微切削模式下岩石骨料的耐磨性能及影响因素试验研究

发布时间：2018-04-13 12:09

本文选题：岩石骨料 + 耐磨性能　；参考：《水力发电学报》2017年06期

【摘要】：分别针对花岗岩、玄武岩、大理岩、灰岩和白云岩5种岩石骨料在微切削模式下的耐磨性能进行了试验研究,分析了影响岩石骨料耐磨性能的内在因素。结果表明:花岗岩的耐磨强度最高,约为耐磨强度最低的白云岩的13倍;玄武岩的耐磨强度次之,约为白云岩的5倍;大理岩、灰岩和白云岩的耐磨强度依次降低。不同岩石的维氏显微硬度相对大小能在一定程度上反映岩石耐磨强度的相对大小,但二者之间并不存在简单的正相关关系;岩石的矿物组成和孔结构是影响其耐磨强度的主要因素;矿物晶粒的尺寸和形貌也会也一定程度上影响岩石的耐磨强度。
[Abstract]:The wear resistance of five kinds of aggregates, granite, basalt, marble, limestone and dolomite, under the microcutting mode was studied, and the internal factors affecting the wear resistance of rock aggregates were analyzed.The results show that the wear resistance of granite is 13 times of that of dolomite with the lowest wear resistance, the wear resistance of basalt is about 5 times of that of dolomite, and the wear resistance of marble, limestone and dolomite decreases in turn.The relative value of Vickers microhardness of different rocks can reflect the relative size of rock wear resistance to some extent, but there is no simple positive correlation between them.The mineral composition and pore structure of rock are the main factors affecting the wear resistance of rock, and the size and morphology of mineral grain will also affect the wear resistance of rock to some extent.
【作者单位】：武汉大学水资源与水电工程国家重点实验室;
【基金】：科技部973资助项目(2015CB655101;2013CB035901) 国家自然科学基金(51379163;51579195)
【分类号】：TV41

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