含水率对土体抗剪强度影响研究  

Research on the Influence of Water Content on the Shear Strength of Soil

作　　者：张亚英 Zhang Yaying(Gansu Corps,China Geological Exploration Center for Building Materials Industry,Tianshui,Gansu 741000)

机构地区：[1]中国建筑材料工业地质勘查中心甘肃总队,甘肃天水741000

出　　处：《江西建材》2023年第9期32-33,36,共3页Jiangxi Building Materials

摘　　要：文中研究了非饱和土壤的抗剪强度特性。研究发现,含水量对非饱和土壤的抗剪强度起到至关重要的影响。试验结果表明,随着含水量的增加,非饱和土壤的抗剪强度下降。试验中选择了不同含水量和垂直应力条件下的非饱和土壤进行剪切试验,得出了通过Mohr-Coulomb准则进行百分比数据下的粘聚力及内摩擦角曲线变化规律,发现含水量25%时为特征数据,超过这个数值粘聚力显著下降,将影响结构稳定性和完整性,这些数据对矿产开发和施工的安全可靠性提供了技术支持。This article studies the shear strength characteristics of unsaturated soil.Research has found that water content plays a crucial role in the shear strength of unsaturated soils.The experimental results indicate that with the increase of water content,the shear strength of unsaturated soil decreases.The cohesion and internal friction angle under percentage data were obtained using the Mohr Coulomb criterion,and the variation pattern was observed in the form of a curve.It was found that the characteristic data was at 25%water content,and a significant decrease in cohesion beyond this value would affect structural stability and integrity,These data provide theoretical data support for the safety and reliability of mineral development and construction.

关 键 词：含水量 抗剪强度 非饱和土 粘聚力 内摩擦角 

分 类 号：TU43[建筑科学—岩土工程]