在旧城改造中使用废弃物加粘土处理地基某综合楼属拆除旧房后的再建工程，其东侧有一条暗浜，最大深度为自然地面下３．６ｍ，暗浜深入东外墙的内部（西侧）约３ｍ，南北两端间基本呈直线分布。根据地质情况和施工所具备的条件，综合考虑决定用置换法进行地基处理，将暗洪... The use of waste and clay in the reconstruction of the old city. A composite building is a reconstructed project after the old house is demolished. On the east side there is a dark ledge with a maximum depth of 3.6m below the natural ground. (west side) is about 3m, and the north and south ends are basically linearly distributed. According to the geological conditions and the conditions for construction, comprehensive consideration shall be used to determine the foundation treatment with the replacement method.