| Title |
Applications of Improved Low-Flow Mortar Type Grouting Method for Road Safety and Constructability in Dangerous Steep Slopes |
| Authors |
최기성(Choi, Gisung) ; 김석현(Kim, Seokhyun) ; 김낙석(Kim, Nakseok) |
| DOI |
https://doi.org/10.12652/Ksce.2020.40.4.0409 |
| Keywords |
저유동성 몰탈형 그라우팅;자동화그라우팅;적용성;지하수 유출;토립자 유출;부등침하 Low-flow mortar grouting;Auto grouting;Applications;Ground-water outflow;Outflow of soil-particulate;Unequal settlement |
| Abstract |
Low-flow mortar injection method grouting technology was selected and the traffic area was preserved as much as possible in order to secure safety for road traffic when the outflow and subsidence of landfill occurred due to ground-water, and etc. In particular, the current existing method was newly improved since there are risks of damage such as hydraulic fracturing at the lower part of the road, spilling of soil particles on steep slopes, and bumps on the road due to excessive injection pressure during construction. This study was carried out at the site of reinforcement work on the road as a maintenance work for the danger zone for collapse of the steep slope of the 00 hill, which was ordered from the 00 city 00 province. The improved low-flow mortar type grouting method adopted a new automated grouting management system and especially, it composites the method for grouting conditions decision by high-pressure pre-grouting test and injection technology by AGS-controlled and studied about grouting effect analysis by using new technology. By applying the improved low-flow mortar type grouting method, it was possible to lay the groundwork for road maintenance work such as the prevention of subsidence of old roads, uneven subsidence of buildings and civil engineering structures, and of soil leakage of ground-water spills. Furthermore, the possibility of application on future grouting work not only for just construction that prevents subsidence of old roads but also for various buildings and civil engineering structures such as railroads, subways, bridges, underground structures, and boulder stone and limestone areas was confirmed. |