Article(id=1223210590080979081, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223210584024400210, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20221620, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1659715200000, receivedDateStr=2022-08-06, revisedDate=1661529600000, revisedDateStr=2022-08-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1769565730829, onlineDateStr=2026-01-28, pubDate=1687622400000, pubDateStr=2023-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769565730829, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769565730829, creator=13701087609, updateTime=1769565730829, updator=13701087609, issue=Issue{id=1223210584024400210, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='6', 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=1769565729385, creator=13701087609, updateTime=1769593153259, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223325608164348105, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223210584024400210, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223325608164348106, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223210584024400210, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=114, endPage=118, ext={EN=ArticleExt(id=1223210590517186747, articleId=1223210590080979081, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Study on Energy Evolution of Hard Rock Under High Confining Pressure and Unloading Condition, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

In order to explore the energy evolution law of rock failure process in the excavation process of diversion tunnel, this paper selects magnetite ore and carries out conventional triaxial and triaxial pre-peak constant axial pressure unloading confining pressure tests. The results show that in the conventional triaxial test, the rock is dominated by elastic strain energy storage and dissipative strain energy consumption before the peak stress, and the elastic strain energy release and dissipative strain energy consumption after the peak stress. With the increase of confining pressure, pre-peak shear fracture energy is higher than post-peak shear fracture energy. In the unloading confining pressure test, the dissipated strain energy increases exponentially. The faster the unloading rate, the shorter the unloading period is, and the higher the rate of energy increment per unit time between the unloading point and the drop point. Based on the M-C criterion of rockburst dynamics, the loss of rock cohesion and the dissipated strain energy of rock under unloading path, the damage variable in the process of rock unloading is defined, and the damage degree of rock deformation and failure is revealed from the perspective of energy.

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为探究引水隧洞在开挖过程中岩石破坏过程的能量演化规律,选取磁铁矿石开展了常规三轴及三轴峰前恒轴压卸围压试验。结果表明,在常规三轴试验中,岩石在峰值应力前以弹性应变能存储和耗散应变能消耗为主,在峰值应力后以弹性应变能释放和耗散应变能消耗为主;随着围压的增加,峰前剪切断裂能高于峰后;在卸围压试验中,耗散应变能均以指数函数趋势增加,卸荷速率越快,卸荷段经历时间较短,卸荷点与跌落点之间的耗散能在单位时间内能量增量变化速率越高;基于岩爆动力学M-C准则及卸荷路径下岩石内聚力丧失与岩石耗散应变能,新定义了岩石卸荷过程中的损伤变量,从能量角度揭示了岩石变形破坏的损伤程度。

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宿辉(1972-),男,教授,研究方向为地下洞室稳定分析,E-mail:
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胡宝文(1986-),男,副教授,研究方向为岩土结构工程,E-mail:

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高应力卸荷条件下硬岩能量演化研究
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胡宝文 1, 2, 3 , 吕聪瑞 1 , 宿辉 1 , 南博文 1 , 宋金科 1 , 李江哲 1
水电能源科学 | 水利水电工程 2023,41(6): 114-118
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水电能源科学 | 水利水电工程 2023, 41(6): 114-118
高应力卸荷条件下硬岩能量演化研究
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胡宝文1, 2, 3 , 吕聪瑞1, 宿辉1 , 南博文1, 宋金科1, 李江哲1
作者信息
  • 1.河北工程大学水利水电学院,河北 邯郸 056038
  • 2.城市地下空间工程北京市重点实验室,北京 100083
  • 3.河北省智慧水利重点实验室,河北 邯郸 056038
  • 胡宝文(1986-),男,副教授,研究方向为岩土结构工程,E-mail:

通讯作者:

