梁隧道施工方案.doc

目录1、编制依据及原则1.1、编制依据·············································41.2、编制原则·············································42、工程概况及主要工程数量2.1、工程概况············································52.2、主要工程数量（附件）································72.3、工程特点············································72.4、工程布置及总体设计··································73、工期计划3.1、施工总工期··········································73.2、任务划分············································73.3、施工进度计划安排····································83.4、两头掘进施工备案···································84、材料、机械设备、劳力及现场管理人员情况4.1、材料计划·············································84.2、机械使用计划及机械保障措施··························94.3、现场管理人员及劳动力组织情况·······················105、主要施工工艺5.1、总体施工方案········································115.2、具体施工方法········································115.3、施工超前预报与光面爆破·····························175.4、超前支护············································235.5、初期支护············································285.6、隧道围岩监控量测技术·······························285.7、隧道掘进通风防尘技术·······························415.8、隧道防排水施工技术·································435.9、二次衬砌整体钢模台车施工技术························476、文明施工及现场标准化管理6.1. 施工现场布置及场容场貌·····························566.2. 现场标示牌········································566.3. 管理人员挂牌上岗···································576.4. 现场材料·········································576.5. 机械设备·········································576.6. 管线布置·········································576.7. 作业面···········································586.8. 安全管理·········································586.9. 宣传工作·········································587、质保体系、安保体系及环保体系建设7.1、创优规划和质量保证措施······························587.2、安全保证体系及保证措施······························707.3、环保、水保措施·······································848、工期保证措施8.1、施工准备抓早抓紧····································888.2、施工调度高效运转····································888.3、强化施工管理·········································888.4、实行内部经济承包责任制·····························888.5、安排好冬、雨季的施工································888.6、加强机械设备管理····································888.7、确保劳力充足，高效·································889、廉政建设保证···········································8810、冬、雨季的施工措施10.1、雨季施工措施········································8910.2、冬季施工措施········································9011、农忙季节期间的施工措施11.1、农忙季节的施工安排·································9012、降低造价的措施·········································9013、附表图·····················································93省道311线内官营至临洮段公路改建工程NL2合同段堡子梁隧道实施性施工组织设计（K41+130K41+835）1、编制依据及原则1.1、编制依据1.1.1 S311线堡子梁隧道施工设计文件。