倒洞村公路隧道施工组织设计

第一章编制依据及原则...............................................................................................................................11.1编制依据....................................................................................................................................................11.2.编制原则...................................................................................................................................................1第二章工程概况及主要工程数量................................................................................................................32.1自然地理特征............................................................................................................................................32.1.1地形地貌...........................................................................................................................................32.1.2地质构造...........................................................................................................................................32.1.3工程地质...........................................................................................................................................32.1.4不良地质及特殊岩土.......................................................................................................................52.1.5地震...................................................................................................................................................62.1.6水文、气象交通...............................................................................................................................62.2工程概况....................................................................................................................................................62.3主要工程数量表.........................................................................................................................................7第三章施工部署..........................................................................................................................................83.1施工总体方案............................................................................................................................................83.1.1工程施工条件...................................................................................................................................83.1.2施工总体方案...................................................................................................................................83.2施工原则....................................................................................................................................................93.3施工顺序..................................................................................................................................................103.4对突发事件预防措施..............................................................................................................................103.5工程重难点及对策..................................................................................................................................103.6施工组织机构..........................................................................................................................................113.7施工平面布置...........................................................................................................................................123.8人力配置...................................................................................................................................................133.9临时设施布置及规划...............................................................................................................................13第四章施工各项管理目标.........................................................................................................................144.1工期目标..................................................................................................................................................144.2质量目标..................................................................................................................................................144.3安全目标..................................................................................................................................................144.4职业健康安全目标..................................................................................................................................154.5环境保护目标..........................................................................................................................................154.6水土保持目标..........................................................................................................................................164.7文明施工目标..........................................................................................................................................164.8信息管理目标..........................................................................................................................................16第五章施工进度及资源配置计划..............................................................................................................175.1开、竣工日期..........................................................................................................................................175.2施工进度安排依据..................................................................................................................................175.3工期进度指标的确定..............................................................................................................................175.3.1开挖及支护进度指标分析.............................................................................................................175.3.2衬砌施工进度指标分析.................................................................................................................185.3.3总体施工进度计划安排.................................................................................................................185.3.4施工进度计划横道图及网络.........................................................................................................195.4劳动力配置计划......................................................................................................................................205.5机械设备配置计划..................................................................................................................................205.6物资供应..................................................................................................................................................