基于FLAC和Fluent数值模拟的煤层瓦斯运移规律研究

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英文篇名：Study on coal seam gas migration law based on FLAC and Fluent numerical simulation 作者：孙振军 英文作者：Sun Zhenjun;Juji Coal Mine,Yongcheng Coal Company,Henan Energy and Chemical Industry Group; 关键词：多孔介质 ; 瓦斯运移特征 ; 瓦斯涌出量 ; 煤体塑性区分布 ; 钻孔抽采影响范围 英文关键词：porous media;;gas migration characteristics;;gas emission;;coal plasticity distribution;;influencing range of borehole extraction 中文刊名：能源与环保 英文刊名：China Energy and Environmental Protection 机构：河南能源化工集团永煤公司车集煤矿; 出版日期：2019-10-30 08:53 出版单位：能源与环保 年：2019 期：10 语种：中文; 页：34-36+40 页数：4 CN：41-1443/TK ISSN：1003-0506 分类号：TD712.5

摘要

为了研究煤层瓦斯运移规律,确保矿井的安全生产,采用FLAC和Fluent数值模拟相结合的方法,分析了多孔介质瓦斯运移特征,研究了回采工作面瓦斯来源,主要由开采层瓦斯涌出和邻近层瓦斯涌出2部分组成,得到了煤层初始瓦斯含量与残存量的关系以及回采工作面瓦斯涌出量预测结果,模拟分析了不同钻孔直径下的周围煤体塑性区分布以及不同钻孔直径下抽采钻孔抽采影响范围。研究为实现煤与瓦斯共采提供了借鉴。
        In order to study the law of gas migration in coal seam and ensure the safe production of coal mine,the characteristics of gas migration in porous media were analyzed by means of FLAC and Fluent numerical simulation,and the gas source in mining face was studied,which mainly consists of two parts:gas emission from mining seam and gas emission from adjacent seam.The relationship between initial gas content and residual quantity of coal seam and the mining face were obtained.The prediction results of gas emission were analyzed.The distribution of plastic zone around coal body under different borehole diameters and the influence range of extraction under different borehole diameters were simulated and analyzed.The study provided a reference for realizing the co-mining of coal and gas.

引文

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