赤泥-粉煤灰地聚合物盾构壁后注浆对地表沉降的影响研究  

Influence of Shield Tunnel Backfill Grouting with Red Mud-fly Ash Geopolymer on Surface Settlement

作　　者：吴子涵 鹿庆蕊[1] 谢槟槟 陈士军[1] 戴涛 陈黎明 WU Zihan;LU Qingrui;XIE Binbin;CHEN Shijun;DAI Tao;CHEN Liming(School of Civil and Architectural Engineering,East China University of Technology,Nanchang 330013;Ganzhou Management Center,Jiangxi Communications Investment Group Co.,Ltd.,Ganzhou 341000)

机构地区：[1]东华理工大学土木与建筑工程学院,南昌330013 [2]江西省交通投资集团有限责任公司赣州管理中心,赣州341000

出　　处：《现代隧道技术》2025年第1期285-291,共7页Modern Tunnelling Technology

基　　金：国家自然科学基金(52168044);国家重点实验室开放基金(NR1930);江西省教育厅科技项目(GJJ2200702).

摘　　要：为解决传统注浆材料中水泥的大量使用导致的环境污染问题,并实现固废资源化再利用的目标,以南昌地铁1号线某区间隧道工程为背景,采用赤泥、粉煤灰等工业废渣为原料制备新型地聚合物注浆材料,并与传统水泥双液浆进行相关物理特性的对比研究。借助有限元数值仿真,分析两种浆液壁后注浆加固对地表沉降的影响规律。结果表明:新型地聚合物双液浆具有良好的物理力学特性;在南昌富水、自稳性差的地层中,采用两种浆液注浆加固后的地表沉降值相差较小,且理论值与实际值吻合度较高,利用工业废渣制备而成的赤泥-粉煤灰地聚合物双液浆环境友好性强。To address the environmental pollution caused by the extensive use of cement in traditional grouting mate⁃rials and to promote the resource recycling of solid wastes,a novel geopolymer grouting material was prepared using industrial waste residues such as red mud and fly ash,taking the construction of a running tunnel of the Nanchang Metro Line 1 as a case study.Comparative research was conducted on the physical properties of the newly developed material and traditional cement-based dual-liquid grouts.Using finite element numerical simulation,the influence of backfill grouting reinforcement using the two types of grouts on surface settlement was analyzed.Results indicate that the novel geopolymer dual-liquid grout exhibits excellent physical and mechanical properties.In Nanchang's water-rich and low self-stability strata,the surface settlement values after grouting reinforcement with both types of grouts show minimal differences,with high consistency between theoretical and measured values.The red mud-fly ash geopolymer dual-liquid grout,prepared from industrial wastes,demonstrates strong environmental friendliness.

关 键 词：赤泥-粉煤灰 盾构壁后注浆 地表沉降 双液浆 工业废渣 

分 类 号：U454[建筑科学—桥梁与隧道工程]