棉花滩水电站工程施工组织方案.pdf

福建棉花滩水电站工程 施工组织设计 中国水利水电闽江工程技术局 目 录 第 1 章第 1 章 概概 述述...............................................................................................................................1-1 1.1 工程概况 ...............................................................................................................................1-1 1.2 地形和地质 ...........................................................................................................................1-1 1.3 水文和气象 ...........................................................................................................................1-1 1.4 主要工程量 ...........................................................................................................................1-2 1.5 主要控制性施工进度............................................................................................................1-2 1.6 工程特点 ...............................................................................................................................1-3 1.7 主要施工方法........................................................................................................................1-3 1.7.1 导流...............................................................................................................................1-4 1.7.2 坝基开挖.......................................................................................................................1-4 1.7.3 大坝混凝土施工方案 ...................................................................................................1-4 1.7.4 模板...............................................................................................................................1-4 第 2 章第 2 章 施工组织机构施工组织机构.....................................................................................................................2-5 第 3 章第 3 章 施工总体布置施工总体布置.....................................................................................................................3-6 3.1 布置条件 ...............................................................................................................................3-6 3.1.1 工程区地形 ...................................................................................................................3-6 3.1.2 交通条件.......................................................................................................................3-6 3.1.3 建设单位提供的大坝标营地........................................................................................3-6 3.1.4 砂、石料场 ...................................................................................................................3-1 3.1.5 环境保护要求 ...............................................................................................................3-1 3.1.6 供电条件.......................................................................................................................3-2 3.1.7 施工通讯.......................................................................................................................3-2 3.1.8 建设单位在桂竹桥头设有 0 号柴油加油站。............................................................3-2 3.2 布置特点 ...............................................................................................................................3-2 3.3 风、水、电及通讯系统布置................................................................................................3-2 3.3.1 供风...............................................................................................................................3-2 3.3.2 供水...............................................................................................................................3-3 3.3.3 施工用电.......................................................................................................................3-7 3.3.4 施工通讯.......................................................................................................................3-8 3.4 场内施工道路布置................................................................................................................3-8 3.4.1 营地施工道路 ...............................................................................................................3-8 3.4.2 大坝基坑内的施工道路 ...............................................................................................3-8 3.4.3 其他交通道路 .............................................................................................................3-10 3.5 营地规划 .............................................................................................................................3-10 3.5.1 1 号营地布置 ...............................................................................................................3-10 3.6 砂石开采、加工系统及混凝土拌合系统..........................................................................3-12 3.6.1 背头坑采石场 .............................................................................................................3-12 3.6.2 青溪天然砂料场..........................................................................................................3-12 3.6.3 砂石加工及混凝土拌合系统......................................................................................3-12 3.7 碴场规划 .............................................................................................................................3-12 3.8 其他辅助设施......................................................................................................................3-13 3.8.1 背头坑采石场辅助设施 .............................................................................................3-13 3.8.2 青溪砂料场辅助设施 .................................................................................................3-13 3.8.3 火工品库.....................................................................................................................3-13 3.8.4 供油.............................................................................................................................3-13 3.8.5 现场指挥中心 .............................................................................................................3-13 3.8.6 现场停车场及其他 .....................................................................................................3-14 第 4 章第 4 章 砂石料和拌合系统的设计与施工砂石料和拌合系统的设计与施工...................................................................................4-15 4.1 砂石料系统 .........................................................................................................................4-15 4.1.1 生产规模.....................................................................................................................4-15 4.1.2 生产工艺流程 .............................................................................................................4-16 4.1.3 工厂的布置 .................................................................................................................4-17 4.1.4 骨料的存储及运输 .....................................................................................................4-18 4.1.5 砂石骨料的质量控制 .................................................................................................4-19 4.1.6 砂石料工厂的电气控制 .............................................................................................4-21 4.2 混凝土拌合系统..................................................................................................................4-22 4.2.1 拌合系统生产强度计算 .............................................................................................4-22 4.2.2 混凝土拌合系统的布置 .............................................................................................4-22 4.2.3 水泥和粉煤灰的贮运 .................................................................................................4-23 4.2.4 砂石骨料的贮运 .........................................................................................................4-23 4.2.5 混凝土的运输 .............................................................................................................4-23 第 5 章第 5 章 施工总进度施工总进度.......................................................................................................................5-25 5.1 编制依据和原则..................................................................................................................5-25 5.1.1 编制依据.....................................................................................................................5-25 5.1.2 编制原则.....................................................................................................................5-25 5.2 施工控制性进度..................................................................................................................5-26 5.3 施工程序及工期..................................................................................................................5-28 5.3.1 临建工程.....................................................................................................................5-28 5.3.2 导流工程.....................................................................................................................5-29 5.3.3 主体工程施工 .............................................................................................................5-29 5.4 施工关键线路......................................................................................................................5-31 第 6 章第 6 章 施工测量、水文和安全监测施工测量、水文和安全监测...........................................................................................6-33 6.1 施工控制测量和放样..........................................................................................................6-33 6.1.1 测量资料复测 .............................................................................................................6-33 6.1.2 施工测量.....................................................................................................................6-33 6.2 水文预报方法......................................................................................................................6-35 6.3 安全监测 .............................................................................................................................6-35 6.3.1 原型观测项目 .............................................................................................................6-35 6.3.2 外部观测部分 .............................................................................................................6-36 6.3.3 内部观测部分 .............................................................................................................6-36 6.3.4 施工观测及记录 .........................................................................................................6-37 第 7 章第 7 章 施工导流施工导流...........................................................................................................................7-38 7.1 水文、气象、地质条件......................................................................................................7-38 7.2 施工导流标准......................................................................................................................7-39 7.2.1 围堰级别.....................................................................................................................7-39 7.2.2 围堰设计标准 .............................................................................................................7-40 7.2.3 导流方式.....................................................................................................................7-40 7.3 围堰设计 .............................................................................................................................7-40 7.3.1 围堰结构型式的选择 .................................................................................................7-40 7.3.2 围堰设计.....................................................................................................................7-40 7.4 围堰施工 .............................................................................................................................7-43 7.4.1 围堰施工布置 .............................................................................................................7-43 7.4.2 截流施工.....................................................................................................................7-44 7.4.3 围堰闭气.....................................................................................................................7-44 7.4.4 基坑排水.....................................................................................................................7-45 7.5 上、下游混凝土围堰施工..................................................................................................7-45 7.5.1 土石方开挖 .................................................................................................................7-46 7.5.2 常态混凝土浇筑 .........................................................................................................7-46 7.5.3 碾压混凝土施工与试验研究......................................................................................7-46 7.6 导流洞堵头施工..................................................................................................................7-47 7.7 围堰施工进度安排..............................................................................................................7-48 7.8 施工期的安全渡汛及下闸蓄水..........................................................................................7-49 7.8.1 安全渡汛.....................................................................................................................7-49 7.8.2 导流洞闸门沉放 .........................................................................................................7-49 第 8 章第 8 章 大坝基础开挖大坝基础开挖...................................................................................................................8-50 8.1 概述 .....................................................................................................................................8-50 8.2 施工布置 .............................................................................................................................8-50 8.2.1 施工道路布置 .............................................................................................................8-50 8.2.2 风、水系统布置 .........................................................................................................8-50 8.2.3 生产辅助设施布置 .....................................................................................................8-50 8.3 开挖程序及工艺流程..........................................................................................................8-51 8.3.1 施工程序.....................................................................................................................8-51 8.3.2 开挖方法和参数选择 .................................................................................................8-52 8.3.3 覆盖层土方开挖 .........................................................................................................8-52 8.3.4 预裂爆破....................................................................................................................