顶管施工在老观寨水库输水线路中的应用及工艺改进
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- 英文论文题名：Application and improvement of pipe jacking construction in water conveyance line of old view reservoir
- 论文作者：符运友
- 英文论文作者：Fu Yun-you ; Henan water conservancy NO.2 engineering bureau
- 年：2017
- 作者机构：河南省水利第二工程局;
- 论文关键词：沉井 ; 顶管 ; 存在问题 ; 改进工艺
- 英文论文关键词：Open caisson ; Pipe jacking ; Existing problems ; Improvement process
- 会议召开时间：2017-06-01
- 会议录名称：2017年6月建筑科技与管理学术交流会论文集
- 语种：中文
- 分类号：TV672.2
- 学会代码：HSBY
- 会议名称：2017年6月建筑科技与管理学术交流会
- 会议地点：中国北京
- 主办单位：《建筑科技与管理》组委会
- 学会名称：北京恒盛博雅国际文化交流中心
- 页数：2
- 文件大小：200k
- 原文格式：O
- 会议级别：全国
摘要
老观寨入库输水线路工程顶管总长567m,中间工作井将顶管分隔成两段,工作井沉井法井体采用三节制作,一次下沉的施工方法。顶管施工采用土压泥水平衡施工,提前做好顶力计算,配置能够满足需要的机械尤为必要。由于地质情况的变化,顶管在顶进过程中,由于粘土岩遇水后,变得又黏又软,尤其是粘度高,超出预期,使得刀盘被黏泥包围,形成蘑菇头状,以致于顶进过程中无法进尺,经过对设备进行改造,进一步优化改进施工工艺,问题得到了妥善解决。
Lao guan zhai project total length of jacking pipe is three 567 m,and the intermediate working well divides the pipe jacking into two sections,and the well sinking method adopts the construction method of the sinking of the well and the sinking at one time.Pipe jacking construction adopts earth pressure slurry balance construction,and calculates the jacking force ahead of schedule,so it is necessary to configure the machinery that can meet the needs.Due to changes in geological conditions,in the process of pipe jacking,the clay rocks in water,become sticky and soft,especially high viscosity,more than expected,making the cutter surrounded by mud,the formation of mushroom head,unable to process the footage into the top after the equipment modification,further optimization of construction technology,the problem has been resolved
Lao guan zhai project total length of jacking pipe is three 567 m,and the intermediate working well divides the pipe jacking into two sections,and the well sinking method adopts the construction method of the sinking of the well and the sinking at one time.Pipe jacking construction adopts earth pressure slurry balance construction,and calculates the jacking force ahead of schedule,so it is necessary to configure the machinery that can meet the needs.Due to changes in geological conditions,in the process of pipe jacking,the clay rocks in water,become sticky and soft,especially high viscosity,more than expected,making the cutter surrounded by mud,the formation of mushroom head,unable to process the footage into the top after the equipment modification,further optimization of construction technology,the problem has been resolved
引文
[1]葛春辉.顶管工程设计与施工[M]2012.