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1、半填半挖路基施工作业指导书1、目的指导半填半挖路基工程的实施。2、适用条件及范围本作业指导书适用于半填半挖路基工程的实施。3、编制依据3.1公路路基施工技术规范；3.2公路工程质量检验评定标准；3.3安邵高速公路两阶段施工设计图第二册路基、路面设计图；3.4湖南省高速公路精细化施工实施细则；3.5有关现场踏勘调查资料，水文地质调查资料。4. 施工工艺4.1. 工艺流程施工准备测量放线地表清理 挖台阶路堑开挖基床底层以下填筑、埋设土工格栅 基床底层填筑、埋设土工格栅 基床表层填筑 4.2. 施工方法及要求半填半挖路基轨道下横跨挖方与填方两部分时，挖方区分硬质岩及土质、软质岩、强风化硬质岩分别采用
2、爆破开挖或机械开挖施工。挖方区按设计坡度施工完成后，全断面同时填筑施工。填筑施工按设计要求采用合格填料，分层填筑，机械压实。当挖方区为硬质路堑时，如为节理不发育的非可溶岩时，基床表层换填10cm厚的C25混凝土，如为可溶岩及节理发育的硬质岩时，基床表层应换填0.4m的C25混凝土，同时应采用C15片石混凝土或混凝土嵌补凹坑、溶沟、溶槽及溶蚀裂缝等。基床以下路堤与路堑连接处开挖台阶，台阶高不小于1m。挖方为土质、软质岩及全风化硬质岩时，挖至设计标高后，分层换填符合200km/h以上规范及设计要求的填料。基床以下路堤与路堑连接处开挖台阶，台阶高不小于0.6m。对边坡设计有边坡加固的，采用土工格栅对
3、边坡进行加固。4.3. 过渡段路基工程施工质量保证措施（1）施工中把路基工程作为主体结构工程来对待，保证路基工程质量零缺陷，满足基础高平顺性要求。（2）施工前组织参加施工的管理人员、技术人员、作业人员进行技术培训和交底，使全体施工人员了解设计意图，熟悉工程内容、特点、施工方案及各项要求，确保工程顺利进行。编制路基重点（控制工程）施工组织设计以及路基各类工程施工作业指导书用于指导施工。（3）在进行地基处理前，根据施工图设计提供的地质资料进行现场复核和补充地质勘探，并结合室内土工试验进行地基条件评价，确定地基处理措施。（4）路基填筑施工前对设计取土场及利用的填料进行核对、确认，并在施工中对进场填料
4、进行复查和试验，确保填料种类、质量符合设计要求。填料拌和、加工实行工厂化生产。（5）填筑施工时选取有代表性的填料进行摊铺压实工艺试验，试验填料碾压含水量、摊铺厚度、碾压机械、碾压遍数等施工工艺参数，经检验地基系数K30、压实系数K（改良细粒土）、动态变形模量Evd（级配碎石）、孔隙率n均满足设计要求后，确定施工工艺参数，再进行大面积路基填筑。路基填筑施工严格按工艺试验确定的参数施工，严格过程监控和质量检验、记录。（6）路基作为变形控制十分严格的土工构筑物，施工中根据设计要求对沉降变形进行动态监测，构筑纵横立体监测网络，对路基本体及地基沉降进行全面、系统的监测，并通过沉降预测、评估技术，达到优化
5、设计、控制工后沉降，确定无碴轨道结构施工和铺轨时间。（7）过渡段严格采用设计的填料类型与路基同步施工，保证刚度均匀过渡，使不均匀沉降满足设计及规范要求。（8）接触网支柱基础及声屏障基础在路基填筑至相应标高且沉降稳定后，采用螺旋钻机干式成孔，出碴直接装入自卸车远弃，旋挖钻机选用轮胎式或橡胶履带式，以此减少钻机对基床表面的磨损破坏。综合接地线、观测元器件、各类预埋管道与路基填筑同步施工，一次预埋合格，避免返工开挖，破坏路基稳定。运架梁车需通过的路基地段提前安排施工，保证在运架梁作业前1个月完成该段路基施工。（英文版 ） Two regulations promulgated for impleme
6、ntation is in the party in power for a long time and the rule of law conditions, the implementation of comprehensive strictly strategic plan, implementation in accordance with the rules and discipline to manage the party, strengthen inner-party supervision of major initiatives. The two regulations s
7、upporting each other, the adhere to a positive advocate, focusing on morality is of Party members and Party leading cadres can see, enough to get a high standard; around the party discipline, disciplinary ruler requirements, listed as negative list, focusing on vertical gauge, draw the party organiz
8、ations and Party members do not touch the bottom line . Here, the main from four square face two party rules of interpretation: the first part introduces two party Revised regulations the necessity and the revision process; the second part is the interpretation of the two fundamental principles of t
9、he revision of laws and regulations in the party; the third part introduces two party regulations modified the main changes and needs to grasp several key problems; the fourth part on how to grasp the implementation of the two regulations of the party. and revised the necessity and revised history o
10、f the CPC Central Committee the amendment to the Chinese Communist Party members and leading cadres honest politics several guidelines and column 1 by 2015 to strengthen party laws and regulations focus. Two party regulations revision work lasted a Years, pooling the wisdom of the whole party, ideol
11、ogical consensus, draw historical experience, respect for the wisdom of our predecessors, which reflects the unity of inheritance and innovation; follow the correct direction, grasp the limited goals, adhere to the partys leadership, to solve the masses of the people reflect a focus on the problem.
12、The new revision of the and , reflects the partys 18 and the eighth session of the third, the spirit of the fourth plenary session, reflecting the experience of studying and implementing the General Secretary Xi Jinping series of important speech, reflects the partys eighteen years comprehensive str
13、ictly practice. (a) revised two regulations of the party need of in based on revised, the promulgation and implementation of January 2010, to strengthen the construction of the contingent of leading cadres play an important role. But with the party to manage the party strictly administering the deep
14、ening, has not been able to fully meet the actual needs. Content is too complicated, eight prohibition, 52 are not allowed to hard to remember, and also difficult to put into practice; the second is concisely positive advocated by the lack of prohibited provisions excessive, no autonomy requirements
15、; the third is banned terms and discipline law, both with the party discipline, disciplinary regulations repeat and Criminal law and other laws and regulations repeat; the fourth is to clean the theme is not prominent, not for the existing problems, and is narrow, only needle of county-level leading cadres above. is in 1997 based on revision, in
