冲击地压的滑块模型研究
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摘要
冲击地压具有典型的粘滑特性,用(Ruina,1983 年)双状态变量模型(Two State Variable Model, TSVM)可以很好地模拟冲击地压的这一特性。在分析冲击地压系统的运动特性的基础上,根据冲击地压发生的力学和地质条件,研究了用双状态变量本构模型来模拟冲击地压的动力学和演化行为。分析表明:模型中参数 K,β对冲击地压系统动力学行为和状态变量演化行为贡献较大,而系统动力学和演化行为对? , f 初值的敏感性相对较低。模型模拟了冲击地压系统的粘滑特性和冲击地压系统的动力失稳过程,较好地解释了冲击地压发生机理,为冲击地压失稳破坏的预测预报提供了理论依据。
Rockburst is provided with the representative slip characters and the two state variable model could simulate the characters very well. On the study of the dynamics behavior of rockburst system, according to mechanics conditions and geological circumstances of rockburst, the two state variable model is introduced to describe the dynamics behavior and evolvement behavior of rockburst. The research shows that the parameters k and β greatly affected the dynamics behavior and evolvement behavior of rockburst; and? , f contributed much to the model also. This model well simulated the stick-slip character relative to single state variable model. And the two state variable model truly describes the process of failure of rockburst system which explains the mechanism of rockburst and provides the theoretical foundation to forecast rockburst.
Rockburst is provided with the representative slip characters and the two state variable model could simulate the characters very well. On the study of the dynamics behavior of rockburst system, according to mechanics conditions and geological circumstances of rockburst, the two state variable model is introduced to describe the dynamics behavior and evolvement behavior of rockburst. The research shows that the parameters k and β greatly affected the dynamics behavior and evolvement behavior of rockburst; and? , f contributed much to the model also. This model well simulated the stick-slip character relative to single state variable model. And the two state variable model truly describes the process of failure of rockburst system which explains the mechanism of rockburst and provides the theoretical foundation to forecast rockburst.
引文
[1]李玉生.冲击地压机理探讨[J].煤炭学报,1984,(3):1-10.LI Yu-sheng.Study on the mechanics of rockburst[J].Journal ofChinaCoalSociety,1984,(3):1-10.
[2]齐庆新,史元伟,刘天泉.冲击地压粘滑失稳机理的实验研究[J].煤炭学报,1997,22(2):143-148.QI Qing-xin,SHI Yuan-wei,LIU Tian-quan.Mechanics of instability caused by viscous sliding in rockburst[J].Journal ofChinaCoalSociety,1997,22(2):143-148.
[3]代高飞,尹光志,皮文丽等.用滑块模型对冲击地压的研究(Ⅰ)[J].岩土力学,2004,25(8):1145-1151.DAI Gao-fei,YIN Guang-zhi,PI Wen-li, et al.Study on rockburst using stick slip model(?)[J].Rock andSoilMechanics,2004,25(8):1145-1151.
[4]AndyRuina.Slip instability and state variable friction laws[J].Journal ofGeophysResearch,1983,83:10359-10370.
[5]RiceJ R,Ruina.Stability of steady frictional slipping[J].Journal ofApplicclMechanics,1983,50:343-349.
[6]梁冰,章梦涛.采区冲击地压的数值预测[J].矿山压力与顶板管理,1995,(2):12-15.LIANG Bing,ZHANG Meng-tao.Numerical prediction of rock burst in mining area[J].GroundPressure andStrataControl,1995,(2):12-15.
[7]王来贵,潘一山.矿井不连续面冲击地压发生过程分析[J].中国矿业,1996,5(3):61-65.WANG Lai-gui,PAN Yi-shan.Analysis of rockburst process for noncontinuous area in mines[J].ChinaMiningMagazine,1996,5(3):61-65.
[8]CookN G W.A note on rockbursts considered as a problem of stability[J].Journal ofSouthAfricaInstituteMine andMetallurgy,1965,65:437-446.
[9]SalamonM D G,WagnerH.Role of stabilizing pillars in the alleviation of rockburst hazard in deep mines[J].Procedding of4thInstituteCongressRockMechanicsMontreal,1979,(2):561-566.
[10]牛志仁,陈党民.摩擦系统倍周期分叉结构的研究[M].中国地震.1996,12(1):16-25.NIU Zhi-ren,CHEN Dang-min.Study on the fine structure of the period-doubling hazard in deep mines[J].EarthquakeResearch inChina,1996,12(1):16-25.
[11]GrandD E,KippM E.Continuum modeling of explosive fracture in oil shale[J].InstituteJournal ofRockMechanicsMiningScience&Geomechanics,1980,17:145-157.
[12]HirataT.Fractal structure of spatial distribution earth- quake the two point correlation function[J].GeophysJournal ofResearchAstronSociety,1980,62:303-320.
[2]齐庆新,史元伟,刘天泉.冲击地压粘滑失稳机理的实验研究[J].煤炭学报,1997,22(2):143-148.QI Qing-xin,SHI Yuan-wei,LIU Tian-quan.Mechanics of instability caused by viscous sliding in rockburst[J].Journal ofChinaCoalSociety,1997,22(2):143-148.
[3]代高飞,尹光志,皮文丽等.用滑块模型对冲击地压的研究(Ⅰ)[J].岩土力学,2004,25(8):1145-1151.DAI Gao-fei,YIN Guang-zhi,PI Wen-li, et al.Study on rockburst using stick slip model(?)[J].Rock andSoilMechanics,2004,25(8):1145-1151.
[4]AndyRuina.Slip instability and state variable friction laws[J].Journal ofGeophysResearch,1983,83:10359-10370.
[5]RiceJ R,Ruina.Stability of steady frictional slipping[J].Journal ofApplicclMechanics,1983,50:343-349.
[6]梁冰,章梦涛.采区冲击地压的数值预测[J].矿山压力与顶板管理,1995,(2):12-15.LIANG Bing,ZHANG Meng-tao.Numerical prediction of rock burst in mining area[J].GroundPressure andStrataControl,1995,(2):12-15.
[7]王来贵,潘一山.矿井不连续面冲击地压发生过程分析[J].中国矿业,1996,5(3):61-65.WANG Lai-gui,PAN Yi-shan.Analysis of rockburst process for noncontinuous area in mines[J].ChinaMiningMagazine,1996,5(3):61-65.
[8]CookN G W.A note on rockbursts considered as a problem of stability[J].Journal ofSouthAfricaInstituteMine andMetallurgy,1965,65:437-446.
[9]SalamonM D G,WagnerH.Role of stabilizing pillars in the alleviation of rockburst hazard in deep mines[J].Procedding of4thInstituteCongressRockMechanicsMontreal,1979,(2):561-566.
[10]牛志仁,陈党民.摩擦系统倍周期分叉结构的研究[M].中国地震.1996,12(1):16-25.NIU Zhi-ren,CHEN Dang-min.Study on the fine structure of the period-doubling hazard in deep mines[J].EarthquakeResearch inChina,1996,12(1):16-25.
[11]GrandD E,KippM E.Continuum modeling of explosive fracture in oil shale[J].InstituteJournal ofRockMechanicsMiningScience&Geomechanics,1980,17:145-157.
[12]HirataT.Fractal structure of spatial distribution earth- quake the two point correlation function[J].GeophysJournal ofResearchAstronSociety,1980,62:303-320.
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