Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting Shock
For limiting the damage range caused by explosive shock loads in vertical crater retreat (VCR) mining, the blasting damage characteristics of surrounding rock were studied by two methods: numerical simulation and ultrasonic testing. Combined with the mining blasting in Dongguashan Copper Mine of Chi...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/373021 |
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| _version_ | 1850224043945361408 |
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| author | Nan Jiang Chuanbo Zhou Xuedong Luo Shiwei Lu |
| author_facet | Nan Jiang Chuanbo Zhou Xuedong Luo Shiwei Lu |
| author_sort | Nan Jiang |
| collection | DOAJ |
| description | For limiting the damage range caused by explosive shock loads in vertical crater retreat (VCR) mining, the blasting damage characteristics of surrounding rock were studied by two methods: numerical simulation and ultrasonic testing. Combined with the mining blasting in Dongguashan Copper Mine of China, the VCR blasting shock characteristics under different conditions are obtained by using LSDYNA. Based on statistical fracture mechanics and damage mechanics theories, a damage constitutive model for rock mass subjected to blasting shock load was established. Then by using the fast Lagrange analysis codes (FLAC3D), the blasting damage characteristics of surrounding rock were analyzed by applying the blasting shock loads obtained from the VCR mining and the damage zone is obtained. At last, the relationship between the amount of explosives and the radius of damaged surrounding rock mass was discussed, and its formula was also derived. The research provides a theoretical basis for rationally controlling stope boundaries and optimizing mining blasting parameters. |
| format | Article |
| id | doaj-art-544b72ca320c40e1b4bd7387c296e92a |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-544b72ca320c40e1b4bd7387c296e92a2025-08-20T02:05:45ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/373021373021Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting ShockNan Jiang0Chuanbo Zhou1Xuedong Luo2Shiwei Lu3Engineering Research Center of Rock-Soil & Excavation and Protection, Ministry of Education, Wuhan 430074, ChinaEngineering Research Center of Rock-Soil & Excavation and Protection, Ministry of Education, Wuhan 430074, ChinaEngineering Research Center of Rock-Soil & Excavation and Protection, Ministry of Education, Wuhan 430074, ChinaEngineering Research Center of Rock-Soil & Excavation and Protection, Ministry of Education, Wuhan 430074, ChinaFor limiting the damage range caused by explosive shock loads in vertical crater retreat (VCR) mining, the blasting damage characteristics of surrounding rock were studied by two methods: numerical simulation and ultrasonic testing. Combined with the mining blasting in Dongguashan Copper Mine of China, the VCR blasting shock characteristics under different conditions are obtained by using LSDYNA. Based on statistical fracture mechanics and damage mechanics theories, a damage constitutive model for rock mass subjected to blasting shock load was established. Then by using the fast Lagrange analysis codes (FLAC3D), the blasting damage characteristics of surrounding rock were analyzed by applying the blasting shock loads obtained from the VCR mining and the damage zone is obtained. At last, the relationship between the amount of explosives and the radius of damaged surrounding rock mass was discussed, and its formula was also derived. The research provides a theoretical basis for rationally controlling stope boundaries and optimizing mining blasting parameters.http://dx.doi.org/10.1155/2015/373021 |
| spellingShingle | Nan Jiang Chuanbo Zhou Xuedong Luo Shiwei Lu Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting Shock Shock and Vibration |
| title | Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting Shock |
| title_full | Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting Shock |
| title_fullStr | Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting Shock |
| title_full_unstemmed | Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting Shock |
| title_short | Damage Characteristics of Surrounding Rock Subjected to VCR Mining Blasting Shock |
| title_sort | damage characteristics of surrounding rock subjected to vcr mining blasting shock |
| url | http://dx.doi.org/10.1155/2015/373021 |
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