A prediction model and numerical simulation of the location of the longwall face during the highest possible failure period of gob gas ventholes
文献类型：期刊论文
| 作者 | Liu, Yingke1,2; Zhou, Fubao2; Geng, Xinze2; Chang, Lipeng2; Kang, Jianhong2; Cui, Guanglei3; Zhang, Shaofeng2 |
| 刊名 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2017 |
| 卷号 | 37页码:178-191 |
| ISSN号 | 1875-5100 |
| 关键词 | Gob gas ventholes Highest possible failure period Longwall face advancing The location of longwall face |
| DOI | 10.1016/j.jngse.2016.11.028 |
| 英文摘要 | The failure of gob gas ventholes (GGVs) is the main cause of shortening the highly efficient drainage period of GGVs. Therefore, in order to improve the stability of GGVs, it is of great significance to investigate the location of a longwall face when a GGV is in the highest possible failure period. Based on the probability integral method, this paper obtained a modified equation for calculating the amount of horizontal movement of an overlying stratum during longwall mining, and in this equation, the influence of the distance between the overlying stratum and the coal seam on the subsidence coefficient of the stratum was taken into account. In addition, this paper established a prediction model of the location of the working face during the highest possible failure period of GGVs. Furthermore, taking Zhangbei coal mine as an example, this paper investigated the distribution of the maximal amount of relative horizontal movement (RHM) of the contiguous strata along a venthole and explored the changing characteristics of the maximal amount of RHM of the overlying contiguous strata as the distance of the working face passing GGV increases. In addition, this paper also researched the distribution of shear stress exerted on casing along a venthole during coal mining and the changing characteristics of shear stress as working face advances using numerical simulations. The results showed that when the longwall face passed the venthole by approximately 30-70 m, GGVs were in the highest possible failure period, which is the early stage of longwall face passing GGV. Zhangbei and Xieqiao coal mines in Huainan mining area of China carried out the engineering application of extracting depresssurized gas with GGVs. The measured failure data of ventholes 11418-1, 11418-2, 1242(1)-2 and 1242(1)-3 validated the prediction. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000392679900013 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3981]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.China Univ Min Technol, State Key Lab Coal Resources & Mine Safety ; 2.China Univ Min & Technol, Fac Safety Engn ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Liu, Yingke,Zhou, Fubao,Geng, Xinze,et al. A prediction model and numerical simulation of the location of the longwall face during the highest possible failure period of gob gas ventholes[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2017,37:178-191. |
| APA | Liu, Yingke.,Zhou, Fubao.,Geng, Xinze.,Chang, Lipeng.,Kang, Jianhong.,...&Zhang, Shaofeng.(2017).A prediction model and numerical simulation of the location of the longwall face during the highest possible failure period of gob gas ventholes.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,37,178-191. |
| MLA | Liu, Yingke,et al."A prediction model and numerical simulation of the location of the longwall face during the highest possible failure period of gob gas ventholes".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 37(2017):178-191. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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