探地雷达和浅层地震波法在海堤抛石层探测中的应用
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摘要
介绍探地雷达、瑞雷波法和地震映像法的基本原理及特点,针对海堤抛石断面结构分层及其物性特征,以浙江东部某海堤为例,综合运用探地雷达、瑞雷波法和地震映像法,高效、可靠、准确地探明了抛石层的分布范围及深度。探测实践表明,探地雷达具有快速、连续和整体性的优势,瑞雷波法具有较强的纵向分辨能力,地震映像法具有较强的横向分辨能力,这3种方法分别从浅层人工地震波场和电磁场方面反映探测对象和目标,起到了较好的互补和综合作用。
The basic principles and characteristics of the ground-penetrating radar method,the Rayleigh wave method and the seismic imaging method are described.With a sea dike in eastern Zhejiang Province as an example,the three methods are comprehensively applied to detect the range and depth of the riprap layer.The detection results show that the round penetrating radar method possesses advantages such as high speed,continuous detection and convenient operation;and that the Rayleigh wave method has a high vertical resolution while the seismic imaging method has a high transversal resolution.These three methods play a good integrated and supplementary role in the detection of buried targets,from the aspect of the shallow seismic wave field and the electromagnetic field.
The basic principles and characteristics of the ground-penetrating radar method,the Rayleigh wave method and the seismic imaging method are described.With a sea dike in eastern Zhejiang Province as an example,the three methods are comprehensively applied to detect the range and depth of the riprap layer.The detection results show that the round penetrating radar method possesses advantages such as high speed,continuous detection and convenient operation;and that the Rayleigh wave method has a high vertical resolution while the seismic imaging method has a high transversal resolution.These three methods play a good integrated and supplementary role in the detection of buried targets,from the aspect of the shallow seismic wave field and the electromagnetic field.
引文
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[2]李忠.建设防波堤中有关应用爆破挤淤的质量监理[J].水运工程,2000(11):52-56.
[3]武可贵,程学标.探地雷达在工程地基检测中的应用研究[J].水运工程,1997(9):5-8.
[4]邓世坤.探地雷达用于深圳湾软基处理工程中的质量检测[J].岩土工程学报,2000,22(1):33-35.
[5]李大心.探地雷达方法与应用[M].北京:地质出版社,1994.
[6]雷林源.探地雷达应用中的几个基本问题[J].物探与化探,1998,22(6):408-414.
[7]王水强,万明浩,谢雄耀,等.不同地质雷达测量参数对数据采集效果的影响[J].物探与化探,1999,23(3):211-215.
[8]张碧星,鲁来玉,鲍光淑,等.瑞雷波勘探中“之”字形频散曲线研究[J].地球物理学报,2002,45(2):263-274.
[9]祁生文,孙进忠,何华,等.瑞雷波勘探的研究现状及展望[J].地球物理学进展,2002,17(4):630-635.
[10]蔡靖,张献民,王建华,等.面波与震动映像结合的防渗墙无损检测技术[J].水利水电科技进展,2005,25(2):40-42.
[11]刘江平,陈超,候卫生.浅层地震映像法在堤坝无损检测中的应用[J].人民长江,2002,33(5):26-28.
[12]刘江平,张丽琴,张友明,等.浅层地震技术在大堤防(隔)渗墙质量检测中的应用[J].物探与化探,2000,24(4):302-306.
[13]SL326—2005,水利水电工程物探规程[S].
[14]王兴泰.工程与环境物探新方法新技术[M].北京:地质出版社,1996.
[15]莫撼.水文地质及工程地质地球物理勘查[M].北京:原子能出版社,1997.
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