桑植隧道径向注浆施工方案(1).doc
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1、目 录1 适用范围12 作业准备12.1 内业准备12.2 外业准备13 技术要求14 施工程序与工艺流程24.1 施工程序24.2 工艺流程35 施工要求25.1 施工准备25.2 施工工艺25.3 施工要点45.4 施工控制要点56 径向注浆施工注意事项57 质量标准68 安全及环保要求68.1 安全要求68.2 环保要求7loan management (post) review: 1, approval criteria have been implemented; 2, the contract is correct; 3, in line with the contract, pa
2、yment; 4, no other major cases against loan security;、Reviewed by: date of record form 9: qilu bank borrowing by single years of maximum amount a maximum no-loan borrowers: borrowers: . Borrower name number, line of credit expiry date year month day to year month day maximum number of years in the l
3、oan contract are the top line opened, the borrowed and requested your bank opened credit lines above, is hereby requested. Borrower signature: date agreed to open credit lines. Customer Manager signature: date agreed to open credit lines. Loan review signature: date line cancellation-I did not use t
4、he loan amount, your bank credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature: date case,
5、 agree to write off loans. Loan review signature: date of record form 16: qilu self credit for credit card cancellation application form name of borrower ID number and credit limit expiration date year month day to year month day year contract number self-service card-I do not use credit, your bank
6、credit lines to be cancelled. -Credit loan principal repayment, your bank credit lines to be cancelled. Borrower signature: date-unused credit lines, agree to write off loans. -Credit loan principal repayment, agree to write off loans. Customer Manager signature:中铁十八局集团有限公司黔张常铁路项目经理部桑植隧道径向注浆施工方案 1 适
7、用范围本方案适用于桑植隧道DK148+570DK148+670、DK151+660DK151+720、DK151+720DK151+810、DK152+282DK152+312段径向注浆施工。2 作业准备2.1 内业准备在施工前组织技术人员认真学习实施性施工组织设计,阅读、审核施工图纸,澄清有关技术问题。熟悉规范和技术标准,查阅相关施工案例,认真调查隧道围岩地质情况、了解施工条件、技术水平和设备装置的施工参数。制定施工安全保证措施,对施工人员进行技术交底,对参加施工人员进行上岗前技术培训,考核合格后持证上岗。2.2 外业准备孔口管、注浆材料等施工材料的采购,钻孔、注浆等设备的选用与采购。材料的
8、试验,配合比的设计。水、风、电的设置,其他辅助措施的准备。4 对径向注浆的施工里程进行施工测量与放样。3技术要求检查开挖的断面中线及高程,开挖轮廓线符合设计要求。注浆钻孔采用风钻,钻孔直径50mm,孔深4m,孔口插打直径42mm,L=4m,t=3.5mm钢管。导管间距1.5m*2.0m(环向*纵向),按梅花型布置。每延米钻注浆孔8.9孔,压注水泥浆3.45m3。注浆采用普通水泥浆,水灰比为1:1,注浆压力1.52.0Mpa。满足设计文件及隧道规范的其他技术要求。4 施工程序与工艺流程4.1 施工程序开挖支护钻孔下注浆管制浆液径向注浆单孔注浆效果检查结束。4.2 工艺流程见下页“图4.2-1径向
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