模拟煤体的材料选择及力学参数

Material Selection and Mechanical Parameter of Simulated Coal

基于真实煤体基本物理力学特性以及孔隙结构,根据工程分类的方法,以抗压强度、波速、弹性模量和空间结构分布为指标,将煤体分成特硬煤、坚硬煤、硬煤、中硬煤和软煤5类不同强度的煤体。采用相似理论进行煤体模拟材料选择并确定出模拟煤体材料及其配比,通过各项参数实测分析验证了煤体工程分类的合理性。

Based on the study of the basic physical and mechanical properties and pore structure of real coal,according to the method of engineering classification,the coal is divided into extra-hard coal,hard coal,and hard coal from compressive strength,wave velocity,lastic modulus and spatial structure distribution as indicators.Coal,medium-hard coal and soft coal five types of coal bodies with different strengths.The similarity theory was used to select coal simulation materials and determine the simulation coal materials and their proportions.Finally,the rationality of coal engineering classification is verified through actual measurement and analysis of various parameters.