TY - JOUR AU - Ken-ichi Shishido, AU - Shinya Inazumi, PY - 2021/02/27 Y2 - 2024/03/29 TI - ASSESSMENT ON LEAKAGE RISK OF SIDE IMPERVIOUS WALLS AT COASTAL LANDFILL SITES JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 16 IS - 54 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/2639 SP - 86-93 AB - <p>An evaluation method that can express the local leakage of leachate from joint sections in steel <br>pipe sheet pile (SPSP) cutoff walls is discussed in this study. In particular, the evaluation of environmental <br>feasibility (containment of leachates containing toxic substances) considering a three-dimensional arrangement <br>and hydraulic conductivity distribution of the joint sections in the SPSP cutoff wall is compared with an <br>evaluation that generally uses the equivalent hydraulic conductivity. This equivalent hydraulic conductivity <br>assumes that the joint section and the steel pipe are integrated; therefore, the hydraulic conductivity is <br>substituted with a uniform permeable layer. However, in an evaluation that employs the equivalent hydraulic <br>conductivity, it is difficult to consider the local leakage of leachate containing toxic substances from the joint <br>sections in the SPSP cutoff wall. This paper concluded that evaluations of the environmental feasibilities of <br>the SPSP cutoff walls with joint sections must take into account the local leakage of leachates containing toxic <br>substances from the joint section.</p> ER -