高楼倒虹吸单位工程施工总结报告.doc

 §1  工程概况

    高楼倒虹吸位于下泽村，紧靠高楼溪主河道，系原高楼渡槽41#－43#槽身的变更结构。全长59.7米（即总干２＋737.42－总干２＋797.12）。高楼倒虹吸由五节构成，依次为：一节9.9米长的竖井式进口段、二节10米长箱形倒虹吸、一节19.84米长的斜道式出口段、一节9.96米长的连接段。倒虹吸管身过水断面尺寸4.5*6.0米，管壁厚80厘米，设计流量为36m3/s，加大流量为39m3/s。总造价113.41万元。

§2  施工方案简述
一、 地基开挖与基础
   （一）、工程地质情况
根据开挖情况鉴定，该段地层的地质为：▼12.0以上为粉质粘土（含耕土），▼12.0--▼8.0为alQ4层砂砾石，▼8.0层面为砂砾石稍密,并含有少量泥，粒径以4—10CM为主，渗透系数K=72—162M/d左右。
该段地质地下水位最高为▼13.0，最低为▼11.0。
（二）、施工方法简述
     1、砂卵石开挖
    采用ROBEX200Le反铲开挖为主，局部50CM保护层
§ 1 Project Overview

    Ze tall inverted in the lower village, close to the main river channel high-rise, high-rise aqueduct system of the original 41 # -43 # Aqueduct change the structure. Length 59.7 m (ie total dry 2 +737.42 - +797.12 total dry 2). Inverted by the five high-rise structure, as follows: a 9.9 m long vertical pipe entrance, two 10-meter long box-shaped siphon, a 19.84 m long ramp-type Exit, a 9.96 m long connecting section. Inverted siphon cross section size of 4.5 * 6.0 m, pipe wall thickness of 80 cm, the design flow rate of 36m3 / s, increase the flow rate of 39m3 / s. The total cost of 1,134,100 yuan.

§ 2 Construction program brief
1, foundation excavation and foundation
   (A), engineering geology
According to excavation case identification, the geological formation of the paragraph as: ▼ 12.0 above for the silty clay (including cultivated soil), ▼ 12.0 - ▼ 8.0 to alQ4 gravel layer, ▼ 8.0 level for the gravel slightly dense, and contains a small amount of mud particle size to 4-10CM-based, permeability K = 72-162M / d or so.
Geological groundwater level of the highest ▼ 13.0, the lowest ▼ 11.0.
(B), the construction method outlined
     1, sand and gravel excavation
    Mainly by ROBEX200Le backhoe excavation, protective layer of local 50CM