地铁盾构泥浆制备同步注浆材料的性能研究  

Study on performance of synchronous grouting materials prepared by subway shield tunneling mud

作　　者：韩冰 HAN Bing(China Railway 14th Bureau Group Tunnel Engineering Co.,Ltd.,Jinan 250000,China)

机构地区：[1]中铁十四局集团隧道工程有限公司,山东济南250000

出　　处：《混凝土与水泥制品》2024年第9期92-95,共4页China Concrete and Cement Products

基　　金：国家自然科学基金项目(51708163);中铁十四局集团隧道工程有限公司项目(202160101146)。

摘　　要：基于某地铁盾构施工产生的盾构泥浆再利用问题,采用盾构泥浆全替代砂,同时掺入减水剂、早强剂、微硅粉、纤维等材料设计并制备了同步注浆材料,采用正交试验法研究了减水剂掺量(1.0%~2.5%)、早强剂掺量(3%~6%)、微硅粉掺量(10%~25%)对同步注浆材料稠度和抗压强度的影响。结果表明:经优化调整得到的同步注浆材料的最佳配合比为盾构泥浆2000 g、水泥500 g、聚丙烯纤维1 g、减水剂5 g、早强剂25 g、微硅粉125 g、水987.2 g,此时,同步注浆材料的稠度、抗压强度等指标均满足工程要求。Based on the issue of reusing shield tunneling mud generated during shield tunneling construction in a certain subway,the synchronous grouting material was designed and prepared by replacing all sand with shield tunneling mud and adding water reducing agent,early strength agent,micro silica powder,fibers and other materials,and the orthogonal experimental method was used to study the effects of water reducing agent content(1.0%~2.5%),early strength agent content(3%~6%),and micro silicon powder content(10%~25%)on the consistency and compressive strength of synchronous grouting materials.The results show that the optimal mix proportion of synchronous grouting material obtained through optimization and adjustment is 2000 g of shield tunneling mud,500 g of cement,1 g of polypropylene fiber,5 g of water reducing agent,25 g of early strength agent,125 g of micro silica powder,and 987.2 g of water.Besides,the consistency and compressive strength of the synchronous grouting materials meet the engineering requirements.

关 键 词：地铁盾构施工 同步注浆材料 配合比 正交试验 力学性能 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]