Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine
During the excavation process in fractured rock masses in underground mines, blasting excavation can cause dangerous block collapses on surrounding rock. The applicable blasting method can effectively reduce the damage of surrounding rock caused by blasting disturbance. In order to investigate the i...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-11-01
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| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023097669 |
| _version_ | 1827615794527207424 |
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| author | Zhongyuan Gu Miaocong Cao |
| author_facet | Zhongyuan Gu Miaocong Cao |
| author_sort | Zhongyuan Gu |
| collection | DOAJ |
| description | During the excavation process in fractured rock masses in underground mines, blasting excavation can cause dangerous block collapses on surrounding rock. The applicable blasting method can effectively reduce the damage of surrounding rock caused by blasting disturbance. In order to investigate the impact of blasting disturbances of dangerous blocks in fractured rock mass drift, this study focuses on the instability characteristics of dangerous blocks during the excavation process in a mine located in Jilin Province. Based on detailed detection of discontinuities characteristics in the study area, the damage effects of shaped charge hydraulic blasting and conventional blasting on surrounding rock structure are analyzed and compared by using equivalent static method. The 3DEC discrete element software was used to analyze the instability characteristics of surrounding rock dangerous blocks under these two different blasting methods. The results indicate that using shaped charge hydraulic blasting can effectively reduce the impact of blasting disturbances on the excavated rock mass and minimize dangerous block collapses during drift excavation. |
| first_indexed | 2024-03-09T09:15:46Z |
| format | Article |
| id | doaj.art-65c74c6c87c74f3a9883ad000a7028cb |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-09T09:15:46Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-65c74c6c87c74f3a9883ad000a7028cb2023-12-02T07:06:06ZengElsevierHeliyon2405-84402023-11-01911e22558Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mineZhongyuan Gu0Miaocong Cao1Corresponding author.; School of Investigation and Surveying Engineering, Changchun Institute of Technology, Changchun, Jilin, 130021, PR ChinaSchool of Investigation and Surveying Engineering, Changchun Institute of Technology, Changchun, Jilin, 130021, PR ChinaDuring the excavation process in fractured rock masses in underground mines, blasting excavation can cause dangerous block collapses on surrounding rock. The applicable blasting method can effectively reduce the damage of surrounding rock caused by blasting disturbance. In order to investigate the impact of blasting disturbances of dangerous blocks in fractured rock mass drift, this study focuses on the instability characteristics of dangerous blocks during the excavation process in a mine located in Jilin Province. Based on detailed detection of discontinuities characteristics in the study area, the damage effects of shaped charge hydraulic blasting and conventional blasting on surrounding rock structure are analyzed and compared by using equivalent static method. The 3DEC discrete element software was used to analyze the instability characteristics of surrounding rock dangerous blocks under these two different blasting methods. The results indicate that using shaped charge hydraulic blasting can effectively reduce the impact of blasting disturbances on the excavated rock mass and minimize dangerous block collapses during drift excavation.http://www.sciencedirect.com/science/article/pii/S2405844023097669Fractured rock massBlasting disturbanceDangerous block3DEC |
| spellingShingle | Zhongyuan Gu Miaocong Cao Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine Heliyon Fractured rock mass Blasting disturbance Dangerous block 3DEC |
| title | Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine |
| title_full | Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine |
| title_fullStr | Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine |
| title_full_unstemmed | Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine |
| title_short | Analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine |
| title_sort | analysis of unstable block by discrete element method during blasting excavation of fractured rock mass in underground mine |
| topic | Fractured rock mass Blasting disturbance Dangerous block 3DEC |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023097669 |
| work_keys_str_mv | AT zhongyuangu analysisofunstableblockbydiscreteelementmethodduringblastingexcavationoffracturedrockmassinundergroundmine AT miaocongcao analysisofunstableblockbydiscreteelementmethodduringblastingexcavationoffracturedrockmassinundergroundmine |