| 薄煤层初采期间的采场瓦斯运移规律 |
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| 引用本文： | 张锦鹏,;王伟,;孙建华,;舒彦民,;魏春荣.薄煤层初采期间的采场瓦斯运移规律[J].黑龙江科技学院学报,2014(4):348-353. |
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| 作者姓名： | 张锦鹏 ;王伟 ;孙建华 ;舒彦民 ;魏春荣 |
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| 作者单位： | [1]黑龙江科技大学安全工程学院,哈尔滨150022; [2]七台河矿业集团新立煤矿,黑龙江七台河154600 |
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| 基金项目： | 国家自然科学基金项目（51274267）;黑龙江省教育厅科学技术研究项目（11513098） |
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| 摘 要： | 针对新立煤矿90#层采煤工作面初采期间的瓦斯涌出情况,在确定采场关键参数基础上,运用数值模拟和现场实测,进行初采期间薄煤层采场瓦斯运移规律研究。结果表明:漏风主要影响采空区下部瓦斯浓度分布;采空区的瓦斯积聚区域为底板裂隙区下部和回风巷附近的裂隙区;采空区的高浓度瓦斯流出和上隅角低风速共同导致上隅角瓦斯积聚。现场实测证明了研究结论可靠。
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| 关 键 词： | 瓦斯流场 采场 薄煤层 瓦斯运移 采空区 |
Law underlying gas migration in stope of low-coal seams subjected to initial mining |
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| Institution: | ZHANG Jinpeng, WANG Wei, SUN Jianhua , SHU Yanmin, WEI Chunrong( 1. School of Safety Engineering, Heilongjiang University of Science ＆ Technology, Harbin 150022, China; 2. Xinli Coal Mine, Qitaihe Coal-Mining Group Co. Ltd., Qitaihe 154600, China) |
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| Abstract: | This paper is concerned specifically with investigating the law underlying the gas migration in stope of low-coal seams subjected to initial mining operation. The investigation builds on the targeted analysis of gas emission occurring in 90# work face of Xinli mine, the determination of key parameters on the stope, and the subsequent use of numerical simulation and field measurement. The study points to the effect of air leakage mainly on the distribution of gas concentration in lower goal; the occurrence of goal gas accumulation in the lower area of floor crack and fracture zone nearby air-return way; and the presence of gas accumulation in upper corner due to the combined interaction of high-concentration gas escaping from goaf and fresh-air flowing at a lower rate over upper corner. The field measurement verifies the reliability of the research conclusion. |
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| Keywords: | gas flow fields stope low-coal seam gas migration goal |
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