岩土工程勘察编录培训讲义

目 录 1 勘探分类和钻探技术要求..................................................................0 1.1 勘探分类 ..................................................................................................................................................................4 1.2 钻探技术和要求 ......................................................................................................................................................5 1.2.1 工程地质钻探的基本方法...............................................................................................................................5 1.2.2 钻探方法的选用.............................................................................................................................................5 1.2.3 钻孔口径和钻具规格应符合现行国家标准的规定.....................................................................................5 1.2.4 钻探点位测设.................................................................................................................................................6 1.2.5 深孔和特殊孔钻进要求.................................................................................................................................6 1.2.6 钻进过程深度丈量.........................................................................................................................................6 1.2.7钻进回次的控制..............................................................................................................................................6 1.2.8岩芯采取率的相关规定..................................................................................................................................7 1.2.9坍塌地层钻孔护壁措施..................................................................................................................................7 1.2.10钻进时防止管涌措施....................................................................................................................................7 1.2.11 钻探和取样及原位测试关系.......................................................................................................................71.2.12 钻孔记录和编录 2 勘探取样和钻孔取样技术要求..............................................................8 2.1 勘探取样分类 ..........................................................................................................................................................8 2.2 钻孔取土样技术要求 ..............................................................................................................................................8 2.2.1 钻孔取土样质量等级，可按表2.2.1划分为四个等级.............................................................................8 2.2.2 获取各级质量土试样，使用的工具和方法可按表2.2.2选择.................................................................8 2.2.3 钻孔取土器分类和技术标准.........................................................................................................................9 2.2.4 取Ⅰ、Ⅱ级土试样时，应满足下列要求...............................................................................................10 2.2.5 取Ⅲ、Ⅳ级土试样时，应满足下列要求...........................................