废弃泥浆改性同步注浆材料试验研究

泥水盾构施工过程中会产生大量的废弃泥浆,针对废弃泥浆的处理难题,介绍了一种新型泥浆处理方法。将废弃泥浆作为盾构同步注浆材料应用于同步注浆液,并研究了泥浆对同步注浆液性能的影响。研究结果表明:用废弃泥浆配制的同步注浆液分层度、泌水率明显降低,很好地解决了同步注浆液泵送过程中的堵管问题,凝结时间有一定的增加,可通过控制泥浆比重与泥浆量来缩短凝结时间。流动性也能满足注浆要求。并用废弃泥浆配制出抗水分散性较好的同步注浆材料,最大7 d水陆强度比达0.81。

Experimental study on the waste mud modified synchronous grouting materials

A large amount of waste mud will be produced during the construction of underground engineering, according to the waste mud treatment problem, this paper introduces a new type method, which is use waste mud as shield synchronous grouting material and applied to the synchronous grouting, and studied the influence of grouting liquid mud. the study shows that: Prepared with waste slurry grouting liquid stratification, the bleeding rate decreased significantly, solve the problem of pipe blockage in the process of synchronous grouting, the setting time is increased, which can be shortened by controlling the proportion and amount of mud. Liquidity can also meet the grouting. and using waste mud to make synchronous grouting materials with good resistance to water dispersion, the maximum compressive strength of 7 day is 0.81.