回填土工程技术交底

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1、一、施工准备1、材料 土:不得含有有机杂质,使用前应过筛,粒径不大于50mm。2、主要机具 蛙式打夯机、手推车、铁锹、靠尺等。3、作业条件(1) 确定填方土料含水率控制范围、虚铺厚度要求、压实遍数等参数。回填土一般选用含水量在10%左右的干净粘性土(以手攥成团自然落地散开为宜),若土过湿,要进行晾晒或掺入干土、白灰等处理,若土含水量偏低,可适当洒水湿润;虚铺厚度为300mm,压实系数必须达到0.97。(2) 回填前应对基础、地下防水层、保护层进行检查验收,基础混凝土强度应达到要求,方可进行回填土。(3) 施工前应做好水平标志。二、操作工艺1、工艺流程基坑底地坪清理检验土质分层铺土、耙平夯打密实

2、检验密实度修整找平验收2、回填前应清理基坑底的垃圾、杂物。3、检验土的质量,粒径是否符合规定,土的含水量。4、基坑回填应在相对两侧或四周同时进行。深浅基坑相连时要先填深基坑,填至与浅基坑标高一致时,再与浅基坑一起填夯。分段填夯时,交错处做成阶梯形,上下接槎距离不小于1m。5、土应分层铺摊。蛙式打夯机每层铺土厚度为250300mm。每层土至少打三遍,要求一夯压半夯。6、每层填土夯实后,按规定进行环刀取样,测出干土的质量密度,达到要求后,再进行上一层的铺土。7、雨期施工时,防止地面水流入坑内,免得边坡塌方或浸泡基土。8、修整找平:填土全部完成后,应进行表面拉线找平。三、质量标准1、保证项目 基底处

3、理,必须平整干燥,无杂物。土料符合不含有有机杂质,粒径不大于50mm的要求。回填土按规定分层夯实。取样测定夯实后的干土质量密度,其合格率不小于90%。2、允许偏差项目项目允许偏差(mm)检验方法顶面标高+0,-50用水准仪或拉线尺检查表面平整度20用2m 靠尺和契型尺量检查四、成品保护1、施工时,对定位标准桩、轴线引桩、标准水准点、等,填运土时不得撞碰。2、夜间施工时,要有足够的照明。五、应注意的质量问题1、未按要求测定土的干土质量密度:回填土每层应测定夯实后的干土质量密度,密实度达到0.97,符合设计要求后才能铺上层土。2、回填土下沉:因虚铺土超过规定厚度或有较大的块,或夯实不够遍数,坑底有

4、有机杂物清理不干净造成。3、回填土夯压不密:应在夯压时对干土适当洒水,如土太湿夯不实呈“橡皮土”,应将其挖出,重新换好土夯实。六、安全注意事项1、 施工人员必须戴好安全帽。2、 注意防止高空落物伤人,使用机械注意用电安全。3、 具体见工长安全交底。(英文版 ) Two regulations promulgated for implementation is in the party in power for a long time and the rule of law conditions, the implementation of comprehensive strictly stra

5、tegic plan, implementation in accordance with the rules and discipline to manage the party, strengthen inner-party supervision of major initiatives. The two regulations supporting each other, the adhere to a positive advocate, focusing on morality is of Party members and Party leading cadres can see

6、, enough to get a high standard; around the party discipline, disciplinary ruler requirements, listed as negative list, focusing on vertical gauge, draw the party organizations and Party members do not touch the bottom line . Here, the main from four square face two party rules of interpretation: th

7、e 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 the revision of laws and regulations in the party; the third part introduces two party regulations modified the main changes and ne

8、eds 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 of the CPC Central Committee the amendment to the Chinese Communist Party members and leading cadres honest politics several guidel

9、ines 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, ideological consensus, draw historical experience, respect for the wisdom of our predecessors, which reflects the unity of inheritance

10、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. The new revision of the and , reflects the partys 18 and the eighth session of the third, the spirit of the fourth plenary session

11、, reflecting the experience of studying and implementing the General Secretary Xi Jinping series of important speech, reflects the partys eighteen years comprehensive strictly practice. (a) revised two regulations of the party need of in based on revised, the promulgation and implementation of Janua

12、ry 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 deepening, has not been able to fully meet the actual needs. Content is too complicated, eight prohibition, 52 are not allowed to hard

13、 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; the third is banned terms and discipline law, both with the party discipline, disciplinary regulations repeat and Criminal law a

14、nd 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 December 2003 the promulgation and implementation, to strengthen the construction

15、of the party play very important role. Along with the development of the situation, which many provisions have been unable to fully meet the comprehensive strictly administering the practice needs. One is Ji law, more than half of the provisions and criminal law and other countries laws and regulations Repetition; two is the political discipline regulations is no

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