ICS93.020 CCSP10DB4419 东莞市地方标准 DB4419/T22—2024 工程勘察岩土层划分技术标准 Technicalstandardforgeotechnicalstratificationinengineeringinvestigation 2024-12-12发布 2025-01-01实施 东莞市市场监督管理局 发布 DB4419/T22—2024 I目  次 前言......................................................................................................................................................................II 1范围.................................................................................................................................................................1 2规范性引用文件............................................................................................................................................1 3术语和定义....................................................................................................................................................1 4基本规定........................................................................................................................................................1 4.1岩土层划分依据应包括以下基础资料：.............................................................................................2 4.2划分原则.................................................................................................................................................2 5地形地貌........................................................................................................................................................2 5.1地形..........................................................................................................................................................2 5.2地貌..........................................................................................................................................................2 6区域地质........................................................................................................................................................2 6.1地层..........................................................................................................................................................2 6.2岩石..........................................................................................................................................................3 6.3地质构造.................................................................................................................................................3 7地下水.............................................................................................................................................................3 7.1孔隙水.....................................................................................................................................................3 7.2裂隙水.....................................................................................................................................................4 7.3岩溶水.....................................................................................................................................................4 7.4地下水补给、径流与排泄.....................................................................................................................4 7.5地下水动态.............................................................................................................................................4 8岩土体分层....................................................................................................................................................4 8.1土体..........................................................................................................................................................4 8.2岩体..........................................................................................................................................................5 附录A（资料性）东莞市地形地貌.............................................................................................................11 附录B（资料性）东莞市区域地质...............................................................................