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1、Gay is now a provincial key construction project of aluminum Ltd-province with an annual output of 50,000 tons of technical innovation project of environmental protection and energy saving of electrolytic aluminum project manager. In this technological transformation projects, he has overall respons
2、ibility for the day-to-day affairs of the project. In order to ensure that southern companys control the scale of investment, strengthen field management, pay special attention to project progress, and ensure a successful operation, the overall goal. He and Engineering Department under the leadershi
3、p of all the staff in the companys technical command, on the difficulties and to overcome technical difficulties in the process, work hard, have made outstanding achievements, mainly reflected in the following aspects: first, careful organization and management achieved remarkable results. Technical
4、 innovation project of the year, started and completed a series of bids and completed to date, from production engineering to put into production after nearly a year, has achieved very significant results. A project first 56 slots from dismantling the old slot just 168 days, civil engineering, insta
5、llation, commissioning, guarantee engineering quality under the premise, on the production side transformation under difficult conditions, created the national industrys fastest speeds. II 32 large prebaked electrolytic cell on November 7 has been installed, marks has an annual production capacity o
6、f 50,000 tons of electrolytic aluminum production capacity of aluminum. Entire project almost 8 months earlier than planned, achieved the goal of production transformation benefits that year, created favorable conditions for aluminum through South. Second, effectively control the investment. Project
7、 is subject to a scientific approach to bidding, bidding to make savings of 20 million Yuan, in the implementation process of the project, every domestic prices of steel, cement and other building materials, the old buildings on the base encountered great difficulties in dealing with significant inc
8、rease in the volume of civil engineering, but through rationalization and optimization, project control in fixed investment of 350 million Yuan. Third, environmental energy-saving effect of the project. Project investment of nearly 30 million Yuan, using large prebake technology and aluminum oxide d
