International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Basic Study on Mechanism of Cave-in in Road through Laboratory Model Tests

실내모형시험을 통한 도로함몰 매커니즘에 대한 기초적 연구

  • Received : 2016.05.12
  • Accepted : 2016.09.06
  • Published : 2016.10.17
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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.

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References

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