泥质粉砂岩各向异性强度特征

本文研究了某地泥质粉砂岩各向异性强度特征。在作用力与层理面成不同角度条件下,进行了单轴压缩试验.间接拉伸试验和双面剪切试验,取得了相对于层理的不同方向的强度值。试验结果表明,层状岩石的弱面对岩石的强度值有明显的影响。因此,我们认为在各项岩石强度试验中都必须将层状岩石的各向异性特征作为重要条件加以考虑。

Strength Properties of Anisotropic Rock of an Argillaceous Siltstone

In this paper, strength properties of anisotropic rock have been measured for an argillaceous siltstone from somewhere. Under the condition of a series of different angles between the actual stress and the stratification planes, uniaxial compression test, Brazilian tensile test and double shear test have been conducted, and the ultimate strength of different orientations relative to the stratification planes have been obtained. The experimental results show that weak plane of foliated rocks has a marked effect on rock ultimate strength. Accordingly, we think it necessary to consider anisotropic properties of foliated rocks as one of the important factors in each test of rock ultimate strength.