室外电缆沟施工方案.doc

1 11 电缆沟开挖施工方案电缆沟开挖施工方案 Work Method of Cable Trench Excavation 编编 制 制 Compiled by 审审 核 核 Reviewed by 2009 年 10 月 21 日 October 21 2009 2 11 目目 录录 Content 一一 概况概况 OVERVIEW 3 1 1 工程概况工程概况 PROJECT OVERVIEW 3 1 2 施工范围施工范围 SCOPE OF WORK 3 二 编制依据二 编制依据 COMPILATION BASIS 4 三 三 施工工艺流程施工工艺流程 CONSTRUCTION PROCESS 4 四四 前期准备前期准备 PREPARATIONS 4 4 1 技术准备技术准备 TECHNICAL PREPARATION 4 4 2 材料准备材料准备 MATERIAL PREPARATION 5 4 3 主要机具准备主要机具准备 MAIN EQUIPMENTS PREPARATION 5 4 4 作业环境准备作业环境准备 OPERATING ENVIRONMENT PREPARATIONS 5 五五 电缆沟施工电缆沟施工 CABLE TRENCH CONSTRUCTION 5 5 1 电缆沟测量 定位电缆沟测量 定位 CABLE TRENCH MEASUREMENT AND POSITIONING 5 5 2 电缆沟开挖电缆沟开挖 CABLE TRENCH EXCAVATION 6 六六 质量控制质量控制 QUALITY CONTROL 7 6 1 电缆沟外形尺寸允许偏差表电缆沟外形尺寸允许偏差表 ALLOWABLE DEVIATED EXTERNAL DIMENSIONS OF CABLE TRENCH TABLE 7 6 2 应注意的质量问题应注意的质量问题 QUALITY ISSUES 8 七七 成品保护成品保护 FINISHED PROTECTION 8 八八 施工记录施工记录 CONSTRUCTION OF RECORD 8 九九 安全生产 文明施工要求和措施安全生产 文明施工要求和措施 SAFETY AND CIVILIZED CONSTRUCTION REQUESTS AND MEASURES 9 附厂区电缆沟图 附厂区电缆沟图 ATTACHED CABLE TRENCH DRAWING 9 3 11 一一 概况概况 Overview 1 1 工程概况工程概况 Project Overview 项目名称 本工程涉及三个变电站 分别是现有的 220 35kV A472 变电站 现有的 35 10kV B301S 变电站 以及新建的 35 10kV C581 变电站 工作内容为三个变电站之间和从三个变电站接至 MV 用户 的电力电缆 控制电缆 接地电缆敷设所需电缆沟的开挖工程 The project involves three substations namely the existing 220 35kV A472 substation the existing 35 10kV B301S the 35 10kV C581 substation and a new substation This is the power control and grounding cable trench excavation project among three substations and for MV users connected to the three substations 1 2 施工范围施工范围 Scope of Work 1 由 A472 变电站引出 3 路 35kV 出线 其中 一路引至 B301S 建筑 35 10kV 变电站 原 1 主变 原 1 主变电缆将抽出 与新增 4 主变连 接 另两路引至 35 10kV C581 变电站 1 主变和 2 主变 回路采用 FS YJY 26 35kV 1 300mm2 单芯电缆 直埋敷设 去 C581 的两路 35kV 线路 敷设时沿不同路径 以避免两回线路同时 受损 Pull three 35V outgoings from A472 substation Of which The first outgoing is led to B301S Building 35 10kV substation the original one main transformer pull the original one main transformer cable out and connect to the adding 4 main transformer the other two outgoings are led to 35 10kV C581 1 and substation 2 main transformer Use FS YJY 26 35kV 1 300mm2 single core cables for Loop and buried pulling Two 35kV lines to C581 are laid along different paths to avoid damage of the two loops 2 由 B301S 变电站引出 7 路 10kV 出线 全部引至 B399 中心制冷站 回路采用 10kV 截面为 95mm2 的三芯铠装电缆 由 B301S 南面现有的电缆井引出直埋至装置 Pull 7 10kV outgoings from B301S substation to B399central refrigeration station Loop uses 10kV three core armored cable with cross section 95mm2 and pull out from the existing cable well in the south of B301S then buried lay to the device 3 由 C581 引出 10 路 10kV 线路 分别为 A507 的四台变压器 B551 的两台变压器 B553TDA 装 置氢气压缩机 2 台 C521 盐酸装置氯气压缩机 1 台 盐酸压缩机 1 台提供电源 其中 变压器 回路采用 10kV 截面为 185mm2 的三芯铠装电缆 马达回路采用 10kV 截面为 95mm2 的三芯铠 装电缆 以上电缆线路均沿规划路径埋地敷设 10 10kV lines led from C581 are used to supply power to A507 s four transformers B551 two transformers B553TDA 2 sets of hydrogen compressor unit C521 hydrochloric acid chlorine gas compressor unit and hydrochloric acid compressor unit respectively Among them transformer circuit uses x 3 core armored cable with 10kV cross section 185mm2 motor circuit uses three core armored cable with 10kV cross section 95mm2 All cable lines will be laid