Article(id=1273953295933661896, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, articleNumber=null, orderNo=null, doi=10.20174/j.JUSE.2026.02.17, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1749484800000, receivedDateStr=2025-06-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1781663734657, onlineDateStr=2026-06-17, pubDate=1776614400000, pubDateStr=2026-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1781663734657, onlineIssueDateStr=2026-06-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1781663734657, creator=13701087609, updateTime=1781663734657, updator=13701087609, issue=Issue{id=1273953231114887613, tenantId=1146029695717560320, journalId=1272209045839646724, year='2026', volume='22', issue='2', pageStart='377', pageEnd='752', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1781663719203, creator=13701087609, updateTime=1781663760928, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1273953406235467954, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1273953406235467955, tenantId=1146029695717560320, journalId=1272209045839646724, issueId=1273953231114887613, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=556, endPage=564, ext={EN=ArticleExt(id=1273953296181125834, articleId=1273953295933661896, tenantId=1146029695717560320, journalId=1272209045839646724, language=EN, title=Experimental Study on the Evolution of Loess Strength under Salt Pollution-Dry and Wet Coupling, columnId=null, journalTitle=Chinese Journal of Underground Space and Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=

The soil in the northwest loess irrigation area has been affected by the dual effects of dry-wet cycling and salt pollution, leading to significant deterioration of the loess properties in this region. Taking Q3 loess contaminated by Na2SO4 as the research object, direct shear tests and scanning electron microscopy (SEM) are used to analyse the changes in mechanical properties and microstructure characteristics after different numbers of dry-wet cycles. The results show that: Under the dual effects of dry-wet cycling and salt pollution, the strength of the loess deteriorates significantly, and the microstructure changes significantly. Among them, the cohesion shows obvious deterioration, with a decline rate of up to 38.24% to 51.4%. With the increase of salt pollution and dry-wet cycling times, the proportion of individual particles in the loess body increases significantly, and the aggregates begin to disintegrate; Na2SO4 repeatedly crystallizes and dissolves during dry-wet cycling, thereby exerting a combined effect of salt swelling and salt erosion on the soil; among the two effects, the destructive effect of dry-wet cycling on the soil structure is greater than that of salt pollution. The research results provide an effective reference for engineering activities and pollution control in loess areas.

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西北黄土灌溉地区土壤经历了干湿循环作用和盐污染双重作用的影响,导致该地区黄土特性产生明显的劣化。以Na2SO4污染Q3黄土为研究对象,采用直剪试验、电子显微镜扫描试验(SEM),分析其经过次数不同干湿循环作用后的力学性质和微观结构特征变化。结果表明:干湿循环和盐污染双重作用下,黄土强度劣化程度增大,微观结构变化显著;期中,黏聚力产生明显劣化,下降率可达38.24% ~ 51.4%;随盐污染和干湿循环次数的增加,黄土体的单体颗粒比例显著增加,团聚体开始解体;Na2SO4随着干湿循环反复结晶和溶解,从而对土体产生了盐胀与盐蚀共同作用;二者作用中,干湿循环对土体结构的破坏作用大于盐污染作用。研究结果可为黄土地区的工程活动和防污治理提供有效参考。

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王述红(1969—),男,江苏泰州人,博士,教授、博士生导师,岩土工程、地下工程等领域的教学与科研工作。E-mail:
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马世雄(1987—),男,宁夏固原人,博士生,讲师,主要从事黄土特性、滑坡灾害等方面的研究工作。E-mail:

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马世雄(1987—),男,宁夏固原人,博士生,讲师,主要从事黄土特性、滑坡灾害等方面的研究工作。E-mail:

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马世雄(1987—),男,宁夏固原人,博士生,讲师,主要从事黄土特性、滑坡灾害等方面的研究工作。E-mail:

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盐污染-干湿耦合下黄土强度演变的试验研究
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马世雄 1, 2 , 王述红 2 , 赵春瑶 3 , 刘智 1 , 王宇 1
地下空间与工程学报 | 理论与试验研究 2026,22(2): 556-564
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地下空间与工程学报 | 理论与试验研究 2026, 22(2): 556-564
盐污染-干湿耦合下黄土强度演变的试验研究
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马世雄1, 2 , 王述红2 , 赵春瑶3, 刘智1, 王宇1
作者信息
  • 1.宁夏理工学院 建筑与环境学院,石嘴山 753000
  • 2.东北大学 资源与土木工程学院,沈阳 110819
  • 3.宁夏公路勘察设计院有限责任公司,银川 750000
  • 马世雄(1987—),男,宁夏固原人,博士生,讲师,主要从事黄土特性、滑坡灾害等方面的研究工作。E-mail:

