2021年井点降水施工方案(污水管道).pdf

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1、成彭路雨污水管道工程井点降水施工方案编制：成彭路、汉彭路工程项目部审核：时间：精品w o r d 可编辑资料-第 1 页，共 7 页-2/7 一、现场概况莲塘路现开始进行污水管道施工，在开挖W1井位及 20 米管道沟槽后发现基底发生流砂状况，根据设计该管道基础底标高为-1.888，对照地质勘察报告说明：标高（+1.15）（-2.20）段为粘土层、标高（-2.20）（-3.52）段为亚粘土层，管道设计时未考虑到流砂对施工产生的影响，而该管道坡度为0.2%，路段中大部分管道基础标高均在-1.90-1.50之间。根据现场实际情况，为保证管道的正常铺设及满足工程的进度要求，需尽快对流砂情况进行处理，由

2、于土层渗水量大，且沟槽开挖深度较深，建议采取井点降水的施工措施来降低地下水位，使水位控制在管道基础底50 以下，具体施工方法可使用：双排轻型井点降水法或者管井降水法。（井点降水法：它是在拟建工程的基坑周围设能渗水的井点管，配置一定的抽水设备，不间断地将地下水抽走，使基坑范围内的地下水降低至设计深度。井点法防水适用于具有不同几何形状的基坑，它有克服流砂、稳定边坡的作用。由于基坑内土方干燥，有利机械化施工，缩短工期，保证工程质量与安全。）二、井点降水施工工艺（一）、双排轻型井点降水轻型井点系在基坑外围埋设井点管，深入含水层内启动抽精品w o r d 可编辑资料-第 2 页，共 7 页-文档编码:C

3、W7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2

4、Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:C

5、W7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2

6、Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:C

7、W7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2

8、Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:C

9、W7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G13/7 水设备，使地下水位降低到基坑底以下。具有机具设备简单，装拆方便，降水效果好，可提高边坡的稳定，防止流砂现象的发生，降水费用较低等特点，但需配置一套井点设备，适用于渗透系数为 0.1-5.0 的土及土层中含有大量的细砂和粉砂的土，或明沟排水易引起流砂、坍方的基坑降水工程。1、井点管施工程序是：放线定位铺设总管安装井点管、填砂砾滤料、上部填粘土密封用弯联管将井点管与

10、总管接通安装集水箱和排水箱开动真空泵排气，再开动离心水泵抽水测量观测地下水位变化。2、确定井点的位置，污水沟槽采用分层开挖的方法施工，首层土方开挖后沿沟槽两侧，沿台阶各布置一排井点，井点管距坑壁不应小于 1.0m，间距由 1.0-1.2m，埋深根据降水深度及含水层位置决定，但必须埋入含水层内。3、井点管埋设完毕应接通总管。总管设在井点管外侧 50处，将配好的管子逐根放入沟内，在端头法兰穿上螺栓，垫上橡胶密封圈，然后拧紧法兰螺栓，总管端部，用法兰封牢。一旦井点干管铺好后，用吸水胶管将井点管与干管连接，并用号铁丝绑牢。一组井点管部件连接完毕后，与抽水设备连通，接通电源，即可进行试抽水，检查有无漏气

11、、淤塞情况，出水是否正常，如有异常情况，应检修后方可使用，如压力表读数在0.15-0.20，真空度在 93.3 以上，表明各连接系统无问题，即可投入正常使用。精品w o r d 可编辑资料-第 3 页，共 7 页-文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H

12、2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q

13、1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H

14、2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q

15、1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H

16、2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q

17、1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G14/7 4、井点使用时，应保持连续不断抽水，并配用双电源以防断电。一般抽水 3-5d 后水位降落漏斗基本趋于稳定。5、施工注意事项 A、成孔时，如

18、遇地下障碍物，可以空一井点，钻下一井点。井点管滤水管部分必须埋入含水层内。B、井点使用时，正常出水规律是“先大后小，先混后清”，如不上水，或水一直较混，或出现清后又混等情况，应立即检查纠正。真空度是判断井点系统是否良好的尺度，如真空度不够，表明管道漏气，应及时修好。井点管淤塞，可通过听管内水流声，手扶管壁感到振动。如井点管淤塞太多，严重影响降水效果，应逐个用高压水反复冲洗井点管或拔出重新埋设。C、在土方开挖后，应保持降低地下水位在基底 500 以下，以防止地下水扰动地基土体。（二）、管井（深井）降水管井（深井）井点降水是在深基坑周围埋置深于基底的井管，依靠深井泵或深井潜水泵将地下水从深井内揚升

