Article(id=1222963549077491756, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1222963536863678929, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20220195, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1643817600000, receivedDateStr=2022-02-03, revisedDate=1656000000000, revisedDateStr=2022-06-24, acceptedDate=null, acceptedDateStr=null, onlineDate=1769506831664, onlineDateStr=2026-01-27, pubDate=1682352000000, pubDateStr=2023-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769506831664, onlineIssueDateStr=2026-01-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769506831664, creator=13701087609, updateTime=1769506831664, updator=13701087609, issue=Issue{id=1222963536863678929, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='4', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769506828752, creator=13701087609, updateTime=1769508076664, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1222968771057279321, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1222963536863678929, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1222968771057279322, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1222963536863678929, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=181, endPage=185, ext={EN=ArticleExt(id=1222963550319005758, articleId=1222963549077491756, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Experimental and Numerical Simulation Study on Mechanical Properties of Sandstone with Prefabricated Intermittent Fissures, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

In order to study the mechanical properties of rocks with prefabricated fissures, rock specimens with intermittent fissures at different angles were prepared. Uniaxial compression test was carried out on the specimens with fissures using uniaxial compression test equipment. It is found that the uniaxial compressive strength of 40° intermittent fissures is the largest, followed by that of 60°and 20°. The PFC2D was used to simulate the test process. The change law of microcrack and stress in the test process was analyzed. It is found that the strength of rock bridge has an important impact on the uniaxial compressive strength of the specimen. Through comparison, the change law of stress-strain curve of numerical simulation is basically consistent with that of physical test.

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为了研究含预制裂隙岩石的力学特性,制备不同角度的断续裂隙类岩石试件,对含裂隙岩石试件进行单轴试验,发现倾角40°断续裂隙的单轴抗压强度最大,60°次之,20°最小。使用PFC2D对试验过程进行模拟,并分析试验过程中微裂纹与应力的变化规律,发现岩桥强度对试件单轴抗压强度具有重要影响,通过对比发现数值模拟的应力-应变曲线的变化规律与物理试验结果基本一致。

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刘树新(1971-),男,博士、教授,研究方向为岩石力学、采矿工艺等,E-mail:

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刘树新(1971-),男,博士、教授,研究方向为岩石力学、采矿工艺等,E-mail:

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刘树新(1971-),男,博士、教授,研究方向为岩石力学、采矿工艺等,E-mail:

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含预制断续裂隙类岩石材料力学特性试验及数值模拟研究
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刘树新 , 郑旭 , 丁凯 , 张东杰
水电能源科学 | 水利水电工程 2023,41(4): 181-185
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水电能源科学 | 水利水电工程 2023, 41(4): 181-185
含预制断续裂隙类岩石材料力学特性试验及数值模拟研究
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刘树新 , 郑旭, 丁凯, 张东杰
作者信息
  • 内蒙古科技大学矿业与煤炭学院,内蒙古 包头 014010
  • 刘树新(1971-),男,博士、教授,研究方向为岩石力学、采矿工艺等,E-mail:

Experimental and Numerical Simulation Study on Mechanical Properties of Sandstone with Prefabricated Intermittent Fissures
Shu-xin LIU , Xu ZHENG, Kai DING, Dong-jie ZHANG
Affiliations
  • Institute of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014010, China
出版时间: 2023-04-25 doi: 10.20040/j.cnki.1000-7709.2023.20220195
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为了研究含预制裂隙岩石的力学特性,制备不同角度的断续裂隙类岩石试件,对含裂隙岩石试件进行单轴试验,发现倾角40°断续裂隙的单轴抗压强度最大,60°次之,20°最小。使用PFC2D对试验过程进行模拟,并分析试验过程中微裂纹与应力的变化规律,发现岩桥强度对试件单轴抗压强度具有重要影响,通过对比发现数值模拟的应力-应变曲线的变化规律与物理试验结果基本一致。

预制裂隙  /  单轴压缩  /  PFC2D  /  数值计算

In order to study the mechanical properties of rocks with prefabricated fissures, rock specimens with intermittent fissures at different angles were prepared. Uniaxial compression test was carried out on the specimens with fissures using uniaxial compression test equipment. It is found that the uniaxial compressive strength of 40° intermittent fissures is the largest, followed by that of 60°and 20°. The PFC2D was used to simulate the test process. The change law of microcrack and stress in the test process was analyzed. It is found that the strength of rock bridge has an important impact on the uniaxial compressive strength of the specimen. Through comparison, the change law of stress-strain curve of numerical simulation is basically consistent with that of physical test.

prefabricated fissures  /  uniaxial compression  /  PFC2D  /  numerical calculation
刘树新, 郑旭, 丁凯, 张东杰. 含预制断续裂隙类岩石材料力学特性试验及数值模拟研究. 水电能源科学, 2023 , 41 (4) : 181 -185 . DOI: 10.20040/j.cnki.1000-7709.2023.20220195
Shu-xin LIU, Xu ZHENG, Kai DING, Dong-jie ZHANG. Experimental and Numerical Simulation Study on Mechanical Properties of Sandstone with Prefabricated Intermittent Fissures[J]. Water Resources and Power, 2023 , 41 (4) : 181 -185 . DOI: 10.20040/j.cnki.1000-7709.2023.20220195
  • 国家自然科学基金项目(51264028)
  • 内蒙古自治区自然科学基金项目(2021LHMS05017)
  • 内蒙古自治区高等学校科学研究项目(NJZY11147)
2023年第41卷第4期
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doi: 10.20040/j.cnki.1000-7709.2023.20220195
  • 接收时间:2022-02-03
  • 首发时间:2026-01-27
  • 出版时间:2023-04-25
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  • 收稿日期:2022-02-03
  • 修回日期:2022-06-24
基金
国家自然科学基金项目(51264028)
内蒙古自治区自然科学基金项目(2021LHMS05017)
内蒙古自治区高等学校科学研究项目(NJZY11147)
作者信息
    内蒙古科技大学矿业与煤炭学院,内蒙古 包头 014010
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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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