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为研究水泥土力学性能与声发射参数持续时间的关系,利用声发射技术对水泥土的无侧限压缩过程进行全程监测。通过对水泥土力学特性参数进行分析,得到水泥土在无侧限压缩下应力随时间的变化过程大致分为四个阶段;同时对水泥土试件的声发射信号参数持续时间进行分析,得出水泥土压缩过程中各声发射特性参数持续时间也大致分为四个阶段,并且通过对比力学曲线和持续时间分布图得出力学曲线的变化阶段与持续时间分布图的变化基本相一致。
In order to study the relationship between the mechanical properties of cement soil and the duration of acoustic emission parameters, the unconfined compression process of cement soil was monitored by acoustic emission technique. Through the analysis of mechanical parameters of cement soil, the change of stress with time under unconfined compression can be divided into four stages. At the same time, the duration of acoustic emission parameters of cement soil specimens is analyzed, The duration of acoustic emission parameters in the process of soil compression is also roughly divided into four stages, and through the comparison of mechanical curves and duration distribution diagrams, the change phases of the mechanical curves are basically consistent with the changes of the duration distribution diagrams.