地下洞室陡倾角层状围岩的静动力稳定性研究
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摘要
以布伦口-公格尔水电站引水隧洞工程作为研究对象,研究层状岩体条件下当节理面与隧洞洞轴线近乎一致时的围岩稳定性,通过对层状岩质隧洞建立的物理模型,将其转化为等厚度岩质矩形板在纵向荷载作用下静动力学分析的问题,得到在静力作用下的临界荷载公式和在周期性动力作用下的动力不稳定区域,二者相结合,研究岩质矩形板是否发生失稳,为以后将大倾角岩层转化为矩形板分析提供了理论依据,最后利用工程算例进行分析说明。
Here,taking the diversion tunnel engineering of Bulongkou-Gonggeer Hydropower Station as a research object,the surrounding rock stability under stratified rock mass as the joint surface is almost consistant with the axis of the tunnel hole is analyzed in detail.Through the physical model for stratified rock tunnel,it is transformed to be the static and dynamic analysis for the rectangular rock plate with constant thickness under longitudinal loading,so as to obtain the critical load formula under static action and the dynamic unstability region under cyclical power.Combined with the two theories,it is studied whether the unstability of the rectangular rock plate occurs.All these as mentioned above could provide the theoretical basis for transforming the analysis of big dip strata into the analysis of rectangular rock plate in the future.At last,the analysis and illustration are made by using the calculation examples of engineering.
Here,taking the diversion tunnel engineering of Bulongkou-Gonggeer Hydropower Station as a research object,the surrounding rock stability under stratified rock mass as the joint surface is almost consistant with the axis of the tunnel hole is analyzed in detail.Through the physical model for stratified rock tunnel,it is transformed to be the static and dynamic analysis for the rectangular rock plate with constant thickness under longitudinal loading,so as to obtain the critical load formula under static action and the dynamic unstability region under cyclical power.Combined with the two theories,it is studied whether the unstability of the rectangular rock plate occurs.All these as mentioned above could provide the theoretical basis for transforming the analysis of big dip strata into the analysis of rectangular rock plate in the future.At last,the analysis and illustration are made by using the calculation examples of engineering.
引文
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[4]周晓军,高扬,李泽龙,等.地质顺层偏压隧道围岩压力及其分布特点的试验研究[J].现代隧道技术,2006,43(1):12－21.
[5]周应麟,邱喜华.层状岩层围岩隧道稳定性的探讨[J].地下空间与工程学报,2006,2(2):345－348.
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[8]唐亚松,张鑫,蔡焕杰.一种基于回归分析与时序分析的降水预报模型[J].水土保持通报,2009,29(1):88－91.
[9]吕效国,王占君,钱峰.自回归模型建立的必要条件及其应用[J].数学的实践与认识,2008,38(16):109－115.
[10]孙强.直杆的动力稳定性分析(Ⅰ)[J].安徽建筑工业学院学报(自然科学版),1996,4(1):38－43.
[11]孙强,杨大军.弹性介质中杆的动力稳定性研究[J].工程力学,1997,14(1):87－91.
[12]彭凡,傅衣铭.粘弹性板的非线性动力稳定性分析方法[J].动力学与控制学报,2005,3(4):60－65.
[13]张益群,黄一平.参数共振临界频率的分析[J].昆明工学院学报,1992,17(4):59－64.
[14]薛大为.板壳理论[M].北京:北京工业学院出版社,1988:47－79.
[15]S.铁摩辛柯.弹性稳定理论[M].北京:科学出版社,1960:49－51.
[16]符.华.鲍洛金著,林砚田等译.弹性体系的动力稳定性[M].北京:高等教育出版社,1960:257－498.
[2]鲁志伟.层状岩体地下洞室失稳机理及稳定性评价理论研究[J].贵阳:贵州大学,2007.
[3]刘卡丁,张玉军.层状岩体剪切破坏面方向的影响因素[J].岩石力学与工程学报,2002,21(3):335－339.
[4]周晓军,高扬,李泽龙,等.地质顺层偏压隧道围岩压力及其分布特点的试验研究[J].现代隧道技术,2006,43(1):12－21.
[5]周应麟,邱喜华.层状岩层围岩隧道稳定性的探讨[J].地下空间与工程学报,2006,2(2):345－348.
[6]姜伟,吴爱国.岩层层理产状与隧道稳定性的关系[J].华南港工,2008,(3):61－64.
[7]潘昌实.隧道力学数值方法[M].北京:中国铁道出版社,1995:256－318.
[8]唐亚松,张鑫,蔡焕杰.一种基于回归分析与时序分析的降水预报模型[J].水土保持通报,2009,29(1):88－91.
[9]吕效国,王占君,钱峰.自回归模型建立的必要条件及其应用[J].数学的实践与认识,2008,38(16):109－115.
[10]孙强.直杆的动力稳定性分析(Ⅰ)[J].安徽建筑工业学院学报(自然科学版),1996,4(1):38－43.
[11]孙强,杨大军.弹性介质中杆的动力稳定性研究[J].工程力学,1997,14(1):87－91.
[12]彭凡,傅衣铭.粘弹性板的非线性动力稳定性分析方法[J].动力学与控制学报,2005,3(4):60－65.
[13]张益群,黄一平.参数共振临界频率的分析[J].昆明工学院学报,1992,17(4):59－64.
[14]薛大为.板壳理论[M].北京:北京工业学院出版社,1988:47－79.
[15]S.铁摩辛柯.弹性稳定理论[M].北京:科学出版社,1960:49－51.
[16]符.华.鲍洛金著,林砚田等译.弹性体系的动力稳定性[M].北京:高等教育出版社,1960:257－498.