中建三局有限公司北京新机场工作区工程供热工程热力外线工程施工方案编制人：审核人：批准人：日期：年月日目录一、施工方案....................................................................................................................................41.工程概况.........................................................................................................................................42.编制原则和依据.............................................................................................................................42.1编制原则....................................................................................................................................42.2编制依据....................................................................................................................................43.工程特点、重点、难点分析及应对.............................................................................................53.1工程量大、施工周期长............................................................................................................54.主要施工方法...................................................................................................................................54.1施工前准备................................................................................................................................54.2.测量放线....................................................................................................................................74.3.土方开挖....................................................................................................................................74.4.阀门井及固定支墩....................................................................................................................84.5直埋保温管道安装..................................................................................................................154.6阀门的安装..............................................................................................................................194.7补偿器安装..............................................................................................................................194.8管道试压..................................................................................................................................204.9管道接口发泡绝热..................................................................................................................204.10直埋报警系统安装................................................................................................................204.11沟槽回填................................................................................................................................204.12管网的清洗、试运行............................................................................................................204.13竣工验收................................................................................................................................225.确保质量的技术保证措施.............................................................................................................225.1沟槽保护措施..........................................................................................................................225.2管口封堵...
