基于熵权法和可拓学理论的隧道围岩质量评价
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摘要
引入可拓学理论,建立隧道围岩质量评价物元模型,采用熵权法计算指标权重,选取岩石单轴饱和抗压强度RC、围岩质量指标RQD值、结构面摩擦系数Jf、节理间距Jd、地下水状态W、完整性系数Kv为评价指标,对坪子头隧道左线围岩质量等级进行评价,研究表明,基于熵权法的围岩质量可拓评价不仅取得了与工程地质报告相一致的评价结果,而且能客观反映待评围岩与相邻围岩等级之间的距离,从而提供更为准确的围岩级别,为隧道施工提供了科学依据。
Based on extensional theory,the evaluation matter element model of rock quality was established to calculating the weight according on entropy weight method and six factors,i.e.rock uniaxial compressive strengthen(RC),rock quality designation(RQD),strengthen coefficient of structural plane(Jf),joints distance(Jd),groundwater condition(W),integrity coefficient(Kv),were selected in the evaluation of the quality of the surrounding rocks of Pingzitou left tunnel.The study shows that,based on entropy weight method,the result of the rock quality extension evaluation was in accord with the engineering geology report and reflected the distance between the rock and the adjacent one,so as to put forward more accurate level of the rock and scientific guidance for tunnel construction.
Based on extensional theory,the evaluation matter element model of rock quality was established to calculating the weight according on entropy weight method and six factors,i.e.rock uniaxial compressive strengthen(RC),rock quality designation(RQD),strengthen coefficient of structural plane(Jf),joints distance(Jd),groundwater condition(W),integrity coefficient(Kv),were selected in the evaluation of the quality of the surrounding rocks of Pingzitou left tunnel.The study shows that,based on entropy weight method,the result of the rock quality extension evaluation was in accord with the engineering geology report and reflected the distance between the rock and the adjacent one,so as to put forward more accurate level of the rock and scientific guidance for tunnel construction.
引文
[1]张忠亭,景锋,杨和礼.工程实用岩石力学[M].北京:中国水利水电出版社,2009.
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[4]冯玉国.灰色优化理论模型在地下工程围岩稳定性分类中的应用[J]岩土工程学报,1996,18(3):62-66.
[5]康志强,冯夏庭,周辉.基于层次分析法的可拓学理论在地下洞室围岩质量评价中的应用[J].岩石力学与工程学报,2006,25(2):3687-3693.
[6]梁桂兰,徐卫亚,谈小龙.基于熵权的可拓理论在围岩质量评价中的应用[J].岩土力学,2010,31(2):535-540.
[7]康志强,周辉,冯夏庭,等.地下隧洞岩体质量的可拓学理论评价[J].地下空间与工程学报,2008,4(2):259-264.
[8]张鹏,陈剑平,邱道宏.基于粗糙集的隧道围岩质量可拓学评价[J].岩土力学,2009,31(1):246-250.
[9]杨春燕,蔡文.可拓工程[M].北京:科学出版社,2007.
[10]贾超,肖树芳,刘宁.可拓学理论在洞石岩体质量评价中的应用[J].岩土力学工程学报,2003,22(5):751-756.
[2]曹文贵,张永杰.地下结构围岩质量分类的变权重二级模糊综合评判方法研究[J].岩石力学与工程学报,2006,25(8):1612-1618.
[3]李强.BP神经网络在工程围岩质量分级中的应用研究[J].西北地震学报,2002,24(3):220-229.
[4]冯玉国.灰色优化理论模型在地下工程围岩稳定性分类中的应用[J]岩土工程学报,1996,18(3):62-66.
[5]康志强,冯夏庭,周辉.基于层次分析法的可拓学理论在地下洞室围岩质量评价中的应用[J].岩石力学与工程学报,2006,25(2):3687-3693.
[6]梁桂兰,徐卫亚,谈小龙.基于熵权的可拓理论在围岩质量评价中的应用[J].岩土力学,2010,31(2):535-540.
[7]康志强,周辉,冯夏庭,等.地下隧洞岩体质量的可拓学理论评价[J].地下空间与工程学报,2008,4(2):259-264.
[8]张鹏,陈剑平,邱道宏.基于粗糙集的隧道围岩质量可拓学评价[J].岩土力学,2009,31(1):246-250.
[9]杨春燕,蔡文.可拓工程[M].北京:科学出版社,2007.
[10]贾超,肖树芳,刘宁.可拓学理论在洞石岩体质量评价中的应用[J].岩土力学工程学报,2003,22(5):751-756.
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