摘要
针对软土地层市政管线顶管施工过程中发生的龙门口渗水流沙和地表沉降、冒浆等工程问题,分析了顶管施工中触变泥浆配比、顶进偏差、顶力、注浆压力等关键施工参数对工程的影响.基于场地土层条件和实际工程情况,提出了其工程处理措施,并通过现场检测,工程事故处理效果良好.
In this article,given the problems of seepage and quicksand,surface settlement and mud gushing at Longmenkou during the pipe jacking construction of the municipal pipeline in soft soil stratum,the influence of key construction parameters such as thixotropic mud ratio,jacking deviation,jacking force and grouting pressure on the project is analyzed.Based on the soil condition of the site and the actual situation of the project,the engineering treatment measures are put forward.The field test proves that the engineering accident treatment effect is good.
作者
李磊
张建新
LI Lei;ZHANG Jianxin(School of Civil Engineering,TCU,Tianjin 300384,China;Tianjin Key Laboratory of Soft Soil Properties and Engineering Environment,TCU,Tianjin 300384,China)
出处
《天津城建大学学报》
2020年第4期266-270,311,共6页
Journal of Tianjin Chengjian University
关键词
顶管施工
渗水流沙
地表沉降
地表冒浆
工程措施
pipe jacking construction
seepage and quicksand
surface settlement
surface mud gushing
engineering measures
