A Chemical Damage Creep Model of Rock Considering the Influence of Triaxial Stress

被引：19

作者：

Chen, Youliang ^{[1
,2
]}

Chen, Qijian ^{[1
]}

Pan, Yungui ^{[1
]}

Xiao, Peng ^{[3
]}

Du, Xi ^{[1
,4
]}

Wang, Suran ^{[1
]}

Zhang, Ning ^{[1
]}

Wu, Xiaojian ^{[5
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Environm & Architecture, Dept Civil Engn, Shanghai 200093, Peoples R China

[2] Rhein Westfal TH Aachen, Dept Engn Geol & Hydrogeol, D-52064 Aachen, Germany

[3] Southeast Univ, Sch Transportat, Nanjing 210096, Peoples R China

[4] Univ New South Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

[5] Shanghai Construct Engn Grp Engn Res Inst, Shanghai 200093, Peoples R China

来源：

MATERIALS | 2022年 / 15卷 / 21期

基金：

中国国家自然科学基金;

关键词：

chemical corrosion; true triaxial stress; nonlinearity; rock creep constitutive; intermediate principal stress; TIME-DEPENDENT BEHAVIOR; HARD-ROCK; JINPING MARBLE; SANDSTONE; MECHANISM;

D O I：

10.3390/ma15217590

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In order to accurately describe the characteristics of each stage of rock creep behavior under the combined action of acid environment and true triaxial stress, based on damage mechanics, chemical damage is connected with elastic modulus; thus, the damage relations considering creep stress damage and chemical damage are obtained. The elastic body, nonlinear Kelvin body, linear Kelvin body, and viscoelastic-plastic body (Mogi-Coulomb) are connected in series, and the actual situation under the action of true triaxial stress is considered at the same time. Therefore, a damage creep constitutive model considering the coupling of rock acid corrosion and true triaxial stress is established. The parameters of the deduced model are identified and verified with the existing experimental research results. The yield surface equation of rock under true triaxial stress is obtained by data fitting, and the influence of intermediate principal stress on the creep model is discussed. The derived constitutive model can accurately describe the characteristics of each stage of true triaxial creep behavior of rock under acid environment.

引用

页数：13

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