摘要
本文主要探讨物探方法在灰岩区探测溶洞方面的有效性,为今后的道路岩溶探测提供经验参考。文中以郴(州)宁(远)高速公路K196+500～K196+700段岩溶探测为例,采用地质雷达、高密度电阻率方法探测溶洞的分布情况,最后利用钻孔对物探解释结果进行抽样验证。根据钻探资料可知,物探的解释成果是准确可行的,物探方法不仅节省了勘察成本,还避免了钻探以点代面的缺陷。在今后的工作中,可将这两种方法结合起来进行推广应用。
The exploration validity of geophysical methods to karst caves are discussed,which could offer the experience for the exploration of subgrade caves. Taking the exploration of karst caves in section K196 ＋ 500 ～ K196 ＋ 700 of Chenzhou-Ningyuan expressway as an example,the ground penetrating radar and the high-density resistivity method to survey karst caves are adopted,and the exploration results have been validated by the drilling. According to the drilling results,the geophysical interpreting results are exact. The cost for the investigation with geophysical methods is low,and the shortage for the drilling with point result substituting area one could be avoided. The above two geophysical methods could be jointly used in engineering practice.
出处
《工程勘察》
CSCD
北大核心
2010年第4期80-82,86,共4页
Geotechnical Investigation & Surveying
基金
湖南省自然科学基金资助项目(06JJ2077)
关键词
地质雷达
高密度电法
岩溶
视电阻率
ground penetrating radar
high-density resistivity method
karst
apparent resistivity
