地下室降水施工方案

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2.1

工程概况

2.2

基坑周边环境及条件

68168.

6.18

10.59

95795.1

10.6429295.00 7.5512.5513.88

0.195641956.1

4.1

3.1

工程地质条件

规范》（

3.2

水文地质条件

5.1

基本参数

5.2

计算基坑涌水量

/

5.3

预估总抽水量(Qz)

d

），

d

），

6.1

基坑降水设计

6.2

降水和排水系统设计

7.1

放井位

7.2

挖泥浆池

7.3

挖探坑

7.4

成孔

7.5

换浆7.6

吊放井管

7.7

填滤料

7.8

洗井

7.9

水泵安装7.10

铺设排水管网

7.11

抽降7.12

水位观测

7.13

抽降及维护EE

8.1

分层总和法计算附加沉降

hi i

i

E

hi

8.2

对周边环境的影响

8.3

防止降水井施工和抽水产生地下空洞的措施

9.1

沉砂池的位置、计量方法和仪器型号

9.2

排水计量的检查和维护9.3

减少抽水量措施

抽水管抽水管排水管入水管 橡胶管用铁丝绑扎

井盖250mm排水管保护井衬

砖砌自然地面

管礅降水井

计值结或力达变化设速计对或值剖达到报规警定。值不连监大次与应相报天，警基计值结或力达变化设速计对或值剖达到报规警定。值不连监大次与应相报天，警基。变四护坑测坡角水应点钢提不筋层出侧累周坑天外小弯天设病对护及。、当，值一，测顶根桩置降内平顶1顶度降水在重筑对力位：监移测工坡个程中侧点内布选东置天在一测桩根楼护冠坡，桩上

四间目选择

4共布

测。构连续3）天率超应过、7-7应剖进不测值不于30mm以》坑后3个筑桩5剖平整位高大为度测锚、频常锚建情筑护共剖次内在工桩沉力建大明测点在点。测侧测级围基及力择进每行栋监顶测的

监测项布为桩沉降监高度位移达倾坑的70%度率监剖续3，28大两临次桩要深求物（H深移、监现围墙监矩力当况监物坡沉个水据布监置测说内测置13上监一范应间力置坑监竖角6层住梁应力计建置物剖、3-3

测报天

对范、基监建顶桩频顶、每，各锚手计异杆的内，杆测楼桩板两各点的竖深《、水监监平距2m移天测北桩布内2在北

测计