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为研究胶结物的尺寸,即胶结宽度、胶结厚度,对粒间胶结物力学特性的综合影响,在分析已完成的不同胶结宽度和厚度微观胶结模型试验基础上,提出了考虑胶结尺寸的胶结强度统一表达式。结果表明:不同胶结尺寸试样的峰值压缩和峰值拉伸荷载均与端部约束因子?和高宽比例因子?相关;不同胶结尺寸试样的抗剪和抗扭能力可以使用统一的表达形式,即拟合剪切系数和抗转动系数来表征;在三维峰值荷载空间中,不同胶结尺寸下胶结试样荷载包线均呈开口空心椭球状,随着胶结宽度的增大,试样峰值荷载增大,且增大趋势明显;随着胶结厚度的增大,试样峰值荷载减小,而当胶结厚度达到一定程度后,减小趋势不明显。
In order to study the effect of the size of the cements, ie the cementation width and the cementation thickness on the mechanical properties of the cemented cements, based on the analysis of the completed cementation width and thickness microscopic cementation models, the cementation strength Unified expression. The results show that the peak compressive load and peak tensile load of specimens with different cement sizes are related to the end restraint factor and the aspect ratio factor, respectively. The shear stress and torsional resistance of specimens with different cement sizes can be expressed in a unified way, That is, the fitted shear coefficient and the anti-rotation coefficient to characterize; in the three-dimensional peak load space, the cemented load wire under the different cementation size showed an open hollow ellipsoid. With the increase of cementation width, Large and obvious increasing trend. With the increase of the cementation thickness, the peak load of the sample decreases. When the cemented thickness reaches a certain level, the decreasing trend is not obvious.