دورية أكاديمية
Application of Shallow-Hole Blasting in Improving the Stability of Gob-Side Retaining Entry in Deep Mines: A Case Study
| العنوان: | Application of Shallow-Hole Blasting in Improving the Stability of Gob-Side Retaining Entry in Deep Mines: A Case Study |
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| المؤلفون: | Yong Chen, Shuqi Ma, Yugui Yang, Ningkang Meng, Jianbiao Bai |
| المصدر: | Energies, Vol 12, Iss 19, p 3623 (2019) |
| بيانات النشر: | MDPI AG, 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Technology |
| مصطلحات موضوعية: | gob-side entry retaining, deep mine, shallow-hole blasting, hard roof, Technology |
| الوصف: | The hanging of hard roof strata in the gob-side retaining entry in deep mines could lead to dynamic disasters. The pressure relief mechanism for the hard roof strata using shallow-hole blasting was investigated by a combined method of theoretical analysis, numerical simulation, and field test in the Sanhejian coal mine. The shallow-hole blasting model was established using LS-DYNA3D(Livemore software of explicit dynamics analysis code). The evolution and propagation law of effective stress induced by shallow-hole blasting was analyzed. The parameters related to shallow-hole blasting were determined via a combined method of numerical analysis and theoretical calculations. These were applied to the field tests. The effect of shallow-hole blasting on the strata control of deep gob-side retaining entry was studied by comparing two scenarios in the field: a deep gob-side retaining entry with and without shallow-hole blasting. It was found that the convergences of the entry decreased due to the shallow-hole blasting. This indicates that shallow-hole blasting is a good technique to maintain the stability of the gob-side retaining entry with a hard roof in deep mines. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1996-1073 12193623 |
| Relation: | https://www.mdpi.com/1996-1073/12/19/3623; https://doaj.org/toc/1996-1073 |
| DOI: | 10.3390/en12193623 |
| URL الوصول: | https://doaj.org/article/ee73b119d8d94291834b93e17c95c721 |
| رقم الأكسشن: | edsdoj.73b119d8d94291834b93e17c95c721 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19961073 12193623 |
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| DOI: | 10.3390/en12193623 |