隧洞衬砌技术方案VIP免费

1/11CB01施工技术方案申报表（承包［2014］技案001号）合同名称：乌江彭水水电站库区新田乡内涝处理工程II标段合同编号：/致：湖北长峡工程建设监理有限公司新田乡内涝处理工程监理站我方今提交乌江彭水水电站库区新田乡内涝处理工程II标段工程（名称及编码）的：■隧洞洞身衬砌施工方案请贵方审批。承包人：（全称及盖章）项目经理：（签名）日期：年月日监理机构签发审批意见：监理机构：（全称及盖章）：总监理工程师：日期：年月日发包人意见：发包人：负责人：日期：年月日说明：本表一式4份，由承包人填写。监理机构审签后，随同审批意见，承包人、监理机构、发包人、设代机构各1份。2/11乌江彭水水电站库区新田乡内涝处理工程Ⅱ标段隧洞洞身衬砌施工方案重庆市天地人实业有限公司乌江彭水水电站库区新田乡内涝处理工程项目部二〇一四年二月3/11目录一．工程概况······················································11.1概述·····················································11.2隧洞衬砌工程量···········································11.3砼施工总布置·············································1二.砼施工工艺·····················································2三．砼施工方案····················································23.1洞身段砼分序、分段、分块·································23.2洞身衬砌混凝土施工工艺···································3四．工期安排······················································6五.砼施工质量控制·················································6六.施工安全措施···················································71/11一．工程概况1.1概述隧洞原设计长1184m，设计变更后隧洞增长至1198m，其中全断面衬砌段660m，底板衬砌段538m。洞身衬砌成型后底宽6m，高6.3m的城门洞型。全断面衬砌段采用40cm厚钢筋混凝土衬砌，底板衬砌段底板采用15cm厚C25素混凝土衬砌，其中K2+1015～K2+1180底板衬砌段采用40cm厚钢筋砼衬砌。隧洞全洞段底板前期已浇筑，现剩660m全断面衬砌段边墙顶拱衬砌。1.2隧洞衬砌工程量隧洞衬砌工程的主要工程量：设计C25混凝土浇筑约4485m3，钢筋制安约405t，橡胶止水约661m。1.3砼施工总布置1.3.1施工道路布置施工道路：根据前期已衬砌隧洞底板作为洞身衬砌施工道路。1.3.2施工用电线路布置采用开挖、混凝土浇筑所形成的系统。从变压器的低压端接至工作面。洞内动力线与照明线分开布置。洞内照明采用36V低压灯泡，每20米安装100W灯泡一只，照明线挂在距底板2.0m位置。输电线路采用95mm2四芯电缆，电源分别由洞外系统变压器接入。1.3.3混凝土浇筑施工机械布置洞内混凝土衬砌采用1台HBT60混凝土泵，配合2台4m3砼罐车，由砼罐车运输至工作面，再由混凝土泵输送至仓内。2/11二.砼施工工艺隧洞衬砌工艺流程如图（2-1隧洞衬砌混凝土施工工艺流程图）下所示。图2-1隧洞衬砌混凝土施工工艺流程图三．砼施工方案隧洞洞身砼衬砌段长660m，每18m分缝，共分37段。3.1洞身段砼分序、分段、分块导流隧洞洞身砼浇筑分两序进行，Ⅰ序施工底板两侧40cm侧墙；Ⅱ序用钢模台车对侧墙、顶拱一次砼浇筑。洞身混凝土底板两侧40cm混凝土采用木模浇筑，边墙和顶拱采用钢模台车分段依次浇筑。洞身分段原则按每18m划分，部分部位根据围岩情况进行。侧墙和侧顶拱一起浇筑，侧墙顶拱混凝土测量放线钢筋制安止水、伸缩缝、埋件安装清仓、...