underground along the planning path 4 接地电缆回路 Ground cable loop 从 A472 敷设一根 95mm2 裸铜线去 C581 同时从 C581 敷设四根 95mm2 裸铜线 分别引至 B551 A507 B553 和 C521 作等电位联结 以上电缆线路均沿规划路径埋地敷设 Lay a 95mm2 bare copper wire to C581 from A472 Meanwhile lay four bare copper wires to B551 A507 B553 and C521 for equipotential bonding All cable lines will be laid underground along the planning path 5 本工程电缆沟走向如下 The cable trench directions are as follows 电缆沟南线为 A472 至 C581 全长约 850 米 根据 K K 断面图 开挖深度为 1 米 沟槽底宽 0 6 4 11 米 沟槽面宽约 1 1 米 Cable trench south line is from A472 to C581 about 850 meters long According to KK sectional drawing excavation depth is of 1 meter with trench bottom width 0 6 m and face width1 1 m 电缆沟北线为 A472 至 C581 和 B301 其中共线约 220 米 根据 A A 断面图有 开挖深度为 1 米 沟槽底宽 1 米 沟槽面宽约 1 5 米 Cable trench north line is from A472 to C581 and B301 and the collinear is about 220 meters According to AA sectional drawing excavation depth is 1 meter trench with trench bottom width 1 m and face width1 5 m 至 C581 支线约 430 米 根据 E E 断面图有 开挖深度为 1 米 沟槽底宽 0 6 米 沟槽面宽约 1 1 米 至 B301 支线约 300 米 根据 B B 断面图有 开挖深度为 1 米 沟槽底宽 0 6 米 沟槽面 宽约 1 1 米 The sub line the C581 is about 430 meters According to EE sectional drawing excavation depth is 1 meter trench with trench bottom width 1 m and face width1 1 m The sub line to B301the is about 300 meters According to BB sectional drawing excavation depth is 1 meter trench with trench bottom width 1 m and face width1 1 m 二 编制依据二 编制依据 Compilation Basis 1 根据电气包 中压部分 招标文件及招标图纸编制而成 According to Electric package MV the tender and tender drawings 2 在充分研究工程的客观情况和施工特点 结合我公司类似工程施工经验的基础上编制的 Based on full study on construction characteristics and objective situation and combined with similar construction experience 3 在本方案编制过程中 严格执行国家现行建筑和安装工程施工及验收规范 规程 标准 设 计规范 具体如下 In this compilation process strictly implement current national construction and installation construction acceptance norms procedures standards and design specifications As follows 电气装置安装工程电缆线路施工及验收规范 GB50168 2006 Electrical installation cable construction and acceptance standards GB50168 2006 电气装置安装工程接地装置施工及验收规范 GB50169 2006 Electrical installation earthing construction and acceptance standard GB50169 2006 建筑电气工程施工质量验收规范 GB50303 2002 Building Electrical Construction Quality Acceptance GB50303 2002 三 三 施工工艺流程 施工工艺流程 Construction Process 前期准备 电缆沟测量 定位 确定开挖顺序 沿灰线切出槽边轮廓线 分层开挖 修整槽边 清底 preparation cable trench measurements excavation order cutting contour line along the calcareousness stratified excavation finishing cable trench edge clear up 四四 前期准备前期准备 Preparations 4 1 技术准备技术准备technical preparation 1 针对本工程特点编审详细的电缆沟施工作业指导书 及时组织图纸会审 Compile particular cable trench construction engineering guide book as per project characteristics and organize promptly drawings joint examination 5 11 2 根据上海市电力建设工程施工工艺实施细则结合本工程实际编写电缆沟施工工艺卡 并组织实 施 Compile construction technique cards according to the Shanghai Municipal Electric Power Construction Engineering Construction Technology Implementation Details and organize its implementation 3 施工人员全面了解电缆敷设来路 终点及敷设路径 Construction workers have comprehensive understanding antecedents destination and laying path of laying cables 4 2 材料准备材料准备Material preparation 根据材料计划采购所有的材料 所有材料规格型号及电压等级应符合设计要求 并有产品合格 证 Purchase materials