دورية أكاديمية
Research on the pressure relief law of diamond beaded rope saw cutting seam: a numerical investigation
| العنوان: | Research on the pressure relief law of diamond beaded rope saw cutting seam: a numerical investigation |
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| المؤلفون: | Jianguo Zhang, Xiaochuan Wang, Zhaolong Ge, Man Wang, Wei Wang |
| المصدر: | Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-32 (2024) |
| بيانات النشر: | Springer, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Geophysics. Cosmic physics |
| مصطلحات موضوعية: | Diamond beaded rope saw, Slotting technique, Permeability enhancement, Pressure relief mechanism, Slit effect analysis, Geophysics. Cosmic physics, QC801-809 |
| الوصف: | Abstract As a new technology to mitigate the high outburst risk of the low permeability coal seam, it is essential to delve deeper into the law and mechanism of pressure relief associated with the diamond beaded rope saw slotting. The paper presents a numerical calculation model under small size that is based on the superimposed beam theory and the contact surface model. The model is compared with the experimental results of similar models in the laboratory to verify its applicability for simulating the numerical calculation of stress distribution in coal seam cut by diamond beaded rope saw. The study then goes on to investigate the influence of coal seam inclination, working face length, coal seam hardness, and seam advancing distance on the pressure relief effect of diamond beaded rope saw cutting seam under engineering scale. The mechanism of the diamond beaded rope saw cutting seam is also analyzed. The results indicate that the diamond beaded rope saw effectively reduces pressure in low permeability coal seams, with the impact range extending to the slit area. Additionally, stress concentration was observed at the front of the slit. Increasing the inclination of the coal seam, working face length, and advancing distance of the cutting seam enhances the pressure relief effect of the diamond beaded rope saw. The latter two factors’ influence is reflected in the direction along the working face and the direction of mining advance, respectively. The efficacy of pressure relief through this particular method is comparatively better in soft coal than in hard coal. This research is significant in promoting the widespread application of diamond beaded rope saws in the pressure relief of coal seam cutting. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2363-8419 2363-8427 |
| Relation: | https://doaj.org/toc/2363-8419; https://doaj.org/toc/2363-8427 |
| DOI: | 10.1007/s40948-024-00798-2 |
| URL الوصول: | https://doaj.org/article/d41b9adf736c42f2966c29e97aaab189 |
| رقم الأكسشن: | edsdoj.41b9adf736c42f2966c29e97aaab189 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 23638419 23638427 |
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| DOI: | 10.1007/s40948-024-00798-2 |