9、ense phase and hyper dense phase conveying technology, fluoride and other harmful gases purification efficiency of up to 98%. Compared with Soderberg cell before the modification, power consumption can be reduced by 1500 tons of electrolytic aluminum, and project environmental protection and energy
10、saving effect is obvious. Four are in a relatively short period of time to the normal production. After four months of efforts, a project has put into operation all the 54 240KA large cell into regular production, stable current channel conditions and all the economic indicators are good, current ef
11、ficiency in October had reached 93%, is close to and reach the domestic advanced level. In the case of production half of the cell, this effect can be achieved and better level in the industry. 50,000 tons of electrolytic modification process, from preliminary study to equipment selection, cost cont
12、rol, project progress, quality control and coordination among the various sub-projects and various professional, technical command under the correct leadership, both from an overall perspective, emphasis on integrity, and earnestly implement the relevant laws and regulations, strictly act according
13、to the contract. He tried to learn relevant knowledge, good style of business, operational and organizational coordination ability, project efficiency, quality and safety assurance system in place, with all units involved with the coordination and good .西安市地铁三号线TJSG-9标北青区间盾构小净距施工方案编制人： 审核人： 审批人： 中铁电
14、气化局集团有限公司西安地铁三号线TJSG9标项目经理部2014年4月Four outstanding works. They are derived from their own inner feelings. I also sent a student to attend the class Department speech contest, failed to get a good result, but also actively cooperate with the Department and class activities! in order to create a demon
15、stration dorm room, our weekly class to every bedroom check, where proposed is insufficient. In order to clean up the bedroom, we use the brush brushes a bedroom again. For the class out of a force. In the event we, many projects did not get the desired results. But we understand that we tried, and
16、in the struggle. Also has made good progress in many of the! in my class the work carried out and the results achieved, thanks to the concern and support of the Department, thanks to instructor teachers good, proper guidance, thanks to 46 students in the class will work closely together, to work tog
