破碎煤体再造矩形通道受力分析
|
摘要
为了在煤层巷道垮落后快速建立安全稳定的再生救援通道,并了解通道垮落后垮塌体的力学性质,将煤层通道垮落后破碎的煤块视为均质散粒体,通过理论分析及数值模拟,分析了在散粒体中修复新通道的基本力学特性。研究结果表明:理论分析可知,当散粒体作用在通道顶板上时,应力集中区域在顶板中部,并向两侧逐渐减小;当散粒体作用在通道两帮时,应力集中区域在两帮的底部,最大值与通道一侧的散粒体面积与截面周长的比值呈正相关;与理论分析结果相比,数值模拟分析忽略了两帮上部散粒体的影响,模拟计算所得出的应力与理论分析结果有所不同。
In order to rapidly establish a safe and stable reconstructive rescue passage after the collapse of coal seam roadway,and understand the mechanical properties of the collapse body after the collapse of passage,the fragmentized coal block after the collapse of coal seam passage was regarded as the homogeneous granular body,and the basic mechanical characteristics of repaired new passage in the granular body were analyzed through the theoretical analysis and numerical simulation.The results showed that according to the theoretical analysis,when the granular body acted on the passage roof,the stress concentration area was at the middle of roof and decreased gradually towards both sides. When the granular body acted on both sides of passage,the stress concentration area was at the bottom of both sides,and the maximum value was positively correlated with the ratio of the area of granular body at one side of passage to the sectional circumference. Compared with the results of theoretical analysis,the influence of granular body at the upside of both sides was neglected in the numerical simulation,and the stress obtained by the numerical simulation were different from the results of theoretical analysis.
In order to rapidly establish a safe and stable reconstructive rescue passage after the collapse of coal seam roadway,and understand the mechanical properties of the collapse body after the collapse of passage,the fragmentized coal block after the collapse of coal seam passage was regarded as the homogeneous granular body,and the basic mechanical characteristics of repaired new passage in the granular body were analyzed through the theoretical analysis and numerical simulation.The results showed that according to the theoretical analysis,when the granular body acted on the passage roof,the stress concentration area was at the middle of roof and decreased gradually towards both sides. When the granular body acted on both sides of passage,the stress concentration area was at the bottom of both sides,and the maximum value was positively correlated with the ratio of the area of granular body at one side of passage to the sectional circumference. Compared with the results of theoretical analysis,the influence of granular body at the upside of both sides was neglected in the numerical simulation,and the stress obtained by the numerical simulation were different from the results of theoretical analysis.
引文
[1]郝传波,张国华,胡刚,等.煤矿井下灾后救援中垮塌巷道研究的展望[J].黑龙江科技大学学报,2012,22(6):549-552.HAO Chuangbo,ZHANG Guohua,HU Gang,et al. Prospect of study on tunnel collapse during rescue following disaster in coal mines[J]. Journal of Heilongjiang University of Science and Technology,2012,22(6):549-552.
[2]郝传波,张国华,肖福坤,等.顶板节理裂隙发育条件下回采巷道的垮塌形态[J].黑龙江科技大学学报,2013,23(1):1-5.HAO Chuanbo,ZHANG Guohua,XIAO Fukun,et al. Joint fissure development conditions of extraction roadway roof collapse form study[J]. Journal of Heilongjiang University of Science and Technology,2013,23(1):1-5.
[3]郝传波,于会军,张国华,等.井下断层地质破碎带巷道堆积体垮落形态[J].黑龙江科技大学学报,2016,26(3):251-255,261.HAO Chuanbo,YU Huijun,ZHANG Guohua,et al. Caving forms of roadway deposit underground geological fault fracture zon[J]. Journal of Heilongjiang University of Science and Technology,2016,26(3):251-255,261.
[4]肖福坤,侯志远,何君,等.变角剪切下煤样力学特征及声发射特性[J].中国矿业大学学报,2018,47(4):822-829.XIAO Fukun,HOU Zhiyuan,HE Jun,et al. Mechannical characteristics and acoustic emission sharacteristics of coal samples under variable angle shear[J]. Journal of China University of Mining&Techology,2018,47(4):822-829.
