Original Article
Abstract
References
Information
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%.
연구목적: 지표투과레이더 탐사에 의해 발견된 공동의 경우, 정확히 예측된 공동의 체적에 상응하도록 주입재를 충분히 채우고 강도를 발휘하게 함으로써 안정성을 확보하여 지반함몰을 예방하여야 한다. 연구방법: 지표투과레이더 탐사에 의한 공동파형 분석 방법과 공동형상 촬영장비를 이용한 방법을 바탕으로, 공동의 규모와 형상이 불규칙한 실제 공동을 실측하여 긴급복구시 주입재의 공동채움량을 산정하였다. 연구결과: 지표투과레이더 탐사에 의한 방법과 공동형상화 장비를 활용한 공동 규모 산정을 통하여 공동규모 및 토피에 따른 주입재 채움량과의 상관관계를 분석하여 예상 채움량을 제시하였다. 결론: 공동형상화 장비에 의해 실측된 공동체적은 지표투과레이더 탐사에 의한 공동 체적의 20% ~ 40% 범위로 나타났다. 또한, GPR탐사에 의해 예측된 공동규모 대비 주입재 채움량은 약 60% ~ 140% 범위였으며, 공동 형상화 장비에 의한 공동규모 대비 주입재 채움량은 약 260% ~ 320%로 확인되었다.
- Chae, H.Y. (2017). "Study on subsurface collapse of road surface and cavity search in urban area." Tunnel & Underground Space, Vol. 27, No. 6, pp. 387-392.
- Endres, A.L., Clement, W.P., Rudolph, D.L. (2000). "Ground penetrating radar imaging of an aquifer during a pumping test." Ground Water, Vol. 38, pp. 566-576. 10.1111/j.1745-6584.2000.tb00249.x
- Hagrey, S.A., Müller, C. (2000). "GPR study of pore water content and salinity in sand." Geophysical Prospecting, Vol. 48, pp. 63-85. 10.1046/j.1365-2478.2000.00180.x
- Han, J.G., Ryu, Y.S., Kim, D., Park, J.J., Hong, G. (2017). "A study on expansion and strength characteristics of material for emergency restoration in ground cavity." Journal of Korean Geosynthetics Society, Vol. 16, No. 2, pp. 131-138.
- Kim, B.W., Kim, H.S. (2013). "Estimation of Ground water Table using Ground Penetration Radar (GPR) in a sand tank model and at an alluvial field site." The Journal of Engineering Geology, Vol. 23, pp. 201-216. 10.9720/kseg.2013.3.201
- Kim, S.M., Choi, H., Yoon, J.S., Park, J.J. (2020). "A study on the change of cavity area through groundwater injection test under pavement cavity." Journal of the Society of Disaster Information, Vol. 16, No. 2, pp. 267-275.
- Kim, Y., Kim, H., Kim, Y., You, S.K., Han, J.G. (2017). "Experimental Study for confirmation of relaxation zone in the underground cavity expansion." Journal of Korean Geosynthetics Society, Vol. 16, No. 4, pp. 231-240.
- Lee, D.Y, Cho, N.G. (2016). "Understanding of subsurface cavity mechanism due to the deterioration of buried pipe." Journal of the Korean Geotechnical Society, Vol. 32, No.12, pp. 33-43. 10.7843/kgs.2016.32.12.33
- Park, J.J., Chung, Y., Hong, G. (2019). "A method for cavity scale estimation based on ground-penetration radar(GPR) explorations: An experimental study." Advances in Civil Engineering, Vol. 2019, 1365759. 10.1155/2019/1365759
- Park, J.J., Kim, I.D. (2020). "Analysis of the under pavement cavity growth rate using multi-channel GPR equipment." Journal of the Society of Disaster Information, Vol. 16, No. 1, pp. 60-69.
- Pyke, K., Eyuboglu, S., Daniels, J.J., Vendl, M. (2008). "A controlled experiment to determine the water table response using ground penetration radar." Journal of Environmental and Engineering Geophysics, Vol. 13, pp. 335-342. 10.2113/JEEG13.4.335
- Publisher :The Korean Society of Disaster Information
- Publisher(Ko) :한국재난정보학회
- Journal Title :Journal of the Society of Disaster Information
- Journal Title(Ko) :한국재난정보학회논문집
- Volume : 18
- No :2
- Pages :261-268
- DOI :https://doi.org/10.15683/kosdi.2022.6.30.261