袋装砂井技术交底.doc

交底内容：
1、 本工程袋装砂井施工部位为非机动车道、人行道、绿化带和边坡，井径为7cm,其施工间距为1米，正方形布置，具体按照技术部门绘制的布桩图进行布置。
2、 施工机械为导管式振动打桩机；砂袋用聚丙烯编织袋；砂采用渗水率较高的中、粗砂，含泥量不应大于3%。
3、 施工工艺流程如下：
（1）整平原地面（2）摊铺20cm砂垫层（3）测量放线：用小木桩定出每个桩位，测出砂垫层面高程（4）机具对准桩位（5）打入套管（6）沉入砂袋（7）拔出套管（8）埋砂袋头
4、 质量要求：
（1） 允许偏差
 

Cards on the table contents:
1, the construction of Sand Wick Road construction sites for non-motor vehicles, sidewalks, green belts, and slope, well diameter of 7cm, the construction of distance is 1 meter square layout, specific technology sectors in accordance with plans drawn to pile layout.
2, construction machinery, pipe vibration pile driver; sand bags PP woven bags; sand with water seepage rates are relatively high, the coarse sand, mud content should not exceed 3%.
3, the construction process is as follows:
(1) The whole plain surface  (2) Paving 20cm sand cushion  (3) measurement and setting: using small wooden blocks set each pile location, measure the level sand pad elevation  (4) Pile  Alignment equipment (5) into the casing  (6) sinking sand bags  (7) pull the tube  (8) head buried in sand bags
4, quality requirements:
(1) Tolerance