辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(1)：71-82,12.
膨胀岩地层盾构壁后混杂纤维注浆浆液性能研究
Research on the performance of hybrid fiber grouting slurry behind the shield tunnel segment in expansive rock stratum
摘要
Abstract
To address the issue of shield tunnel segment being adversely affected by the expansion deformation resulting from water absorption in special surrounding rock when tunneling through expansive rock stratum,a grouting slurry formulated with sodium bentonite,cement,fly ash,river sand,and water is used as the matrix for the backfill behind the shield tunnel segment.Polypropylene fiber(PPF)and basalt fiber(BF)are blended into this slurry to enhance the cushioning capacity,deformation resistance,and toughness of the grouting stone body.By setting different levels of fiber volume contents and fiber volume hybrid ratios,the influence pattern of hybrid fiber on the properties of grouting slurry was explored,and the mechanism of action was analyzed.Finally,a mechanical property prediction model was established.The research results indicate that the addition of hybrid fiber has a significant impact on the properties of the grouting slurry,particularly exhibiting notable improvement and toughening effects on the mechanical properties of the grouting stone body.The research conclusions can provide a reference for the application of hybrid fiber in the grouting project behind the shield tunnel segment.关键词
膨胀岩地层/盾构壁后注浆浆液/混杂纤维/体积掺量/体积混掺比/力学性能预测模型Key words
expansive rock stratum/grouting slurry behind the shield tunnel segment/hybrid fiber/volume content/volume hybrid ratio/mechanical property prediction model分类
交通运输引用本文复制引用
郭天宇,李慎刚,刘晋宁,蒋琛,籍湛..膨胀岩地层盾构壁后混杂纤维注浆浆液性能研究[J].辽宁工程技术大学学报（自然科学版）,2025,44(1):71-82,12.基金项目
国家自然科学基金项目(51878127) （51878127）
中央高校基本科研业务费项目(N180104013) （N180104013）
