“一进两回”工作面通风系统瓦斯运移规律研究
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摘要
经理论分析、计算模拟参数,通过计算机模拟和相似材料实验分别研究基础的U型通风、“一进两回”Y型、“一进两回”U+L型、“一进两回”U+G型即U型加上采空区裂隙带高位瓦斯回风巷(常说的高位瓦斯抽放巷道)采空区的瓦斯浓度分布、瓦斯运移规律。
通过理论分析并联系实际,以沙曲矿14205综采面采空区数据,描述了采空区形态,计算对比确定了采空区“竖三带”的高度和“横三区”的长度;分析采空区瓦斯涌出的影响因素,并对各部分的瓦斯涌出进行了预测;由采空区多孔非均匀各向异性介质,研究了瓦斯的运移的机理,并研究计算瓦斯在此介质中运移时决定的因素:瓦斯各部分的涌出源、孔隙率、粘性阻力系数,确定了瓦斯和风流流动的微分方程。
建立综采面瓦斯运移的几何模拟图和模拟参数表,使模拟更接近实际引入工作面瓦斯涌出数据,对U型通风、“一进两回”Y型、“一进两回”U+L型、“一进两回”U+G型即U型加上采空区裂隙带高位瓦斯回风巷道时采空区瓦斯运移用FLUENT进行数值模拟,得到不同的能较真实反应实际流动状态的瓦斯浓度、瓦斯运移图,并通过图中各方向瓦斯浓度数据的导出及整理作表,更进一步说明分析说明“一进两回”工作面通风系统采空区瓦斯浓度分布及运移规律。
对数值模拟的各通风系统做相似材料实验,用各色烟雾弹放出的气体作为示踪气体实验并拍下气体流动过程图,并与计算机模拟效果图相比,结合实践,结论基本一致。
本文所做的以上工作,使对常见的“一进两回”巷道布置的通风系统下采空区瓦斯流动有了更具体的认识,在实际生产中有一定的应用参考价值。
This paper has studied gob gas concentration, gas migration law based on U-ventilation, "one intakes two reture" Y-type, "one intakes two reture" U + L-type, "one intakes two reture" U + G model that is U and gob fracture zone with high gas return airway (often talk about high gas drainage tunnel), after theoretical analysis, computer simulation parameters, and computer simulation and similar experiments.
Through theoretical analysis and practice, as Shaqu 14205 mechanized mining Gob of data, described the form of mined-out area, determined mined-out area "vertical three-zone" height and "horizontal three-zone" length; described the Gas Emission Factors of the fully mechanized mining face and Gob , and carried out various parts of the prediction of gas emission; from mined-out area of non-homogeneous anisotropic porous media to study the mechanism of gas migration,studied the decisive factor of gas transport in this medium: Gas pouring the various parts of the source, porosity, viscous drag coefficient to determine the flow of gas and airflow differential equations.
Established a fully mechanized coal mining face of the geometric simulation of gas transport maps and simulation parameter table, in order to simulate realistic and boldly, it simulated using FLUENT for U-ventilation, "one intakes two reture" Y-type, "one intakes two reture" U + L-type, "one intakes two reture" U + G model that is U and gob fracture zone with high gas return airway (often talk about high gas drainage tunnel), got different than the real response to the actual state of the gas concentration flow、gas migration law chart and graph in all directions through the gas concentration data for export and sorting table, more specific shows the "one intakes two reture" face ventilation systems that gas concentration distribution and migration law.
Through the similar material experiments about the numerical simulation of the ventilation systems, using colored smoke bomb which released the gas as a tracer gas to conduct the experiment and photographed the gas flow diagrams, compared the computer simulation of the map and the actual experiments, found the conclusions are basically the same.
This more than done, we had a more specific understanding of "one intakes two reture" face ventilation systems gob gas flow, and had a certain reference value In actual production.
