基于综合物探法的矿山土质滑坡滑动面探测
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摘要
综合物探法在工程地质领域获得了广泛地应用。运用高密度电阻率法和地质雷达法从不同的物理属性入手揭露滑坡体的地质构造,综合两种方法的特点互相验证减少资料的多解性,从而准确查明滑动面的空间位置,并且预测潜在的不稳定边坡,为边坡体监测和防治提供借鉴。以白云鄂博矿山滑坡为研究对象,分析了电磁波在滑体中传播的特征和边坡体中地层电阻率的反映,并结合参数换算结果,给出地球物理解释。结果表明:综合物探法清晰划分出了边坡结构,准确刻画出了滑动面空间位置和滑床形态,查明了灾害诱因,进一步预测了潜在的不稳定区域,充分证实了综合物探法是一种实用有效的地质灾害调查及评估技术手段。
Comprehensive geophysical prospecting in the field of engineering geology has been widely used.The purpose of this paper is to apply the high density resistivity method and the geological radar method to expose the geological structure of the landslide body from different physical properties.The characteristics of the two methods are mutually verified to reduce the multi-solution of the data,so as to accurately identify the sliding surface space Location,and to predict potential unstable slopes,and to provide reliable geophysical basis for slope monitoring and control as well.In this paper,the characteristics of electromagnetic wave propagation in the sliding body and the resistivity of the formation in the slope are analyzed.The geophysical interpretation is given by combining the parameters.The results show that the geophysical method clearly divides the slope structure,accurately depicts the sliding surface space and the shape of the sliding bed,finds out the disaster incentives,further predicts the potential unstable region,and fully confirms that the comprehensive geophysical method is Practical and effective geological hazard investigation and evaluation techniques.
Comprehensive geophysical prospecting in the field of engineering geology has been widely used.The purpose of this paper is to apply the high density resistivity method and the geological radar method to expose the geological structure of the landslide body from different physical properties.The characteristics of the two methods are mutually verified to reduce the multi-solution of the data,so as to accurately identify the sliding surface space Location,and to predict potential unstable slopes,and to provide reliable geophysical basis for slope monitoring and control as well.In this paper,the characteristics of electromagnetic wave propagation in the sliding body and the resistivity of the formation in the slope are analyzed.The geophysical interpretation is given by combining the parameters.The results show that the geophysical method clearly divides the slope structure,accurately depicts the sliding surface space and the shape of the sliding bed,finds out the disaster incentives,further predicts the potential unstable region,and fully confirms that the comprehensive geophysical method is Practical and effective geological hazard investigation and evaluation techniques.
引文
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[14]杜良,刘树才,姜志海,等.隧道检测中探地雷达典型图像特征分析[J].现代隧道技术,2016,53(2):190-195.DU L,LIU S C,JIANG Z H,et al.Analysis of typical image features of ground penetrating radar in tunnel detection[J].Modern Tunnelling Technology,2016,53(2):190-195.(In Chinese)
[2]王国艳,褚雪松,窦明武,等.边坡临界滑动面确定的蛙跳算法[J].人民黄河,2012,34(1):128-130.WANG G Y,CHU X S,DOU M W,et al.Frog leaping algorithm for the location of critical slip surfaces of slopes[J].Yellow River,2012,34(1):128-130.(In Chinese)
[3]贺子光,姚翔龙,赵法锁,等.改进GEP方法在边坡非圆临界滑动面搜索中的应用[J].长江科学院院报,2017,34(1):91-97.HE Z G,YAO X L,ZHAO F S,et al.Application of improved GEP method in non-circular critical slip surface searching of slope[J].Journal of Yangtze River Scientific Research Institute,2017,34(1):91-97.(In Chinese)
[4]杨大明.露天矿滑坡勘察研究分析[J].露天采矿技术,2016,31(7):22-25.YANG D M.Research and analysis of landside survey in open-pit mine[J].Opencast Mining Technology,2016,31(7):22-25.(In Chinese)
[5]刘晓宇,赵颖,刘洋,等.土质边坡极限平衡状态及临界滑动面的判定方法[J].岩石力学与工程学报,2012,31(7):1369-1378.LIU X Y,ZHAO Y,LIU Y,et al.Determination method of limit equilibrium state and critical slip surface of soil slope[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(7):1369-1378.(In Chinese)
[6]徐兴倩,苏立君,梁双庆.地球物理方法探测滑坡结构特征研究现状综述[J].地球物理学进展,2015,30(3):1449-1458.XU X Q,SU L J,LIANG S Q.A review of geophysical deection methods of landslide structure characteristics[J].Progress in Geophysics,2015,30(3):1449-1458.(In Chinese)
[7] YAMAKAWA Y,KOSUGI K,MASAOKA N,et al.Use of a combined penetrometer-moisture probe together with geophysical methods to survey hydrological properties of a natural slope[J].Vadose Zone Journal,2010,9(3):768-779.
[8] JONGMANS D,BIEVRE G,RENALIER F,et al.Geophysical investigation of a large landslide in glaciolacustrine clays in the Trieves area(French Alps)[J].Engineering Geology,2009,109(12):45-56.
[9] GRANDJEAN G,BITRI A,KRZEMINSKA D M.Characterisation of a landslide fissure pattern by integrating seismic azimuth tomography and geotechnical testing[J].Hydrological Processes,2012,26(14):2120-2127.
[10]杨峰,张全升,王鹏越,等.公路路基地质雷达探测技术研究[M].北京:人民交通出版社,2009.YANG F,ZHANG Q S,WANG P Y,et al.Study on detection technology of highway subgrade ground penetrating radar[M].Beijing:China Communications Press,2009.(In Chinese)
[11]刘志刚,凌宏亿,俞文生.隧道隧洞超前地质预报[M].北京:人民交通出版社,2011.LIU Z G,LING H Y,YU W S.Advanced geological prediction of tunnel tunnels[M].Beijing:China Communications Press,2011.(In Chinese)
[12]姚显春,郭炳煊,吕高,等.地质雷达数据介电常数递推反演研究[J].西安理工大学学报,2016,32(2):199-206.YAO X C,GUO B X,LV G,et al.Recursive inversion research on dielectric permittivity with data by ground penetrating rader[J].Journal of Xi'an University of Technology,2016,32(2):199-206.(In Chinese)
[13]石刚.探地雷达系统优化及在隧道地质超前预报中的应用研究[D].西安:长安大学,2009.SHI G.Improvement of ground penetrating radar and its application into the predication of geological conditions in tunnel engineering[D].Xi'an:Chang'an University,2009.(In Chinese)
[14]杜良,刘树才,姜志海,等.隧道检测中探地雷达典型图像特征分析[J].现代隧道技术,2016,53(2):190-195.DU L,LIU S C,JIANG Z H,et al.Analysis of typical image features of ground penetrating radar in tunnel detection[J].Modern Tunnelling Technology,2016,53(2):190-195.(In Chinese)