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崩解性是膨胀岩最基本的特性之一,但在膨胀岩膨胀性的快速判别指标中少见关于崩解性及崩解物的定量指标。因此,有必要开展膨胀岩崩解物粒径分布特征和崩解性与膨胀性之间关系的研究,以对膨胀岩的快速判别进行补充。以浙江台州黑洞、蛇蟠岛和新疆大阪隧洞泥质岩样品为例,进行了干燥饱和吸水率和干燥饱和崩解试验,并分析了干燥崩解物粒径分布特征、耐崩解性指数及其与基于干燥饱和吸水率的膨胀性判别结果之间的关系。结果表明,膨胀岩膨胀性的强弱与其崩解物的最大含量粒组颗粒粒径、有效粒径和耐崩解性指数呈反相关关系。膨胀岩崩解物粒径分布的差异性对其膨胀性具有一定的指示意义。
Disintegration is one of the most basic characteristics of expansive rock. However, there are few quantitative indicators of disintegration and disintegration in the rapid discrimination index of expansive rock mass. Therefore, it is necessary to carry out the study on the relationship between the distributive characteristics of particle size distribution of disintegration rock and the disintegration and expansibility of swelled rock, in order to supplement the rapid discrimination of swelling rock. Taking the samples of the black tunnels in Taizhou, Snake Island and the tunnel in Osaka, Zhejiang as an example, the dry saturated water absorption and dry saturated disintegration tests were carried out. The characteristics of particle size distribution, disintegration resistance index and It is based on the relationship between the swelling discrimination result based on the dry saturated water absorption. The results show that the expansibility of expansive rock is inversely related to the particle size, effective particle size and disintegration resistance index of the granule group with the largest content of the disintegration products. The difference of the particle size distribution of the expansive rock disintegration material has some indication to its expansibility.