通过理论分析并联系实际,以沙曲矿14205综采面采空区数据,描述了采空区形态,计算对比确定了采空区“竖三带”的高度和“横三区”的长度;分析采空区瓦斯涌出的影响因素,并对各部分的瓦斯涌出进行了预测;由采空区多孔非均匀各向异性介质,研究了瓦斯的运移的机理,并研究计算瓦斯在此介质中运移时决定的因素:瓦斯各部分的涌出源、孔隙率、粘性阻力系数,确定了瓦斯和风流流动的微分方程。
建立综采面瓦斯运移的几何模拟图和模拟参数表,使模拟更接近实际引入工作面瓦斯涌出数据,对U型通风、“一进两回”Y型、“一进两回”U+L型、“一进两回”U+G型即U型加上采空区裂隙带高位瓦斯回风巷道时采空区瓦斯运移用FLUENT进行数值模拟,得到不同的能较真实反应实际流动状态的瓦斯浓度、瓦斯运移图,并通过图中各方向瓦斯浓度数据的导出及整理作表,更进一步说明分析说明“一进两回”工作面通风系统采空区瓦斯浓度分布及运移规律。
对数值模拟的各通风系统做相似材料实验,用各色烟雾弹放出的气体作为示踪气体实验并拍下气体流动过程图,并与计算机模拟效果图相比,结合实践,结论基本一致。
本文所做的以上工作,使对常见的“一进两回”巷道布置的通风系统下采空区瓦斯流动有了更具体的认识,在实际生产中有一定的应用参考价值。
This paper has studied gob gas concentration, gas migration law based on U-ventilation, "one intakes two reture" Y-type, "one intakes two reture" U + L-type, "one intakes two reture" U + G model that is U and gob fracture zone with high gas return airway (often talk about high gas drainage tunnel), after theoretical analysis, computer simulation parameters, and computer simulation and similar experiments.
Through theoretical analysis and practice, as Shaqu 14205 mechanized mining Gob of data, described the form of mined-out area, determined mined-out area "vertical three-zone" height and "horizontal three-zone" length; described the Gas Emission Factors of the fully mechanized mining face and Gob , and carried out various parts of the prediction of gas emission; from mined-out area of non-homogeneous anisotropic porous media to study the mechanism of gas migration,studied the decisive factor of gas transport in this medium: Gas pouring the various parts of the source, porosity, viscous drag coefficient to determine the flow of gas and airflow differential equations.
Established a fully mechanized coal mining face of the geometric simulation of gas transport maps and simulation parameter table, in order to simulate realistic and boldly, it simulated using FLUENT for U-ventilation, "one intakes two reture" Y-type, "one intakes two reture" U + L-type, "one intakes two reture" U + G model that is U and gob fracture zone with high gas return airway (often talk about high gas drainage tunnel), got different than the real response to the actual state of the gas concentration flow、gas migration law chart and graph in all directions through the gas concentration data for export and sorting table, more specific shows the "one intakes two reture" face ventilation systems that gas concentration distribution and migration law.
Through the similar material experiments about the numerical simulation of the ventilation systems, using colored smoke bomb which released the gas as a tracer gas to conduct the experiment and photographed the gas flow diagrams, compared the computer simulation of the map and the actual experiments, found the conclusions are basically the same.
This more than done, we had a more specific understanding of "one intakes two reture" face ventilation systems gob gas flow, and had a certain reference value In actual production.
引文
[1] Darcy H Les Fontaines Publique de la Ville de Dijon 1856
[2] LEVINE J R Model study of the influence of matrix shrinkage on absolute permeability of coalbed reservoirs 1996
[3]周世宁,林柏泉.煤层瓦斯赋存与流动理论.北京:煤炭工业出版社,1998
[4]孙培德.煤层瓦斯流动理论及其应用.中国煤炭学会1988年学术年会论文集.北京:煤炭工业出版,1988.
[5]何学秋.煤巷瓦斯涌出规律及其连续积分模型.煤炭工程师1994(1):2227.
[6]Sun Peide.Study of the dynamic models for coal gas dynamics(part1).M in.Sci.Technol1991,12(1):17～25.
