Macro Earthquake Hazard Map For Liquefaction Potential Using Big Data Of Site Investigation

The Korean government recently has been focusing on minimizing natural disaster damages including earthquake damage under the slogan 'Safe Korea'. Part of this effort is establishment of GIS system to prevent earthquake hazards such as liquefaction. In takes a study on application of various soil investigation data to find out the risk of liquefaction caused by an earthquake. This study made the liquefaction hazard map by developing an Excel spreadsheet based on simplified method for liquefaction potential using the site amplification coefficient of metropolitan area with high population density. For this, 14,040 borehole in-situ data from metropolitan area were collected. The Excel spreadsheet that utilizes this simplified liquefaction evaluation takes significantly less time than the site response analysis was based on seismic design criteria of Korea. It will also be a big help in creating a liquefaction hazard map for a wide area, where the risk has to be evaluated using a lot of site investigation data.