실내모형시험을 통한 도로함몰 매커니즘에 대한 기초적 연구

다국어 초록 (Multilingual Abstract)

PURPOSES: This study identifies the causes and the mechanism of the occurrence of underground cavities. METHODS: A case study on cave-in and a series of model tests with a small soil chamber were conducted. RESULTS: A hypothesis about the mechanism of the cave-in in road was established, and the basic influencing factors on underground cavity expansion were identified. CONCLUSIONS: It was found that the characteristics of shear strength of soil and direction of water flow had a larger influence on cavity formation and expansion than the characteristics of internal erosion. In addition, large cavities suddenly expanded when cavities were caused owing to breakage of buried sewer pipe.

목차 (Table of Contents)

• 1. 서론
• 2. 사례분석을 통한 도로함몰의 기본적인 원인및 매커니즘 추론
• 3. 도로함몰 특성 평가를 위한 모형토조 시험
• 3.1. 모형토조 시험장치 및 시험절차
• 3.2. 모형토조 예비실험 및 분석
• 4. 결론 및 고찰
• REFERENCES

참고문헌 (Reference)

1 Korea Environment Institute, 2014

2 Benelli S., "The Scaling Law of Piping Erosion" 27-31, 2007

3 Lin K., "Strength Reduction of Cohesionless Soil due to Internal Erosion Induced by One-dimensional Upward Seepage Flow" 52 (52): 698-711, 2014

4 Su, W., "Static Strength Evaluation of Cohesionless Soil with Oversize Particles" Washington State University 1989

5 Brown, A. J., "Progress in Assessing Internal Erosion"

6 Sato M., "Model Test to Investigate the Influence of Buried Structures on the Generation of Subsurface Cavities; 地盤內空洞生成における地中埋設軀體影響に關する模型實驗" 63 (63): 399-402, 2011

7 Seoul City, "Mechanism of Cavity Development and ountermeasures for the Prevention of Cave-in in Road" 2015

8 Seoul City, "Management Policy for Cave-in in Road in Seoul City" 2015

9 U. S. Department of the Interior Bureau of Reclamation, "Internal Erosion, Dam safety Risk Anaysis Best Practices" 2010

10 Sato M., "Influence of Underground Structure on Cavity Formation due to Various Conditions of Water Flow" Advanced in Transportation Geotechnics 617-622, 2012

11 Lin K., "Experimental Investigations on Suffusion Characteristics and its Mechanical Consequences on Saturated Cohesionless Soil" 54 (54): 713-730, 2014

12 Hewage I., "Evaluation of Ground Loosening Behavior and Mechanical Properties of Loosened Sand Associated with Underground Cavities" U Tokyo Repository 2012

13 Sato M., "Effects on Internal Erosion on Mechanical Properties Evaluated by Triaxial Compression Tests" 2015

14 Sato M., "Effects of Buried Structures on the Formation of Underground Cavity" 1769-1772, 2013

15 Kuwano R., "Defects of Sewer Pipes Causing Cave-in’s in the Road" 2006

16 Seoul City, "Cause of cavity in Seokchon Underpass and Special Control Measures for Cave-in in Road" 2014

17 Kuwano R., "Basic Study for Prevention of Ground Cave-in; 地盤陷沒未然防止のための基礎的檢討" 61 (61): 673-677, 2009

18 Tony L. Wahl, "A Comparison of the Hole Erosion Test and Jet Erosion Test" 2010

19 Kuwano R., "A Case Study of Ground Cave-in due to Large Scale Subsurface Erosion in Old Land Fill" 265-271, 2012