[7]郑哲敏.从数量级和量纲分析看煤与瓦斯突出的机理.力学与生产建设.北京:北京大学出版社,1982.
[8]黄运飞,孙广忠.煤与瓦斯介质力学.北京:煤炭出版社,1993.
[9]罗新荣:可压密煤层瓦斯运移方程与数值模拟研究,中国安全科学学报,1998,8(5): 19～23.
[10]余楚新.煤层中瓦斯富集、运移的基础与应用研究重庆:重庆大学,1993.
[11]孔样言.高等渗流力学[M].中国科学技术大学出版社,1999.
[12]普朗特等著,郭永怀,陆士嘉译.流体力学概论[M].科学出版社,1986.
[13]王佑安,朴春杰;用煤解吸瓦斯速度法井下测定煤层瓦斯含量的初步研究[J].煤矿安全;1981(11):1～3
[14]杨其銮,王佑安.煤屑瓦斯扩散理论及其应用.煤炭学报,1986,11(3):62～70.
[15]聂百胜,何学秋,王思元.瓦斯气体在煤孔隙中的扩散模式[J].矿业安全与环保,2000,27(6):14～17.
[16]何学秋,聂百胜.孔隙气体在煤层中扩散的机理[J].中国矿业大学学报,2001,30(1):24～28.
[17]吴世跃,郭勇义.煤粒瓦斯扩散规律与突出预测指标的研究.太原理工大学学报,1998(2):138～142.
[18] A·Saghafi R·J·Willams煤层瓦斯流动的计算机模拟及其在预测瓦斯涌出和抽放瓦斯的应用《煤矿安全》1988(4)15～17
[19]孙培德。煤层瓦斯流场流动规律的研究。煤炭学报,1987(4):76～84
[20]段三明聂百胜煤层瓦斯扩散-渗流规律的初步研究太原理工大学学报1998,29(4)413～416
[21]吴世跃;郭勇义;煤层气运移特征的研究煤炭学报1999(1)65～69.
[22]马大勋.关于在采煤工作面前方应力再分布区抽放瓦斯的可行性及适用范围.煤矿安全, 1996,(2):13～18.
[23]SUN Peide. Study of the dynamic models for coal gas dynamics (part 1)[J]. Min.Sci.Technol. 1991, 12(1): 17-25.
[24]SOMERTON W H. Effect of stress on permeability of coal [J]. Int. J. Rock Meck. Mech. Min. Sci. & Georaech.Abstr.,. 1975, 12 (2): 151-158.
[25] ENEVER J R E, HENNING A. The relationship between permeability and effective stress for australian coal and its implications with respect to coalbcd methane exploration and reservoir modelling[C]//Proceedings of the 1997 International Coalbed Methane Symposium.Alabama: The University of Alabama Tuscaloosa, 1997: 13-22.
[26]谭学术,肖勤学,吴泽源.上解放层解放范围的力学分析.煤炭学报,1988,13(2):25～31.
[27]孙培德,鲜学福.煤层气越流的固气耦合理论及其应用.煤炭学报,1999,24 (1):60～64.
[28]孙培德.煤层气越流固气耦合数学模型的SIP分析.煤炭学报2002(5):494～499.
[29]孙可明,梁冰,王锦山;煤层气开采中两相流阶段的流固耦合渗流[J];辽宁工程技术大学学报(自然科学版);2001年01期.
[30] HAO Yangsheng, KANG Tianhe, HU Yaoqing. The permeability classification of coal seam in China[J].Int.J.Rock Mech. Min. Sci.1995, 32(4): 365-369.
[31]刘建军.煤层气-水两相流固耦合渗流的数学模型.武汉工业学院:硕士学位论文.
[32]李树刚.综放开采围岩活动与瓦斯运移.徐州:中国矿业大学出版社,2000.
[33]LEI Wen-jie Numerical analysis of coal-gas flow and pressure relief on the mining method of extreme short-range protective strata [期刊论文] -煤炭学报(英文版)2008(1)
[34]Ren T X.Edwards J S.David J Simulation of methane drainage boreholes using computational fluid dynamics .1999.
