煤岩瓦斯“固-气”耦合物理模拟相似材料特性实验研究
|
摘要
在固体相似材料研究的基础上,利用"固-流"耦合相似理论,得出适用于煤岩瓦斯"固-气"耦合的相似条件。选用砂子为骨料,石蜡和油为胶结剂,研制出一种适用于开展"固-气"耦合模拟实验的材料。通过大量实验,对相似材料的抗压强度、脆性参数、渗透速率等物理力学进行了测试,并利用自行研制的渗透性测试装置,对不同含量胶结剂的相似材料试件渗透性进行了测试。结果表明,石蜡含量不断增大,材料抗压强度随之增大,渗透性逐渐减小;含油量的变化,消除了单纯使用石蜡时,材料抗压强度变化强烈的不足。合理调节二者之间的比例,可以模拟多种不同强度、不同渗透性的岩石。在力学参数满足模拟岩石的前提下,将研制出的新材料与原始的固相相似材料进行了渗流速度对比实验分析,得出所研制的材料能较大程度的降低气体在其中的渗流速度,并将该材料应用于煤层开采模型实验,有效的揭示了瓦斯渗透速率与上覆岩层运动之间的关系。
Based on the study of solid simulation material,the simulation conditions for methane and coal solid-gas coupling were obtained using solid-fluid coupling theory. Using sand as the aggregate,paraffin and oil as the cementing agent,the material suitable for solid-gas coupling simulation was proposed. A permeability testing instrument was also developed and the compressive strength,brittleness parameters and seepage velocity of material with different aggregate were tested. The results show that with the paraffin content increase,the material compressive strength increases and permeability decreases. The oil overcomes the drawback of intensive change of material compressive strength. Through setting the different ratio of aggregate to cementing agent,it can simulate rocks with different strength and permeability. Based on the mechanical parameter simulation,the permeability of solid simulated material was compared with the new material,and the results show that the new material can reduce the seepage velocity of gas in it. Applying the material to mining simulation experiment,the relationship between methane seepage velocity and overlying strata moving are revealed.
Based on the study of solid simulation material,the simulation conditions for methane and coal solid-gas coupling were obtained using solid-fluid coupling theory. Using sand as the aggregate,paraffin and oil as the cementing agent,the material suitable for solid-gas coupling simulation was proposed. A permeability testing instrument was also developed and the compressive strength,brittleness parameters and seepage velocity of material with different aggregate were tested. The results show that with the paraffin content increase,the material compressive strength increases and permeability decreases. The oil overcomes the drawback of intensive change of material compressive strength. Through setting the different ratio of aggregate to cementing agent,it can simulate rocks with different strength and permeability. Based on the mechanical parameter simulation,the permeability of solid simulated material was compared with the new material,and the results show that the new material can reduce the seepage velocity of gas in it. Applying the material to mining simulation experiment,the relationship between methane seepage velocity and overlying strata moving are revealed.
引文
[1]梁冰,孙可明,薛强.地下工程中的流-固耦合问题的探讨[J].辽宁工程技术大学学报(自然科学版),2001,20(4):120-122.Liang Bing,Sun Keming,Xue Qiang.The research of fluid-solid coupling in the ground engineering[J].Journal of Liaoning Technical University(Natural Science),2001,20(4):120-122.
[2]张杰,侯忠杰.固液耦合试验材料的研究[J].岩石力学与工程学报,2004,23(18):3157-3161.Zhang Jie,Hou Zhongjie.Experimental study of simulation materials for solid-liquid coupling[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(18):3157-3161.
[3]侯忠杰,张杰.陕北矿区开采潜水保护固液两相耦合试验及分析[J].湖南科技大学学报(自然科学版),2004,19(4):1-5.Hou Zhongjie,Zhang Jie.The solid-liquid coupling two-qhase experiment and analysis of the protection of potentiona water in northern mining area of shaanxi[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2004,19(4):1-5.
