下宅隧道初期支护施工方案(首件)目 录1、编制依据..........................................................................................................................21.1 编制依据.....................................................21.2 适用范围.....................................................22 工程概况..............................................................................................................................22.1 工程概况.....................................................22.2 工期计划.....................................................42.3 施工场地布置.................................................42.4 主要技术手段.................................................52.5 主要工程数量.................................................52.6 不利条件.....................................................62.7 有利条件.....................................................65、施工方案和方法.............................................................................................................95.1 施工前准备...................................................95.2 施工工艺.....................................................96、质量保证措施................................................................................................................216.1 质量保证体系................................................216.2 管理方针与质量目标..........................................246.3 质量保证措施...............................................24七、工期保证措施..............................................................................................................307.1 工期保证管理体系............................................307.2 为了确保工期,特制定以下保证措施............................308、安全保证体系及保证措施..........................................................................................318.1 安全目标....................................................318.2 安全生产管理组织机构..........................