采矿与安全工程学报2012，Vol.29Issue(4)：511-515,5.
煤样抗压、拉强度与点荷载指标关系的试验研究
Study on Correlation Among Point Load Strength,Compression and Tensile Strength of Coal Samples
摘要
Abstract
A series of uniaxial compression test, Brazilian test, crushing compression test and point load test on coal samples from Zhangcun mine 3* coal seam were carried out. The results show that the dispersion degree increases by the following order: Brazilian test, uniaxial compression test, and point load test. After the irregular samples compared to the regular samples, the dispersion degree of point load test is obviously too large. Among all those regular samples, the point load strengths are roughly the same by parallel bedding and vertical bedding loading methods. There is a correlation among the Protodyakonov's coefficient, uniaxial compression strength, tensile strength and point load strength of the coal samples, which could obtains relevant parameters by their interconversion, and the conversion strength can be used as a reference of coal classification strength index.关键词
岩石力学/煤样/点荷载试验/强度/转换系数/离散系数Key words
rock mechanics/ coal sample/ point load test/ strength/ conversion coefficient/ dispersion coefficient分类
建筑与水利引用本文复制引用
苏承东,唐旭,倪小明..煤样抗压、拉强度与点荷载指标关系的试验研究[J].采矿与安全工程学报,2012,29(4):511-515,5.基金项目
国家自然科学基金项目(40902044 （）
50974054) （）