17、ether. Of course, we also have our weaknesses, needs to be further correction in their future learning and life, with a view to achieving greater results. Five declarations of good party branch branch is a fortress, a party member is a banner. Fighting in the railway engineering construction Group H
18、eadquarters Headquarters branches, a total of members 18. Role of the Xiang-GUI railway and tight South Lebanon railway, heavy, poor conditions of disadvantage, the branch closely around the construction work. Holding high the flag of our party members, unite and lead staff on the difficulties, over
19、come difficulties, take the zhengyou, a job well done and an engineering task, won the highly valued by leaders at all levels. Since October last year since the project began, Headquarters Branch is tightly around the center of its activities. Face South, climate is wet, sooner or later temperature
20、larger, specific difficult, I branch from thought requirements all workers active motivated, do can long-term hard, dare fight of spirit prepared, while requirements all members lead, encouraged colleagues Zhijian each other help, each other learning business knowledge, overcome temporarily difficul
21、t, active into to engineering official starts of the prepared work in the to, play out has as a branch of fighting fortress role and members of pioneer model role. Since its start, I command under the correct leadership of the party branch in the Group and the superior party, centering on building a
22、 qualified party branches, branch of the forts and the battle to play the exemplary vanguard role of party members, actively working. In command personnel less, and task heavy of situation Xia, all members always according to party stronger, and style to are, and service better, and efficiency to hi
23、gh of requirements, from overall starting, better to completed has production organization, and coordination, and guarantees and the management work, in engineering progress, and quality, and benefits, and safety, aspects are made has good of results, get has owners and the Group and grass-roots uni