[5]肖福坤,刘刚,秦涛,等.拉–压–剪应力下细砂岩和粗砂岩破裂过程声发射特性研究[J].岩石力学与工程学报,2016,35(S2):3458-3472.XIAO Fukun,LIU Gang,QIN Tao,et al. Acoustic emission characteristics of fine sandstone and coarse sandstone fracture process under tension-compression-shear stress[J]. Chinese Journal of Rock Mechanics and Engineering,2016,35(S2):3458-3472.
[6]肖福坤,刘刚,申志亮,等.循环载荷作用下煤样能量转化规律和声发射变化特征[J].岩石力学与工程学报,2016,35(10):1954-1964.XIAO Fukun,LIU Gang,SHEN Zhiliang,et al. Energy conversion and acoustic emission characteristics of coal samples under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering,2016,35(10):1954-1964.
[7]周心权,陈国新.煤矿重大瓦斯爆炸事故致因的概率分析及启示[J].煤炭学报,2008,33(1):42-46.ZHOU Xinquan,CHEN Guoxin. The probability analysis of occurrence causes of extraordinarily seriousgas explosion accidence sand its revelation[J]. Journal of China Coal Society,2008,33(1):42-46.
[8]刘晓宇,程五一,王广宇.有限元数值模拟在巷道掘进中的应用研究[J].中国安全生产科学技术,2009,5(3):158-163.LIU Xiaoyu,CHENG Wuyi,WANG Guangyu. Study on application of numerical simulation through the finite element in drifting[J].Journal of Safety Science and Technology,2009,5(3):158-163.
[9]辛亚军,安定超,李梦远,等.巷道围岩再造承载层机理及数值模拟[J].中国安全生产科学技术,2016,12(6):36-41.XIN Yajun,AN Dingchao,LI Mengyuan,et al. Mechanism and numerical simulation of renewable bearing stratum in roadway surrounding rock[J]. Journal of Safety Science and Technology,2016,12(6):36-41.
[10]李英明,贾安立,马念杰.煤巷顶板岩层赋存特征及块体梁顶板稳定性分析[J].中国安全生产科学技术,2014,10(6):51-57.LI Yingming,JIA Anli,MA Nianjie. Analysis on occurrence characteristics of roof strata in coal roadway and stability of blocks rock beam roof[J]. Journal of Safety Science and Technology,2014,10(6):51-57
[11]李英明,贾安立,马念杰.巷道多块体岩梁顶板变形破坏过程分析[J].中国安全生产科学技术,2014,10(3):5-10.LI Yingming,JIA Anli,MA Nianjie. Analysis on deformation and destruction process of multiple blocks rock beam in roadway[J].Journal of Safety Science and Technology,2014,10(3):5-10.
[12]刘腾飞,汪芸.钻探技术在煤矿事故救援中的应用分析[J].矿业安全与环保,2010,37(4):86-89.LIU Tengfei,WANG Yun. The analysis of application of drilling technology in coal mine accident rescue[J]. Mining Safety&Environmental Protection,2010,37(4):86-89.
[13]胡敬东,李学来,刘凤茹.煤矿应急救援技术研究若干新进展[J].煤矿安全,2005,36(5):36-38.HU Jingdong,LI Xuelai,LIU Fengru. Several new coal mine emergency rescue technology research progress[J]. Journal of coal mine safety,2005,36(5):36-38.
[14]李学来,胡敬东.煤矿应急救援技术的研究及应用现状[J].煤炭工程,2005(4):62-64.LI Xuelai,HU Jingdong. Research and development of coal mine emergent rescue technology in China[J]. Coal Engineering,2005(4):62-64.
[15]黄松元.散体力学[M].北京:机械工业出版社,1993.
[2]郝传波,张国华,肖福坤,等.顶板节理裂隙发育条件下回采巷道的垮塌形态[J].黑龙江科技大学学报,2013,23(1):1-5.HAO Chuanbo,ZHANG Guohua,XIAO Fukun,et al. Joint fissure development conditions of extraction roadway roof collapse form study[J]. Journal of Heilongjiang University of Science and Technology,2013,23(1):1-5.
[3]郝传波,于会军,张国华,等.井下断层地质破碎带巷道堆积体垮落形态[J].黑龙江科技大学学报,2016,26(3):251-255,261.HAO Chuanbo,YU Huijun,ZHANG Guohua,et al. Caving forms of roadway deposit underground geological fault fracture zon[J]. Journal of Heilongjiang University of Science and Technology,2016,26(3):251-255,261.
