DENGZhang-tie,YANGSheng-hu,LIXi-ge,et al.Research and Application of Key Technology for Super Deep and Long Distance Pipe Jacking Butt Joint Construction[J].China Water & Wastewater,2023,39(2):125-132.
超深长距离顶管对接施工关键技术研究与应用
- Title:
- Research and Application of Key Technology for Super Deep and Long Distance Pipe Jacking Butt Joint Construction
- Keywords:
- super deep and long distance; pipe jacking; butt joint; reverse pull; measurement correction
- 摘要:
- 武汉市大东湖核心区污水传输系统工程是目前国内一次顶进最长、埋深最深的小直径曲线岩石顶管项目。为解决该项目支隧顶管工程在超深及复合地层条件下，长距离曲线顶管无法继续顶进的问题，拟采用反顶对接施工技术。结合项目实际情况，对反顶对接方案进行了比选，从反顶工作井设计、顶力估算、顶进及纠偏、顶管机反拉、顶管施工测量等方面对顶管对接关键技术进行了分析。实际应用效果表明，顶管反顶对接施工顺利，较好地解决了工程难题。
- Abstract:
- The sewage transmission system project in the core area of Dadong Lake in Wuhan is the longest and deepest primary pipe jacking project of small-diameter curved rock in China. In order to solve the problem that the long-distance curved pipe jacking cannot continue jacking under the conditions of ultra-deep and composite stratum, the reverse butt jacking construction technology is proposed to solve it. Combined with the project practice, the reverse butt jacking schemes are compared and selected. The key technologies of pipe jacking butt joint are analyzed and selected from the aspects of anti-jacking working well design, jacking force estimation, jacking and deviation correction, pipe jacking machine reverse pulling, pipe jacking construction survey and so on. The practical application results show that the reverse jacking butt joint construction is smooth, and the engineering problems are well solved.
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