深基坑降排水專項施工方案

1、目錄目錄一、編制依據和參考資料一、編制依據和參考資料..................................................................................................................................2二、工程概況二、工程概況...................................................

2、...................................................................................................2三、施工部署三、施工部署............................................................................................................

3、..........................................2四、施工方案四、施工方案......................................................................................................................................................34.14.1施工工藝流程施工

4、工藝流程..............................................................................................................................................34.24.2施工機具施工機具...........................................................

5、.........................................................................................34.34.3材料材料........................................................................................................................

6、......................................44.44.4技術準備技術準備......................................................................................................................................................44.54.5井點安裝井點安裝..

7、....................................................................................................................................................4五、質量要求及保證措施五、質量要求及保證措施.................................................

8、.................................................................................6六、安全保證措施六、安全保證措施..........................................................................................................................

9、..................10七、文明施工七、文明施工....................................................................................................................................................11八、應急措施八、應急措施..........................

10、..........................................................................................................................11九、井點降水計算書九、井點降水計算書..............................................................................

11、..........................................................129.19.1水文地質資料水文地質資料............................................................................................................................................12

12、9.29.2計算依據及參考資料計算依據及參考資料................................................................................................................................139.39.3計算過程計算過程....................................................

13、................................................................................................132少連續(xù)或間斷抽水，直至基礎施工完畢、回填土為止；5、土方開挖及基礎結構施工階段，組織人員對基坑的變形進行檢測，若遇緊急狀況，立即啟動應急預案。6、基坑井點降水布置與距基坑外邊沿至少1m距離之外。具體布置示意圖如下：基坑井點降水平面布置圖基坑井

14、點降水平面布置圖四、施工方案四、施工方案4.14.1施工工藝流程施工工藝流程放線定位―鋪設總管―沖孔―安裝井點管、填砂礫濾料、上部填粘土密封―用彎聯(lián)管將井點管與總管接通―安裝集水箱和排水管―開動真空泵排氣―再開動離心水泵抽水―測量觀測井中地下水位變化。4.24.2施工機具施工機具1、管：φ55，壁厚為3.0mm的無縫鋼管，長6.0m左右，一端用厚為4.0mm的鋼板焊死，在此端1.4m長范圍內，在管壁上鉆φ15mm的小圓孔，孔距為25mm