唐镇新市镇D-01-04地块唐城绿地项目基坑围护专项方案第一章工程概况.............................................31.1一般概况：............................................31.2周围环境概况：.........................................31.3地基土构成与特征.......................................31.4地下水.................................................41.4.1潜水41.4.2、地下水及土的腐蚀性.....................................................................................41.4.3不利地质条件.....................................................................................................41.5工程概况...............................................41.6基坑围护设计...........................................51.6.1围护总体概况：.................................................................................................51.6.2基坑安全等级.....................................................................................................51.6.3围护方案选型：.................................................................................................51.6.4围护体系简述：.................................................................................................51.6.5基坑降排水........................................................................................................61.6.6基坑放坡............................................................................................................61.7围护工程量.............................................61.8编制依据...............................................61.8.1本基坑围护施工方案编制依据：...................................................................61.8.2相关规范：.....................................................................................................6第二章施工部署.............................................72.1组织机构的建立.......................................72.2施工总部署.............................................72.2.1图纸会审及技术交底工作.............................................................................72.2.2现场总部署...........................................82.2.3物资条件准备.................................................................................................82.2.4做好职工入场教育工作.................................................................................82.3施工现场平面布置......................................8第三章基坑施工阶段主要技术措施及方案.........................83.1测量方案..............................................83.1.1测量施工概述....................................................................................................83.1.2施工测量方法....................................................................................................93.1.3测量精度主要保证措施....................................................................................93.1.4测量仪器的配置................................................................................................93.2双轴水泥土搅拌桩施工..................................93.2.2准备工作...........................................103.2.3搅拌桩施工步骤..............................................................................................103.3放坡支护.............................................123.4降水方案.............................................123.4.1降水目的.....................
