Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice
The potential dynamic risk of the mined underground space with hard overlying strata is one of the main concerns for coal operators. This paper presents a comprehensive study on treating the hard overlying strata upon the coal seam through the presplit blasting technique. The properties of the overl...
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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: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5558538 |
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| author | Baisheng Zhang Zhiping Yang Xuming Yang Shuai Zhang |
| author_facet | Baisheng Zhang Zhiping Yang Xuming Yang Shuai Zhang |
| author_sort | Baisheng Zhang |
| collection | DOAJ |
| description | The potential dynamic risk of the mined underground space with hard overlying strata is one of the main concerns for coal operators. This paper presents a comprehensive study on treating the hard overlying strata upon the coal seam through the presplit blasting technique. The properties of the overlying strata were firstly investigated and evaluated via the laboratory tests and theoretical analysis. With the consideration of the geological and mining condition of the research area, the critical parameters of the presplit blasting technique (e.g., unsaturation coefficient, borehole spacing, and the slit width) were consequently determined via the numerical simulation with the application of LS-DYNA. Then, the field practice in accordance with the determined parameters was carried out in Yuwu coal mine. The effectiveness of the presplit blasting technique was well verified when the microstructures of the surrounding rock were investigated. The success presented in this paper does not only demonstrate the feasibility of using the presplit blasting technique in treating the hard strata of underground mines but also provide a guideline in determining the critical parameters by the numerical simulation and theoretical analysis from the design aspect. |
| format | Article |
| id | doaj-art-5a5fd9d2547c43e4ba5351eeeed495e4 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-5a5fd9d2547c43e4ba5351eeeed495e42025-02-03T01:05:25ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/55585385558538Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field PracticeBaisheng Zhang0Zhiping Yang1Xuming Yang2Shuai Zhang3College of Mining Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaCollege of Mining Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, ChinaXinjin Company, Huayang New Material Technology Group Co., Ltd., Yangquan, Shanxi 045000, ChinaDepartment of Construction Development, Jinneng Holding Equipment Manufacturing Group, Jincheng, Shanxi 048000, ChinaThe potential dynamic risk of the mined underground space with hard overlying strata is one of the main concerns for coal operators. This paper presents a comprehensive study on treating the hard overlying strata upon the coal seam through the presplit blasting technique. The properties of the overlying strata were firstly investigated and evaluated via the laboratory tests and theoretical analysis. With the consideration of the geological and mining condition of the research area, the critical parameters of the presplit blasting technique (e.g., unsaturation coefficient, borehole spacing, and the slit width) were consequently determined via the numerical simulation with the application of LS-DYNA. Then, the field practice in accordance with the determined parameters was carried out in Yuwu coal mine. The effectiveness of the presplit blasting technique was well verified when the microstructures of the surrounding rock were investigated. The success presented in this paper does not only demonstrate the feasibility of using the presplit blasting technique in treating the hard strata of underground mines but also provide a guideline in determining the critical parameters by the numerical simulation and theoretical analysis from the design aspect.http://dx.doi.org/10.1155/2021/5558538 |
| spellingShingle | Baisheng Zhang Zhiping Yang Xuming Yang Shuai Zhang Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice Advances in Civil Engineering |
| title | Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice |
| title_full | Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice |
| title_fullStr | Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice |
| title_full_unstemmed | Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice |
| title_short | Presplit Blasting Technique in Treating Hard Overlying Strata: From Numerical Simulation to Field Practice |
| title_sort | presplit blasting technique in treating hard overlying strata from numerical simulation to field practice |
| url | http://dx.doi.org/10.1155/2021/5558538 |
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