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To reveal the damage and degradation mechanisms of mudstone in tailings reservoir slopes under complex environmental conditions, dynamic uniaxial compression tests, CT scanning, and scanning electron microscopy(SEM)were conducted to analyze the evolution of dynamic uniaxial compressive strength and structural damage mechanisms of mudstone under three typical environmental conditions, i.e., wet-dry cycles, freeze-thaw cycles, as well as wet-dry and freeze-thaw cycles. The results show that the dynamic compressive strength and dynamic elastic modulus of strongly weathered mudstone continuously decay with the increase of cycle number, and the deterioration rate gradually stabilizes after 80 cycles. Among those three environmental damage conditions, the coupling effect of wet-dry and freeze-thaw cycles brings the most significant deterioration to mudstone. After 100 wet-dry and freeze-thaw cycles, the dynamic compressive strength and dynamic elastic modulus of mudstone decrease, and the connectivity of pore networks increases remarkably, presenting a strong linear relationship (negative correlation) between porosity and dynamic compressive strength. Complex environments can reduce the effective bearing area and stress transfer efficiency of rock mass by accelerating pore expansion and crack propagation, thus eventually lead to structural damage and strength deterioration of mudstone. Relevant suggestions for slope reinforcement engineering of tailings reservoirs are finally put forward based on the research results.

, authors=Ping LIU1, Junfeng ZHANG2, authorsList=Ping LIU, Junfeng ZHANG, authorCompany=null, correspAuthors=null, 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=1314908084250697950, articleId=1314908083701244124, tenantId=1146029695717560320, journalId=1235980550691926019, language=CN, title=尾矿库边坡泥岩的动态力学响应及微观结构演化研究, columnId=1236276106219811026, journalTitle=矿冶工程杂志, columnName=采矿, runingTitle=null, highlight=null, articleAbstract=

为揭示尾矿库边坡泥岩在复杂环境作用下的损伤劣化机制,开展了动态单轴压缩试验、CT扫描及扫描电镜等试验,分析了干湿循环、冻融循环及干湿-冻融循环3种典型环境条件下泥岩的动态抗压强度演化与结构损伤机制。结果表明,强风化泥岩的动态抗压强度与动弹性模量随循环次数增加呈持续衰减特征,且劣化速率在80次循环后逐渐趋于稳定;在3种环境损伤效应中,干湿-冻融循环对泥岩的劣化影响最显著,经过100次干湿-冻融循环后,泥岩的动态抗压强度和动弹性模量均下降,孔隙网络连通度显著增加,孔隙率与动态抗压强度呈强负线性相关关系。复杂环境通过加速孔隙膨胀与裂隙扩张,降低了岩体的有效承载面积与应力传递效率,最终引发泥岩的结构损伤与强度劣化。根据研究结果,对尾矿库边坡加固工程提出了相关建议。

, authors=刘萍1, 张军锋2, authorsList=刘萍, 张军锋, authorCompany=null, correspAuthors=null, authorNote=

刘萍(1982—),女,河南滑县人,硕士,讲师,主要从事岩土结构工程的教学与科研工作。E-mail:

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尾矿库边坡泥岩的动态力学响应及微观结构演化研究
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刘萍 1 , 张军锋 2
矿冶工程杂志 | 采矿 2026,46(4): 54-59
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矿冶工程杂志 |采矿 2026 , 46 (4) : 54 -59
尾矿库边坡泥岩的动态力学响应及微观结构演化研究
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刘萍(1982—),女,河南滑县人,硕士,讲师,主要从事岩土结构工程的教学与科研工作。E-mail:

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刘萍1 , 张军锋2
作者信息
  • 1.河南建筑职业技术学院 智能制造学院,河南 郑州 450000
  • 2.郑州大学 土木工程学院,河南 郑州 450000
作者简介:

刘萍(1982—),女,河南滑县人,硕士,讲师,主要从事岩土结构工程的教学与科研工作。E-mail:

Dynamic Mechanical Response and Microstructure Evolution of Mudstone in Tailings Reservoir Slope
Ping LIU1 , Junfeng ZHANG2
Affiliations
  • 1.School of Intelligent Construction, Henan Technical College of Construction, Zhengzhou, 450000, Henan, China
  • 2.School of Civil Engineering, Zhengzhou University, Zhengzhou 450000, Henan, China
doi: 10.3969/j.issn.0253-6099.2026.04.007
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为揭示尾矿库边坡泥岩在复杂环境作用下的损伤劣化机制,开展了动态单轴压缩试验、CT扫描及扫描电镜等试验,分析了干湿循环、冻融循环及干湿-冻融循环3种典型环境条件下泥岩的动态抗压强度演化与结构损伤机制。结果表明,强风化泥岩的动态抗压强度与动弹性模量随循环次数增加呈持续衰减特征,且劣化速率在80次循环后逐渐趋于稳定;在3种环境损伤效应中,干湿-冻融循环对泥岩的劣化影响最显著,经过100次干湿-冻融循环后,泥岩的动态抗压强度和动弹性模量均下降,孔隙网络连通度显著增加,孔隙率与动态抗压强度呈强负线性相关关系。复杂环境通过加速孔隙膨胀与裂隙扩张,降低了岩体的有效承载面积与应力传递效率,最终引发泥岩的结构损伤与强度劣化。根据研究结果,对尾矿库边坡加固工程提出了相关建议。

岩石力学  /  泥岩  /  尾矿库  /  边坡  /  干湿循环  /  冻融循环  /  动态力学  /  微观结构

To reveal the damage and degradation mechanisms of mudstone in tailings reservoir slopes under complex environmental conditions, dynamic uniaxial compression tests, CT scanning, and scanning electron microscopy(SEM)were conducted to analyze the evolution of dynamic uniaxial compressive strength and structural damage mechanisms of mudstone under three typical environmental conditions, i.e., wet-dry cycles, freeze-thaw cycles, as well as wet-dry and freeze-thaw cycles. The results show that the dynamic compressive strength and dynamic elastic modulus of strongly weathered mudstone continuously decay with the increase of cycle number, and the deterioration rate gradually stabilizes after 80 cycles. Among those three environmental damage conditions, the coupling effect of wet-dry and freeze-thaw cycles brings the most significant deterioration to mudstone. After 100 wet-dry and freeze-thaw cycles, the dynamic compressive strength and dynamic elastic modulus of mudstone decrease, and the connectivity of pore networks increases remarkably, presenting a strong linear relationship (negative correlation) between porosity and dynamic compressive strength. Complex environments can reduce the effective bearing area and stress transfer efficiency of rock mass by accelerating pore expansion and crack propagation, thus eventually lead to structural damage and strength deterioration of mudstone. Relevant suggestions for slope reinforcement engineering of tailings reservoirs are finally put forward based on the research results.

rock mechanics  /  mudstone  /  tailings reservoir  /  slope  /  wet-dry cycle  /  freeze-thaw cycle  /  dynamic mechanics  /  microstructure
刘萍, 张军锋. 尾矿库边坡泥岩的动态力学响应及微观结构演化研究. 矿冶工程杂志, 2026 , 46 (4) : 54 -59 . DOI: 10.3969/j.issn.0253-6099.2026.04.007
Ping LIU, Junfeng ZHANG. Dynamic Mechanical Response and Microstructure Evolution of Mudstone in Tailings Reservoir Slope[J]. Mining and Metallurgical Engineering, 2026 , 46 (4) : 54 -59 . DOI: 10.3969/j.issn.0253-6099.2026.04.007
  • 国家自然科学基金(52218477)
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doi: 10.3969/j.issn.0253-6099.2026.04.007
  • 接收时间:2026-03-12
  • 首发时间:2026-10-08
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  • 收稿日期:2026-03-12
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国家自然科学基金(52218477)
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    1.河南建筑职业技术学院 智能制造学院,河南 郑州 450000
    2.郑州大学 土木工程学院,河南 郑州 450000
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
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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