[4]胡耀青,赵阳升,杨栋.三维固流耦合相似模拟理论与方法[J].辽宁工程技术大学学报(自然科学版),2007,26(2):204-206.Hu Yaoqing,Zhao Yangsheng,Yang Dong.3D solid-liquid couping experiment study of deformation destruction of coal stope[J].Journal of Liaoning Technical University(Natural Science),2007,26(2):204-206.
[5]刘见中,张东明,袁地镜.含瓦斯煤在不同围压下的渗流特性试验[J].煤炭科学技术,2009,37(7):70-72.Liu Jianzhong,Zhang Dongming,Yuan Dijing.Vadose features test of gas content coal under different surrounding pressures[J].Coal Science and Technology,2009,37(7):70-72.
[6]黄庆享,张文忠,侯志成.固液耦合试验隔水层相似材料的研究[J].岩石力学与工程学报,2010,29(S1):2813-2818.Huang Qingxiang,Zhang Wenzhong,Hou Zhicheng.Study of simulation materials of aquifuge for solid-liquid coupling[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(S1):2813-2818.
[7]李术才,周毅,李利平,等.地下工程流-固耦合模型试验新型相似材料的研制及应用[J].岩石力学与工程学报,2012,31(6):1128-1137.Li Shucai,Zhou Yi,Li Liping,et al.Development and application of a new similar material for underground engineering fluid-solid coupling model test[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(6):1128-1137.
[8]郑少河,朱维申,王书法.承压水上采煤的固-流耦合问题研究[J].岩石力学与工程学报,2000,19(4):421-423.Zheng Shaohe,Zhu Weishen,Wang Shufa.Study on the coupling problem between flow and solid of mine in confined aquifer[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(4):421-423.
[9]Li Shugang,Xiao Peng,Pan Hongyu,et al.Experimental investigation on the seepage law of pressure-relieved gas under the influence of mining[J].Safety Science,2012,50:614-617.
[10]杨天鸿,唐春安,朱万成,等.岩石破裂过程渗流与应力耦合分析[J].岩土工程学报,2001,23(4):489-493.Yang Tianhong,Tang Chun’an,Zhu Wancheng,et al.Coupling analysis of seepage and stresses in rock failure process[J].Chinese Journal of Geotechnical Engineering,2001,23(4):489-493.
[11]李利平.高风险岩溶隧道突水灾变演化机制及其应用研究[D].济南:山东大学,2009.Li Liping.Study of catastrophe evolution mechansim of karst water inrush and its engineering application of high risk karst tunnel[D].Jinan:Shandong University,2009.
[12]赵阳升.多孔介质多场耦合作用及其工程响应[M].北京:科学出版社,2010.
[13]李树忱,冯现大,李术才,等.新型固流耦合相似材料的研制及其应用[J].岩石力学与工程学报,2010,29(2):281-288.Li Shuchen,Feng Xianda,Li Shucai,et al.Research and development of a new similar material for solid-fluid coupling and its application[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(2):281-288.
[14]潘一山,章梦涛,王来贵,等.地下硐室岩爆的相似材料模拟试验研究[J].岩土工程学报,1997,19(4):49-56.Pan Yishan,Zhang Mengtao,Wang Laigui,et al.Research on the tests of rock burst of the underground chamber simulated by similar materials[J].Chinese Journal of Geotechnical Engineering,1997,19(4):49-56.
[15]林韵梅.试验岩石力学-模拟研究[M].北京:煤炭工业出版社,1984.
[16]Li Shugang,Zhao Pengxiang,Lin Haifei,et al.Research and development of solid-gas coupling physical simulation experimental platform and its application[J].Proledia Engineering,2012,43:47-52.
[2]张杰,侯忠杰.固液耦合试验材料的研究[J].岩石力学与工程学报,2004,23(18):3157-3161.Zhang Jie,Hou Zhongjie.Experimental study of simulation materials for solid-liquid coupling[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(18):3157-3161.
