Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway
It is theoretically and practically significant to study the dynamic fracture of the roadway surrounding rock under impact for analyzing mechanisms of roadway rockbursts and for predicting and preventing them. When roadway rockbursts are modeled on the microcomputer, the foreign commercial software...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of China Coal Society
2025-03-01
|
| Series: | Meitan xuebao |
| Subjects: | |
| Online Access: | http://www.mtxb.com.cn/article/doi/10.13225/j.cnki.jccs.2024.0162 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850156350385946624 |
|---|---|
| author | Xuebin WANG Qinjie ZHANG Yishan PAN Liqiang MA Xiaoshuai LI Dong LIU Xueyuan BAI Shuangyin CHEN |
| author_facet | Xuebin WANG Qinjie ZHANG Yishan PAN Liqiang MA Xiaoshuai LI Dong LIU Xueyuan BAI Shuangyin CHEN |
| author_sort | Xuebin WANG |
| collection | DOAJ |
| description | It is theoretically and practically significant to study the dynamic fracture of the roadway surrounding rock under impact for analyzing mechanisms of roadway rockbursts and for predicting and preventing them. When roadway rockbursts are modeled on the microcomputer, the foreign commercial software has small-scale computing capacity, low computing efficiency, and limited applicability. In the present paper, based on the GPU parallel computing system of the strata motion, i.e., StrataKing developed by us in the past ten years, the dynamic modeling ability is developed. The present method is validated through modeling the dynamic tests for rock specimens in uniaxial compression. The static constitutive model (the Hooke’s law) is replaced by the Zhu-Wang-Tang dynamic constitutive model applicable in a wide range of strain rates. The static cohesion in the Mohr-Coulomb criteria is replaced by the dynamic cohesion to consider the dynamic strength of rock. The local adaptive dumping leading to over damping in the dynamic modeling is replaced by the viscous dumping. The model composed of a roadway and its surrounding rock is impacted at the top of the model in the form of the constant velocity. Effects of the velocity on the instability of the model are investigated. At low strain rates, the instability of the model exhibits intermittent characteristics, which is due to the fact that the strength of the surrounding rock is low and few strain energy is stored. Thus, instability begins and ends easily, but no kinetic enough is provided for a serious large instability. However, at high strain rates, the development of the cracking regions at two sides of the roadway is very rapid, which is due to the fact that the need energy can be provided timely. Thus, the instability is continuous. When the stored strain energy is high, the instability takes place and ending is difficult, resulting in a serious dynamic hazard. The present work provides a good technical base for the study on the anti-impact of the roadway under support in the future. |
| format | Article |
| id | doaj-art-ec99ec5193294d8fb447dfd2be6448ce |
| institution | OA Journals |
| issn | 0253-9993 |
| language | zho |
| publishDate | 2025-03-01 |
| publisher | Editorial Office of Journal of China Coal Society |
| record_format | Article |
| series | Meitan xuebao |
| spelling | doaj-art-ec99ec5193294d8fb447dfd2be6448ce2025-08-20T02:24:34ZzhoEditorial Office of Journal of China Coal SocietyMeitan xuebao0253-99932025-03-015031473148310.13225/j.cnki.jccs.2024.01622024-0162Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadwayXuebin WANG0Qinjie ZHANG1Yishan PAN2Liqiang MA3Xiaoshuai LI4Dong LIU5Xueyuan BAI6Shuangyin CHEN7Institute of Computational Mechanics, Liaoning Technical University, Fuxin 123000, ChinaCollege of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaInstitute of Disaster Rock Mechanics, Liaoning University, Shenyang 110036, ChinaXinjiang Key Laboratory of Coal-bearing Resources Exploration and Exploitation, Urumqi 830023, ChinaCollege of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaCollege of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaCollege of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaCollege of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaIt is theoretically and practically significant to study the dynamic fracture of the roadway surrounding rock under impact for analyzing mechanisms of roadway rockbursts and for predicting and preventing them. When roadway rockbursts are modeled on the microcomputer, the foreign commercial software has small-scale computing capacity, low computing efficiency, and limited applicability. In the present paper, based on the GPU parallel computing system of the strata motion, i.e., StrataKing developed by us in the past ten years, the dynamic modeling ability is developed. The present method is validated through modeling the dynamic tests for rock specimens in uniaxial compression. The static constitutive model (the Hooke’s law) is replaced by the Zhu-Wang-Tang dynamic constitutive model applicable in a wide range of strain rates. The static cohesion in the Mohr-Coulomb criteria is replaced by the dynamic cohesion to consider the dynamic strength of rock. The local adaptive dumping leading to over damping in the dynamic modeling is replaced by the viscous dumping. The model composed of a roadway and its surrounding rock is impacted at the top of the model in the form of the constant velocity. Effects of the velocity on the instability of the model are investigated. At low strain rates, the instability of the model exhibits intermittent characteristics, which is due to the fact that the strength of the surrounding rock is low and few strain energy is stored. Thus, instability begins and ends easily, but no kinetic enough is provided for a serious large instability. However, at high strain rates, the development of the cracking regions at two sides of the roadway is very rapid, which is due to the fact that the need energy can be provided timely. Thus, the instability is continuous. When the stored strain energy is high, the instability takes place and ending is difficult, resulting in a serious dynamic hazard. The present work provides a good technical base for the study on the anti-impact of the roadway under support in the future.http://www.mtxb.com.cn/article/doi/10.13225/j.cnki.jccs.2024.0162roadway rockburstdynamic constitutive modelviscous dampingparallel computingcontinuum-discontinuum method |
| spellingShingle | Xuebin WANG Qinjie ZHANG Yishan PAN Liqiang MA Xiaoshuai LI Dong LIU Xueyuan BAI Shuangyin CHEN Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway Meitan xuebao roadway rockburst dynamic constitutive model viscous damping parallel computing continuum-discontinuum method |
| title | Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway |
| title_full | Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway |
| title_fullStr | Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway |
| title_full_unstemmed | Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway |
| title_short | Introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway |
| title_sort | introduction of dynamic constitutive model into parallel computing system of strata motion and modeling of impact fracture process of roadway |
| topic | roadway rockburst dynamic constitutive model viscous damping parallel computing continuum-discontinuum method |
| url | http://www.mtxb.com.cn/article/doi/10.13225/j.cnki.jccs.2024.0162 |
| work_keys_str_mv | AT xuebinwang introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway AT qinjiezhang introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway AT yishanpan introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway AT liqiangma introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway AT xiaoshuaili introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway AT dongliu introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway AT xueyuanbai introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway AT shuangyinchen introductionofdynamicconstitutivemodelintoparallelcomputingsystemofstratamotionandmodelingofimpactfractureprocessofroadway |