Comprehensive analysis of safe mining to heavy and steep coal seam under complex geophysics environment

Journal of Coal Science and Engineering (China) - 2008
Ning-bo Wang1,2,3, Li-bo Li1,2, Xing-ping Lai2,1, Xin Chai1,2
1Key Laboratory of Western Mine & Hazard Prevention, China Ministry of Education, Xi’an, China
2School of Energy and Resource, Xi’an University of Science and Technology, Xi’an, China
3Shenhua Xinjiang Energy Co., Ltd., Wulumuqi, China

Tóm tắt

In virtue of effect of N-S intensive ground stress and mining disturbance to +579E2EB1+2 mining site at Weihuliang Mine, the dip angle and section height is 65° and 52 m, respectively, the collapses happed frequently during mining. Firstly, mining conditions, spatial structure and parameters were investigated. Then physical simulation and dynamic numerical tracing and elaborate simulation relating roof and top-coal were applied based on 2D-Block Program and quantitative regularity of stress at variable depths had been estimated. Furthermore, it was manifested that effective measures, i.e., fast mining, control symmetrical top-coal-caving at dip and strike directions, optimizing ventilation system, active-stereo preventing gas were performed successfully in mining practice. Ultimately, the derived dynamic hazard were prevented so as to safety mining.

Từ khóa


Tài liệu tham khảo

神华新疆能源有限责任公司, 西安科技大学. 苇湖梁煤矿+579E2EB1+2急倾斜煤层顶煤松动范围与钻孔窥视探测及综合分析[R]. 2007. Shenhua Xinjiang Coal Group Co. Ltd., Xi’an University of Science & Technology. Detcting and comprehensive analysis on loose circle and borehole camera in steep seam of +579E2EB1+2 Weihuliang Coal Mine[R]. 2007.

王 宁波. 合理提高急倾斜综放工作面水平分段高度的探讨[J]. 西部探矿工程, 2007(10): 149–153. Wang Ningbo. Discussion on the approprivate height of horizontal section in steep fully-mechanized extracting and caving faces[J]. West-China Exploration Engineering, 2007(10): 149–153.

石 平五, 张 幼振. 急斜煤层放顶煤开采“跨层拱”结构分析[J]. 岩石力学与工程学报, 2006, 25(1): 79–82. Shi Pingwu, Zhang Youzhen. Structual analysis of arch of spanning strata of top coal caving in steep seam[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(1): 79–82.

高 召宁, 石 平五. 急倾斜水平分段放顶煤开采岩移规律[J]. 西安科技学院学报, 2001, 21(4): 316–318. Gao Zhaoning, Shi Pingwu. Rock movement law of horizontal section top coal caving in steep seam[J]. Journal of Xi’an University of Science & Technology, 2001, 21(4): 316–318.

邵 小平, 石 平五, 贺 桂成. 急斜放顶煤开采顶板卸载拱结构分析[J]. 北京科技大学学报, 2007, 29(5): 447–451. Shao Xiaoping, Shi Pingwu, He Guicheng. Analysis on unloaded arch structure of roof in mining steep seams using horizontal section top coal caving[J]. Journal of University of Science and Technology Beijing, 2007, 29(5): 447–451.

张 立杰, 蔡 美峰, 来 兴平, 等. 基于AE的深部复变环境下急斜特厚煤层开采动力失稳分析[J]. 北京科技大学学报, 2007, 29(1): 1–4. Zhang Lijie, Cai Meifeng, Lai Xingping, et al. Dynamical destabilization analysis of steep and heavy thick coal seam in a deep-mine under the complex-variable environment based on AE[J]. Journal of University of Science and Technology Beijing, 2007, 29(1): 1–4.

来 兴平. 西部矿山大尺度采空区衍生动力灾害控制[J]. 北京科技大学学报, 2004, 26(1): 1–4. Lai Xingping. Derived dynamic disasters of large scale mined-out area for west coal mines[J]. Journal of University of Science and Technology Beijing, 2004, 26(1): 1–4.

Thông tin
Thông tin xuất bản

Journal of Coal Science and Engineering (China)

Thông tin tác giả