Particle Flow Simulation of Failure Process of Defective Sandstone under Different Intermediate Principal Stress under True Triaxial Action

被引:3
作者
Wang, Ziyi [1 ]
Su, Hengyu [2 ]
Luo, Chang [1 ]
Ma, Shu [3 ]
Ding, Heng [4 ]
机构
[1] Guizhou Univ, Sch Min, Guiyang 550025, Peoples R China
[2] Guizhou Univ Nationalities, Sch Architectural Engn, Guiyang 550025, Peoples R China
[3] China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Jiangsu, Peoples R China
[4] Guizhou Geol Environm Monitoring Inst, Guiyang 550025, Peoples R China
关键词
sandstone; fracture; burst; damage; triaxial test; SOFT ROCK; STRENGTH; BEHAVIOR; MODEL;
D O I
10.3390/pr10102028
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In order to explore the mechanical response characteristics of fractured sandstone under true triaxial different medium principal stresses, matdem particle flow software was used to study the mechanical response characteristics, fracture mechanism and damage evolution characteristics of sandstone specimens under the conditions of 30 MPa, 40 MPa and 50 MPa respectively. The simulation results are verified by true triaxial test. The results show that under true triaxial stress, the increase of medium principal stress is beneficial to increase the strength of sandstone. The fracture degree of the specimen increases with the increase of the intermediate principal stress, and finally the interlacing macroscopic cracks are formed. When the intermediate principal stress is perpendicular to the fracture strike, the fracture mode of sandstone is that the macroscopic fracture plane is perpendicular to the fracture strike, and the fracture mechanism of sandstone under true triaxial compression is mainly shear failure, accompanied by tensile failure. With the increasing of the intermediate principal stress, the fractal dimension of the fracture of sandstone specimen increases significantly and the degree of fracture deepens. Combined with the true triaxial test results, the rationality of particle flow simulation test is proved.
引用
收藏
页数:12
相关论文
共 50 条
[31]   Failure Mechanism of Sandstone Under True Triaxial Cyclic Loading: Insights from Energy Evolution [J].
Hao Fan ;
Zhongxiang Wang ;
Jiang Liu ;
Yu Wang .
Geotechnical and Geological Engineering, 43 (7)
[32]   Particle Flow Simulation of Failure Characteristics of Deep Rock Influenced by Sample Height-to-Width Ratios and Initial Stress Level under True-Triaxial Unloading [J].
Rong, Haoyu ;
Li, Guichen ;
Xu, Jiahui ;
Bi, Ruiyang ;
Sun, Yuantian ;
Hu, Yaqiao ;
Bai, Guoliang .
GEOFLUIDS, 2021, 2021
[33]   Experimental study on the deformation and failure characteristics of cement stone under true triaxial stress state [J].
Liu, Jiacun ;
Jia, Wensong ;
Duan, Hongfei ;
Li, Xing ;
Xia, Kaiwen .
CONSTRUCTION AND BUILDING MATERIALS, 2024, 449
[34]   Numerical simulation of deformation and failure process of sandstone samples under axil compression [J].
Zhang, Hui-Mei ;
Xie, Xiang-Miao ;
Liang, Yuan ;
Yang, Geng-She .
PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON MECHANICS AND MECHATRONICS (ICMM 2015), 2016, :746-752
[35]   Failure process and characteristics of deep concrete-supported arch tunnel under true-triaxial stress [J].
Yu, Lekui ;
Peng, Kang ;
Luo, Song ;
Wang, Yuanmin ;
Luo, Kun .
THEORETICAL AND APPLIED FRACTURE MECHANICS, 2024, 130
[36]   Crack propagation and strength characteristic of sandstone with structural defects under extensive true triaxial tests by using DEM simulation [J].
Feng, Fan ;
Zhang, Tong ;
Rostami, Jamal ;
Chen, Shaojie ;
Zhao, Xingdong ;
Qiu, Jiadong .
THEORETICAL AND APPLIED FRACTURE MECHANICS, 2025, 138
[37]   Experiment and Peridynamics Simulation on Failure Mechanical Behavior of Cylindrical Sandstone Containing Two Persisting Fissures Under Conventional Triaxial Compression [J].
Yang, Sheng-Qi ;
Li, Heng ;
Du, Shi-Gui ;
Yong, Rui ;
Wang, Su-Sheng ;
Tian, Wen-Ling ;
Hu, Yun-Jin ;
Niu, Yong .
ROCK MECHANICS AND ROCK ENGINEERING, 2025, 58 (03) :3129-3157
[38]   Experimental study on failure characteristics of single-sided unloading rock under different intermediate principal stress conditions [J].
Liu, Chongyan ;
Zhao, Guangming ;
Xu, Wensong ;
Meng, Xiangrui ;
Liu, Zhixi ;
Cheng, Xiang ;
Lin, Gang .
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2023, 33 (03) :275-287
[39]   Deformation and CO2 gas permeability response of sandstone to mean and deviatoric stress variations under true triaxial stress conditions [J].
Lu, Jun ;
Yin, Guangzhi ;
Li, Xing ;
Li, Minghui ;
Zhang, Dongming ;
Zhang, Weizhong ;
Kang, Qinrong .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2019, 84 :259-272
[40]   Investigation of mechanical and ultrasonic properties of sandstone with different flaws characteristics under triaxial stress [J].
Li, Yang ;
Xia, Binwei ;
Gao, Yugang .
THEORETICAL AND APPLIED FRACTURE MECHANICS, 2024, 134