宿辉(1972-),男,教授,研究方向为地下洞室稳定分析,E-mail:
Study on Energy Evolution of Hard Rock Under High Confining Pressure and Unloading Condition
Bao-wen HU1, 2, 3 , Cong-rui LV1, Hui SU1 , Bo-wen NAN1, Jin-ke SONG1, Jiang-zhe LI1
Affiliations
  • 1.School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China
  • 2.Beijing Key Laboratory of Urban Underground Space Engineering, Beijing 100083, China
  • 3.Hebei Key Laboratory of Intelligent Water Conservancy, Handan 056038, China
出版时间: 2023-06-25 doi: 10.20040/j.cnki.1000-7709.2023.20221620
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为探究引水隧洞在开挖过程中岩石破坏过程的能量演化规律,选取磁铁矿石开展了常规三轴及三轴峰前恒轴压卸围压试验。结果表明,在常规三轴试验中,岩石在峰值应力前以弹性应变能存储和耗散应变能消耗为主,在峰值应力后以弹性应变能释放和耗散应变能消耗为主;随着围压的增加,峰前剪切断裂能高于峰后;在卸围压试验中,耗散应变能均以指数函数趋势增加,卸荷速率越快,卸荷段经历时间较短,卸荷点与跌落点之间的耗散能在单位时间内能量增量变化速率越高;基于岩爆动力学M-C准则及卸荷路径下岩石内聚力丧失与岩石耗散应变能,新定义了岩石卸荷过程中的损伤变量,从能量角度揭示了岩石变形破坏的损伤程度。

能量演化  /  剪切断裂能  /  能量变化速率  /  损伤变量

In order to explore the energy evolution law of rock failure process in the excavation process of diversion tunnel, this paper selects magnetite ore and carries out conventional triaxial and triaxial pre-peak constant axial pressure unloading confining pressure tests. The results show that in the conventional triaxial test, the rock is dominated by elastic strain energy storage and dissipative strain energy consumption before the peak stress, and the elastic strain energy release and dissipative strain energy consumption after the peak stress. With the increase of confining pressure, pre-peak shear fracture energy is higher than post-peak shear fracture energy. In the unloading confining pressure test, the dissipated strain energy increases exponentially. The faster the unloading rate, the shorter the unloading period is, and the higher the rate of energy increment per unit time between the unloading point and the drop point. Based on the M-C criterion of rockburst dynamics, the loss of rock cohesion and the dissipated strain energy of rock under unloading path, the damage variable in the process of rock unloading is defined, and the damage degree of rock deformation and failure is revealed from the perspective of energy.

energy evolution  /  shear fracture energy  /  energy change rate  /  damage variable
胡宝文, 吕聪瑞, 宿辉, 南博文, 宋金科, 李江哲. 高应力卸荷条件下硬岩能量演化研究. 水电能源科学, 2023 , 41 (6) : 114 -118 . DOI: 10.20040/j.cnki.1000-7709.2023.20221620
Bao-wen HU, Cong-rui LV, Hui SU, Bo-wen NAN, Jin-ke SONG, Jiang-zhe LI. Study on Energy Evolution of Hard Rock Under High Confining Pressure and Unloading Condition[J]. Water Resources and Power, 2023 , 41 (6) : 114 -118 . DOI: 10.20040/j.cnki.1000-7709.2023.20221620
  • 河北省自然科学基金项目(E2019402256)
  • 河北省自然科学基金项目基础研究专项(E2020402087)
2023年第41卷第6期
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文章信息
doi: 10.20040/j.cnki.1000-7709.2023.20221620
  • 接收时间:2022-08-06
  • 首发时间:2026-01-28
  • 出版时间:2023-06-25
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出版历史
  • 收稿日期:2022-08-06
  • 修回日期:2022-08-27
基金
河北省自然科学基金项目(E2019402256)
河北省自然科学基金项目基础研究专项(E2020402087)
作者信息
    1.河北工程大学水利水电学院,河北 邯郸 056038
    2.城市地下空间工程北京市重点实验室,北京 100083
    3.河北省智慧水利重点实验室,河北 邯郸 056038

通讯作者:

宿辉(1972-),男,教授,研究方向为地下洞室稳定分析,E-mail:
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https://castjournals.cast.org.cn/joweb/sdnykx/CN/10.20040/j.cnki.1000-7709.2023.20221620
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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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