[1]梁桥欣.富水软弱地层顶管施工关键技术研究[J].大众科技,2023,25(6):16-19.
　Research on Key Techniques of Pipe Jacking Construction in Soft and Rich Water Strata[J].Popular Science & Technology,2023,25(6):16-19.
点击复制

富水软弱地层顶管施工关键技术研究()
分享到：

《大众科技》[ISSN:1008-1151/CN:45-1235/N]

卷:
25
期数:
2023年6
页码:
16-19
栏目:
建设与工程
出版日期:
2023-06-20

文章信息/Info

Title:
Research on Key Techniques of Pipe Jacking Construction in Soft and Rich Water Strata
作者:
梁桥欣
（广西机电职业技术学院，广西 南宁 530007）
关键词:
顶管; 栽头; 涌水涌砂; 双液注浆; 高压旋喷桩; 管道开裂
Keywords:
pipe jacking;  planting head;  water and sand gushing;  double-liquid grouting;  high-pressure rotary jet grouting pile; pipeline cracking
文献标志码:
A
摘要:
土压平衡顶管机穿越泥炭质黏土、富水粉细砂等软弱地层时，由于地基承载力偏低、地层渗透系数大，易引发土压平衡顶管机“栽头”、涌水涌砂等情况，文章以某在建的城市电力管廊项目为依托，在对泥炭质黏土、富水的粉细砂层进行双液注浆、高压旋喷桩加固处理的基础上，对土压平衡顶管机的顶管施工关键技术进行了总结，同时结合顶力过大导致管道开裂的实例，详细论述了处理措施的选择及注意事项，最终保证了顶管施工过程的安全，为类似工程提供一定的借鉴。
Abstract:
When the earth pressure balance pipe jacking machine passes through weak strata such as peaty clay and water rich fine sand, due to the low bearing capacity of the foundation and the high permeability coefficient of the strata, it is easy to cause the soil pressure balance pipe jacking machine to "sink", water gushing and sand gushing. Based on the project of a city power pipeline gallery under construction, this article conducts double liquid grouting and high-pressure rotary jet grouting pile reinforcement treatment on the peaty clay and water rich fine sand layers, This paper summarizes the key technologies of soil pressure balance pipe jacking machine for pipe jacking construction, and discusses in detail the selection of treatment measures and precautions based on the example of pipeline cracking caused by excessive jacking force. Ultimately, the safety of the pipe jacking construction process is ensured, providing a certain reference for similar projects.

参考文献/References:

[1]　何耀涛. 市政工程中顶管施工技术要点[J]. 中国市政工程，2008(6): 71-72.[2] 王雪，王成虎，马孝春，等. 国内外顶管施工技术的对比分析[J]. 施工技术，2017(S2): 1018-1023.[3] 游励晖. 道路下穿既有铁路箱形框架桥顶进法施工技术[J]. 铁道标准设计，2004(9): 49-50.[4] 银英姿，赵强，崔芳静，等. 土压平衡矩形顶管施工引起的地表沉降探究[J]. 长江科学院院报，2019(1): 95.[5] 张涛. 矩形顶管在轨道交通通道中的沉降分析[J]. 中国市政工程，2019(4): 36.

备注/Memo

备注/Memo:
【收稿日期】2023-02-23【作者简介】梁桥欣（1987－），男，广西桂林人，广西机电职业技术学院高级工程师，研究方向为地下工程、岩土工程。
更新日期/Last Update: 2023-08-03