元江至蔓耗高速公路（玉溪段）桥梁人工挖孔桩工程专项施工方案编制：审核：批准：云南建设投资控股集团有限公司元江至蔓耗高速（玉溪段）工程建设项目经理部一分部二零一七年七月二十日目录一、工程概述......................................................................................................................................................-1-1.1工程概况..................................................................................................................................................-1-1.2工程条件..................................................................................................................................................-1-1.3平面布置图（见附件）...........................................................................................................................-7-1.4主要工程数量..........................................................................................................................................-7-1.5工程特点及施工难点................................................................................................................................-8-二、编制依据及说明..........................................................................................................................................-8-2.1编制目的..................................................................................................................................................-8-2.2编制范围..................................................................................................................................................-9-2.3编制依据..................................................................................................................................................-9-三、施工计划....................................................................................................................................................-10-3.1施工计划................................................................................................................................................-10-3.2材料、机械计划.....................................................................................................................................-10-四、人工挖孔桩施工工艺................................................................................................................................-11-4.1施工准备................................................................................................................................................-11-4.2施工工艺流程........................................................................................................................................-12-4.3桩位放样................................................................................................................................................-15-4.4土方开挖................................................................................................................................................-15-4.5石方爆破开挖........................................................................................................................................-16-4.6爆破方案设计........................................................................................................................................-17-...
