دورية أكاديمية
Numerical Study on Coal Burst Proneness Characteristics of Fissured Coal Mass
| العنوان: | Numerical Study on Coal Burst Proneness Characteristics of Fissured Coal Mass |
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| المؤلفون: | Zhijie Zhu, Zhenhua Yao, Jan Nemcik, Laigui Wang, Jun Han, Lihai Tan |
| المصدر: | Lithosphere, Vol 2022, Iss Special 10 (2022) |
| بيانات النشر: | GeoScienceWorld, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Geology |
| مصطلحات موضوعية: | Geology, QE1-996.5 |
| الوصف: | AbstractCoal burst proneness of coal mass is a leading factor of coal burst which is influenced by fissures. In this paper, the elastic strain energy (ESE) and residual energy index (REI) were used as coal burst proneness indicators. The calibrated PFC2D models of coal specimens with various fissure configurations were established, and uniaxial compression tests were conducted. It was found that the uniaxial compressive strength (UCS), ESE, and REI for three types of fissured coal specimen were similar. The aforementioned three parameters decrease as the inclination angle increases from 0° to 30°. On the other hand, these parameters increase as the inclination angle increases from 30° to 90°. Through the coal burst proneness comparison of various fissure configurations, it was found that the coal burst proneness in the condition of two coplanar-parallel fissures was greater than that in the condition of a single fissure, whereas the coal burst proneness in the condition of two non-coplanar-parallel fissures was the lowest. The crack initiation stress, crack initiation stress level, and elastic strain energy distribution could explain the influence mechanism of fissures on the coal burst proneness. These results can be used as a guideline for forecasting and preventing coal burst. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1947-4253 1941-8264 |
| Relation: | https://pubs.geoscienceworld.org/lithosphere/article/2022/Special%2010/4183940/615495/Numerical-Study-on-Coal-Burst-Proneness; https://doaj.org/toc/1941-8264; https://doaj.org/toc/1947-4253 |
| DOI: | 10.2113/2022/4183940 |
| URL الوصول: | https://doaj.org/article/049459d323a347e4a137e22eb2cff71f |
| رقم الأكسشن: | edsdoj.049459d323a347e4a137e22eb2cff71f |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19474253 19418264 |
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| DOI: | 10.2113/2022/4183940 |