[35]Spaid M A A.Phelan F R J Lattice Boltzmann methods for modeling microscale flow in fibrous porous media .1997.
[36]王福厚.高位钻孔抽放瓦斯冒落带及裂隙带高度确定方法.煤炭技术:2008(8)75～76.
[37]沙曲矿瓦斯治理报告.太原理工大学.
[38]杨勇,王乔文.浅析影响矿井瓦斯涌出的因素.内蒙古科学研究所:中国安全天地网.
[39]波鲁巴林诺娃-柯钦娜.在多孔介质中的液体渗透理论.北京:科学出版社, 1955.
[40]仵彦卿.多孔介质污染物迁移动力学.上海:上海交通大学出版社,2007.
[41]李诚玉,周西华,张丽丽,李昕.采空区瓦斯运移的数学模型.矿业快报:2007(8)17～19.
[42]于勇.FLUENT入门与进阶教程.北京:北京理工大学出版社,2008.
[43]张国枢.通风安全学[M].徐州:中国矿业大学出版社,2006.
[44]贾宝财,刘振宇.U型通风方式采煤工作面上隅角瓦斯处理方法.煤炭技术:2008,27(5)88～90.
[45]焦长军.高抽巷瓦斯抽采实践与探索.煤炭技术,2008,27(9):83～84.
[46]徐维彬,汪有清.张集矿综采面高抽巷抽放瓦斯技术应用.山东煤炭科技:2007,4:5～6.
[47]林韵梅.实验岩石力学模拟研究[M].北京:煤炭工业出版社,1984
[2] LEVINE J R Model study of the influence of matrix shrinkage on absolute permeability of coalbed reservoirs 1996
[3]周世宁,林柏泉.煤层瓦斯赋存与流动理论.北京:煤炭工业出版社,1998
[4]孙培德.煤层瓦斯流动理论及其应用.中国煤炭学会1988年学术年会论文集.北京:煤炭工业出版,1988.
[5]何学秋.煤巷瓦斯涌出规律及其连续积分模型.煤炭工程师1994(1):2227.
[6]Sun Peide.Study of the dynamic models for coal gas dynamics(part1).M in.Sci.Technol1991,12(1):17～25.
[7]郑哲敏.从数量级和量纲分析看煤与瓦斯突出的机理.力学与生产建设.北京:北京大学出版社,1982.
[8]黄运飞,孙广忠.煤与瓦斯介质力学.北京:煤炭出版社,1993.
[9]罗新荣:可压密煤层瓦斯运移方程与数值模拟研究,中国安全科学学报,1998,8(5): 19～23.
[10]余楚新.煤层中瓦斯富集、运移的基础与应用研究重庆:重庆大学,1993.
[11]孔样言.高等渗流力学[M].中国科学技术大学出版社,1999.
[12]普朗特等著,郭永怀,陆士嘉译.流体力学概论[M].科学出版社,1986.
[13]王佑安,朴春杰;用煤解吸瓦斯速度法井下测定煤层瓦斯含量的初步研究[J].煤矿安全;1981(11):1～3
[14]杨其銮,王佑安.煤屑瓦斯扩散理论及其应用.煤炭学报,1986,11(3):62～70.
[15]聂百胜,何学秋,王思元.瓦斯气体在煤孔隙中的扩散模式[J].矿业安全与环保,2000,27(6):14～17.
[16]何学秋,聂百胜.孔隙气体在煤层中扩散的机理[J].中国矿业大学学报,2001,30(1):24～28.
[17]吴世跃,郭勇义.煤粒瓦斯扩散规律与突出预测指标的研究.太原理工大学学报,1998(2):138～142.
