煤田地质与勘探Issue(1)：17-21,5.DOI:10.3969/j.issn.1001-1986.2015.01.004
煤岩动静力学参数关系试验研究
Experimental study on the relationship between dynamic and static mechanical parameters of coal
摘要
Abstract
Experimental study on relationships between dynamic and static mechanical parameters of coals is highly significant for study on displacement and deformation characteristics of coal and design of support project. Coal samples taken from the 3th seam in Xinhe mine are shaped into standardized cylinder samples (Φ50 mm×100 mm). P-wave and s-wave velocities were measured using transducer with a frequency of 500 kHz. The uniaxial compre-ssion tests were carried out on the MTS815.03 Electro-hydraulic servo-controlled testing machine to obtain the static elastic modulus and Poisson’s ratio. Experimental results showed that the correlativity between dynamic elastic modulus and s-wave velocity of coal is better than that with p-wave velocity. The ratio of Ed/Es is mainly distributed between 1.4 and 1.7 in the tested samples. There is a good linear relationship between dynamic/static elastic modulus and dynamic/static Poisson’s ratio in tested samples.关键词
煤岩/弹性模量/泊松比/纵波速度/横波速度Key words
coal/elastic modulus/Poisson’s ratio/p-wave velocity/s-wave velocity分类
天文与地球科学引用本文复制引用
于师建,杨永杰,刘伟韬..煤岩动静力学参数关系试验研究[J].煤田地质与勘探,2015,(1):17-21,5.基金项目
山东省自然科学基金项目(ZR2011DM014；ZR2011EEM019)；国家自然科学基金项目(51274135) （ZR2011DM014；ZR2011EEM019）