as per the plan All materials specification models and the voltage level should meet the design requirements and have product certificates 4 3 主要机具准备主要机具准备Main equipments preparation 尖 平头铁锹 手锤 手推车 梯子 铁镐 撬棍 钢尺 坡度尺 小线或 20 铅丝等 Sharp flat head shovel hand hammers wheelbarrows ladders picks crowbars steel ruler slope foot small lead wire or 20 lead wire and so on 4 4 作业环境准备作业环境准备operating environment preparations 1 土方开挖前 应根据施工方案的要求 将施工区域内的地上 地下障碍物清除和处理完毕 Prior to earth excavation clear up obstructions on the ground or underground as per construction plan 2 建筑物或构筑物的位置或场地的定位控制线 桩 标准水平桩及基槽的灰线尺寸 必须经过检 验合格 并办完预检手续 The location building or structure and the calcareousness of site positioning control lines piles standard level pile and the groove base size must be tested qualified and finished pre screening procedures 3 场地要清理平整 做好排水坡度 在施工区域内 要挖临时性排水沟 Clean up the site and make drainage slope Excavate temporary drains in the construction area 4 夜间施工时 应合理安排工序 防止错挖或超挖 施工场地应根据需要安装照明设施 在危险 地段应设置明显标志 Arrange night construction procedures properly to prevent wrong dig or super dug Install the lighting facilities as needed and set signs in a dangerous location 5 开挖低于地下水位的基坑 槽 时 应根据工程地质资料 采取措施降低地下水位 一般要降 至低于开挖底面的 0 5m 然后再开挖 Excavate base pit groove below the groundwater level should low groundwater level based on engineering geological data to be lower than 0 5m of the underside and then excavate 五五 电缆沟施工电缆沟施工 Cable Trench Construction 5 1 电缆沟测量 定位电缆沟测量 定位cable trench measurement and positioning 1 根据出线电缆布局和电缆沟开挖现场地形条件确定出电缆沟具体走向 Determine the specific direction of cable trench of outgoing according to layout and excavation terrain conditions 2 电缆沟线路测量包括定线测量 水准测量和直接丈量 The cable trench line measurements include alignment leveling and direct measurement 定线测量要测定线路的中心线和转角 并应测量沟槽与相邻的永久性建筑物的位置关系 必要 时应在地面上设立标志 Alignment measurement needs to determine the centerline and corners and measure grooves and adjacent permanent building location relations If necessary set up ground signs 6 11 在进行沟槽水准测量时 应沿线设临时水准点 临时水准点标高值由控制水准点引测 Conduct leveling should set temporary standard points whose elevation is cited by the control measure 5 2 电缆沟开挖电缆沟开挖Cable Trench Excavation 1 开挖路线确定后 需要由管理公司和业主确认 尽量避免开挖路线下有管线 如确有管线 则 尽量选择管线较少区域开挖 The management company and the owner need to confirm excavation line Try to avoid pipeline route digging and choose less pipeline area on excavating 2 开挖前要认真调查了解地上地下障碍物 以便开挖时采取妥善加固保护措施 根据建设方提供 的现况地下管线图 进行现场调查探摸 在每个开挖路线上 每隔 30m 进行人工开挖试空井 明确整个断面有无其它管线 及其管线分布情况 采取有效措施加以保护 Investigate obstructions above and below ground before excavation to take appropriate reinforcement measures According to the underground pipeline drawings provided by the owner make site investigations At intervals of 30m on each route excavate wells manually to check whether the entire cross section has other pipelines and its distribution to take effective protection measures 3 根据基础和土质 现场出土等条件要合理确定开挖顺序 Determine excavation order rationally according to the foundation on site soil quality and other conditions etc 4 开挖时 应先沿灰线直边切出槽边的轮廓线 然后再分段分层平均下挖 Cut out the contour line along the calcareousness and then excavate with sub layer and subsection 一般粘性土可自上而下分层开挖 每层深度以 60cm 为宜 从开挖端部逆向倒退按踏步型挖掘 Generally clay can be excavated from