基于球颗粒DDA法的巷道围岩破坏特征分析应用初探
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摘要
非连续变形分析法(DDA)在岩土工程问题分析中应用广泛。基于球颗粒DDA法的计算原理,以小屯煤矿运输巷道为研究对象,模拟了煤矿巷道顶板裂隙发育、贯通直至破坏的全过程,结果表明:球颗粒DDA法再现的巷道顶部裂隙产生-扩展-破坏特征,与实际裂隙带发育情况吻合,球颗粒DDA在巷道围岩稳定性分析方面具有应用价值。本文研究成果对非连续变形分析方法的应用扩展具有重要意义。
The discontinuous deformation analysis method(DDA)has been widely applied in geotechnical engineering analysis.Based on the calculation principle of spherical particle DDA method,the whole process of roof crack development,penetration and failure in Xiaotun coal mine is simulated.The results show that the characteristics of roof crack generation-propagation-failure reproduced by spherical particle DDA method coincide with the actual development of fracture zone.Spherical particle DDA has practical value in the stability analysis of surrounding rock of roadway.The research results in this paper are of great significance for the extension of the application of discontinuous deformation analysis methods.
The discontinuous deformation analysis method(DDA)has been widely applied in geotechnical engineering analysis.Based on the calculation principle of spherical particle DDA method,the whole process of roof crack development,penetration and failure in Xiaotun coal mine is simulated.The results show that the characteristics of roof crack generation-propagation-failure reproduced by spherical particle DDA method coincide with the actual development of fracture zone.Spherical particle DDA has practical value in the stability analysis of surrounding rock of roadway.The research results in this paper are of great significance for the extension of the application of discontinuous deformation analysis methods.
引文
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[19]鞠杨,左建平,宋振铎,等.煤矿开采中的岩层应力分布与变形移动的DDA模拟[J].岩土工程学报,2007,29(2):268-273.JU Yang,ZUO Jianping,SONG Zhenduo,et al.Numerical simulation of stress distribution and displacement of rock strata of coal mines by means of DDA method[J].Chinese Journal of Geotechnical Engineering,2007,29(2):268-273.
[20] ZHAO Shilong.Development of three dimensional spherical discontinuous deformation analysis for granular materials[D].Raleigh:North Carolina State University,2000.
[2]缪协兴,钱鸣高.中国煤炭资源绿色开采研究现状与展望[J].采矿与安全工程学报,2009,26(1):1-14.MIAO Xiexing,QIAN Minggao.Research on green mining of coal resources in China:current status and future prospects[J].Journal of Mining&Safety Engineering,2009,26(1):1-14.
[3]杨仁树,朱衍利,吴宝杨,等.大倾角松软厚煤层巷道优化设计及数值分析[J].中国矿业,2010,19(9):73-77.YANG Renshu,ZHU Yanli,WU Baoyang,et al.Numerical analysis and optimization design of large angle soft thick coal seam roadway[J].China Mining Magazine,2010,19(9):73-77.
[4]王启耀,蒋臻蔚,杨林德.层状岩体巷道弯曲变形的有限元模拟[J].岩土力学,2006,27(7):1101-1104.WANG Qiyao,JIANG Zhenwei,YANG Linde.Numerical modeling of flexural deformation of laneway in layered rock mass[J].Rock and Soil Mechanics,2006,27(7):1101-1104.
[5]祁瑞清,唐万军,谢飞鸿,等.锚杆支护对层状岩层巷道作用的二维有限元分析[J].中国矿业,2009,18(4):78-81.QI Ruiqing,TANG Wanjun,XIE Feihong,et al.Two-dimension finite element analysis of the function of bolts supporting on layered rock tunnel[J].China Mining Magazine,2009,18(4):78-81.
[6]方刚,杨圣奇,孙建中,等.深部厚煤层巷道失稳破裂演化过程离散元模拟研究[J].采矿与安全工程学报,2016,33(4):676-683.FANG Gang,YANG Shengqi,SUN Jianzhong,et al.Study on instability fracture evolution of deep thick coal seams based on discrete element simulation[J].Journal of Mining&Safety Engineering,2016,33(4):676-683.
[7] SHI G H.Discontinuous deformation analysis:a new numerical model for the statics and dynamics of block systems[D].Berkeley:University of California,1988.
