| 九龙牦牛肉质性状测定及肌肉蛋白质双向电泳的初步分析 |
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| 引用本文： | 郑玉才,丁一,金素钰,黄林.九龙牦牛肉质性状测定及肌肉蛋白质双向电泳的初步分析[J].湖南科技大学学报(自然科学版),2017,43(1):1-6. |
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| 作者姓名： | 郑玉才 丁一 金素钰 黄林 |
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| 作者单位： | 湖南科技大学 资源环境与安全工程学院，湖南 湘潭 411201 |
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| 基金项目： | 国家自然科学基金资助项目(51474104) |
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| 摘 要： | 针对漳村煤矿2502工作面X_(12)陷落柱情况,本文运用FLAC~(3D)数值软件模拟对工作面推进过程中陷落柱变形及煤层中应力变化情况进行了研究,研究结果表明:随着开采的进行,逐渐出现了较明显的应力集中现象.在过陷落柱期间,工作面顶板的破坏范围大约在54 m,而底板的破坏范围大约在22 m.开采到距陷落柱35 m时,采动作用对陷落柱开始作用.对过X_(12)陷落柱进行可行性分析得出,采用采煤机截割与放炮破碎相结合的方式强行通过.工程实践表明,该方案保证了工作面的连续推进,不仅有效地控制了陷落柱对生产的影响,提高了煤炭资源的回收率,而且能为以后的工作面过陷落柱提供技术指导.
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| 关 键 词： | 陷落柱 数值模拟 爆破采煤 工程实践 |
| 收稿时间： | 2016/11/9 0:00:00 |
| 修稿时间： | 2016/11/9 0:00:00 |
Analysis of meat traits of Jiulong yak and primary study of muscle proteins by two-dimensional electrophoresis |
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| ZHENG Yu-cai,DING Yi,JIN Su-yu and HUANG Lin.Analysis of meat traits of Jiulong yak and primary study of muscle proteins by two-dimensional electrophoresis[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2017,43(1):1-6. |
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| Authors: | ZHENG Yu-cai DING Yi JIN Su-yu and HUANG Lin |
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| Affiliation: | School of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201,China |
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| Abstract: | Aiming at the condition, the collapse column of working face x12 of Zhangcun Coal Mine 2502, by using the FLAC3D numerical software, the collapse column deformation in coal seam was simulated, and stress change in the advancing process of working face was studied, the results show that, in the wake of the mining, it is obvious that the gradual emergence of stress concentration phenomenon. During the collapse column, damage range of roof of working face is about 54 m, and the footwall is about 22 m. From mining to collapse column 35 m, which affected by mining action at the same time. It deduced that the combination of coal mining machine cutting blasting and crushing could force a passage, when carry on the feasibility analysis to it. The engineering practice indicates that the project guarantees the continuous advancing working face, not only effectively control the influence of the collapsing column on the production, improve the recovery percent of coal resources, but also provide relevant technical guidance for the collapse column working face in later as well. |
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| Keywords: | collapse column numerical simulation blasting mining engineering practice |
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