top to bottom by layer with the appropriate depth 60cm backward excavate from the end by stepping type 碎石类土先用镐翻松 正向挖掘 每层深度 视翻土厚度而定 每层应清底和出土 然后逐步 挖掘 Gravel type soil first use pick to loose then forward excavate with each layer depth depended on the thickness of digging soil Clear the bottom and dig out the earth by layer and then excavate gradually 5 在开挖槽边弃土时 应保证边坡和直立帮的稳定 当土质良好时 抛于槽边的土方 或材料 应距槽 沟 边缘 0 8m 以外 高度不宜超过 1m 开挖基坑 槽 的土方 在场地有条件堆 放时 留足回填需用的好土 多余的土方运出 避免二次搬运 Excavate side earth should ensure the stability of the slope and upright When the soil is fine throw earth on the groove side or material 0 8m away from the pit groove edge with height more than 1m Stack backfill soil if it has conditions and move the excess earth out to avoid secondary handling 6 土方开挖部分采用人工开挖为主 部分区域在保证人员 设备安全 不损坏现有管线的基础上 采用机械开挖 槽底预留 20cm 由人工清底 开挖过程中严禁超挖 以防扰动地基 对于有地 下障碍物 管 缆 的地段由人工开挖 严禁破坏 具体如下 Mainly take manual excavation and ensure personnel and equipment safety on some parts Take mechanical excavation on the basis of not damaging the existing pipeline and set aside 20cm at the bottom for clearing by hand Ultra excavation is strictly prohibited to prevent ground disturbance For underground obstacles pipes cables parts excavate manually As follows 机械与人工相结合开挖路线 A472 至 C581 南线与北线 Mechanical and manual excavation line A472 to C581 South Line and North Line 机械开挖整个过程都有人员跟随进行指挥 在确认的机械开挖路线上进行开挖工作 机械开挖 深度不得很深 首次开挖控制在 300mm 左右 再 100mm 每次挖下去 避免破坏地下管线 如 有管线 立即进行人工开挖 Mechanical excavation should be under command and follow the 7 11 confirmed line Do not mechanically excavate too deep but first by 300mm and then 100mm each to avoid destructing pipelines If there are pipelines immediately take manual excavation C581 南线开挖到临时道路 通过其它承包商仓库的时候先不开挖断 等电缆沟开挖到最后的 时候再回头开挖这部分 开挖后并在这些地段铺上木方 When C581 South Line temporary road through the warehouse of other contractor dig down and cover with wooden poles until all cable trench is excavated to the final parts 人工开挖路线 A472 至 B301S 支线 Manual excavation line A472 to B301S Branch 在人工开挖路线上 安排人员进行开挖 不得机械开挖 开挖过程中需要小心谨慎 注意地下 管线 Arrange personnel on manual excavation line rather than taking mechanical excavation Pay attention to underground pipelines 7 土方开挖一般不宜在雨季进行 否则工作面不宜过大 应分段逐片的分期完成 The earth excavation in general should not be carried out during the rainy season or working face should not be too great and should be completed in section 雨期开挖基坑 槽 时 应注意边坡稳定 必要时可适当放缓边坡或设置支撑 同时应在坑 槽 外侧围以土堤或开挖水沟 防止地面水流入 施工时应加强对边坡 支撑 土堤等的检 查 On pluvial days excavate pit groove pay attention to slope stability If necessary low slope or set up support Meanwhile enclose embankment around the pit groove or did a ditch to prevent surface water inflow Strengthen on checking the slope support embankment etc 8 土方开挖不宜在冬期施工 如必须在冬期施工时 其施工方法应按冬施方案进行 Earth excavation should not be done in the winter period If necessary take winter program 采用防止冻结法开挖土方时 可在冻结前用保温材料覆盖或将表层土翻耕耙松 其翻耕深度应 根据当地气候条件确定 一般不小于 0 3m On prevent freezing earthwork excavation method cover insulation material before freezing or loosen topsoil with tillage depth determined by local climatic conditions generally not less than 0 3m 开挖电缆沟时 必须防止沟底基土遭受冻结 如沟槽开挖完毕至埋设电缆之间 有较长的停歇 时间 应在基底标高以上预留适当厚度的松土 或用其他保温材料覆盖 Prevent the groove base soil be frozen such