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http://dx.doi.org/10.14481/jkges.2020.21.3.5

Filed Applicability Evaluations of Restoration Material for Underground Cavities Formed by Ground Subsidence  

Bang, Seongtaek (Department of Construction & Disaster Prevention Engineering, Kyungpook National University)
Baek, Seungju (Department of Disaster Prevention & Environmental Engineering, Kyungpook National University)
Publication Information
Journal of the Korean GEO-environmental Society / v.21, no.3, 2020 , pp. 5-11 More about this Journal
Abstract
Recently, ground pits that have been occurring frequently in urban areas are hindering traffic flow and causing property damages and loss of human life, acting as factors that are threatening the safety of citizens. Therefore, sunken ground must be quickly restored and provisions must be made for additional damage but current domestic detailed standards regarding ground pits and accurate definitions regarding causes and measures to be taken for reoccurrences are lacking. Restoration methods of sunken ground include backfilling by reusing sunken soil or other fill material and paving the road and while this is the most often used method, this only prevents ground from sinking temporarily and can not serve as a fundamental solution. Also, additional ground pits can occur on ground that is reinforced using this method due to faulty backfill material or faulty hardening. This study used Eco-friendly High-Strength Material (EHSM) as restoration material that can be used in the restoration of underground cavities that have occurred due to ground subsidence to analyze the engineered characteristics of modified dredging clay and test pieces made from changed ratios of EHSM and weathered granite soil were uniaxial compression tests were conducted and freezing-thawing tests were conducted to study strength properties according to environmental changes of restoration material, and after tests were concluded by each level, uniaxial compression tests and dynamic elasticity tests were conducted for intensity analysis. Also, to evaluate strength characteristics of the restored ground, dynamic plate load tests were conducted to verify the improvement effectiveness of the restored ground.
Keywords
Ground subsidence; Underground cavity; Freezing-thawing test; Dynamic plate load test;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
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