[18] A·Saghafi R·J·Willams煤层瓦斯流动的计算机模拟及其在预测瓦斯涌出和抽放瓦斯的应用《煤矿安全》1988(4)15～17
[19]孙培德。煤层瓦斯流场流动规律的研究。煤炭学报,1987(4):76～84
[20]段三明聂百胜煤层瓦斯扩散-渗流规律的初步研究太原理工大学学报1998,29(4)413～416
[21]吴世跃;郭勇义;煤层气运移特征的研究煤炭学报1999(1)65～69.
[22]马大勋.关于在采煤工作面前方应力再分布区抽放瓦斯的可行性及适用范围.煤矿安全, 1996,(2):13～18.
[23]SUN Peide. Study of the dynamic models for coal gas dynamics (part 1)[J]. Min.Sci.Technol. 1991, 12(1): 17-25.
[24]SOMERTON W H. Effect of stress on permeability of coal [J]. Int. J. Rock Meck. Mech. Min. Sci. & Georaech.Abstr.,. 1975, 12 (2): 151-158.
[25] ENEVER J R E, HENNING A. The relationship between permeability and effective stress for australian coal and its implications with respect to coalbcd methane exploration and reservoir modelling[C]//Proceedings of the 1997 International Coalbed Methane Symposium.Alabama: The University of Alabama Tuscaloosa, 1997: 13-22.
[26]谭学术,肖勤学,吴泽源.上解放层解放范围的力学分析.煤炭学报,1988,13(2):25～31.
[27]孙培德,鲜学福.煤层气越流的固气耦合理论及其应用.煤炭学报,1999,24 (1):60～64.
[28]孙培德.煤层气越流固气耦合数学模型的SIP分析.煤炭学报2002(5):494～499.
[29]孙可明,梁冰,王锦山;煤层气开采中两相流阶段的流固耦合渗流[J];辽宁工程技术大学学报(自然科学版);2001年01期.
[30] HAO Yangsheng, KANG Tianhe, HU Yaoqing. The permeability classification of coal seam in China[J].Int.J.Rock Mech. Min. Sci.1995, 32(4): 365-369.
[31]刘建军.煤层气-水两相流固耦合渗流的数学模型.武汉工业学院:硕士学位论文.
[32]李树刚.综放开采围岩活动与瓦斯运移.徐州:中国矿业大学出版社,2000.
[33]LEI Wen-jie Numerical analysis of coal-gas flow and pressure relief on the mining method of extreme short-range protective strata [期刊论文] -煤炭学报(英文版)2008(1)
[34]Ren T X.Edwards J S.David J Simulation of methane drainage boreholes using computational fluid dynamics .1999.
[35]Spaid M A A.Phelan F R J Lattice Boltzmann methods for modeling microscale flow in fibrous porous media .1997.
[36]王福厚.高位钻孔抽放瓦斯冒落带及裂隙带高度确定方法.煤炭技术:2008(8)75～76.
[37]沙曲矿瓦斯治理报告.太原理工大学.
[38]杨勇,王乔文.浅析影响矿井瓦斯涌出的因素.内蒙古科学研究所:中国安全天地网.
[39]波鲁巴林诺娃-柯钦娜.在多孔介质中的液体渗透理论.北京:科学出版社, 1955.
[40]仵彦卿.多孔介质污染物迁移动力学.上海:上海交通大学出版社,2007.
[41]李诚玉,周西华,张丽丽,李昕.采空区瓦斯运移的数学模型.矿业快报:2007(8)17～19.
[42]于勇.FLUENT入门与进阶教程.北京:北京理工大学出版社,2008.
[43]张国枢.通风安全学[M].徐州:中国矿业大学出版社,2006.
[44]贾宝财,刘振宇.U型通风方式采煤工作面上隅角瓦斯处理方法.煤炭技术:2008,27(5)88～90.
[45]焦长军.高抽巷瓦斯抽采实践与探索.煤炭技术,2008,27(9):83～84.
[46]徐维彬,汪有清.张集矿综采面高抽巷抽放瓦斯技术应用.山东煤炭科技:2007,4:5～6.
[47]林韵梅.实验岩石力学模拟研究[M].北京:煤炭工业出版社,1984