地震滑坡地形剖面线多重分形特征及其在稳定性判别中的应用
|
摘要
"5.12"汶川地震诱发了大量的滑坡和不稳定斜坡体,这些滑坡和不稳定斜坡体的稳定性影响到灾区社会经济发展和灾后重建。地震滑坡的不同稳定性状态孕育了滑坡地形剖面线的演化特征,并且地震滑坡地形剖面线直接地反映了在地震力作用下坡体的演变过程和演化机制。根据实测的汶川地震诱发的滑坡地形剖面线特征,研究了相对稳定滑坡、蠕滑阶段滑坡和不稳定斜坡的地形剖面线的分布特征,以及地震滑坡不同稳定状态下的地形剖面线的多重分形维数演化特征。研究结果表明相对稳定滑坡的多重分形维数演化特征的具有明显的有序性,处于蠕滑状态的滑坡和不稳定斜坡的多重分形维数演化出现明显的特征性拐点。
A mass of landslides and instable slopes was induced in "5.12" Wenchuan earthquake.The stability of the landslides and instable slopes would influence the development of society and economy and reconstruction in the affected area of the earthquake.The different stability states of the seismic landslides determine the different evolvement characteristics of the terrain profiles and the terrain profile traces directly reflect the evolvement process and mechanism of slopes in the seismic excitation.Based on the measured terrain profile traces of landslides induced by the Wenchuan earthquake,the distributive characters of terrain profile traces of the relative stable landslides and landslides in slow sliding and instable phases,and their multifractal dimension evolution characters were studied.Results show that the evolvement of multifractal dimensions of relative stable landslides has evident orders,and landslides in slow sliding and instable phases have obvious characteristic inflexions.
A mass of landslides and instable slopes was induced in "5.12" Wenchuan earthquake.The stability of the landslides and instable slopes would influence the development of society and economy and reconstruction in the affected area of the earthquake.The different stability states of the seismic landslides determine the different evolvement characteristics of the terrain profiles and the terrain profile traces directly reflect the evolvement process and mechanism of slopes in the seismic excitation.Based on the measured terrain profile traces of landslides induced by the Wenchuan earthquake,the distributive characters of terrain profile traces of the relative stable landslides and landslides in slow sliding and instable phases,and their multifractal dimension evolution characters were studied.Results show that the evolvement of multifractal dimensions of relative stable landslides has evident orders,and landslides in slow sliding and instable phases have obvious characteristic inflexions.
引文
[1]谢和平,邓建辉,台佳佳,等.汶川大地震灾害与灾区重建的岩土工程问题[J].岩石力学与工程学报,2008,27(8):1781-1791.XIE Heping,DENG Jianhui,TAI Jiajia,et al.Wenchuan large earthquake and post-earthquake reconstruction-related geotechnical problems[J].Chinese Journal of Rock Mechanics And Engineering,2008,27(8):1781-1791.(in Chinese)
[2]殷跃平.汶川八级地震地质灾害研究[J].工程地质学报,2008,16(4):433-444.YING Yueping.Researches on the geo-hazards triggered by Wenchuan earthquake,Sichuan[J].Journal of Engineering Geology,2008,16(4):433-444.(in Chinese)
[3]崔鹏,韦方强,何思明,等.5.12汶川地震诱发的山地灾害及减灾措施[J].山地学报,2008,26(32):80-82.CUI Peng,WEI Fangqiang,HE Siming,et al.Mountain disasters induced by the earthquake of May 12 in Wenchuan and the disasters mitigation[J].Journal of Mountain Science,2008,26(32):80-82.(in Chinese)
[4]Guzzetti F.Landslide fatalities and the evaluation of landslide risk in Italy[J].Engineering Geology,2000,58(2):89-107.
[5]Alexander D.Housing crisis after natural disaster:the aftermath of the November 1980 southern Italian earthquake[J].Geoforum,1984,15(4):489-516.
[6]乔建平.滑坡减灾理论与实践[M],北京:科学出版社,1997:31-40.QIAO Jianping.Theory And Practice of Landslide Alleviating Disaster[M].Beijing:Science Press,1997:31-40.
[7]吴树仁,韩金良,石菊松,等.三峡库区巴东县城附近主要滑坡边界轨迹分形分维特征与滑坡稳定性关系[J].地球学报,2005,26(5):455-460.WU Shuren,HAN Jinliang,SHI Jusong,et al.A study of the relationship between landslide stability and fractal dimension of the major landslidetrace pattern near Badong in the reservoir region of the Yangtze Gorge Project[J].Acta Geosicientia Sinica,2005,26(5):455-460.(in Chi-nese)
[8]吴树仁,石玲,谭成轩,等.长江三峡黄腊石和黄土坡滑坡分形分维分析[J].地球科学—中国地质大学学报,2000,25(1):61-65.WU Shuren,SHI Ling,TAN Chengxuan,et al.Fractal analysis of Huanglashi and Huangtupo landslides in Three Gorges,Changjiang River,Chi-na[J].Earth Science-Journal of China University of Geosciences,2000,25(1):61-65.(in Chinese)
[9]陈颙,陈凌.分形几何学[M].北京:地震出版社,1998:125-137.CHEN Yong,CHEN Ling.Fractal Geometry[M].Beijing:Earthquake Press,1998:125-137.(in Chinese)
[10]Mandelbrot B B.Multifractal measures,especially for the geophysicist[J].Pure And Applied.Geophysics,1989,131(1/2):5-42.
