Research on the Reasonable Width of the Waterproof Coal Pillar during the Mining of a Shallow Coal Seam Located Close to a Reservoir
文献类型：期刊论文
| 作者 | Hu, Mengling3; Zhao, Wenlong3; Lu, Zheng2; Ren, Jianxi3; Miao, Yanping1 |
| 刊名 | ADVANCES IN CIVIL ENGINEERING
 |
| 出版日期 | 2019-12-16 |
| 卷号 | 2019期号:-页码:14 |
| ISSN号 | 1687-8086 |
| DOI | 10.1155/2019/3532784 |
| 英文摘要 | Retaining a waterproof coal pillar is the most effective water conservation method for coal seam mining close to a reservoir, and determining a reasonable width for the waterproof coal pillar has been a common problem among mining scholars for a considerably long time. In case of mining a 4(-2) coal seam close to the Changjiagou Reservoir in the Zhangjiamao mine, the research methods of theoretical analysis, physical simulation using similar materials, and numerical simulation have been adopted to analyze the overburden strata mining failure features and the surface subsidence law. Additionally, the influences of the width of the coal pillar on the reservoir bank slope stability have been investigated. The results denote that a coal pillar can be divided into a mine-pressure-influenced zone, an effective waterproof zone, and a water-level-influenced zone with respect to water resistance. Furthermore, the width of the waterproof coal pillar was determined to be 107.41 m by theoretical analysis. The simulation test indicated that when the working face advanced close to the reservoir, the reservoir bank exhibited vertical downward as well as transverse abscission layer fractures and the divided topsoil slipped toward the reservoir. Subsequently, the judgment conditions required for determining the critical width of the waterproof coal pillar were proposed based on the requirements to prevent the reservoir bank slope from instability failure and the water gushing accident in goaf. The maximum width of the waterproof coal pillar when the top point on the slope surface experienced reverse horizontal displacement and several key points produced sharp vertical displacements or when the pore pressure in the coal seam roof and floor suddenly became 0 was considered to be the critical width. Furthermore, the critical width was determined to be 96 m via simulation analysis, verifying the rationality of the theoretical method. These results could provide a theoretical basis for determining the width of the waterproof coal pillar of the coal seam located close to a reservoir. |
| 资助项目 | National Natural Science Foundation of China[41702346] ; National Natural Science Foundation of China[11872299] ; Research Fund of Shaanxi Education Department[17JK0502] ; Cultivation Fund of Xi'an University of Science and Technology[201729] |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000522039500002 |
| 出版者 | HINDAWI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/23855]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Shenmu Hongliulin Min Co Ltd, Shaanxi Coal Ind Grp, Xian 719300, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Xian Univ Sci & Technol, Sch Architecture & Civil Engn, Xian 710054, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Mengling,Zhao, Wenlong,Lu, Zheng,et al. Research on the Reasonable Width of the Waterproof Coal Pillar during the Mining of a Shallow Coal Seam Located Close to a Reservoir[J]. ADVANCES IN CIVIL ENGINEERING,2019,2019(-):14. |
| APA | Hu, Mengling,Zhao, Wenlong,Lu, Zheng,Ren, Jianxi,&Miao, Yanping.(2019).Research on the Reasonable Width of the Waterproof Coal Pillar during the Mining of a Shallow Coal Seam Located Close to a Reservoir.ADVANCES IN CIVIL ENGINEERING,2019(-),14. |
| MLA | Hu, Mengling,et al."Research on the Reasonable Width of the Waterproof Coal Pillar during the Mining of a Shallow Coal Seam Located Close to a Reservoir".ADVANCES IN CIVIL ENGINEERING 2019.-(2019):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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