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http://dx.doi.org/10.15683/kosdi.2022.6.30.261

A Study on the Calculation of Cavity Filling Amount Using Ground Penetrating Radar and Cavity Shaping Equipment  

Hong, Gigwon (Dept. of Civil and Disaster Prevention Engineering, Halla University)
Kim, Sang Mok (Geotechnical Group, Geotechnical Korea Engineering Co., Ltd.)
Park, Jeong Jun (Incheon Disaster Prevention Research Center, Incheon National University)
Publication Information
Journal of the Society of Disaster Information / v.18, no.2, 2022 , pp. 261-268 More about this Journal
Abstract
Purpose: In the case of cavity discovered by ground penetrating radar exploration, it is necessary to accurately predict the filling amount in the cavity in advance, fill the cavity sufficiently and exert strength to ensure stability and prevent ground subsidence. Method: The cavity waveform analysis method by GPR exploration and the method using the cavity shape imaging equipment were performed to measure the cavity shape with irregular size and shape of the actual cavity, and the amount of cavity filling of the injection material was calculated during rapid restoration. Results: The expected filling amount was presented by analyzing the correlation between the cavity size and the filling amount of injection material according to the cavity scale and soil depth through the method by GPR exploration and the cavity scale calculation using the cavity shaping equipment. Conclusion: The cavity scale measured by the cavity imaging equipment was found to be in the range of 20% to 40% of the cavity scale by GPR exploration. In addition, the filling amount of injection material compared to the cavity scale predicted by GPR exploration was in the range of about 60% to 140%, and the filling amount of the injection material compared to the cavity size by the cavity shaping equipment was confirmed to be about 260% to 320%.
Keywords
Ground Penetration Radar Exploration; Cavity Shape Imaging Equipment; Cavity Scale; Filling Amount; Volume Change; Soil Depth;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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