Numerical simulation and experimental study on floor failure mechanism of typical working face in thick coal seam in Chenghe mining area of Weibei, China
文献类型：期刊论文
| 作者 | Li, Ang2,4; Ma, Qiang2,4; Lian, Yanqing1,3; Ma, Li2; Mu, Qian4; Chen, Jianbo4 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2020-02-29 |
| 卷号 | 79期号:5页码:22 |
| 关键词 | Chenghe mining area No 5 coal seam Mining under safe water pressure of aquifer Floor failure depth Numerical simulation |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-020-8839-2 |
| 通讯作者 | Li, Ang(angli@xust.edu.cn) |
| 英文摘要 | The hydrogeological conditions of Weibei coalfield in China are complex; the main mining No. 5 coal seam is seriously threatened by Ordovician limestone karst water disaster at the bottom of coal measures. Chenghe No. 2 Mine is a typical example. With the increase of mining depth, confined water pressure increases year by year. To find out the law of floor deformation and failure caused by No. 5 coal seam mining in Chenghe No. 2 Coal Mine, this paper takes 24,508 working face of Chenghe No. 2 Coal Mine as engineering geological background, and carries out research by numerical simulation and field test methods. The stress field, displacement field distribution law and plastic zone evolution characteristics of No. 5 coal seam roof and floor varying with the advancing degree of mining face are obtained by simulation calculation. The progressive failure process of the whole floor stratum is reproduced dynamically, and the development height of the water conducting fracture zone of overburden is given. The maximum failure depth of the floor occurs at the mining distance of about 1.5 times the mining width, at which time "the saddle shape" supporting pressure arch reaches its maximum. At the same time, the multi-point separated layer displacement meter is used to carry out field measurements. The results show that the maximum failure depth of floor occurs in the goaf, and the maximum range of the relative displacement of the floor is 8.0-8.5 m, which is close to - 6.1 m from the coal mining surface, consistent with the results of the numerical simulation. Comprehensive analysis shows that the maximum failure depth of coal seam floor in Chenghe No. 2 Coal Mine is 8.3 m. The conclusion provides a favorable basis for the rational formulation of water disaster control countermeasures. It provides reference and experience for mining under safe water pressure of aquifuge for prevention and cure water of similar working face in Chenghe mining area in the future. |
| WOS关键词 | WATER INRUSH ; INDUCED FRACTURE ; RISK-EVALUATION ; FAULT ; MINE |
| 资助项目 | Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources[KF2018-2] ; Basic Science Research Project of Shaanxi Province[2014JM2-5064] ; National Natural Science Foundation, China[41402265] ; Basic Research Project of Shaanxi Natural Science Foundation of China[2016JM4014] ; Postdoctoral Science Foundation, China[2016M590961] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000517070500001 |
| 出版者 | SPRINGER |
| 资助机构 | Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources ; Basic Science Research Project of Shaanxi Province ; National Natural Science Foundation, China ; Basic Research Project of Shaanxi Natural Science Foundation of China ; Postdoctoral Science Foundation, China |
| 源URL | [http://ir.ieecas.cn/handle/361006/12739]  |
| 专题 | 地球环境研究所_生态环境研究室 |
| 通讯作者 | Li, Ang |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Key Lab Loess & Quaternary Geol, 97 Yanxiang Rd, Xian 710061, Shaanxi, Peoples R China 2.Minist Land & Resources, Key Lab Coal Resources Explorat & Comprehens Util, Xian 710021, Shaanxi, Peoples R China 3.Univ Illinois, Prairie Res Inst, 2204 Griffith Dr, Champaign, IL 61820 USA 4.Xian Univ Sci & Technol, Sch Architecture & Civil Engn, Xian 710054, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ang,Ma, Qiang,Lian, Yanqing,et al. Numerical simulation and experimental study on floor failure mechanism of typical working face in thick coal seam in Chenghe mining area of Weibei, China[J]. ENVIRONMENTAL EARTH SCIENCES,2020,79(5):22. |
| APA | Li, Ang,Ma, Qiang,Lian, Yanqing,Ma, Li,Mu, Qian,&Chen, Jianbo.(2020).Numerical simulation and experimental study on floor failure mechanism of typical working face in thick coal seam in Chenghe mining area of Weibei, China.ENVIRONMENTAL EARTH SCIENCES,79(5),22. |
| MLA | Li, Ang,et al."Numerical simulation and experimental study on floor failure mechanism of typical working face in thick coal seam in Chenghe mining area of Weibei, China".ENVIRONMENTAL EARTH SCIENCES 79.5(2020):22. |
入库方式： OAI收割
来源：地球环境研究所
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