.cnki.yky.2025.01.02
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在不同岩层倾角下岩体内部地下水渗流特征的数值研究中,较少考虑渗流场对内部孔洞、节理等缺陷的影响,渗流场对岩体稳定性的影响,以及渗流场-地应力场耦合下岩体失稳机制等问题。通过定义流体域,可利用离散元软件PFC模拟地下水的渗流,分析岩体工程地应力场-渗流场耦合作用下的流体-固体耦合渗流演化与岩体破坏行为,并从宏观和微观角度对耦合作用下的岩体失稳机制进行研究。高应力场-低渗流场的耦合仿真研究结果表明,渗流场可能诱导非均质或含缺陷岩体薄弱区域产生裂纹,尖端裂纹的产生可导致岩体破坏,但耦合作用下岩体的破坏演化和破坏模式与其在单独应力场中的情况存在差异。对于预设的裂纹,渗流水压会抑制裂纹尖端拉裂纹的发展,预设裂纹尖端破坏区域主要为压坏区域。在低水压渗流场下,若水压不足,破坏区域则停止扩张;若破坏区域的渗流场已达到稳定状态,破坏将会停止。由于渗流场的分布是非均匀的,裂纹更可能在较高渗流水压区域出现。

流体域  /  岩体破坏  /  应力场-渗流场耦合  /  岩层倾角  /  离散元软件  /  岩体失稳  /  仿真研究

In the numerical study of groundwater seep characteristics in rock mass under different rock dip angles, the influence of seep field on internal defects such as holes and joints, the influence of seep field on rock mass stability, and the instability mechanism of rock mass under the coupling of seep field and ground stress field were seldom considered. This study employed discrete element software (PFC) to define fluid domains, simulating fluid-solid coupling evolution and rock mass failure behavior under coupled geostress and seepage fields. Macroscopic and microscopic analyses were conducted to investigate instability mechanisms. The results indicate that the coupling of high-stress fields and low-seepage fields can induce crack propagation in weak zones, such as crack tips, leading to rock mass failure. Compared to stress fields alone, coupling effects exhibit distinct failure patterns. Additionally, under low water pressure, seepage pressure can suppress tensile crack propagation at crack tips, primarily resulting in compressive failure zones. This research provides theoretical insights for understanding seepage behavior and assessing rock mass stability in complex engineering conditions.

fluid domain  /  rock mass failure  /  stress-seepage coupling  /  dip angle of rock strata  /  discrete element software  /  rock mass instability  /  simulation research
潘建国, 谭力海, 盛佳, 彭怀德. 不同岩层倾角下岩体内部地下水渗流特征数值研究. 铀矿冶, 2025 , 44 (4) : 27 -41 . DOI: 10.13426/j.cnki.yky.2025.01.02
Jianguo PAN, Lihai TAN, Jia SHENG, Huaide PENG. Numerical Study on Groundwater Seepage Characteristics in Strata with Varying Dip Angles[J]. Uranium Mining and Metallurgy, 2025 , 44 (4) : 27 -41 . DOI: 10.13426/j.cnki.yky.2025.01.02
  • 湖南省教育厅优秀青年项目(23B0442)
  • 湖南省自然科学基金青年基金项目(2024JJ6386)
  • 金属矿山安全技术国家重点实验室(长沙矿山研究院有限责任公司)开放基金(kfkt2023-03)
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2025年第44卷第4期
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doi: 10.13426/j.cnki.yky.2025.01.02
  • 接收时间:2025-01-07
  • 首发时间:2026-09-28
  • 出版时间:2025-11-20
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  • 收稿日期:2025-01-07
基金
湖南省教育厅优秀青年项目(23B0442)
湖南省自然科学基金青年基金项目(2024JJ6386)
金属矿山安全技术国家重点实验室(长沙矿山研究院有限责任公司)开放基金(kfkt2023-03)
作者信息
    1.中核地质勘查集团有限公司,北京 100013
    2.南华大学资源环境与安全工程学院,湖南 衡阳 421001
    3.长沙矿山研究院有限责任公司金属矿山安全技术国家重点实验室,湖南 长沙 410012

通讯作者:

谭力海(1988—),男,湖南衡阳人,博士,讲师,主要从事岩石力学研究。
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https://castjournals.cast.org.cn/joweb/yky/CN/10.13426/j.cnki.yky.2025.01.02
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2种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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