通讯作者:

王述红(1969—),男,江苏泰州人,博士,教授、博士生导师,岩土工程、地下工程等领域的教学与科研工作。E-mail:
Experimental Study on the Evolution of Loess Strength under Salt Pollution-Dry and Wet Coupling
Shixiong Ma1, 2 , Shuhong Wang2 , Chunyao Zhao3, Zhi Liu1, Yu Wang1
Affiliations
  • 1.School of Architecture and Environment, Ningxia Institute of Science and Technology, Shizuishan, Ningxia 753000, P. R. China
  • 2.College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, P. R. China
  • 3.Ningxia Highway Survey and Design Institute Limited Liability Company, Yinchuan, Ningxia 750000, P. R. China
出版时间: 2026-04-20 doi: 10.20174/j.JUSE.2026.02.17
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西北黄土灌溉地区土壤经历了干湿循环作用和盐污染双重作用的影响,导致该地区黄土特性产生明显的劣化。以Na2SO4污染Q3黄土为研究对象,采用直剪试验、电子显微镜扫描试验(SEM),分析其经过次数不同干湿循环作用后的力学性质和微观结构特征变化。结果表明:干湿循环和盐污染双重作用下,黄土强度劣化程度增大,微观结构变化显著;期中,黏聚力产生明显劣化,下降率可达38.24% ~ 51.4%;随盐污染和干湿循环次数的增加,黄土体的单体颗粒比例显著增加,团聚体开始解体;Na2SO4随着干湿循环反复结晶和溶解,从而对土体产生了盐胀与盐蚀共同作用;二者作用中,干湿循环对土体结构的破坏作用大于盐污染作用。研究结果可为黄土地区的工程活动和防污治理提供有效参考。

污染黄土  /  干湿循环  /  分形维数  /  概率熵

The soil in the northwest loess irrigation area has been affected by the dual effects of dry-wet cycling and salt pollution, leading to significant deterioration of the loess properties in this region. Taking Q3 loess contaminated by Na2SO4 as the research object, direct shear tests and scanning electron microscopy (SEM) are used to analyse the changes in mechanical properties and microstructure characteristics after different numbers of dry-wet cycles. The results show that: Under the dual effects of dry-wet cycling and salt pollution, the strength of the loess deteriorates significantly, and the microstructure changes significantly. Among them, the cohesion shows obvious deterioration, with a decline rate of up to 38.24% to 51.4%. With the increase of salt pollution and dry-wet cycling times, the proportion of individual particles in the loess body increases significantly, and the aggregates begin to disintegrate; Na2SO4 repeatedly crystallizes and dissolves during dry-wet cycling, thereby exerting a combined effect of salt swelling and salt erosion on the soil; among the two effects, the destructive effect of dry-wet cycling on the soil structure is greater than that of salt pollution. The research results provide an effective reference for engineering activities and pollution control in loess areas.

polluted loess  /  dry and wet cycle  /  fractal dimension  /  probabilistic entropy
马世雄, 王述红, 赵春瑶, 刘智, 王宇. 盐污染-干湿耦合下黄土强度演变的试验研究. 地下空间与工程学报, 2026 , 22 (2) : 556 -564 . DOI: 10.20174/j.JUSE.2026.02.17
Shixiong Ma, Shuhong Wang, Chunyao Zhao, Zhi Liu, Yu Wang. Experimental Study on the Evolution of Loess Strength under Salt Pollution-Dry and Wet Coupling[J]. Chinese Journal of Underground Space and Engineering, 2026 , 22 (2) : 556 -564 . DOI: 10.20174/j.JUSE.2026.02.17
  • 宁夏回族自治区教育厅高等学校科学研究项目(CBSC-PA202403070029)
  • 宁夏自然科学基金(2024AAC03333)
2026年第22卷第2期
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doi: 10.20174/j.JUSE.2026.02.17
  • 接收时间:2025-06-10
  • 首发时间:2026-06-17
  • 出版时间:2026-04-20
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  • 收稿日期:2025-06-10
基金
宁夏回族自治区教育厅高等学校科学研究项目(CBSC-PA202403070029)
宁夏自然科学基金(2024AAC03333)
作者信息
    1.宁夏理工学院 建筑与环境学院,石嘴山 753000
    2.东北大学 资源与土木工程学院,沈阳 110819
    3.宁夏公路勘察设计院有限责任公司,银川 750000

通讯作者:

王述红(1969—),男,江苏泰州人,博士,教授、博士生导师,岩土工程、地下工程等领域的教学与科研工作。E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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