[4]肖福坤,侯志远,何君,等.变角剪切下煤样力学特征及声发射特性[J].中国矿业大学学报,2018,47(4):822-829.XIAO Fukun,HOU Zhiyuan,HE Jun,et al. Mechannical characteristics and acoustic emission sharacteristics of coal samples under variable angle shear[J]. Journal of China University of Mining&Techology,2018,47(4):822-829.
[5]肖福坤,刘刚,秦涛,等.拉–压–剪应力下细砂岩和粗砂岩破裂过程声发射特性研究[J].岩石力学与工程学报,2016,35(S2):3458-3472.XIAO Fukun,LIU Gang,QIN Tao,et al. Acoustic emission characteristics of fine sandstone and coarse sandstone fracture process under tension-compression-shear stress[J]. Chinese Journal of Rock Mechanics and Engineering,2016,35(S2):3458-3472.
[6]肖福坤,刘刚,申志亮,等.循环载荷作用下煤样能量转化规律和声发射变化特征[J].岩石力学与工程学报,2016,35(10):1954-1964.XIAO Fukun,LIU Gang,SHEN Zhiliang,et al. Energy conversion and acoustic emission characteristics of coal samples under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering,2016,35(10):1954-1964.
[7]周心权,陈国新.煤矿重大瓦斯爆炸事故致因的概率分析及启示[J].煤炭学报,2008,33(1):42-46.ZHOU Xinquan,CHEN Guoxin. The probability analysis of occurrence causes of extraordinarily seriousgas explosion accidence sand its revelation[J]. Journal of China Coal Society,2008,33(1):42-46.
[8]刘晓宇,程五一,王广宇.有限元数值模拟在巷道掘进中的应用研究[J].中国安全生产科学技术,2009,5(3):158-163.LIU Xiaoyu,CHENG Wuyi,WANG Guangyu. Study on application of numerical simulation through the finite element in drifting[J].Journal of Safety Science and Technology,2009,5(3):158-163.
[9]辛亚军,安定超,李梦远,等.巷道围岩再造承载层机理及数值模拟[J].中国安全生产科学技术,2016,12(6):36-41.XIN Yajun,AN Dingchao,LI Mengyuan,et al. Mechanism and numerical simulation of renewable bearing stratum in roadway surrounding rock[J]. Journal of Safety Science and Technology,2016,12(6):36-41.
[10]李英明,贾安立,马念杰.煤巷顶板岩层赋存特征及块体梁顶板稳定性分析[J].中国安全生产科学技术,2014,10(6):51-57.LI Yingming,JIA Anli,MA Nianjie. Analysis on occurrence characteristics of roof strata in coal roadway and stability of blocks rock beam roof[J]. Journal of Safety Science and Technology,2014,10(6):51-57
[11]李英明,贾安立,马念杰.巷道多块体岩梁顶板变形破坏过程分析[J].中国安全生产科学技术,2014,10(3):5-10.LI Yingming,JIA Anli,MA Nianjie. Analysis on deformation and destruction process of multiple blocks rock beam in roadway[J].Journal of Safety Science and Technology,2014,10(3):5-10.
[12]刘腾飞,汪芸.钻探技术在煤矿事故救援中的应用分析[J].矿业安全与环保,2010,37(4):86-89.LIU Tengfei,WANG Yun. The analysis of application of drilling technology in coal mine accident rescue[J]. Mining Safety&Environmental Protection,2010,37(4):86-89.
[13]胡敬东,李学来,刘凤茹.煤矿应急救援技术研究若干新进展[J].煤矿安全,2005,36(5):36-38.HU Jingdong,LI Xuelai,LIU Fengru. Several new coal mine emergency rescue technology research progress[J]. Journal of coal mine safety,2005,36(5):36-38.
[14]李学来,胡敬东.煤矿应急救援技术的研究及应用现状[J].煤炭工程,2005(4):62-64.LI Xuelai,HU Jingdong. Research and development of coal mine emergent rescue technology in China[J]. Coal Engineering,2005(4):62-64.
[15]黄松元.散体力学[M].北京:机械工业出版社,1993.