21第六章主要施工方法和工艺流程..............................................................................................................22目录6.3隧道洞口段施工......................................................................................................................................256.3.1开挖方法.........................................................................................................................................256.3.2边仰坡开挖防护..............................................................................................................................276.3.3明洞施工方法.................................................................................................................................286.3.4洞门施工方法.................................................................................................................................296.4超前支护..................................................................................................................................................296.4.1超前大管棚.......................................................................................................................................296.4.2超前小导管.......................................................................................................................................316.4.3超前锚杆...........................................................................................................................................346.5洞身施工..................................................................................................................................................356.5.1总体开挖方案.................................................................................................................................356.5.2Ⅴ、Ⅳ级围岩开挖.........................................................................................................................366.5.3Ⅲ级围岩开挖.................................................................................................................................416.5.4Ⅱ级围岩开挖.................................................................................................................................426.6光面爆破施工..........................................................................................................................................446.6.1光面爆破施工工艺流程...................................................................................................................446.6.2光面爆破工艺要求...........................................................................................................................446.7隧道出碴运输及进料运输......................................................................................................................496.7.1隧道出碴.........................................................................................................................................496.7.2材料运输方法.................................................................................................................................496.8初期支护..................................................................................................................................................496.8.1喷射混凝土施工.............................................................................................................................506.8.2钢拱架的施工.................................................................................................................................516.8.3锚杆施工.........................................................................................................................................526.8.4挂钢筋网.........................................................................................................................................526.9隧道防排水施工方案..............................................................................................................................536.9.1防水层施工.....................................................................................................................................536.9.2排水系统.......................................................................................................................................576.10抗渗混凝土............................................................................................................................................586.11仰拱、仰拱回填施工............................................................................................................................596.12隧道衬砌施工........................................................................................................................................606.12.1钢筋施工.......................................................................................................................................616.12.2模板工程.......................................................................................................................................636.12.3二衬混凝土工程...........................................................................................................................636.13施工缝、变形缝施工............................................................................................................................666.14路面施工................................................................................................................................................666.14.1C20砼基层施工............................................................................................................................666.14.2C40砼下面层施工........................................................................................................................676.15行人横洞及预留预埋.............................................................................................................................686.16隧道监控量测........................................................................................................................................696.17隧道地质超前预报................................................................................................................................736.17.1隧道超前地质预测预报内容及方法...........................................................................................736.17.2隧道地质超前预报工作程序.......................................................................................................746.17.3隧道地质超前预报质量保证措施...............................................................................................756.18水电气供应、通风及照明....................................................................................................................766.18.1施工