动水冲刷对水泥注浆材料力学性能的影响  

Effect of Flowing Water Scouring on Mechanical Properties of Cement Grouting Materials

作　　者：王宏亮[1] 罗冉[1] 刘夕奇 雷乐乐 翁磊 吴龙骥 WANG Hongliang;LUO Ran;LIU Xiqi;LEI Lele;WENG Lei;WU Longji(PowerChina Sinohydro Bureau 7 Co.,Ltd,Chengdu 610299,China;Pearl River Water Resources Research Institute,Guangzhou 510610,China;School of Civil and Architecture Engineering,East China University of Technology,Fuzhou 344000,China;School of Civil Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]中国水利水电第七工程局有限公司,成都610299 [2]珠江水利科学研究院,广州510610 [3]东华理工大学土木与建筑工程学院,抚州344000 [4]武汉大学土木建筑工程学院,武汉430072

出　　处：《硅酸盐通报》2025年第2期417-423,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金面上项目(52278412)。

摘　　要：为研究动水冲刷对水泥注浆材料力学性能的影响,对动水冲刷后留存浆液形成的结石体开展了单轴压缩试验,通过核磁共振和扫描电子显微镜表征了结石体的微观结构,结合微观结构讨论了动水冲刷对水泥注浆材料力学性能的影响机制。结果表明,动水冲刷导致注浆材料的单轴抗压强度和弹性模量明显下降,且随着水流速度增加,衰减程度愈加显著。同时,留存浆液结石体的峰值应变和极限应变均有所降低,当水流速度达到1.0 m/s时,留存浆液结石体表现出明显的脆性破坏特征。此外,留存浆液结石体中的微孔数量显著增加,这是其力学性能衰减的主要原因。本研究有助于深入理解注浆材料在动水冲刷环境中的真实力学性能。In order to study the effect of flowing water scouring on the mechanical properties of cement grouting materials,uniaxial compression tests were carried out on residual grout stone body after flowing water scouring.The microstructure of stone body was characterized by nuclear magnetic resonance and scanning electron microscopy.The effect mechanism of flowing water scouring on the mechanical properties of cement grouting materials was discussed in combination with microstructure.The results show that the uniaxial compressive strength and elastic modulus of grouting material decrease significantly due to flowing water scouring,and the attenuation degree becomes more significant with the increase of water flow velocity.At the same time,the peak strain and ultimate strain of residual grout stone body are reduced.When the water flow velocity reaches 1.0 m/s,the residual grout stone body shows obvious brittle failure characteristics.In addition,the number of micropores in residual grout stone body increases significantly,which is the main reason for the attenuation of its mechanical properties.This study is helpful to understand the real mechanical properties of grouting materials in flowing water scouring environment.

关 键 词：注浆材料 水泥浆液 动水冲刷 力学性能 微观结构 

分 类 号：TU525[建筑科学—建筑技术科学]