人民路站管线保护方案

昆明市地铁首期工程土建施工十二标段人民路站管线及周边建筑物保护方案编制：审核：审批：中国中铁二局股份有限公司昆明市地铁首期工程土建施工十二标段项目经理部二○一一年九月昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司II目录1.编制说明及依据·······················································································31.1.编制说明···························································································31.2.编制依据···························································································32.管线概况································································································33.管线保护特点··························································································54.管线保护方案··························································································64.1.电力管保护方案··················································································64.1.1.电力管管线概况.....................................................................................................64.1.2.电力管线保护方案.................................................................................................74.2.煤气管保护方案··················································································84.2.1.煤气管概况.............................................................................................................84.2.2.煤气管保护措施.....................................................................................................94.3.联建、电信管道保护方案····································································104.3.1.管道概况...............................................................................................................104.3.2.施工方法...............................................................................................................134.4.电力管保护方案················································································134.4.1.管线概况...............................................................................................................134.4.2.电力管保护方案...................................................................................................145.周边建筑保护方案··················································································145.1.周边建筑物概况················································································145.2.周边建筑物保护方案··········································································156.基坑开挖管线安全措施············································································157.管线事故处理流程··················································································16昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司31.编制说明及依据1.1.编制说明人民路站地处人民路与北京路交叉口,交通繁忙,车流量大,地下管线众多,车站内电力、电信、煤气等管线在管线迁改过程中，由于无路由无法迁改至基坑外侧，最终选择横跨基坑，为基坑开挖、主体结构施工过程带来重大管线安全风险，特制订本方案。1.2.编制依据1、《人民路站管线总图》2、管线单位提供的管线资料3、自行调查管线声像资料4、《总体施工组织设计》5、地铁公司提供的其他管线保护文件6、十二标项目经理部关于管线保护的有关文件2.管线概况图2.1横跨基坑煤气管现状图昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司4图2.2横跨基坑联建管道现状图（一）图2.3横跨基坑联建管道现状图（二）昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司5图2.4横跨基坑电信管道现状图3.管线保护特点1、跨基坑地下管线种类繁杂，有电力管、煤气管、联建管道、电信管道，所需保护方式不同，保护难度大。2、管道内部管线众多，且多数管线形成缠绕，绝大部分无富余量。3、同一管道内管线产权单位众多，产权不同，交涉难度大。4、跨基坑均采用悬吊保护形式，增大开挖安全风险。5、管线与连续墙接头处存在施工缝，渗漏严重，增加围护结构安全风险。6、基坑施工处于雨季，路面雨水回灌至管线井内，倒灌回基坑，容易形成基坑积水，增加基坑开挖安全风险。7、车站为半盖挖，盖板下部悬吊管线增加盖板下部土体开挖难度及开挖时间，工期压力增大。昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司6图3.1管线众多且多数形成缠绕4.管线保护方案4.1.电力管保护方案4.1.1.电力管管线概况该电缆从桃源变电所出来后，沿人民路走向，横跨车站主体结构；电缆沟截面尺寸为1500（深）×2100mm（宽）。电缆沟根据目前开挖出的情况，底板为混凝土板，侧墙采用24墙砖砌墙，顶板为预制盖板。东端电缆沟中心北侧距设计E8-6和E8-7连续墙中间工字钢接头2.7m，南侧距设计E8-7至E8-8连续墙中间工字钢3.6m。西侧电缆沟距工字钢接头与东侧基本一致。电缆具体布置详见下图。昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司7图4.1.1电力管线位置平面图4.1.2.电力管线保护方案一、施工顺序：（1）对电缆沟内部电缆进行整理由于电缆沟内部管线较多且比较零乱，在施工前，对管沟内的电缆进行整理，将管线成捆保护。图4.1.2电力管内部管线情况图（2）破除管沟的顶板及侧墙在周边连续墙和冠梁施工完成后，破除管沟的盖板和侧墙，在破除昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司8前需通知电力部门现场查看，且破除采用人工破除，在破除过程中需小心翼翼，避免在破除过程中，砖块掉入沟内损坏电缆。（3）底部放置电缆沟和穿越钢丝绳对电缆沟底部进行开挖，为防止电缆沟整体掉落，采取分段开挖，每次开挖宽度控制在1-2m，开挖深度控制在电缆沟底50cm左右，从两侧向中间开挖。钢板与电缆沟底部需密贴。（4）架设工字钢在冠梁和格构柱联系梁间架设一道钢桁架，该桁架采用工45C双拼组成，端头进行焊接固定处理，最后通过钢丝绳将电缆沟重量传递到钢桁架上二、保护钢箱制作图4.1.3保护钢箱详图4.2.煤气管保护方案4.2.1.煤气管概况￠219煤气管为沿南北走向沿基坑纵向至十字路口，斜向转至基坑内侧，迁改后横跨基坑至东侧，与东侧￠478煤气管接驳。煤气管走向见下图。昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司9图4.2.1跨基坑煤气管走向示意图4.2.2.煤气管保护措施煤气管在东侧盖板下部施作U型槽，将煤气管置于U型槽内进行保护。图4.2.2煤气管U型槽配筋图昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司104.3.联建、电信管道保护方案4.3.1.管道概况4.3.1.1.联建管道U型槽东侧联建管道“凹“型钢筋砼槽长8.25m，宽0.8m，高0.8m，壁厚0.2m。“凹”型钢筋砼槽施工于横梁撑ZC1下。具体尺寸及配筋见图。图4.3.1联建管道断面图（一）西侧管道采用￠530半圆钢管，将管线理顺至于管道内部，上侧盖1cm厚钢板进行保护。图4.3.2联建管道保护措施图（西侧）昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司114.3.1.2.电信管道U型槽东侧电信管道“凹“型钢筋砼槽长8.25m，槽段一半与梁撑相接，另一半与盖板搭接。具体尺寸及配筋见图。联建、电信管道均需通过格构柱，格构柱位置做特殊处理。图4.3.3联建管道断面图（二）昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司12图4.3.4电信管道断面图（一）图4.3.5电信管道断面图（二）西侧电信管道采用￠530半圆钢管，将管线理顺至于管道内部，上侧盖1cm厚钢板进行保护。管线保护见下图。图4.3.6电信管道保护措施图昆明市轨道交通首期工程二号线土建十二标人民路站管线及周边建筑物保护方案中铁二局股份有限公司134.3.2.施工方法1、东侧U型槽施工东侧先施工U型槽，施工完成后，将管线转至U型槽内，铺设第一道保护层（模板），浇筑盖板垫层，绑扎盖板钢筋，将U型槽两侧钢筋与盖板（支撑梁）钢筋焊接牢固，浇筑盖板砼。2、西侧半圆钢管施工（1）破除管道上方路面砼，凿除过程中先探明管线类型、管线埋深及管线走向，同时，对作业班组做好安全技术交底。暴露管线。（2）通知管线产权单位，对管道内可以切割管线进行割接及迁改。对未能迁改管线进行管线挂牌及分类理顺，并用扎丝捆绑成束。（3）凿除管道位置连续墙砼，将割接好的