不良地质条件下顶管始发井逆作法施工技术研究  

Study on Top-down Construction Technology of Pipe Jacking Starting Well under Bad Geological Conditions

作　　者：毛勇[1] 熊亮[1] 罗飞轮 MAO Yong;XIONG Liang;LUO Feilun(Sinohydro Bureau 5 Co.,LTD.,Chengdu Sichuan 610066)

机构地区：[1]中国水利水电第五工程局有限公司,四川成都610066

出　　处：《四川水力发电》2024年第4期4-9,共6页Sichuan Hydropower

摘　　要：以内蒙古引绰济辽工程为例,阐述了该工程顶管始发井在不良地质条件下采用的逆作法施工工艺,辅以超前灌浆、井点降水、监控量测以及信息反馈等施工手段成功解决不良地质条件下始发井逆作法开挖支护及混凝土施工带来的一系列质量与安全问题,有效地避免了采用传统竖井基坑施工存在的各种风险,总结出不良地质条件下逆作法施工工艺和关键工序以及控制要点,所取得的经验可为今后类似工程参考。Taking the Diversion Project from the Zhuoer River to the Xiliao River in Inner Mongolia as an example,this paper expounds the top-down construction technology of the pipe jacking starting well under bad geological conditions,by means of advanced grouting,well point dewatering,monitoring,measuring,and information feedback,a series of quality and safety problems under bad geological conditions have been solved by excavation and support and concrete construction of top-down starting well,it effectively avoids all kinds of risks in the construction of traditional shaft foundation pit,sums up the construction technology and key procedures of top-down construction method under bad geological conditions and control points,and the experience obtained can provide reference for similar projects in the future.

关 键 词：引绰济辽 不良地质条件 始发井 逆作法 施工技术 

分 类 号：TV7[水利工程—水利水电工程] TV554TV52TV5545