Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads
With the increasing depth of coal mining and expanding mining scale, the rocks surrounding deep roadways are in a complex mechanical condition of frequent dynamic disturbance. The heterogeneity has an important influence on rock mass failure under dynamic loads. Therefore, it is necessary to study t...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/2738627 |
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| _version_ | 1832549168456925184 |
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| author | Tao Guo Hao Feng Zequan Sun Yang Zhao Xingyu Wu Xinggang Xu Lishuai Jiang |
| author_facet | Tao Guo Hao Feng Zequan Sun Yang Zhao Xingyu Wu Xinggang Xu Lishuai Jiang |
| author_sort | Tao Guo |
| collection | DOAJ |
| description | With the increasing depth of coal mining and expanding mining scale, the rocks surrounding deep roadways are in a complex mechanical condition of frequent dynamic disturbance. The heterogeneity has an important influence on rock mass failure under dynamic loads. Therefore, it is necessary to study the deformation and failure of heterogeneous roadway under dynamic load. In this paper, the effect of heterogeneity on stability of roadway under static and different dynamic loads is studied. According to the results, the effect of rock mass heterogeneity on the deformation and failure of surrounding rock varies with different degrees of heterogeneity. Under static loading conditions, the stability of roadway is negatively correlated with the degree of heterogeneity of the rock mass. Under dynamic loading conditions, the change of heterogeneity degree has significant influence on the stability of surrounding rock. With the increase in dynamic load strength, the change in variation difference in the average value of roof sag, stress distribution, and plastic zone caused by variations in heterogeneity will increase. This study contributes to understanding the deformation and failure characteristics of heterogeneous roadways under dynamic loads and can be used to analyze heterogeneous roadways under dynamic loads. |
| format | Article |
| id | doaj-art-7509ef1d26da4b8d91fea28b6089066c |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-7509ef1d26da4b8d91fea28b6089066c2025-02-03T06:11:59ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/27386272738627Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic LoadsTao Guo0Hao Feng1Zequan Sun2Yang Zhao3Xingyu Wu4Xinggang Xu5Lishuai Jiang6State Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaState Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266590, ChinaWith the increasing depth of coal mining and expanding mining scale, the rocks surrounding deep roadways are in a complex mechanical condition of frequent dynamic disturbance. The heterogeneity has an important influence on rock mass failure under dynamic loads. Therefore, it is necessary to study the deformation and failure of heterogeneous roadway under dynamic load. In this paper, the effect of heterogeneity on stability of roadway under static and different dynamic loads is studied. According to the results, the effect of rock mass heterogeneity on the deformation and failure of surrounding rock varies with different degrees of heterogeneity. Under static loading conditions, the stability of roadway is negatively correlated with the degree of heterogeneity of the rock mass. Under dynamic loading conditions, the change of heterogeneity degree has significant influence on the stability of surrounding rock. With the increase in dynamic load strength, the change in variation difference in the average value of roof sag, stress distribution, and plastic zone caused by variations in heterogeneity will increase. This study contributes to understanding the deformation and failure characteristics of heterogeneous roadways under dynamic loads and can be used to analyze heterogeneous roadways under dynamic loads.http://dx.doi.org/10.1155/2021/2738627 |
| spellingShingle | Tao Guo Hao Feng Zequan Sun Yang Zhao Xingyu Wu Xinggang Xu Lishuai Jiang Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads Shock and Vibration |
| title | Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads |
| title_full | Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads |
| title_fullStr | Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads |
| title_full_unstemmed | Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads |
| title_short | Numerical Analysis of the Effect of Heterogeneity on Underground Roadway Stability under Dynamic Loads |
| title_sort | numerical analysis of the effect of heterogeneity on underground roadway stability under dynamic loads |
| url | http://dx.doi.org/10.1155/2021/2738627 |
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