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时间:2020-02-28
《某路桥工程有限公司虎尾隧道施工方案措施.doc》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、目录一、编制依据···········································2二、工程概况···········································2三、工期安排···········································3四、施工方案···········································31、洞门工程·········································32、洞口管棚施工························
2、···········43、隧道施工附助设施································74、洞身主要工序的施工方案···························85、洞身掘进·········································106、围岩监控测量·····································307、预防突水技术措施································338、结构防水········································
3、359、仰拱施工·······································3710、二次衬砌施工···································3811、洞内路面······································4012、隧道供配电系统设备安装及防火涂料施工············5413、交安设施施工····································64五、质量保证措施·······································68六、质量保证措施·
4、······································70七、工期保证措施·······································71一、编制依据1、本工程的《招标文件》2、《327国道至包茂高速黄陵出口连接线改建工程施工图》3、施工现场实地踏勘所得资料;4、我单位同类工程施工经验及现有施工管理水平、技术水平、科研水平、机械设备配套能力以及资金投入能力。5、国家和建设部等颁发的有关施工技术、环保、安全质量验收规范、标准、法规文件。二、工程概况1、327国道至包茂高速黄陵出口连接线改造工程,路线起点K0+000接包茂
5、高速黄陵出口收费站,延旧路北侧新建桥梁隧道,与旧路按分离路基双侧单行,至鼎湖路交叉处与旧路合并按整体路基加宽旧路。终点K1+615接在轩辕大道。路线全长1.615Km。该项目是黄陵县与包茂高速连接的主要道路。项目建成后将提高县城车辆上下高速的包茂高速通行能力。2、本标段为二标段,属桥隧标,起止桩号为K0+138.48~K0+707.02,全长569.56m。其中桥梁2座/152.08m,隧道1座/349m,路基68.48m。隧道工程施工概况本工程共设隧道1座,如下表2-4-1所示。隧道名称起止桩号洞门形式长度(m)围岩虎尾隧道K0+228+K0+577端墙式
6、端墙式349四级、五级3、虎尾隧道:隧道长349m,隧道平面为进口段位于700m圆曲线内,洞身及隧道出入口为直线,建筑界限采用单洞净宽10.0m,建筑界限高度5.0m,内轮廓净高6.93m,最大埋深40m,进口位于包茂高速黄陵出口侧,出口位于黄陵县城侧,隧道走向为西南—东北走向,距离原隧道直线距离25m,洞内及出口为直线隧道,隧道纵坡采用单向-2.253%的下坡。三、工期安排计划2016年8月1日,8月20日完成进口边仰坡、管棚施工,8月21日开始掘进,9月10开始施工仰拱,9月30二衬开始施工,12月1日掘进完毕(贯通),12月30日二衬施工完毕,2017
7、年1月20日明洞施工完毕。四、施工方案1、洞门工程虎尾隧道起讫里程K0+228~K+577,端墙式洞门。计划单端掘进,从隧道进口(西安侧)开始掘进。隧道利用原便道可直接到达隧道口。隧道右侧与原来公路之间采用2m高围挡隔离,洞口采用管棚施工,中心留核心土尤为重要,施工时需加强管理,周围做好排水沟。按照施工顺序在开挖过程自上而下分层开挖。施工机械以挖掘机为主,遇地层坚硬石质人工打眼松动爆破,运输采用自卸车。洞口开挖后的边仰坡面按设计整修平整,及时施工砂浆锚杆并挂网喷护,以防风化、雨水渗透而坍塌或滑坡。同时做好排水设施。洞口段明洞采用明挖法施工:明洞入口长8m,出
8、口长5m,采用明挖二衬台车施工,隧道掘进后以早施工明
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