地下连续墙在施工后漏水的防治措施研究
2016-11-16赵洪军张战胜
赵洪军 张战胜

摘 要:地下连续墙技术在我国的应用日益广泛,被相继推广到土木工程中的各个领域。随着高层建筑和深基础工程越来越多,对施工技术的要求也越来越高,必将极大促进地下连续墙施工工艺的快速发展。地下连续墙施工时采用逐段施工法,一个单元槽段施工完毕后进行下一槽段的施工。地下连续墙质量控制主要是成槽质量控制、混凝土灌注质量控制和接头混凝土绕流预防控制以及墙缝处漏水控制。本文重点介绍了地下连续墙在施工过程中,墙缝渗漏的预防及控制措施。
关键词:地下连续墙; 地下连续墙渗漏; 注浆; 封堵
【文章编号】1627-6868(2016)06-0032-03
Abstract:Underground continuous wall technology has been used increasingly in our country be generalized to successively in civil engineering fields.As high-rise buildings and deep foundation engineering more and more,the construction technology request for more and more is also high, will greatly enhance the construction process of underground continuous wall of rapid development.The construction of underground continuous wall self-weigh method, used when a unit slot section construction finished carries on the next slot section construction .Underground continuous wall quality control is mainly into slot quality control, quality control and joint pouring concrete concrete flow around prevention and control.This paper mainly introduces the density of the slurry of underground continuous wall construction of influence, some partial construction difficulties and solutions, construction of underground continuous wall leaking problem and wall grouting engineering exploration. Toe.
Keywords: Underground continuous wall of underground continuous wall Piling leakage wall slip casting block off
1.前言
地下连续墙具有防渗、截水、承重、挡土等功能,它可以作为临时施工设施,也可以作为永久性结构。近年来,从国内外地下连续墙在施工领域发展情况来看,体现出以下几方面特点:
(1)从成墙材料看,地下连续墙正在向着刚性和柔性两个方向快速发展。现在的刚性地下连续墙,混凝土强度可达C70,很多情况下还要配置大量钢筋,甚至使用钢结构。而柔性地下连续墙采用的材料强度有时还不到1Mpa,但却具有很高的抗渗能力。
(2)从工程规模看,墙体可以做得更深、更厚,墙身体积甚至已达几十万立方米。
(3)从工程作用看,地下连续墙不再只用于处理深厚覆盖层和坝体渗透,而且在软风化岩中也越来越多地采用防渗墙,以代替过去常用的帷幕灌浆。这无疑改变了我们过去的那种认为防渗墙无法解决基岩风化层渗透问题的看法。……
