Ground penetrating radar detection and governance of tunnel karst cave
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Abstract:
The ex istence of g eolog ic pr oblems in kar st engineer ing has g reat influence on the stability o f the pr oject. Karst devel2 o ps w ell in a tunnel of t he H uoyo ng hig hw ay and ther e ar e a lo t o f unfilled cav es, w hich br ings g reat diff iculties to the tunnel co nstr uction. In or der to ensur e the constructio n safety, g round penetr ating r adar detectio n method and the eng ineering pr act ice wer e used to select the reasonable detection pa rameters and to detect tunnel vault and bot tom cav e. According to the ana lysis of typical w avefo rm fig ures, and t he differ ence of r adar wav efo rm amplitude in different medium and transmission char acteristics, the locatio n and range o f kar st cav e wer e estimated. T he radar detection results w ere in line wit h the actual ex cavatio n, w hich sug gested t hat t he g ro und penetrating radar detect ion is accur ate and reliable in t he det ection o f tunnel cave. T hroug h the com2 parison of sever al common cav e g over nance pro gr ams, the co rr esponding treatment measures for the kar st cave tunnel wer e pro2 posed in co nsiderat ion of the safety, eco nomy, and ease o f const ruct ion.
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