摘要
为合理利用地铁盾构施工产生的渣土以有效降低其运输成本及堆放对环境造成的危害,以武汉市轨道交通19号线为背景,利用不同比例渣土替代砂和膨润土制备注浆材料,重点研究了渣土掺量对注浆材料的流动度、力学性能及微观结构的影响。结果表明:增加泥岩渣土掺量显著降低注浆材料流动度,但泌水现象得到改善。水胶比为0.9时,75%掺量盾构渣土的注浆材料28 d抗压强度可达2.94 MPa,盾构渣土注浆材料硬化体内部结构更为致密,无明显结构缺陷。结合工程应用,对盾构渣土注浆工艺进行探讨,为盾构渣土就地利用提供技术参考。
In order to make reasonable use of the muck produced by the subway shield construction to effectively reduce its transportation cost and the harm to the environment caused by stacking,This study focuses on Wuhan Rail Transit Line 19 and investigates the impact of different proportions of shield soil dregs substitution for sand and bentonite in grouting materials.Fluidity,mechanical properties,and microstructures were analyzed comparably.The results indicated that the fluidity of grouting materials were significantly reduced by the increase content of shield soil dregs,while the bleeding tendencies were improved.A compressive strength of 2.94 MPa at 28 d was achieved for the grouting material that 75%shield soil dregs and 0.9 water-binder ratio.This was attributed to denser internal structures.Furthermore,this study discusses the application of shield soil dregs grouting technology,this could provide valuable technical insights for in-situ utilization of shield soil dregs.
作者
闫革
范涛
张平
李玉博
张云
冷凯凯
YAN Ge;FAN Tao;ZHANG Ping;LI Yubo;ZHANG Yun;LENG Kaikai(Xinjiang Key Laboratory of Engineering Materials and Structural Safety,Kashi University,Kashi 844000,China;Wuhan Hanyang Municipal Construction Group Co.,Ltd.,Wuhan 430050,China;School of Civil Engineering Architecture and Environment,Hubei University of Technology,Wuhan 430068,China)
出处
《粉煤灰综合利用》
2025年第5期55-59,共5页
Fly Ash Comprehensive Utilization
关键词
隧道工程
盾构渣土
同步注浆
资源化利用
tunnel engineering
shield soil dregs
synchronous grouting
resource utilization
