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
[1] 谭玉林.煤层群上位煤层开采瓦斯运移规律及治理研究[D].湘潭:湖南科技大学,2015.
[2] 杨社.大采高综放工作面瓦斯治理技术研究[D].邯郸:河北工程大学,2015.
[3] 范红伟.综放工作面采空区瓦斯运移规律数值模拟研究[D].太原:太原理工大学,2010.
[4] 王龙康,聂百胜,袁少飞,等.综放工作面采空区瓦斯运移规律研究及应用[J].煤炭技术,2015,34(3):171-173.Wang Longkang,Nie Baisheng,Yuan Shaofei,et al.Research and application of gas migration law in goaf of fully-mechanized top coal caving face[J].Coal Technology,2015,34(3):171-173.
[5] 成春莲,辛程鹏.U型和W型通风采空区瓦斯运移规律模拟研究[J].矿业研究与开发,2016(12):80-83.Cheng Chunlian,Xin Chengpeng.Simulation study on gas migration law in U-type and W-type ventilation goaf[J].Mining Research and Development,2016(12):80-83.
[6] 杨阳,赵耀江.基于FLUENT的“U型通风+高抽巷”瓦斯运移规律数值模拟[J].煤炭技术,2018,37(1):216-218.Yang Yang,Zhao Yaojiang.Numerical simulation of gas movement law of "U-shaped ventilation + high pumping lane" based on FLUENT[J].Coal Technology,2018,37(1):216-218.
[7] 许满贵,林海飞,潘宏宇.综采采空区瓦斯运移规律及抽采研究[J].湖南科技大学学报(自然科学版),2010,25(2):6-9.Xu Mangui,Lin Haifei,Pan Hongyu.Study on gas migration law and extraction in fully-mechanized goaf[J].Journal of Hunan University of Science & Technology(Natural Science Edition),2010,25(2):6-9.
[8] 赵楠,李增华,杨永良,等.下行通风瓦斯运移规律及瓦斯抽放技术研究[J].煤炭技术,2012,31(2):92-94.Zhao Nan,Li Zenghua,Yang Yongliang,et al.Study on gas migration process and gas extraction technology in downward ventilation[J].Coal Technology,2012,31(2):92-94.
[9] 张圣国,高明涛.回采工作面瓦斯运移规律的数值模拟研究[J].中国煤炭,2013(11):108-110.Zhang Shengguo,Gao Mingtao.Numerical simulation study on gas migration law of mining face[J].China Coal,2013(11):108-110.
[10] 胡魏魏.窄煤柱开采工作面采空区瓦斯运移规律及其防治技术研究[D].西安:西安科技大学,2015.