CAJ | 학술논문

煤岩的动、静力学参数关系的试验研究，对研究煤岩的位移和变形特征及工程支护设计具有重要意义。将取自新河煤矿3煤的煤样加工成Φ50 mm×100 mm的圆柱体标准试件；采用500 kHz频率的纵横波换能器分别进行纵横波速度测试；在MTS815.03电液伺服试验机上进行单轴压缩试验，得到静态弹性模量和泊松比。试验结果表明：煤岩动弹性模量与横波速度相关性强于与纵波速度的相关性，煤岩介质的纵波对孔隙和裂隙发育程度的敏感程度要比横波高；煤岩试件 Ed/Es 比值主要集中在1.4~1.7，室内煤岩试件动、静弹性模量和动静泊松比之间存在较好的线性相关关系。
매암적동、정역학삼수관계적시험연구，대연구매암적위이화변형특정급공정지호설계구유중요의의。장취자신하매광3매적매양가공성Φ50 mm×100 mm적원주체표준시건；채용500 kHz빈솔적종횡파환능기분별진행종횡파속도측시；재MTS815.03전액사복시험궤상진행단축압축시험，득도정태탄성모량화박송비。시험결과표명：매암동탄성모량여횡파속도상관성강우여종파속도적상관성，매암개질적종파대공극화렬극발육정도적민감정도요비횡파고；매암시건 Ed/Es 비치주요집중재1.4~1.7，실내매암시건동、정탄성모량화동정박송비지간존재교호적선성상관관계。
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.