深基坑降排水專項(xiàng)施工方案

1、目錄一、工程概況...................................................................................................................................................2二、本方案的編制依據(jù)......................................................

2、.............................................................................2三、降水設(shè)計(jì)有關(guān)參數(shù)...................................................................................................................................3

3、四、地質(zhì)條件..................................................................................................................................................34.14.1、地層情況、地層情況...................................................

4、.....................................................................................34.24.2、水文地質(zhì)條件、水文地質(zhì)條件..................................................................................................................

5、..............6五、降水目的...................................................................................................................................................6六、降水方案設(shè)計(jì)思路六、降水方案設(shè)計(jì)思路...............................

6、...........................................................................................7七、降水方案..........................................................................................................................

7、........................77.17.1、承壓水驗(yàn)算、承壓水驗(yàn)算....................................................................................................................................77.1.1、計(jì)算公式..................................

8、........................................................................................77.1.2、基坑不同開挖部位臨界開挖深度計(jì)算............................................................................77.1.3、減壓井的布設(shè)....................

9、................................................................................................87.27.2、潛水疏干、潛水疏干...........................................................................................................

10、.............................87.37.3、降水井井結(jié)構(gòu)、降水井井結(jié)構(gòu)..............................................................................................................................107.47.4、成井技術(shù)要求、成井技術(shù)要求......................

11、........................................................................................................107.57.5、成井施工、成井施工..................................................................................................

12、....................................107.5.1、無砂濾管井成井工藝....................................................................................................117.5.2、減壓井施工工藝....................................................

13、..........................................................127.5.3、成井施工控制表............................................................................................................14八、降水運(yùn)行施工.............................

14、...........................................................................................................148.18.1、疏干井降水運(yùn)行、疏干井降水運(yùn)行.........................................................................................

15、.................................148.28.2、減壓井降水運(yùn)行、減壓井降水運(yùn)行..........................................................................................................................158.38.3、降水運(yùn)行的注意事項(xiàng)、降水運(yùn)行的注意事項(xiàng).............

16、.....................................................................................................15九、深井降水的排水施工工藝........................................................................................................

17、.............169.19.1、工藝流程：、工藝流程：..................................................................................................................................169.29.2、HDPEHDPE雙臂波紋管排水系統(tǒng)雙臂波紋管排水系統(tǒng)......................

18、...................................................................................16十、降水應(yīng)急預(yù)案...............................................................................................................................

19、.......1710.110.1、電器、機(jī)械設(shè)備長期運(yùn)轉(zhuǎn)帶來的突發(fā)內(nèi)部障礙電器、機(jī)械設(shè)備長期運(yùn)轉(zhuǎn)帶來的突發(fā)內(nèi)部障礙..................................................................1710.210.2、遭非故意的其它施工機(jī)械的破壞而產(chǎn)生的運(yùn)行故障、遭非故意的其它施工機(jī)械的破壞而產(chǎn)生的運(yùn)行故障........................................

20、....................1710.310.3、圍護(hù)接縫或地質(zhì)鉆孔中的薄弱環(huán)節(jié)的突然冒水、圍護(hù)接縫或地質(zhì)鉆孔中的薄弱環(huán)節(jié)的突然冒水....................................................................1810.410.4、工作松懈、思想麻痹帶來的突發(fā)危害、工作松懈、思想麻痹帶來的突發(fā)危害....................................

21、................................................1810.510.5、人力、物資、設(shè)備供給保障不力而造成的危害人力、物資、設(shè)備供給保障不力而造成的危害..................................................................1810.610.6、承壓含水層上覆土層被貫穿、承壓含水層上覆土層被貫穿...................

22、.................................................................................1810.710.7、質(zhì)量通病的預(yù)防措施、質(zhì)量通病的預(yù)防措施.............................................................................................................

23、...1910.810.8、用電應(yīng)急措施、用電應(yīng)急措施............................................................................................................................1910.910.9、排水保證措施、排水保證措施.............................................

24、...............................................................................1910.1010.10、井管保護(hù)、井管保護(hù).......................................................................................................................

25、...........19十一、降水井的封堵.....................................................................................................................................2011.111.1、封井時(shí)間、封井時(shí)間.............................................

26、.......................................................................................2011.211.2、降水井、減壓井封井方法、降水井、減壓井封井方法...................................................................................................

27、.....2011.2.1、降水（疏干）井的封堵：............................................................................................20深基坑降排水專項(xiàng)施工方案2一、工程概況一、工程概況1、本工程場地位于天津市區(qū)以南、以西、道以北、路以東之地塊。其地理位置詳見下圖：2、本工程周邊環(huán)境距坑邊的距離詳見附圖83、本工程主體包括2幢32層辦公