19、到地面排出，使地下水位降至坑底以下。深井井点降水具有排水量大、降水深、不受吸程限制、井距大等优点，但其一次性投资大，成孔质量要求高。深井井点降水适用于渗透系数较大（10250），土质为砂土等，地下水丰富、降水深、面积大的情况。精品w o r d 可编辑资料-第 4 页，共 7 页-文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G

20、1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF

21、4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G

22、1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF

23、4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G

24、1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF

25、4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G15/7 钻孔准备1、平整场地：按施工总体部署平面图先把钻孔位置、排水管等所需占

26、地划出，清理、平整。2、钻孔放线：测放出钻孔位置，并挖点坑。3、井管：井管为管或预制砼管，管长1315米。4、滤布：采用玻璃丝布作滤布，玻璃丝的规格为80120 目。可以防止被保护土层中的砂质土颗粒经地下渗流液化流失，从而避免地基扰动破坏。滤布采用双层包裹，防止外层滤布损坏，内部保护土层。钻孔首先定位，将钻头对准点位，垂直插入预先已经挖好的井点小坑。采用潜水钻孔泥浆固壁法成孔，施工自地表开钻，控制护壁的泥浆比重为1.153左右。为确保成孔的垂直度，钻孔底座必须牢固、基础强度高，开钻时要精确检查钻杆的垂直度，这样成孔垂直度才好，安装的井管和成孔才会同心。成孔后加强洗井，井管安装时泥浆比重需控制在

27、1.053左右，同时泥浆的含砂率要小于 4%。滤料回填及井管安装洗孔完成后，拆除钻杆并进行井管安装，回填滤料。地下水位以下井管采用透水管。下井管时先将井管牢固连接，并保证井管垂直、居中。井管下完后需及时回填滤料，滤料采用洁净级配良好的中粗砂，滤料需均匀分布在井管四周，确保出水通畅。精品w o r d 可编辑资料-第 5 页，共 7 页-文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D

28、3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ

29、1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D

30、3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ

31、1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D

32、3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ

33、1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G16/7 滤料填筑高程同

34、地层相对应，需高出含水层0.51.0m。深井的运行管理1、施工期间需确保深井连续抽水，施工用电须达到100%的保证率，同时要配足够数量的备用水泵。选择一个管井为观察孔，保证降水水位线在污水沟槽50 以下。2、在临近建筑物边设置一个沉降观察点。降水后需进行24 小时的不间断观测，一旦发现有沉降须立即停止降水或减少降水，并要做好记录、分析。综合而言井点降水法：施工简便，操作技术易于掌握；适应性强，可用于不同几何图形的基坑；降水后土壤干燥，便于机械化施工和后续工作工序的操作；井点作用下土层固结，土层强度增加，边坡稳定性提高；地下水通过滤水管抽走，防止了流砂的危害；节省支撑材料，减少土方工程量等，为目

35、前在含水透水位土层实施的一种行之有效的方法。四、保证安全施工的技术措施1、建立安全生产管理网络，对安全生产实行横向到边，纵向到底的层层管理，做到责任落实到人。2、对存在的安全隐患进行全面的分析，确定安全生产的关键控制点，对薄弱环节进行重点管理，形成点面结合的管理模式。3、加强现场工人的安全思想教育，养成自主学习安全生产操精品w o r d 可编辑资料-第 6 页，共 7 页-文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ

36、1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D

37、3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ

38、1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D

39、3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ

40、1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D

41、3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ

42、1H2L1A2G17/7 作规程的风气，提高工人的安全生产意思，落实责任，严肃规章制度。4、执行安全生产责任制，安全生产检查制，实行安全生产交底制，严格执行上岗证制度，坚持事故报告制度。5、注意工地用电安全，指定专业电工定期检查线路，电箱，电机等用电设施。各类电器均需有漏电保护装置配电箱、电线盒等设施，按照操作规程加强防雨、防水设施，防止漏电伤人。（附：井点降水各方案综合造价对比表）平江新城天筑路、莲塘路工程项目部 2006年 5 月 28 日精品w o r d 可编辑资料-第 7 页，共 7 页-文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7

43、U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3

44、 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7

45、U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3

46、 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7

47、U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3

48、 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1文档编码:CW7U7D3Q1L4 HF4G9D2D2Z3 ZZ1H2L1A2G1