as the interval between trench excavation and cable laying reserve loose soil with appropriate thickness above basement elevation or cover with other thermal insulation material 9 开槽后及时约请各有关人员验槽 验槽合格后方可进行下道工序 Invite related personnel to check the excavated trench and carry out the next working procedure after passing the examination 六六 质量控制质量控制 Quality Control 6 1 电缆沟外形尺寸允许偏差表电缆沟外形尺寸允许偏差表 Allowable deviated external dimensions of cable trench table 允许偏差项目 allowable deviation item 电缆沟外形尺寸允许偏差 allowable deviated external dimensions of cable trench table 序号 s no 项目 items允许偏差 mm allowable deviation 检验方法 test method 1标高 elevation 0mm 50mm用水准仪检查 water level check 2长度 宽度 0 mm由设计中心向两边量 拉线和尺量检查 design 8 11 length widthcenter measure and pull line on both sides and ruler inspection 3边坡偏陡 steep side slope 不允许 not allowed坡度尺检查 gradient ruler inspection 6 2 应注意的质量问题应注意的质量问题 Quality issues 1 沟底超挖 开挖电缆沟不得超过沟底标高 如个别地方超挖时 其处理方法应取得设计单位的 同意 Ultra excavation cable trench excavation shall not exceed the bottom elevation If ultra dig in some places obtain the consent of design units 4 施工顺序不合理 土方开挖宜先从低处开挖 分层分段依次进行 形成一定坡度 以利排水 The construction sequence is unreasonable earth excavation should begin from the lower place layer by layer and section by section in turn form a certain slope to facilitate drainage 5 开挖尺寸不足 电缆沟底部的开挖宽度 应根据施工需要增加工作面宽度 The excavation size is not enough Cable trench bottom width should be increased as per construction needs 6 电缆沟边坡不直不平 基底不平 应加强检查 随挖随修 并要认真验收 Slope is not straight and base is uneven strengthen inspection repair cable trench and then accept seriously 七七 成品保护成品保护 Finished Protection 1 对定位标准桩 轴线引桩 标准水准点等 挖运土时不得碰撞 并应经常测量和校核其平面位 置 水平标高和边坡坡度是否符合设计要求 定位标准桩和标准水准点应定期复测和检查是否 正确 Do not collide targeting criteria piles axis cited pile and standard level points etc on moving earth Regularly measure and check whether the plane location elevation and slope gradient are in compliance with design requirements Re measure and inspect targeting criteria piles and standard level points 2 土方开挖时 应防止邻近已有建筑物或构筑物 道路 管线等发生下沉和变形 必要时应与设 计单位或建设单位协商采取防护措施 并在施工中进行沉降或位移观测 Note subsidence and deformation of neighboring existing buildings or structures roads pipelines etc Take protective measures with design and construction unit and construct observation on settlement or displacement 3 在敷设有地上或地下管线 电缆的地段进行土方施工时 应事先取得有关管理部门的书面同意 施工中应采取措施 以防止损坏管线 造成严重事故 Conduct earthwork on the area needs to lay ground or underground pipelines cables prior to getting written consent of the relevant administrative departments On construction take measures to prevent damaging pipelines and cause serious accidents 八八 施工记录施工记录 Construction of Record 1 自互检记录 Self and mutual inspection records 2 电缆工程分项质量检验评定记录 Cable engineering sub item quality inspection and evaluation records 3 分项工程验收记录 Sub project acceptance records 九九 安全生产 文明施工要求和措施安全生产 文明施工要求和措施 Safety and Civilized Construction Requests and Measures 1 开工前应做好施工场地内的道路 开辟适当的工作面 做好检查和必要的加宽 加固工作 以 利安全施工 Build site roads and appropriate work area Widen and strengthen order to facilitate safe 9 11 construction 2 电缆沟开挖工程应注意边坡和基坑的稳定性 一般应按先深后浅的顺序施工 并应采取必要的 保护措施 Note the stability of the slope and base generally construct from deep to shallow and take necessary protective