Mechanistic formulation and validation of cutting seam by energy-focusing blast for pressure relief of deep roadway
文献类型：期刊论文
| 作者 | Zhang, Xingyu2,3,4; Pak, Ronald Y. S.4; Yang, Jun3; Lei, Liang2; Niu, Huiya5; Niu, Yusong1; Zhao, Chengwei6; Gao, Hainan3; He, Manchao3 |
| 刊名 | ENGINEERING FAILURE ANALYSIS
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 150期号:-页码:- |
| ISSN号 | 1350-6307 |
| 关键词 | Pressure relief Deep coal mining Technique application Retained roadway |
| 英文摘要 | Coal sources still comprise a significant proportion of the global energy supply, especially for developing countries. As mining depth increases, roadway instability, failure, and burst become increasing concerns over deep resource utilization and mining safety. Cutting seam by energyfocusing blast (CSEFB) technique is a novel approach to mitigate the problems. Driven by the demand for further understanding and application, this study discusses the mechanistic formulation of CSEFB through theoretical analysis, numerical simulation, and field experiments. Results show that CSEFB uses the broken-expansion rock and roof-cutting effect to relieve mining stresses. The CSEFB angle and length are two critical technical parameters. The angle is the prerequisite for validating pressure relief, and the length is the condition for determining the relief degree. The formulas are given for determining the range of angle and length. Within the range, the pressure-relief effect decreases modestly with increasing angle and increases significantly with increasing length. The standard length is proposed to use the support by bulking rock fully. An increase in the length can provide an additional effect by roof cutting itself, but this effect is limited as the length increases. This mechanism helps the formulation of CSEFB in the application. A bigger angle and the standard length are primary considerations. If requiring additional pressure-relief effect, a moderate increase in the length can add to pressure-relief effect by improving the stress field. Combined numerical simulation and field experiment with a typical high-stress deep mine, CSEFB exhibits good adaptability. Apart from relieving the high vertical stress, CSEFB avoids bad influences by the great horizontal stresses. The floor heave is exploited to facilitate the pressure-relief process. Research results have importance to the CSEFB application and promotion, thus contributing to the safety of deep mining. |
| 学科主题 | Engineering ; Materials Science |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:001016283700001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35523]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Inner Mongolia Zhongtai Energy Co., Ltd, Erdos, Inner Mongolia 017000, China 2.Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, Zhejiang 310024, China 3.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology, Beijing 100083, China 4.Department of Civil, Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, USA 5.Shanghai Research Institute of Building Sciences Co., Ltd, Shanghai 201108, China 6.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China |
| 推荐引用方式 GB/T 7714 | Zhang, Xingyu,Pak, Ronald Y. S.,Yang, Jun,et al. Mechanistic formulation and validation of cutting seam by energy-focusing blast for pressure relief of deep roadway[J]. ENGINEERING FAILURE ANALYSIS,2023,150(-):-. |
| APA | Zhang, Xingyu.,Pak, Ronald Y. S..,Yang, Jun.,Lei, Liang.,Niu, Huiya.,...&He, Manchao.(2023).Mechanistic formulation and validation of cutting seam by energy-focusing blast for pressure relief of deep roadway.ENGINEERING FAILURE ANALYSIS,150(-),-. |
| MLA | Zhang, Xingyu,et al."Mechanistic formulation and validation of cutting seam by energy-focusing blast for pressure relief of deep roadway".ENGINEERING FAILURE ANALYSIS 150.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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