Experimental study on impact failure characteristics of deep circular roadway
In order to study the impact failure characteristics of deep circular roadway under the condition of disturbance load, based on the self-developed multi-functional physical simulation test system of rock burst, the impact failure test of circular roadway was carried out for large-scale rock-like mat...
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Editorial Office of Safety in Coal Mines
2025-01-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240015 |
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| author | Shoujian PENG Yan YANG Jiang XU Qingfeng XU Chaolong QIN Xiaoli NONG |
| author_facet | Shoujian PENG Yan YANG Jiang XU Qingfeng XU Chaolong QIN Xiaoli NONG |
| author_sort | Shoujian PENG |
| collection | DOAJ |
| description | In order to study the impact failure characteristics of deep circular roadway under the condition of disturbance load, based on the self-developed multi-functional physical simulation test system of rock burst, the impact failure test of circular roadway was carried out for large-scale rock-like materials. The impact failure process of underground 800 m roadway under mining disturbance was simulated, and the stress-strain, blasting, acoustic emission and infrared radiation response characteristics of impact failure of deep circular roadway were analyzed. The results show that the impact failure process of deep circular roadway is divided into four stages: quiet period, particle ejection period, block spalling period and comprehensive failure period. After the failure of the roadway, “V” shaped blasting pits are formed on both sides. The area of the right blasting pit is larger than that of the left, and the degree of damage is higher than that of the left. When the roadway began to produce particle ejection, it entered the initial failure stage, the acoustic emission count and energy increased slowly, the temperature of the infrared radiation temperature field was evenly distributed, and the degree of differentiation was low. With the increase of disturbance stress, the energy of acoustic emission count increases gradually, the temperature field of infrared radiation rises and forms a high temperature concentration area, and the temperature field differentiation is obvious. The acoustic emission count and energy increase suddenly near comprehensive damage, the degree of infrared radiation temperature field differentiation reaches the maximum and then decreases, and the overall temperature of the temperature field in the low temperature region increases. |
| format | Article |
| id | doaj-art-42b38da9db9e40faa63865fbecbee69c |
| institution | Kabale University |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-42b38da9db9e40faa63865fbecbee69c2025-01-15T04:32:08ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-01-0156110711610.13347/j.cnki.mkaq.20240015cMKAQ20240015Experimental study on impact failure characteristics of deep circular roadwayShoujian PENG0Yan YANG1Jiang XU2Qingfeng XU3Chaolong QIN4Xiaoli NONG5State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, ChinaIn order to study the impact failure characteristics of deep circular roadway under the condition of disturbance load, based on the self-developed multi-functional physical simulation test system of rock burst, the impact failure test of circular roadway was carried out for large-scale rock-like materials. The impact failure process of underground 800 m roadway under mining disturbance was simulated, and the stress-strain, blasting, acoustic emission and infrared radiation response characteristics of impact failure of deep circular roadway were analyzed. The results show that the impact failure process of deep circular roadway is divided into four stages: quiet period, particle ejection period, block spalling period and comprehensive failure period. After the failure of the roadway, “V” shaped blasting pits are formed on both sides. The area of the right blasting pit is larger than that of the left, and the degree of damage is higher than that of the left. When the roadway began to produce particle ejection, it entered the initial failure stage, the acoustic emission count and energy increased slowly, the temperature of the infrared radiation temperature field was evenly distributed, and the degree of differentiation was low. With the increase of disturbance stress, the energy of acoustic emission count increases gradually, the temperature field of infrared radiation rises and forms a high temperature concentration area, and the temperature field differentiation is obvious. The acoustic emission count and energy increase suddenly near comprehensive damage, the degree of infrared radiation temperature field differentiation reaches the maximum and then decreases, and the overall temperature of the temperature field in the low temperature region increases.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240015deep roadwayimpact damageimpact tendencyacoustic emissioninfrared radiation |
| spellingShingle | Shoujian PENG Yan YANG Jiang XU Qingfeng XU Chaolong QIN Xiaoli NONG Experimental study on impact failure characteristics of deep circular roadway Meikuang Anquan deep roadway impact damage impact tendency acoustic emission infrared radiation |
| title | Experimental study on impact failure characteristics of deep circular roadway |
| title_full | Experimental study on impact failure characteristics of deep circular roadway |
| title_fullStr | Experimental study on impact failure characteristics of deep circular roadway |
| title_full_unstemmed | Experimental study on impact failure characteristics of deep circular roadway |
| title_short | Experimental study on impact failure characteristics of deep circular roadway |
| title_sort | experimental study on impact failure characteristics of deep circular roadway |
| topic | deep roadway impact damage impact tendency acoustic emission infrared radiation |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240015 |
| work_keys_str_mv | AT shoujianpeng experimentalstudyonimpactfailurecharacteristicsofdeepcircularroadway AT yanyang experimentalstudyonimpactfailurecharacteristicsofdeepcircularroadway AT jiangxu experimentalstudyonimpactfailurecharacteristicsofdeepcircularroadway AT qingfengxu experimentalstudyonimpactfailurecharacteristicsofdeepcircularroadway AT chaolongqin experimentalstudyonimpactfailurecharacteristicsofdeepcircularroadway AT xiaolinong experimentalstudyonimpactfailurecharacteristicsofdeepcircularroadway |