24、ts of praise. First, give full play to the exemplary role of party members. The exemplary role of party members and cadres are silent on the command, the exemplary role of party members and cadres are the best of the ideological and political education. We pay close attention to party building, requ
25、ires political party members and cadres must take the lead in learning, set strict demands on themselves, .目 录一、编制范围和依据31.1 编制范围31.2 编制依据3二、工程概况32.1 工程简介32.2 工程地质、水文概况42.2.1 地形、地貌42.2.2 场地地层岩性特征42.2.3 水文地质特征5三、施工准备及组织机构53.1 施工人员准备53.2 施工设备准备53.3 水、电接口63.4 施工管理组织机构6四、施工方案74.1 总体施工方案74.2 旋喷隔离桩74.2.1 试
26、桩施工参数84.2.2 旋喷桩施工参数84.2.3 旋喷桩施工工艺94.2.4 旋喷桩施工方法94.3 洞内注浆加固114.3.1 注浆加固范围114.3.2 注浆加固参数124.3.3 注浆加固工艺124.4 暗挖隧道加固134.5 严控盾构施工参数144.6 监控量测144.6.1 监控量测目的及项目144.6.2 监测点埋设、测试与要求154.6.3 监测周期和注意事项15五、安全与环境保证措施165.1 安全保证措施165.2 现场临时用电安全措施175.2.1 现场临时用电安全措施175.2.2 现场用电安全操作规程185.3 环境保护保证措施19六、质量保证措施196.1 质量方针
27、196.2 质量目标196.3 质量管理体系196.3.1 建立项目质量管理体系196.3.2 质量职责分配196.4 盾构机始发质量保证措施206.5 初期小净距掘进质量保证措施2121一、编制范围和依据1.1 编制范围编制范围为北青盾构区间小净距隧道施工。1.2 编制依据1、西安市地铁三号线一期工程鱼化寨至保税区段（不含试验段）土建施工项目投标文件以及施工合同。2、西安市地铁三号线一期工程鱼化寨至保税区段（不含试验段）土建施工项目TJSG-9标施工用图。3、西安市地下铁道有限责任公司技术处关于北池头车站东端始发加固及北青小净距隧道加固方案讨论会会议纪要。4、西安市地铁三号线（鱼化寨保税区）
28、详细勘察阶段 北池头青龙寺区间岩土工程勘察报告。5、现场踏勘的有关资料。6、国家、陕西省现行的有关地下工程设计、施工规范和规程等。7、国家及地方政府颁布的有关法律、法规。8、适用于本工程的标准、规范有：地下铁道工程施工及验收规范（GB50299-1999）工程测量规范（GBJ50026-93）混凝土质量控制标准（GB50164-92）混凝土强度检验评定标准（GBJ107-87）建筑桩基技术规范（JGJ94-94）建筑工程质量检验评定标准（GB50210-2011）建筑施工安全检查标准（JBJ59-2001）施工现场临时用电安全技术规程（JGJ46-2005）建设工程施工现场供用电安全规范（GB
29、50194-93）9、我单位现有的施工技术水平、施工管理水平、机械设备配备能力及劳动力人员能力。10、我单位多年类似工程的施工经验。二、工程概况2.1 工程简介西安地铁三号线TJSG-9标主要施工项目为青龙寺站、延兴门站、北池头站青龙寺站区间、青龙寺站延兴门站区间，共计两站两区间工程。青延区间盾构隧道分为两段：青龙寺站地裂缝暗挖段，其中左线长606.886m、右线长632.807m；地裂缝暗挖段延兴门站，其中左线长917.349m、右线长915.660m。盾构机到达地裂缝暗挖段接收后，空推通过地裂缝段，洞内进行二次始发，到达青龙寺站东端头解体吊出。北青区间左线盾构隧道全长1230.055m、右
30、线盾构隧道全长1494.399m，左线从盾构吊出井始发，右线从北池头站东端头始发，掘进至青龙寺站西边北青区间风井解体吊出。北青区间左线北池头站盾构吊出井，采用矿山法施工；右线采用盾构法施工。左线暗挖隧道在里程ZDK24+463.502ZDK24+477.302的A断面与里程ZDK24+477.302ZDK24+505.302的B断面与右线盾构隧道距离较近，A断面与盾构区间隧道的净距1.03m，B断面与盾构区间隧道的净距为2.05m。2.2 工程地质、水文概况2.2.1 地形、地貌本区域地形总体平坦，地面高程在426.84427.02m之间。根据西安城市工程地质图集，区间地貌为黄土洼。2.2.2
31、 场地地层岩性特征根据岩土的时代成因、地层岩性及工程特性，对岩土进行了工程地质分层，各层土的岩性特征及埋藏条件分述如下：1、第四系全新统1-1层杂填土（Q4 ml）：主要由沥青路面、灰渣、石块、灰土、碎石垫层及砖瓦碎块组成，黏性土充填，成分杂乱，结构松散。层厚0.400.50m，层底深度0.400.50m，层底高程426.44426.52m。1-2层素填土（Q4 ml）：以黄褐色为主，主要由粘性土组成，以可塑为主，含少量砖瓦片，土质不均，地表处多为道路路面（沥青）及灰土、碎石垫层。层厚1.001.70m，层底深度1.502.10m，层底高程424.74425.52m。2、第四系上更新统3-1-