用水.......................................................................................................................................766.18.2施工用电.......................................................................................................................................766.18.3施工用风.......................................................................................................................................766.18.4施工通风.......................................................................................................................................766.18.5洞内照明.......................................................................................................................................776.19不良地质段处理....................................................................................................................................77第七章保证工期措施.................................................................................................................................787.1编制科学、合理的实施性施工组织设计..............................................................................................787.4发挥优势,全方位保障施工生产..........................................................................................................797.5加强网络计划管理..................................................................................................................................797.6科学组织,加强协作..............................................................................................................................807.7做好人员培训,保障施工生产..............................................................................................................807.8搞好对外关系,确保施工生产顺利进行..............................................................................................807.9全方位做好施工机械设备保障..............................................................................................................807.10确保物资供应........................................................................................................................................81第八章隧道施工技术保证措施.................................................................................................................818.1洞口段施工技术措施..............................................................................................................................818.2洞身开挖施工技术措施..........................................................................................................................818.3初期支护施工技术措施..........................................................................................................................828.3.1湿喷混凝土施工技术措施.............................................................................................................828.3.2锚杆施工技术措施.........................................................................................................................828.3.3钢筋网施工技术措施.....................................................................................................................838.4附属设施施工技术措施..........................................................................................................................838.5隧道防排水施工技术措施......................................................................................................................838.5.1洞外防排水措施.............................................................................................................................838.5.2暗洞防排水措施.............................................................................................................................848.5.3初期支护防水施工技术措施.........................................................................................................848.5.4结构防水施工技术措施.................................................................................................................858.5.5抗渗混凝土防水施工技术措施.....................................................................................................858.6衬砌施工技术措施..................................................................................................................................868.7隧道混凝土耐久性技术措施..................................................................................................................878.8预防隧道坍塌的技术措施......................................................................................................................89第九章质量保证措施.................................................................................................................................919.1强化施工管理,严格施工纪律..............................................................................................................919.2加强质量管理,争创优质工程..............................................................................................................919.3隧道开挖质量保证措施..........................................................................................................................929.4隧道初期支护质量保证措施..................................................................................................................929.5衬砌施工质量保证措施..........................................................................................................................939.6隧道防渗漏措施......................................................................................................................................939.7隧道不良地质地段质量保证措施..........................................................................................................94第十章安全保证体系及措施.....................................................................................................................9510.1开挖施工安全保证措施........................................................................................................................9510.2火工品运输及爆破施工安全保证措施................................................................................................9710.3装碴及运输安全保证措施....................................................................................................................9910.4支护、衬砌安全保证措施..................................................................................................................10010.5通风与防尘安全保证措施..................................................................................................................10010.6临时用电及照明安全保证措施..........................................................................................................101第十一章安全应急救援预案...................................................................................................................10211.1总则........................................................................................................