[3]侯忠杰,张杰.陕北矿区开采潜水保护固液两相耦合试验及分析[J].湖南科技大学学报(自然科学版),2004,19(4):1-5.Hou Zhongjie,Zhang Jie.The solid-liquid coupling two-qhase experiment and analysis of the protection of potentiona water in northern mining area of shaanxi[J].Journal of Hunan University of Science&Technology(Natural Science Edition),2004,19(4):1-5.
[4]胡耀青,赵阳升,杨栋.三维固流耦合相似模拟理论与方法[J].辽宁工程技术大学学报(自然科学版),2007,26(2):204-206.Hu Yaoqing,Zhao Yangsheng,Yang Dong.3D solid-liquid couping experiment study of deformation destruction of coal stope[J].Journal of Liaoning Technical University(Natural Science),2007,26(2):204-206.
[5]刘见中,张东明,袁地镜.含瓦斯煤在不同围压下的渗流特性试验[J].煤炭科学技术,2009,37(7):70-72.Liu Jianzhong,Zhang Dongming,Yuan Dijing.Vadose features test of gas content coal under different surrounding pressures[J].Coal Science and Technology,2009,37(7):70-72.
[6]黄庆享,张文忠,侯志成.固液耦合试验隔水层相似材料的研究[J].岩石力学与工程学报,2010,29(S1):2813-2818.Huang Qingxiang,Zhang Wenzhong,Hou Zhicheng.Study of simulation materials of aquifuge for solid-liquid coupling[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(S1):2813-2818.
[7]李术才,周毅,李利平,等.地下工程流-固耦合模型试验新型相似材料的研制及应用[J].岩石力学与工程学报,2012,31(6):1128-1137.Li Shucai,Zhou Yi,Li Liping,et al.Development and application of a new similar material for underground engineering fluid-solid coupling model test[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(6):1128-1137.
[8]郑少河,朱维申,王书法.承压水上采煤的固-流耦合问题研究[J].岩石力学与工程学报,2000,19(4):421-423.Zheng Shaohe,Zhu Weishen,Wang Shufa.Study on the coupling problem between flow and solid of mine in confined aquifer[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(4):421-423.
[9]Li Shugang,Xiao Peng,Pan Hongyu,et al.Experimental investigation on the seepage law of pressure-relieved gas under the influence of mining[J].Safety Science,2012,50:614-617.
[10]杨天鸿,唐春安,朱万成,等.岩石破裂过程渗流与应力耦合分析[J].岩土工程学报,2001,23(4):489-493.Yang Tianhong,Tang Chun’an,Zhu Wancheng,et al.Coupling analysis of seepage and stresses in rock failure process[J].Chinese Journal of Geotechnical Engineering,2001,23(4):489-493.
[11]李利平.高风险岩溶隧道突水灾变演化机制及其应用研究[D].济南:山东大学,2009.Li Liping.Study of catastrophe evolution mechansim of karst water inrush and its engineering application of high risk karst tunnel[D].Jinan:Shandong University,2009.
[12]赵阳升.多孔介质多场耦合作用及其工程响应[M].北京:科学出版社,2010.
[13]李树忱,冯现大,李术才,等.新型固流耦合相似材料的研制及其应用[J].岩石力学与工程学报,2010,29(2):281-288.Li Shuchen,Feng Xianda,Li Shucai,et al.Research and development of a new similar material for solid-fluid coupling and its application[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(2):281-288.
[14]潘一山,章梦涛,王来贵,等.地下硐室岩爆的相似材料模拟试验研究[J].岩土工程学报,1997,19(4):49-56.Pan Yishan,Zhang Mengtao,Wang Laigui,et al.Research on the tests of rock burst of the underground chamber simulated by similar materials[J].Chinese Journal of Geotechnical Engineering,1997,19(4):49-56.
[15]林韵梅.试验岩石力学-模拟研究[M].北京:煤炭工业出版社,1984.
[16]Li Shugang,Zhao Pengxiang,Lin Haifei,et al.Research and development of solid-gas coupling physical simulation experimental platform and its application[J].Proledia Engineering,2012,43:47-52.