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1、四川路桥西成铁路客运专线四川段3标段 初期支护施工作业指导书四川路桥西成铁路客运专线XCZQ-3初 期 支 护 施 工 编 制 审 核 接 受 人 日 期 四川路桥西成铁路客运专线四川段3标段 二一三年六月the provisions of Hunan province safety production supervision and management responsibilities (Hunan Zhengban made 2013 No. 4), resolutely implement the safety production of the party with respons
2、ibility, a pair of responsibility. Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is the establishment of enterprise production safety hidden With
3、self correction self reporting system, promote the enterprises to implement the main responsibility for production safety. The four is the introduction of strengthening county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict
4、 accountability and target management. Adhere to the who is in charge, who is responsible for the pipe industry must pipes, pipe production and management must control safety management business must be safe principle, the implementation of safe production supervision and stagnation to cure. The lea
5、dership responsible system. Production safety of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strict implementation of safe prod
6、uction of one vote veto award and recognition system, strengthen production safety incentive mechanism (four). Adhere to the political principles against unwholesome tendencies existence of the problem is not strict internal supervision. Over the years, the global leadership team members do not have
7、 any illegal and other bad records, but there are still not strict, the implementation does not survive the problem. A few leading cadres not strictly in accordance with the county Party committee, county government On strengthening style construction requirements and style construction safety super
8、vision system of ten prohibitions, to solve the people most concerned, the most direct, the most realistic problem of production safety as the starting point and goal of all work, to strengthen internal supervision on the way, in the perfect power control mechanism on let things drift, get free in t
9、he political norms of leading cadres, some involving major principle problems of ambiguous attitude, major issues issues of right and wrong, it cannot stand up bravely, face to face, resolute struggle and discredit the views of the party in 2012. The style of the big consolidation activities, cadres
10、 and workers 6 people were- 1 -四川路桥西成铁路客运专线四川段3标段 初期支护施工作业指导书初期支护施工作业指导书一、编制依据1.1工序采用的标准：1.1.1、客运专线铁路隧道工程施工质量验收暂行标准1.1.2、客运专线铁路隧道工程施工技术指南1.1.3、铁路隧道施工规范1.1.4、铁路隧道工程质量检验评定标准1.1.5、锚杆喷射混凝土支护技术规范1.1.6、铁路隧道喷锚构筑法技术规范1.2工序采用的设计文件：1.2.1、仙女岩隧道设计图（西成客专施隧-28（EY）1.2.2、双线隧道复合式衬砌参考图（西成贰隧参03）1.2.3、双线隧道下锚段复合式衬砌参考图（西
11、成贰隧参04）1.2.4、西成线隧道综合洞室参考图（西成贰隧参06）1.2.5、西成线隧道辅助工法参考图（西成贰隧参09）二、适用范围 仙女岩隧道洞身开挖、超前支护和初期支护。三、施工准备、施工前熟悉设计文件，领会设计意图，做好现场调查和图纸核对工作。、施工场地应结合工程规模、工期、地形特点、弃渣场和水源等情况进行合理布置。、从事隧道施工的各类特殊岗位人员均应持证上岗。、隧道施工前应对施工人员进行安全培训和安全、技术交底。、应做好工程所需材料的选择和相关检测、试验工作。、应配备满足工程需要的施工设备和仪器，并完成相应的检定工作。四、施工方法1.1喷射混凝土本隧道钢架锚（网）喷射混凝土设计参数见
12、附表双线隧道复合式衬砌参考图（西成贰隧参03）和双线隧道下锚段复合式衬砌参考图（西成贰隧参04）。（1）施工方法喷射混凝土采用湿喷法，混凝土由洞外拌和站集中拌料，混凝土运输车运到工作面。喷射作业分段、分片、由下而上顺序进行。先初喷混凝土厚度35cm，等锚杆、钢筋网、钢架安装完后进行混凝土分层复喷作业，喷至设计厚度。喷射混凝土在终凝后，及时进行混凝土养护工作，可有效提高混凝土强度3%左右。前期准备施喷面的清理计量配料拌 合砂、石、水泥、水、外加剂混凝土搅拌站装运喷料现场施喷综合检查结束加速凝剂不合格混凝土喷射机补喷混凝土合格湿喷混凝土工艺流程图（2）施工技术要求：a.原材料计量要准确，杂质含量不
13、超标，砂、石料、水泥、水的计量误差2%，速凝剂等外加剂的计量0.5%。b.喷射前处理危石，检查开挖断面净空尺寸。必要时素喷混凝土封闭掌子面，确保作业安全。在拱部和边墙处环向设置控制喷混凝土厚度的标志。c.采用强制式搅拌机拌制混凝土。d.用高压水冲洗受喷面（受喷面遇水易泥化时，用高压风吹净岩面）。e.喷射作业分段、分片、分层，由下而上顺序进行，每层喷射厚度控制在56cm。f.喷嘴与岩面垂直，距受喷面0.61.2m。g.施工中经常检查出料弯头和管路接头，发现堵管立即关闭总进气阀。(3)喷射混凝土质量控制要求喷射混凝土质量控制要求序号检查项目规定值或允许偏差检查方法1混凝土强度(Mpa)符合设计要求
14、进行混凝土抗压试验2喷层厚度(mm)平均厚设计厚；检查点数的80%设计厚；最小厚度设计厚的2/3每一个循环检查1个断面，每2m检查1点 3平整度（mm）允许偏差100断面仪测量断面轮廓1.2锚杆隧道采用的锚杆为22砂浆锚杆和25中空锚杆。锚杆设计长度为3米、3.5米和4米三种规格。锚杆安装质量验收方法进行抗拔试验，要求抗拔试验平均值不小于设计值（一般铁路设计为150KN），单根锚杆抗拔力最小值不小于设计值的90%。（1）砂浆锚杆施工方法：采用锚杆作业台架钻锚杆孔，人工安装锚杆。利用高压风或水清孔，完成后采用后退式注浆（砂浆强度不低于M20），以保证孔内浆液饱满。施工技术措施：孔径要与锚杆直径相
15、匹配，锚杆孔径应大于设计的锚杆直径15mm；孔深一般比锚杆稍长一些(10cm 以上)；孔向应按设计方向钻进，垂直岩面；锚杆规格、长度、直径符合设计要求，锚杆杆体除锈除油。施工工艺见图。否孔口处理验 收固定锚杆插入锚杆杆体加工锚杆杆体注浆准备补孔不合格合格测量定锚杆孔位钻 孔清 孔验 孔填塞砂浆或锚杆药进行下道工序砂浆锚杆施工工艺流程图（2）25中空锚杆施工方法钻孔深度比设计孔深长10cm 以上时，可安装锚杆，并用不低于M20强度的砂浆注浆，采用注浆机注浆，注浆压力符合设计要求；一般按单杆达到设计注浆量作为结束标准。当注浆压力达到设计终压不少于20分钟，进浆量仍达不到注浆终量时，亦可结束注浆，并保证锚杆孔浆液注满。最后
