Uniaxial compression creep and acoustic emission characteristics of sandstone under loading-unloading paths

被引：8

作者：

Zhao, Kui ^{[1
]}

Xiong, Liangxiao ^{[2
,3
]}

Xu, Yangdong ^{[1
]}

Xu, Zhongyuan ^{[4
]}

Zeng, Peng ^{[1
]}

机构：

[1] Jiangxi Univ Sci & Technol, Sch Resources & Environm Engn, Ganzhou 341000, Jiangxi, Peoples R China

[2] East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Jiangxi, Peoples R China

[3] Guangxi Univ, Guangxi Key Lab Disaster Prevent & Engn Safety, Nanning 530004, Peoples R China

[4] Univ Delaware, Dept Earth Sci, Newark, DE 19716 USA

来源：

ARABIAN JOURNAL OF GEOSCIENCES | 2020年 / 13卷 / 23期

基金：

中国国家自然科学基金;

关键词：

Red sandstone; Uniaxial compression-creep test; Multi-level loading-unloading; Acoustic emission characteristics; Damage variable;

D O I：

10.1007/s12517-020-06240-7

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Specimens of red sandstone are subjected to creep and acoustic emission (AE) tests under only multi-level loading and multi-level loading-unloading. Creep deformation characteristics and AE parameters of the red sandstone specimens under these two loading paths are compared and analyzed, and a creep AE damage-variable model is used for the damage evolution of the micro-cracked structures inside the rock during the creep process. The research results reveal the following: (1) During the creep process involving multi-level loading-unloading, the temporal variation of the AE amplitude is similar to that observed during the creep process involving only multi-level loading. (2) The variations of the cumulative AE event and cumulative AE ring-down count in the creep process involving multi-level loading-unloading are similar to those in the creep process involving only multi-level loading, while the actual values are higher in the former process. (3) The creep AE damage-variable model performs well on characterizing the damage evolution of the internal micro-crack structure of the rock in both creep processes.

引用

页数：11

共 18 条

[1]

Chen ZH., 1997, CHIN J NONFERROUS ME, V7, P9

[2] Cyclic loading-unloading creep behavior of composite layered specimens [J].

Hu, Bo ;

Yang, Sheng-Qi ;

Xu, Peng ;

Cheng, Jian-Long .

ACTA GEOPHYSICA, 2019, 67 (02) :449-464

[3] Experimental Study on the Dilatancy and Fracturing Behavior of Soft Rock Under Unloading Conditions [J].

Huang, Xing ;

Liu, Quansheng ;

Liu, Bin ;

Liu, Xuewei ;

Pan, Yucong ;

Liu, Jianping .

INTERNATIONAL JOURNAL OF CIVIL ENGINEERING, 2017, 15 (6A) :921-948

[4] A Comparative Evaluation of Stress-Strain and Acoustic Emission Methods for Quantitative Damage Assessments of Brittle Rock [J].

Kim, Jin-Seop ;

Lee, Kyung-Soo ;

Cho, Won-Jin ;

Choi, Heui-Joo ;

Cho, Gye-Chun .

ROCK MECHANICS AND ROCK ENGINEERING, 2015, 48 (02) :495-508

[5] Dynamic mechanical characteristics and fracture mechanism of gas-bearing coal based on SHPB experiments [J].

Kong, Xiangguo ;

Wang, Enyuan ;

Li, Shugang ;

Lin, Haifei ;

Zhang, Zhibo ;

Ju, Yunqiang .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 2020, 105

[6] Acoustic Emission Characteristics of Red Sandstone Specimens Under Uniaxial Cyclic Loading and Unloading Compression [J].

Meng, Qingbin ;

Zhang, Mingwei ;

Han, Lijun ;

Pu, Hai ;

Chen, Yanlong .

ROCK MECHANICS AND ROCK ENGINEERING, 2018, 51 (04) :969-988

[7] Effects of Acoustic Emission and Energy Evolution of Rock Specimens Under the Uniaxial Cyclic Loading and Unloading Compression [J].

Meng, Qingbin ;

Zhang, Mingwei ;

Han, Lijun ;

Pu, Hai ;

Nie, Taoyi .

ROCK MECHANICS AND ROCK ENGINEERING, 2016, 49 (10) :3873-3886

[8]

Tang C., 1990, J SEISMOL RES, V13, P203

[9] Acoustic emission characteristics and energy mechanism in karst limestone failure under uniaxial and triaxial compression [J].

Wang, Qingsong ;

Chen, Jianxun ;

Guo, Jiaqi ;

Luo, Yanbin ;

Wang, Hongyu ;

Liu, Qin .

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2019, 78 (03) :1427-1442

[10]

WEIBULL W, 1951, J APPL MECH-T ASME, V18, P293

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