Application of Horizontal Impact Drilling Core Technology in Geological Survey of Expressway
In order to reduce the elevation difference of highway geological survey results,a highway geological survey method based on hori-zontal impact drilling core technology is proposed in this paper.Deploy exploration sites,design GPS+remote sensing combination survey structure,build horizontal impact drilling coring highway geological survey model,and implement geological survey with manual visual inspec-tion and correction.The results show that the elevation difference obtained by this method is well controlled below 1.16 m,which indicates that the horizontal percussion drilling coring technology can improve the investigation accuracy and has a good application effect.
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