................................................10211.2防范坍方..............................................................................................................................................10211.3突水、突泥地段应急预案..................................................................................................................10211.4断层破碎带、软岩大变形地段..........................................................................................................10311.5岩溶发育地带......................................................................................................................................10411.6报告灾情..............................................................................................................................................10511.7应急反应机构......................................................................................................................................10511.8抢险队伍..............................................................................................................................................10511.9灾害处置..............................................................................................................................................10511.10抢险步骤............................................................................................................................................10611.12灾情、事故搜集和报告....................................................................................................................10611.13其他要求............................................................................................................................................107第十二章冬季、雨季和高温施工措施....................................................................................................10812.1冬季施工............................................................................................................................................10812.2雨季施工............................................................................................................................................10812.3高温施工............................................................................................................................................109第十三章其他应说明的事项...................................................................................................................11013.1文明施工措施....................................................................................................................................11013.2环境保护措施....................................................................................................................................11013.3缺陷责任期及保修期内的工程维护措施........................................................................................111湖北恩来恩黔高速公路TJ-2合同段倒洞村隧道施工组织设计第一章编制依据及原则1.1编制依据(1湖北恩来、恩黔高速公路TJ-2合同段《倒洞村隧道二阶段施工设计图》(2现场调查所得的工程地质、水文地质、当地资源、交通状况及施工环境等资料。(3我单位所拥有的技术力量、机械设备状况、管理水平、工法及科技成果和成熟的类似工程施工经验。(4主要的工程技术规范、标准、规则、规程:《公路工程技术标准》(JTGB01-2003《公路隧道设计细则》(JTG/TD70-2010《公路隧道通风照明设计规范》(JTJ026.1-1999《公路工程抗震设计规范》(JTJ004-89《公路隧道施工技术规范》(JTGF60-2009《公路工程基本建设项目设计文件编制办法》(交通部2007年10月1日实施《工程建设标准强制性条文》(公路工程部分《高速公路隧道监控系统模式》(GB/T18567-2010《公路隧道交通工程设计规范》(JTG/TD71-20011.2.编制原则(1合理配置资源,满足工程需要的原则以优质、高效、快速施工为目的,进行机械设备配套,合理配置施工队伍、组织工程材料供应。(2突出重点,统筹安排的原则统筹安排,确保本隧道洞口开挖和Ⅴ级围岩安全施工,科学合理地安排施工进度,组织连续均衡施工,做好工序衔接,确保按期和提前完成工程建设。1(3应用“四新”技术,提高施工水平的原则突出应用新技术、新设备、新材料、新工艺,提高施工的机械化作业水平,积极应用先进的科技成果,提高工程质量、加快工程进度、降低工程成本的目的,做到优质、快速、安全、高效按期完成本工程。(4安全生产,预防为主的原则运用现代科学技术,采用先进可靠的安全预防措施,确保施工生产和人身安全。始终按照技术可靠、措施得力、以人为本、确保安全的原则确定施工方案,施工重点控制爆破作业安全及隧道特殊地质段的施工安全。(5规范施工,确保工程质量的原则严格执行国家和交通部现行的《施工规范》、《验收标准》,科学优化施工组织方案、施工工艺和施工方法,确保工程质量,并满足全线整体创优规划要求。(6保护环境,文明施工的原则树立环保意识,严格按国家关于环境保护的有关规定组织施工,保护好周围生态环境,做到文明施工。把环境保护、水土保持提高到一定政治高度来对待,确保施工区域所处生态环境、沿线水域不受污染和破坏,确保施工过程中做到“三同时”。(7确保工期的原则根据业主对二标的工期要求,编制科学、合理、周密的单位工程施工方案,合理安排进度,实行网络控制,搞好工序衔接,实施进度控制,确保工期目标的实现。(8贯彻执行国家和当地政府的方针政策,遵守法律法规,尊重当地的民风民俗。2中交第二航务工程局有限公司第二章工程概况及主要工程数量2.1自然地理特征2.1.1地形地貌隧址区属构造剥蚀溶蚀低中山峰丛地貌,隧道走向呈东北~西南向,隧道穿越段地面标高在834.00~982.00m之间,相对高差约148m,地势起伏较大。隧道进口位于一缓坡上,坡度约为15°,坡向约40°,山坡上分布有少量居民点;出口所处斜坡较陡,坡度约35°,坡向约172°,自然山坡均处于稳定状态。进出口溶蚀现象较发育,可见溶沟、溶槽、溶蚀洼地、落水洞等。2.1.2地质构造隧址地质构造作用为大集场向斜,位于向斜左翼上,隧址岩层为单斜构造,岩层产状在143°∠18°~120°∠34°之间。岩体节理主要有L1、L2两组,L1节理:156°∠88°,密度1~3条/m,呈微张开状,隙宽1~3mm,无充填物,水平延伸长度2~3m,竖向切深0.30~0.60m;L2节理:57°∠88°,密度1~2条/m,呈微张开状,隙宽2~3mm,充填方解石脉,水平延伸长度1~3m,竖向切深0.40~0.70m。2.1.3工程地质左线由进口向出口地质评价及工程建议如下:ZK32+660.98(进口~ZK32+670段,长9.02m:该段为V级围岩,围岩前段为坡积成因的粘性土夹碎石,可塑、稍密,散体结构,后段为中风化灰岩,洞口浅埋且缓倾角,自稳差,主要问题为第四系覆盖层沿基岩面滑动,尤其是在降雨季节。建议前段土层可挖除。仰坡需防护,并完善截排水措施。ZK32+670~ZK32+715段,长45m:该段为IV级围岩,围岩质量指标BQ/[BQ]=356/346。围岩为中风化灰岩,岩层倾向洞内,倾角较缓(18°;较坚硬、较破碎、中层层状结构;地下水稍发育,雨季洞内淋雨状,岩溶不发育。3中交第二航务工程局有限公司ZK32+715~ZK32+790段,长75m:该段为III级围岩,围岩质量指标BQ/[BQ]=356/356。围岩为中风化灰岩,岩层倾角15°,单斜;属较硬岩、较完整、中层层状结构;无地下水,岩溶不发育;缓倾岩层拱部有局部发生掉快或块体坍塌的可能。ZK32+790~ZK32+900段,长110m:该段为III级围岩,围岩质量指标BQ/[BQ]=362/362。围岩为中风化灰岩,岩层倾角15°,单斜;属较硬岩、较完整、中层层状结构;无地下水,岩溶不发育;缓倾岩层拱部有局部发生掉快或块体坍塌的可能。ZK32+900~ZK33+040段,长140m:该段为II级围岩,围岩质量指标BQ/[BQ]=463/463。围岩为中-微风化灰岩及白云质灰岩,倾角较缓,岩质较坚硬,完整,后层状结构,自稳性较好,岩性接触带受缓倾角影响或爆破振动过大时可能产生小规模坍塌。地下水出水不发育,雨季洞内潮湿或点滴状。ZK34+040~ZK33+080段,长40m:该段为III级围岩,围岩质量指标BQ/[BQ]=362/362。围岩为中风化白云质灰岩,单斜缓倾角;属较硬岩、较完整、中层层状结构;无地下水,岩溶不发育;缓倾岩层拱部有局部发生掉快或块体坍塌的可能。ZK33+080~ZK33+160段,长80m:该段为IV级围岩,围岩质量指标BQ/[BQ]=327/307。围岩中风化白云质灰岩,单斜缓倾,属较硬、破碎-较破碎,中厚层状结构;受缓倾角影响,岩溶发育,雨季地下水出水状态为淋雨状。ZK33+160~ZK33+182.41(出口段,长22.41m:该段为V级围岩,覆盖层稳定性较差,洞口段下伏基岩浅埋及顺向,在不利因素干扰下易形成顺坡滑坍影响洞口施工及下方公路的安全运营。右线由进口向出口地质评价及工程建议如下:YK32+664(进口~YK32+680段,长18m:该段为V级围岩,围岩前段为坡积成因的粘性土夹碎石,可塑、稍密,散体结构,后段为中风化灰岩,洞口浅埋且缓倾角,自稳差。前段土层可挖除。仰坡需防护,并完善截排水措施。YK32+680~YK32+720段,长40m:该段为IV级围岩,围岩质量指标BQ/[BQ]=356/346。围岩为中风化灰岩,岩层倾向洞内,倾角较缓;较坚硬、较破碎、中层层状结构;地下水稍发育,雨季洞内淋雨状,岩溶不发育。4中交第二航务工程局有限公司YK32+720~YK32+795段,长75m:该段为III级围岩,围岩质量指标BQ/[BQ]=356/356。围岩为中风化灰岩,岩层倾角15°,单斜;属较硬岩、较完整、中层层状结构;无地下水,岩溶不发育;缓倾岩层拱部有局部发生掉快或块体坍塌的可能。YK32+795~YK32+890段,长95m:该段为III级围岩,围岩质量指标BQ/[BQ]=362/362。围岩为中风化灰岩,岩层倾角15°,单斜;属较硬岩、较完整、中层层状结构;无地下水,岩溶不发育;缓倾岩层拱部有局部发生掉快或块体坍塌的可能。YK32+890~YK33+030段,长140m:该段为II级围岩,围岩质量指标BQ/[BQ]=463/463。围岩为中-微风化灰岩及白云质灰岩,倾角较缓,岩质较坚硬,完整,后层状结构,自稳性较好,岩性接触带受缓倾角影响或爆破振动过大时可能产生小规模坍塌。地下水出水不发育,雨季洞内潮湿或点滴状。YK34+030~YK33+077段,长47m:该段为III级围岩,围岩质量指标BQ/[BQ]=362/362。围岩为中风化白云质灰岩,单斜缓倾角;属较硬岩、较完整、中层层状结构;无地下水,岩溶不发育;缓倾岩层拱部有局部发生掉快或块体坍塌的可能。YK33+077~YK33+160段,长83m:该段为IV级围岩,围岩质量指标BQ/[BQ]=327/307。围岩中风化白云质灰岩,单斜缓倾,属较硬、破碎-较破碎,中厚层状围岩;受缓倾角影响,岩溶发育,雨季地下水出水状态为淋雨状。YK33+160~YK33+186(出口段,长26m:该段为V级围岩,覆盖层稳定性差,洞口段下伏基岩浅埋及顺向,在不利因素干扰下易形成顺坡滑坍影响洞口施工及下方公路的安全运营。2.1.4不良地质及特殊岩土㈠隧址覆盖土层厚度不大,岩体结构及岩体质量较好,自然山坡处于稳定状态,无重力地质作用产生的不良地质现象;岩层为可溶岩,见有溶蚀现象;洞口开挖边、仰坡可能会引起土层沿基岩面滑动,但规模不大。㈡岩溶隧址及周边地表岩溶形态主要是溶沟、溶槽、小的碟形洼地。在进口附5中交第二航务工程局有限公司近ZK32+683左126m处见有一岩溶漏斗,周边地形凹陷成洼地,洼地内现为农田,落水洞位于洼地西部,为地下暗河进口,汇