32、1层新黄土（水上）(Q3eol) ：褐黄色，大孔、虫孔发育，见少量白色钙质条纹及蜗牛壳碎片。液性指数IL =0.37，可塑状态。层厚5.507.10m，层底深度约8.60m，层底高程418.24418.42m。3-1-2层新黄土（水上）(Q3eol) ：褐黄色，大孔、虫孔发育，见少量白色钙质条纹及蜗牛壳碎片。液性指数IL =0.37，可塑状态。层厚1.601.70m，层底深度10.2010.30m，层底高程416.64416.72m。3-2层古土壤(Q3el)：红褐色，具针状孔隙，含多量白色钙质条纹及结核，团粒结构，局部底部结核富集。液性指数IL =0.48，可塑状态。层厚3.504.00m，
33、层底深度13.8014.2m，层底高程412.64413.22m。3、第四系中更新统4-1-2-1层老黄土（水下）(Q2eol)：褐黄色，具针状孔隙，含少量钙质结核，见蜗牛壳碎片，液性指数IL =0.71，可塑状态。层厚9.9010.20m，层底深度24.0024.10m，层底高程402.74403.02m。4-2层古土壤(Q2el)：红褐色，具针状孔隙，含多量白色钙质条纹及结核，团粒结构，底部含结核含量较高。液性指数IL =0.48，可塑状态。层厚3.904.60m，层底深度28.0028.60m，层底高程398.42398.84m。2.2.3 水文地质特征勘察期间（2010.5.72010
34、.7.4，2010.9.282010.12.8），场地地下水位埋深约12m，地下水位高程介于414.5414.7m之间。属赋存于第四系松散层中的孔隙潜水类型，主要含水层为3-2古土壤、4-1-2-1老黄土（水下）、4-2古土壤。以上含水层组中无明显隔水层，也无明显具承压性的含水层。三、施工准备及组织机构3.1 施工人员准备主要管理人员：项目经理1名，项目总工1名，工区副经理1名，工区土建负责人1名，工区机电负责人1名，技术人员6名，施工队长2名，班长4名，材料员2名，安全员4名，质检人员2名。主要作业人员：盾构机主司机2名，盾构机副司机2名，管片拼装手2名，电瓶车司机4名，电工4名，电气焊工4
35、名，机械维修保养工12名，线路维护工4名，地下隧道配合工20名，龙门吊司机4名，挖掘机司机4名，盾构砂浆搅拌站8名，地面配合工24名。3.2 施工设备准备1、出土用2台45t龙门吊，1台布置在北池头东端，1台布置在吊出井，等待场地具备条件即进场安装。2、出土用45t电瓶车4列、渣车16节、浆车4节、管片车8节，存放于我单位盾构机整修基地，等待进场。3、砂浆拌和站，搅拌罐，存放于我单位盾构机整修基地，等待进场。4、土压平衡盾构机2台，1台CTE6250已进场安装完毕，1台SR001等待进场。3.3 水、电接口盾构施工用水采用北池头车站东端降水井水源。盾构施工用电采用业主提供的10KV高压，由变压
36、器房引至盾构机上接入使用。3.4 施工管理组织机构图3.4-1 施工管理组织机构图四、施工方案4.1 总体施工方案北青区间右线隧道采用盾构机从北池头车站东端始发向东掘进，区间左线隧道从北池头车站到盾构吊出井采用矿山法施工。左线暗挖隧道在里程ZDK24+463.502ZDK24+477.302的A断面与里程ZDK24+477.302ZDK24+505.302的B断面与右线盾构隧道距离较近，A断面与盾构区间隧道的净距1.03m，B断面与盾构区间隧道的净距为2.05m。为保证小净距隧道施工安全采取以下处理措施：1、左线B断面与盾构区间隧道的净距为2.05m，在B断面与右线盾构隧道之间打设旋喷桩加固土
37、体，加固指标qu28不小于0.8MPa，渗透系数不大于110-8cm/s且在旋喷桩加固前先调查有无管线影响，有影响的管线应提前迁改。2、左线A断面与盾构区间隧道的净距为1.03m，因地面管线及道路情况等现场条件限制，无法进行地面旋喷桩加固，所以在A断面与右线盾构隧道之间只能进行暗挖隧道洞内注浆加固。B断面与右线盾构隧道之间旋喷桩加固之后再进行暗挖隧道洞内注浆加固。3、因左线暗挖与右线盾构间距较小，必须合理安排施工顺序，要求在盾构始发前先进行素混凝土桩加固车站端头土体，待基坑主体结构完成后施工左线暗挖隧道，在暗挖隧道的二衬施工完成后，右线盾构才能通过，A断面靠近右线盾构隧道一侧的锁脚锚管不能影响
38、右线盾构施工，特别是A断面直墙上锁脚锚杆斜向下的水平倾角不小于60，其余断面每侧拱脚及A断面其余部位连接处均设两根锁脚锚管，水平夹角为2030，锁脚锚管采用423.5mm小导管，加工参数同超前支护，单根长度3.0m，每处2根，水平倾角2030；注浆压力0.20.5MPa，锚管与钢格栅连接牢固。4、在右线盾构隧道施工前，左线暗挖隧道内采用临时型钢钢架支护加固，保证暗挖隧道的安全。 5、为了减少右线盾构推进时对左线已完成暗挖隧道影响，右线盾构在通过此段暗挖隧道时必须严格控制盾构施工参数，加强注浆，确保暗挖隧道安全。6、盾构通过此段地层时，应加强左线暗挖隧道监测，以及盾构施工监测，做好信息化施工，做
39、好应急预案。4.2 旋喷隔离桩4.2.1 试桩施工参数项次技术参数试桩1试桩2试桩3压缩空气压力（MPa）0.70.90.70.90.70.9流量（m3/min）333喷嘴间隙（mm）242424水泥浆液压力（MPa）252530流量（l/min）801208012080120喷嘴孔径（mm）333喷嘴个数222注浆管提升速度（cm/min）151717旋转速度（R/min）151515外径（mm）50、7550、7550、75水泥掺量（Kg/m3）225200250试桩强度结果（MPa）1.630.921.51试桩桩径检查结果（mm）880mm850mm900mm4.2.2 旋喷桩施工参数根