1.1.2公路工程技术标准JTG B01-20031.1.3公路隧道设计规范JTG D07-2004 1.1.4公路工程地质勘查规范JTJ 064-981.1.5公路工程抗震设计规范JTJ 004-891.1.6公路隧道通风照明设计规范JTJ 026.1-19991.1.7公路隧道施工技术规范JTG F60-20091.2、编制原则1.2.1严格按照设计标准、现行施工规范和质量验收标准编写，正确组织施工，确保工程质量优良。1.2.2根据工期要求，抓住关键线路合理安排施工进度，搞好工序衔接，达到均衡生产。在保证工程质量、安全生产的前提下，尽量缩短工期。1.2.3坚持实事求实的原则，在制定施工方案中，充分发挥我单位专业化、机械化的施工优势，借鉴类似工程施工经验，坚持科学组织、合理安排，均衡生产，确保高速度、高质量、高效益地完成本合同段的建设，确保施工组织的先进性和合理性。1.2.4坚持项目法管理的原则。科学合理配置资源、充分运用先进的科学技术和施工设备，做到机械化作业、流水作业和标准化作业。1.2.5实行用工制度的动态管理，根据工程需要，合理配备劳动力资源。加强内部管理，降低工程成本，提高经济效益。1.2.6在满足业主各种要求的前提下，确保实现质量、安全、成本、信誉的预期目标；确保工期超前；确保工程施工质量达到全优。2、工程概况及主要工程数量2.1、工程概况2.1.1、工程简介堡子梁隧道是甘肃省S311线新建隧道，S311线内官营至临洮公路是定西市区域内的一段，现有公路始建于1953年，1974年铺筑表处油面，公路等级为三、四级公路，部分受地形限制段为等外公路，由于技术标准低，建设年代久远，现有公路已不能适应地方经济社会快速发展的需要。堡子梁隧道所在地区由于受大陆性季风气候和地形影响，降水由北向南递增，时空分布不均，冬、春受冷高压影响，气候干燥，雨雪稀少；夏秋降水将多，降雪年际变化大。年平均气温为5.7,最热月（7月）平均气温18，最冷月（1月）平均气温-7,气温随海拔升高而降低；年平均降水量为420.6mm,最大年降水量为486mm，最小年降水量为79.3mm；最大冻土深度91cm；无霜期平均为234天，干旱、冰雹、霜冻、暴雨、寒潮、大风、干热风等灾害性天气常常发生。隧道按二级公路标准设计，进口至出口里程K41+130K41+835，隧道全长705米。隧道进口位于圆曲线上，圆曲线半径R=1000m,隧道出口位于直线上。设计时速40Km/h，隧道采用人字型纵坡：2.767%（1610m）/-2.950%(300m)，隧道内建筑限界限净宽10.00米，建筑限界净高度5.0米，设双侧人行道。断面设计采用R=522cm单心半圆，侧墙采用R=772cm大半径圆弧，仰拱半径为1500cm，仰拱与侧墙间采用R=100cm小半径圆弧连接，隧道内路面宽度为7.40m,拱顶高度为6.82米。堡子梁隧道平面布置服从路线走向，隧道洞口内外3s设计速度行程长度范围的平纵面线形一致。隧道洞门采用端墙式，洞口永久坡面防护同该处路堑边坡护面形式。隧道洞身段衬砌，除V级围岩浅埋段采用矿山法原理设计外，其余采用复合式衬砌，以锚杆、喷射混凝土、钢筋网、钢拱架或格栅钢架为初期支护，模筑混凝土或钢筋混凝土为二次支护，共同组成永久性结构。2.1.2、地质条件及地形地貌该隧道处于陇中黄土高原，总的地势由南向北倾斜，区内以黄土地貌为主。根据地形的海拔高度和切割程度可将沿线分为两个地貌单元：侵蚀堆积的河谷平川区、强烈侵蚀的黄土梁峁、沟壑区。侵蚀堆积的河谷平川区分布于内官营至宋沟、东五里铺至临洮两段，平均海拔在2000m左右；强烈侵蚀的黄土梁卯、沟壑区分布于宋沟至窑店一带的大部分地区，海拔高度在2000m-2600m之间，相对高差近200-260m地貌呈现以岭为主，黄土梁、峁、壑岘、丘陵、沟壑交错分布的特点。隧道地质状况：第四系上更新统风积黄土广泛分布于隧址区上部，岩性为灰黄色黄土，土质均匀，具垂直解理，新近系泥岩砂岩为隧道 洞身主要围岩，泥岩为橘黄色，泥质胶结，块状造，砂岩为浅红色，细粒构造，层理构造，砂砾岩呈透镜状分布于砂岩层中。隧址区地下水匮乏，主要为少量的松散岩类孔（裂）隙潜水，含水层为黄土丘陵之中的第四系黄土与岩层的接触面。2.1.3、隧道结构设计 隧道洞身段衬砌，除V级围岩浅埋段采用矿山法原理设计外，其余均按新奥法原理进行设计，复合式衬砌，以锚杆、喷射混凝土、钢筋网、钢拱架或格栅钢架为初期支护，模筑混凝土或钢筋混凝土为二次支护，共同组成永久性结构。2.1.4、洞门结构进口为台阶端墙式洞门，出口为一字端墙式洞门，洞门两侧边坡设置护面墙，仰坡亦设置护面墙进行防护。2.1.5、隧道防排水设计本隧道的防排水设计原则是以排水为主，防排结合，综合治理。采取“以排、防、截、堵”相结合，形成完整的防排水体系，使隧道达到排水通畅，保证运营期内隧道内不渗不漏，基本干燥。2.1.5.1、防水措施明洞沉降缝采用中埋式橡胶止水带（10×300mm），洞内施工缝处设置遇水膨胀止水条，沉降缝采用中埋式橡胶止水带（10×300mm）。2.1.5.2、排水措施隧道明洞段采用复合防水板及粘土隔水层，墙角外侧设100PE单侧打孔双壁波纹管及沙砾盲沟；洞身复合式衬砌采用土工