瑞雷面波折射层析及井间CT勘探在基岩地基勘察中的应用研究
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摘要
各类浅层地震勘探技术常用于土质地层的工程勘察项目中,并取得了良好的应用效果。本文阐述选用瑞雷面波、折射层析、井间CT勘探相结合的方法,对杭州闸口白塔基岩地基进行探测,获取白塔地基的基岩结构以及纵、横波和瑞雷波速度值,并结合钻孔资料划分基岩风化层,评价地基的稳定性,利用探测所得到的地震波速度值估算地基的承载力。本文分析了上述方法在基岩地基勘察中的应用效果,为白塔进一步的保护罩工程提供科学依据。
All kinds of shallow seismic exploration technology methods are often used in the engineering exploration project of soil strata,and obtained a good application effect.In this paper,the method of combining Rayleigh wave,refraction tomography and cross-hole seismic CT exploration was adopted to prospect the White Tower bedrock foundation of Zhakou,Hangzhou,its strata structure and p-wave,s-wave and Rayleigh wave velocity value of the bedrock foundation were obtained.Then combined with the borehole data,the bedrock weathered layer was divided and the stability of the foundation was evaluated.What's more,the seismic wave velocity value was used to get the bearing capacity value.This paper analyzes the application effect of the above methods in the survey of bedrock foundation,and provides a scientific basis for further protection project of the White Tower.
All kinds of shallow seismic exploration technology methods are often used in the engineering exploration project of soil strata,and obtained a good application effect.In this paper,the method of combining Rayleigh wave,refraction tomography and cross-hole seismic CT exploration was adopted to prospect the White Tower bedrock foundation of Zhakou,Hangzhou,its strata structure and p-wave,s-wave and Rayleigh wave velocity value of the bedrock foundation were obtained.Then combined with the borehole data,the bedrock weathered layer was divided and the stability of the foundation was evaluated.What's more,the seismic wave velocity value was used to get the bearing capacity value.This paper analyzes the application effect of the above methods in the survey of bedrock foundation,and provides a scientific basis for further protection project of the White Tower.
引文
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[2]单娜琳,程志平,刘云祯.工程地震勘探[M].北京:冶金工业出版社,2006.48～67.
[3]雷宛,肖宏跃,邓一谦.工程与环境物探教程[M].北京:地质出版社,2006.141～142.
[4]王振东.浅层地震勘探应用技术[M].北京:地质出版社,1994.32～67.
[5]曾校丰,钱荣毅,邓新生,等,面波勘探及其在沙漠地区表层地质结构调查中的应用[J].现代地质,2001,15(1):94～97.
[6]谢群,李钒.岩石地基快速简易评判初探[J].岩土工程界,2005,8(8):31～32.
[7]孙成栋.岩石声学测试[M].北京:地质出版社,1981.111～119.
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