[11]乔建平,吴彩燕,田宏岭.三峡库区云阳-巫山段坡形因素对滑坡发育的贡献率研究[J].工程地质学报,2006,14(1):18-22.QIAO Jianping,WU Caiyan,TIAN Hongling.Contributing ratios of the slope shape toward the landslide development from Yunyang to Wushan inThree Gorges Reservoir Area[J].Journal Of Engineering Geology,2006,14(1):18-22.(in Chinese)
[12]吴彩燕,乔建平,兰立波.基于GIS的三峡库区滑坡坡形研究[J].自然灾害学报,2005,14(3):34-37.WU Caiyan,QIAO Jianping,LAN Libo.Research on slope shape of landslide based on GIS technique[J].Journal of Natural Disasters,2005,14(3):34-37.(in Chinese)
[2]殷跃平.汶川八级地震地质灾害研究[J].工程地质学报,2008,16(4):433-444.YING Yueping.Researches on the geo-hazards triggered by Wenchuan earthquake,Sichuan[J].Journal of Engineering Geology,2008,16(4):433-444.(in Chinese)
[3]崔鹏,韦方强,何思明,等.5.12汶川地震诱发的山地灾害及减灾措施[J].山地学报,2008,26(32):80-82.CUI Peng,WEI Fangqiang,HE Siming,et al.Mountain disasters induced by the earthquake of May 12 in Wenchuan and the disasters mitigation[J].Journal of Mountain Science,2008,26(32):80-82.(in Chinese)
[4]Guzzetti F.Landslide fatalities and the evaluation of landslide risk in Italy[J].Engineering Geology,2000,58(2):89-107.
[5]Alexander D.Housing crisis after natural disaster:the aftermath of the November 1980 southern Italian earthquake[J].Geoforum,1984,15(4):489-516.
[6]乔建平.滑坡减灾理论与实践[M],北京:科学出版社,1997:31-40.QIAO Jianping.Theory And Practice of Landslide Alleviating Disaster[M].Beijing:Science Press,1997:31-40.
[7]吴树仁,韩金良,石菊松,等.三峡库区巴东县城附近主要滑坡边界轨迹分形分维特征与滑坡稳定性关系[J].地球学报,2005,26(5):455-460.WU Shuren,HAN Jinliang,SHI Jusong,et al.A study of the relationship between landslide stability and fractal dimension of the major landslidetrace pattern near Badong in the reservoir region of the Yangtze Gorge Project[J].Acta Geosicientia Sinica,2005,26(5):455-460.(in Chi-nese)
[8]吴树仁,石玲,谭成轩,等.长江三峡黄腊石和黄土坡滑坡分形分维分析[J].地球科学—中国地质大学学报,2000,25(1):61-65.WU Shuren,SHI Ling,TAN Chengxuan,et al.Fractal analysis of Huanglashi and Huangtupo landslides in Three Gorges,Changjiang River,Chi-na[J].Earth Science-Journal of China University of Geosciences,2000,25(1):61-65.(in Chinese)
[9]陈颙,陈凌.分形几何学[M].北京:地震出版社,1998:125-137.CHEN Yong,CHEN Ling.Fractal Geometry[M].Beijing:Earthquake Press,1998:125-137.(in Chinese)
[10]Mandelbrot B B.Multifractal measures,especially for the geophysicist[J].Pure And Applied.Geophysics,1989,131(1/2):5-42.
[11]乔建平,吴彩燕,田宏岭.三峡库区云阳-巫山段坡形因素对滑坡发育的贡献率研究[J].工程地质学报,2006,14(1):18-22.QIAO Jianping,WU Caiyan,TIAN Hongling.Contributing ratios of the slope shape toward the landslide development from Yunyang to Wushan inThree Gorges Reservoir Area[J].Journal Of Engineering Geology,2006,14(1):18-22.(in Chinese)
[12]吴彩燕,乔建平,兰立波.基于GIS的三峡库区滑坡坡形研究[J].自然灾害学报,2005,14(3):34-37.WU Caiyan,QIAO Jianping,LAN Libo.Research on slope shape of landslide based on GIS technique[J].Journal of Natural Disasters,2005,14(3):34-37.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心