广东水利水电Issue(4)：30-35,6.
富粉质黏土地层中含水率对力学特性与盾构掘进响应影响的试验研究
Experimental Study on the Influence of Moisture Content on Mechanical Properties and Shield Tunneling Response in Water-Bearing Soft Soil Strata
张岩 1王军辉 2阳建新 1宋作栋 1刘银华 1韦永能 1许卓淋3
作者信息
- 1. 中铁五局集团第二工程有限责任公司,湖南 衡阳 412002
- 2. 中铁开发投资集团有限公司,昆明 650200
- 3. 中南大学 土木工程学院,长沙 410075
- 折叠
摘要
Abstract
In water-bearing soft clay layers,variations in moisture content significantly influence the mechanical behavior of soils and pose challenges to shield tunneling safety and ground settlement control.To investigate the mechanical response of silty clay under different moisture conditions and its engineering implications,a series of unconsolidated undrained triaxial compression tests were conducted using remolded silty clay specimens collected from a typical shield section of Wuhan Metro Line 12.The test results show that when the moisture content exceeds 25%,both the shear strength and elastic modulus of the soil drop sharply,and the deformation characteristics shift from strain softening to rheological behavior.Based on this,a trial tunneling section was implemented in a soft clay zone with high moisture content,and the shield-induced surface heave,thrust force,and torque were continuously monitored.The field observations confirmed that soil deformation patterns were strongly correlated with moisture-sensitive strength degradation,verifying the consistency between laboratory findings and field responses.The research provides a theoretical and practical reference for tunneling parameter optimization and ground stability control in water-sensitive soft ground conditions.关键词
富水软土/粉质黏土/含水率/三轴试验/盾构掘进/地层沉降Key words
water-bearing soft clay/moisture content/silty clay/triaxial test/shield tunneling/ground settlement分类
交通工程引用本文复制引用
张岩,王军辉,阳建新,宋作栋,刘银华,韦永能,许卓淋..富粉质黏土地层中含水率对力学特性与盾构掘进响应影响的试验研究[J].广东水利水电,2026,(4):30-35,6.
