类石材料--灰泥的冻融过程

Serious failure on the slope of rock ground can be caused by a cyclic action of freezing and thawing in the cold regions. The frost susceptibility and the effect of freezing and thawing onthe rock material, however, have not been well investigated. In order to find out the freezing effect on the rock materials, mortar specimens are frozen as a pseudo-rock material under the constant rate of freezing by means of controlling the temperature of both ends of specimen. The freezing process is given one-dimensionally to the cylindrical samples in the laboratory to simulate the in-situ freezing phenomena in the natural ground. Formation of ice lens, frost heave and water intake during freezing process are observed on the mortar specimen under constant freezing rate, which probably causes cracks or large deformation in the real rock ground. The values of the velocity of elastic wave propagation are compared before and after freezing process to estimate the degree of weathering due to freezing and thawing.     

桐上饰面石材矿地质特征浅析——以贵州省镇宁自治县为例

饰面材料需求量随着城市基础建设变化而变化,主要体现在对饰面材料材质要求更高等方面,对饰面材料的环保性能提出了更高的要求。桐上饰面石材矿位于扬子准地台-黔南台陷-望谟北西向构造变形区北部,区内灰岩、白云岩和粘土岩和泥灰岩广布,加之热液变质作用影响,导致热液变质型大理岩饰面材料品质高,可作为饰面石材进行开采,具有较好的经济效益。     

聚能爆破在石材切割应用中的试验研究

摘 要 简单分析了聚能爆破装药在孔内爆破的力学效应‚阐明了聚能爆破对岩石定向破裂 的控制机理。在聚能爆破切割石材过程中‚聚能射流起到前期切割出定向裂缝的作用‚石材 的最终开裂由后期爆破产生的气体的准静态胀楔作用来完成。通过提高炸药爆速、增大装药 密度等方法可以提高聚能装药爆炸后形成射流的能量和改善聚能爆破切割石材的效果。     

花岗石石材抛光技术

阐述花岗石石材抛光技术，磨抛工具及其改进，并分析抛光质量的影响因素以及抛光质量的评定方法。     

厦门海沧海岸地区采石废弃地生态恢复研究

本文分析了厦门海沧海岸地区花岗岩资源开发利用现状和存在的问题，运用生态恢复理论讨论了矿山采石高难度地生态恢复技术途径和模式。