Elastic waves have different attenuation laws when propagating in various materials, which
is one of the important challenges in the application of non-destructive testing methods, such …

In-situ stress measurement is a key task in deep underground mining activities. An efficient
stress measurement technique is important for determining the safety of the surrounding …

有利油气储集的层状沉积地层中广泛存在裂缝, 属于含裂缝VTI 介质. 综合考虑层状介质和裂缝
介质的特点, 基于几何相似原理, 设计并制作了含定向排列裂缝的VTI 介质物理模型 …

混凝土的物料组成影响着弹性波特征参数的衰减规律, 该规律的研究对于提高工程安全检测精度
意义重大. 以0.1~ 0.25 mm, 0.5~ 1 mm, 1~ 2 mm 和2~ 5 mm 粒径的砂为骨料制成板状混凝土 …

为研究不同含水率含孔试样破坏过程中的超声波特征, 开展了不同含水率条件下的含孔试样单轴
压缩试验, 并采用RSM-SY7 超声波仪测定了压缩过程中的波速, 得到了不同含水率含孔试样的 …

为解决袖阀管注浆中套壳料出浆裂缝少所导致的注浆压力大, 浆液扩散均匀性差问题,
提出了采用脉冲气体来对套壳料进行预先劈裂造缝的方法, 对套壳料在脉冲气体作用下的声发射 …

The gas drainage borehole is a typical hole-containing structure, and its failure is similar to
the hole-containing specimen. To study the characteristics of wave velocity and power …

The crack widely exists in reservoir rocks and the change of the stress state may lead to its
deformation or even closure, which has a great influence on the oil and gas accumulation …

Cracks are widespread in layered sedimentary formation, which are important reservoir
spaces and seepage channels. In macro perspective this feature can be approximately …

Elastic waves cause energy loss during the transmission of coal measures. These losses
include propagation loss, dielectric absorption loss, scattering loss, and frequency migration …