岩石边坡失稳的瑞利面波频散响应特征
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摘要
根据边坡失稳的地球物理模型,系统研究了岩石边坡失稳的瑞利面波基阶模的相速度、波数响应特征,总结了边坡从稳定→失稳演化过程的瑞利面波基阶模频散特征变化规律,从中提取边坡失稳的瑞利面波基阶模相速度、波数、频散曲线等特征标志,使瑞利面波法不仅能用于探测边坡失稳的滑动面或结构面,而且还能评价边坡的稳定性,对边坡失稳进行综合预测预报.
The velocity and quantity of waves of primary phase Rayleigh-wave of rock type slopes to slip were calculated systematically. The feature of Rayleigh-wave primary frequency dispersion of rock type slopes and the evolution law of Rayleigh-wave frequency dispersion of slope from steady state to unsteady state were also concluded. Then,the phase velocity,wave number and frequency dispersion curve feature of Rayleigh-wave in the process of slope to slip were extracted. All these lead the method of Rayleigh-wave not only be used to detect the slip plane or structural plane of unsteady slope, but also to evaluate slope's stability and to forecast the situation of slope to slip.
The velocity and quantity of waves of primary phase Rayleigh-wave of rock type slopes to slip were calculated systematically. The feature of Rayleigh-wave primary frequency dispersion of rock type slopes and the evolution law of Rayleigh-wave frequency dispersion of slope from steady state to unsteady state were also concluded. Then,the phase velocity,wave number and frequency dispersion curve feature of Rayleigh-wave in the process of slope to slip were extracted. All these lead the method of Rayleigh-wave not only be used to detect the slip plane or structural plane of unsteady slope, but also to evaluate slope's stability and to forecast the situation of slope to slip.
引文
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[12]凡友华,肖柏勋,刘家琦.层状介质中轴对称柱面瑞利波频散函数的计算[J].地震工程与工程振动,2001,21(3):1-5.FAN You-hua,XIAO Bo-xun,LIU Jia-qi.Computation of Dispersion Function of Axis-symmetrical Cylindrical Rayleigh Wave in Multi-layered Media[J].Earthquake Engineering and Engineering Vibration,2001,21(3):1-5.
[2]邓清绿.斜坡变形构造[M].北京:中国地质大学出版社,2000.DENG Qing-lv.Pitch Deformation Structure[M].Beijing:Chinese GeologyUniversityPublishingHouse,2000.
[3]乔建平.滑坡体结构与坡形[J].岩石力学与工程学报,2002,21(9):1355-1358.QIAOJian-ping.Structure and Shape of Landslide[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(9):1355-1358.
[4]牛建军,张晓培,邱建慧.综合物探方法在中里滑坡调查中的应用[J].水文地质工程地质,2000,(3):53-55.NIU Jian-jun,ZHANG Xiao-pei,QIU Jian-hui.Comprehensive Geophysical Survey Method in Landslide Investigation Application[J].Hydrogeology and Engineering Geology,2000,(3):53-55.
[5]邓世坤,祁明松.探地雷达在滑坡和岩溶地区探测中的应用[J].地球科学-中国地质大学学报,1993,18(3):329-338.DENGShi-kun,QI Ming-song.Application ofGPR toSlide Surveyand Image Feature Analyses of GPR Data Obtained From Karst Regions[J].Earth Science-Journal of China University of Geosciences,1993,18(3):329-338.
[6]Rame Gowda B M.折射地震和电阻率法在喜马拉雅山麓丘陵地带滑坡灾害调查中的应用[J].地质科学译丛,1998,15(4):58-60.Rame Gowda B M.The Refraction Earthquake and the Resistivity Method Investigate at the the Himalayas Foothills Region Landslide Disaster the Application[J].Journal of Geo-science Translations,1998,15(4):58-60.
[7]王敏,何振才,师学明,等.综合地球物理方法在猛洞河地带滑坡调查中的应用[J].西部探矿工程,2003,90(11):168-170.WANG Min,HE Zhen-cai,SHI Xue-ming,et al.Synthesizes the Geophysics Method in the Mengdong River Region Landslide Investigation Application[J].West-China Exploration Engineering,2003,90(11):168-170.
[8]郭秀军,贾永刚,黄潇雨,等.利用高密度电阻率法确定滑坡面研究[J].岩石力学与工程学报,2004,23(10):1662-1669.GUO Xiu-jun,JIA Yong-gang,HUANG Xiao-yu,et al.Application of Multi-electrodes Electrical Method toDetection ofSlide-face Position[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(10):1662-1669.
[9]唐声海.直流电阻率测深法在川西高原康定白土坎滑坡勘探中的应用[J].中国地质灾害与防治学报,1999,10(1):99-104.TANG Sheng-hai.Direct-current Electronic Resistivity Depth Sounding Law in Western Sichuan Plateau Kangting White Ridge Landslide Exploration Application[J].The Chinese Journal Geological Hazard and Control,1999,10(1):99-104.
[10]李芙林,马惠民,侯殿英.综合物探技术在斜坡稳定性评价中的作用[J].路基工程,2002,(1):42-44.LI Fu-lin,MA Hui-min,HOU Dian-ying.Comprehensive Geophysical Survey Technology in Pitch Stability Appraisal Function[J].Roadbed Project,2002,(1):42-44.
[11]凡友华,刘家琦,肖柏勋.计算瑞利波频散曲线的快速矢量传递算法[J].湖南大学学报(自然科学版),2002,29(5):25-30.FAN You-hua,LIU Jia-qi,XIAO Bo-xun.Fast Vector-transfer Algorithm for Computation of Rayleigh Wave Dispersion Curves[J].Journal of Hunan University(Natural Sciences Edition),2002,29(5):25-30.
[12]凡友华,肖柏勋,刘家琦.层状介质中轴对称柱面瑞利波频散函数的计算[J].地震工程与工程振动,2001,21(3):1-5.FAN You-hua,XIAO Bo-xun,LIU Jia-qi.Computation of Dispersion Function of Axis-symmetrical Cylindrical Rayleigh Wave in Multi-layered Media[J].Earthquake Engineering and Engineering Vibration,2001,21(3):1-5.
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