深基坑降排水專項(xiàng)施工方案

1、目錄目錄一、編制依據(jù)和參考資料一、編制依據(jù)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(jī)具施工機(jī)具...........................................................

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

6、......................................44.44.4技術(shù)準(zhǔn)備技術(shù)準(zhǔn)備......................................................................................................................................................44.54.5井點(diǎn)安裝井點(diǎn)安裝..

7、....................................................................................................................................................4五、質(zhì)量要求及保證措施五、質(zhì)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(yīng)急措施八、應(yīng)急措施..........................

10、..........................................................................................................................11九、井點(diǎn)降水計(jì)算書九、井點(diǎn)降水計(jì)算書..............................................................................

11、..........................................................129.19.1水文地質(zhì)資料水文地質(zhì)資料............................................................................................................................................12

12、9.29.2計(jì)算依據(jù)及參考資料計(jì)算依據(jù)及參考資料................................................................................................................................139.39.3計(jì)算過程計(jì)算過程....................................................

13、................................................................................................132少連續(xù)或間斷抽水，直至基礎(chǔ)施工完畢、回填土為止；5、土方開挖及基礎(chǔ)結(jié)構(gòu)施工階段，組織人員對(duì)基坑的變形進(jìn)行檢測，若遇緊急狀況，立即啟動(dòng)應(yīng)急預(yù)案。6、基坑井點(diǎn)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(diǎn)降水平面布置圖基坑井

14、點(diǎn)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(shè)總管―沖孔―安裝井點(diǎn)管、填砂礫濾料、上部填粘土密封―用彎聯(lián)管將井點(diǎn)管與總管接通―安裝集水箱和排水管―開動(dòng)真空泵排氣―再開動(dòng)離心水泵抽水―測量觀測井中地下水位變化。4.24.2施工機(jī)具施工機(jī)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(nèi)，在管壁上鉆φ15mm的小圓孔，孔距為25mm