40、据试桩结果，三根试桩强度完全满足设计要求，且直径也满足设计要求，在此条件下，旋喷桩施工参数选取如下：项次技术参数压缩空气压力（MPa）0.70.9流量（m3/min）3喷嘴间隙（mm）24水泥浆液压力（MPa）2530流量（l/min）80120喷嘴孔径（mm）3喷嘴个数2注浆管提升速度（cm/min）1520旋转速度（R/min）15外径（mm）50、75水泥掺量（Kg/m）2004.2.3 旋喷桩施工工艺采用双重管旋喷桩施工，施工工艺如下图4.2-1 旋喷桩施工工艺流程图。测量定位钻机就位钻孔施工插入注浆管喷射作业拔管清洗机具移开钻机回填注浆配套设备就位水泥浆拌制水泥浆输送图4.2-1 旋
41、喷桩施工工艺流程图4.2.4 旋喷桩施工方法1、定桩位采用全站仪坐标法测放出每排旋喷桩的南北轴线控制桩，再用大钢尺进行排放逐个桩位。旋喷桩采用桩径为800mm，桩心距600mm（咬合布置），梅花型布置。采用“隔一打一”方式，为确保桩与桩间能很好地咬合，且间隔时间应为24小时。2、机具就位、调整钻架：钻机就位应机座水平、立轴垂直。调平安稳，对准误差控制在2cm以内，钻杆垂直度控制在1%以内。搭设平台，安装浆液搅拌机、高压泥浆泵、输注浆管路、水电接头、闸阀、仪表等。辅助设备安装应满足下列要求：制浆机应略高于贮浆罐上口；高压泥浆泵进浆口必须加设滤网，并稍低于贮浆罐出口；高压泥浆泵与旋喷管间必须用高压
42、胶管连接。安装完毕后，必须检查高压设备、管路系统，确保规格符合要求、连接密封完好。并尽量缩短高压注浆管的长度，控制在20m以内为宜。3、钻孔首先进行低压（0.5MPa）射水实验，以检查喷嘴是否畅通，压力是否正常。钻孔开始时射水压力由0.5MPa增至1MPa，以减小摩阻力，防止喷嘴被堵，钻机边射水边钻进，直到达到设计标高。4、水泥浆拌制水泥浆液制备在下旋喷管前1小时进行，随配随用。浆液的水泥、水及掺加剂必须按现场试桩确定的配合比严格计量，采用制浆机均匀拌制，足量贮存备用。水泥浆比重不小于1.2。浆液配比选定后，首先将水加至水箱内，再将水泥倒入，打开搅拌机搅拌10min20min，然后打开搅拌筒底
43、部阀门，进入的一道过滤筛，过虑后进入泥浆池，而后通过水泥泵抽进第二道过滤筛，经过二次过虑后，流入泥浆筒备用。5、喷浆旋喷管下插到距设计深度0.5m处时先启动注浆泵送浆，同时旋钻下放，下至设计标高后，在启动高压泵和空压机，待各项参数正常后方可提升。泥浆筒中的泥浆，通过高压泵加压（25MPa30MPa）后，经高压管道送至钻机用于旋喷。（1）钻孔至桩底设计标高后，待浆液从孔底冒出地面后，钻杆开始旋转提升，由下而上进行旋喷。（2）注浆管分段提升的搭接长度不小于100mm。（3）施工过程中，视实际情况对需要扩大加固范围或提高强度的部分采取重复喷射的方法，并使实际桩顶标高高于设计标高0.20.3m。（4）
44、浆液搅拌后4h内用完，当超过时间时，通过试验证明其性能符合要求后方可使用。（5）喷射注浆过程中，安排值班人员时刻检查浆液初凝时间、注浆流量、风量、压力、旋转提升速度等参数是否符合设计要求，并做好记录。（6）冒浆处理喷浆过程中，冒浆量超过20或完全不冒浆时，查明原因，并采取相应处理措施。冒浆量过大的主要原因是有效喷射范围与注浆量不相适应，注浆量大大超出喷浆固结所需浆量所致。减少冒浆量的措施为：提高喷射压力；加快旋转速度。为确保旋喷桩质量，对冒出地面的浆液不再利用。不冒浆采取措施为：在地层空隙地段增大注浆量，填满空隙后再继续正常喷浆。6、拔管、冲洗旋喷注浆达到设计桩顶+0.2m后，注浆泵继续送浆液
45、，同时拔出旋喷管，待水泥浆液从孔口返出后，即可停止送浆，并将注浆泵的吸浆管移至清水箱中，抽吸定量清水将泥浆泵和注浆管路中的水泥浆液顶出，然后停泵。钻机、泥浆搅拌机、贮浆罐、注浆管和泥浆泵外用清水冲洗干净备用。7、桩机移位待旋喷桩机注浆管全部提出地面后，先关闭电机，然后将桩机移至新的桩位。机具移位采用导轨法进行。移位时，防止损坏已成桩的旋喷桩固结体。旋喷注浆结束后，由于水泥浆液的析水作用，一般均有不同程度的收缩，使旋喷桩固结体顶部出现凹穴，应及时用泥浆补灌；桩顶补灌结束后，桩顶以上的空孔洞应采用原状土填平地面保护，防止意外。4.3 洞内注浆加固4.3.1 注浆加固范围左线暗挖隧道在里程ZDK24
46、+463.502ZDK24+477.302的A断面与右线盾构区间隧道的净距1.03m，因地面管线及道路情况等现场条件限制，无法进行地面旋喷桩加固，所以在A断面与右线盾构隧道之间1.83m进行暗挖隧道洞内注浆加固。左线暗挖隧道在里程ZDK24+477.302ZDK24+505.302的B断面与右线盾构区间隧道的净距为2.05m，在B断面与右线盾构隧道之间2.85m进行暗挖隧道洞内注浆加固。4.3.2 注浆加固参数 沿隧道中轴线方向，上下两个导洞分别每隔1米布置一个注浆孔，上下导洞注浆孔交错布置，采用压力注浆，注浆压力1.0Mpa，水泥浆比重不小于1.2。4.3.3 注浆加固工艺要求严格按照国家有关技术规范、规程、标准控制。根据施工程序，严把钻孔深度、配料、注浆压力、注浆量关，每一道工序均安排专人负责，并记录好每一道工序的原始数据。注浆工艺流程：定孔位钻机就位钻孔至设计深度提升钻具移位插花管、高压注浆，重复上述流程。测点放线定孔位钻 孔提钻具插花管高压注浆1011101110VCC注浆结束调角度移孔图4.3-1 注浆工艺流程图重点控制孔位、成孔深度、提升速度等施工工序。各工序由专人负责，技术负责人全面负责现场施工、分项工程质量验收、施工组织管理。上道工序验收合格后，方可进行下道工序的施工，确保工程质量。1、钻机就位按照孔位布置图放孔位，孔位允许偏差小于2cm；在施工前，技术人员对施工