[8]石根华,裴觉民.数值流形方法与非连续变形分析[M].北京:清华大学出版社,1997.
[9]邬爱清,丁秀丽,李会中,等.非连续变形分析法模拟千将坪滑坡启动与滑坡全过程[J].岩石力学与工程学报,2006,25(7):1297-1303.WU Aiqing,DING Xiuli,LI Huizhong,et al.Numerical simulation of startup and whole failure process of Qianjiangping landslide using discontinuous deformation analysis method[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(7):1297-1303.
[10]邬爱清,丁秀丽,陈胜宏,等.DDA方法在复杂地质条件下地下厂房围岩变形与破坏特征分析中的应用研究[J].岩石力学与工程学报,2006,25(1):1-8.WU Aiqing,DING Xiuli,CHEN Shenghong,et al.Research on deformation and failure characteristics of an underground powerhouse with complicated geological conditions by DDA method[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(1):1-8.
[11]吴建宏,大西有三,石根华,等.三维非连续变形分析(3D DDA)理论及其在岩石边坡失稳数值仿真中的应用[J].岩石力学与工程学报,2003,22(6):937-942.WU Jianhong,OHNISHI Yuzo,SHI Genhua,et al.Three dimensional discontinuous deformation analysis(3DDDA)and its application to the rock slope toppling[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(6):937-942.
[12]甯尤军,杨军,陈鹏万.节理岩体爆破的DDA方法模拟[J].岩土力学,2010,31(7):2259-2263.NING Youjun,YANG Jun,CHEN Pengwan.Numerical simulation of rock blasting in jointed rock mass by DDA method[J].Rock and Soil Mechanics,2010,31(7):2259-2263.
[13]张开,朱敏,张建强,等.深部软岩巷道开挖变形影响因素的数值分析[J].煤矿安全,2012,43(1):148-152.ZHANG Kai,ZHU Min,ZHANG Jianqiang,et al.Numerical analysis of physics influence factors of excavation deformation in deep soft rock[J].Safety in Coal Mines,2012,43(1):148-152.
[14]刘永茜,杨军,张玉贵.煤与瓦斯突出的非连续变形分析(DDA)模拟[J].煤炭学报,2010,35(5):797-801.LIU Yongqian,YANG Jun,ZHANG Yugui.Simulation on coal and gas outburst with discontinuous deformation analysis method[J].Journal of China Coal Society,2010,35(5):797-801.
[15]王文,朱维申,陈云娟,等.节理岩体巷道的稳定性分析[J].煤炭学报,2014,39(1):57-63.WANG Wen,ZHU Weishen,CHEN Yunjuan,et al.Analysis of roadway stability in jointed rock masses[J].Journal of China Coal Society,2014,39(1):57-63.
[16]左建平,赵洪宝,杨建立,等.大采高综放开采煤岩体冒落规律数值模拟研究[J].煤炭科学技术,2013,41(1):56-59.ZUO Jianping,ZHAO Hongbao,YANG Jianli,et al.Analysis and study on falling down law of coal and rock in high cutting fully mechanized top coal caving mining[J].Coal Science and Technology,2013,41(1):56-59.
[17]靖洪文,许国安.地下工程破裂岩体位移规律数值分析[J].岩石力学与工程学报,2003,22(8):1281-1286.JING Hongwen,XU Guoan.Numerical analysis on displacement law of underground broken rock mass[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(8):1281-1286.
[18]杨建立,左建平,孙凯,等.大采高多断层工作面综放诱发地表沉陷观测及数值分析[J].岩石力学与工程学报,2011,30(6):1216-1224.YANG Jianli,ZUO Jianping,SUN Kai,et al.In-situ observation and numerical analysis of surface subsidence of high working face with multi-fault induced by full-mechanized mining activity[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(6):1216-1224.
[19]鞠杨,左建平,宋振铎,等.煤矿开采中的岩层应力分布与变形移动的DDA模拟[J].岩土工程学报,2007,29(2):268-273.JU Yang,ZUO Jianping,SONG Zhenduo,et al.Numerical simulation of stress distribution and displacement of rock strata of coal mines by means of DDA method[J].Chinese Journal of Geotechnical Engineering,2007,29(2):268-273.
[20] ZHAO Shilong.Development of three dimensional spherical discontinuous deformation analysis for granular materials[D].Raleigh:North Carolina State University,2000.