黑龙江科技大学学报2018，Vol.28Issue(2)：136-141,6.DOI:10.3969/j.issn.2095-7262.2018.02.003
不同组合条件下煤岩组合体的力学特性
Mechanical characteristics underlying coal and rock combinations under different combination conditions
摘要
Abstract
This paper is an effort to analyze the influence of combi-nation condition on the mechani-cal properties of coal-rock combination.The analysis is focused on the uniaxial compressive tests for the combination modes, such as fine sandstone-coal-coarse sandstone, fine sandstone-coarse sandstone-coal and fine sandstone-coarse sandstone, using TAW-2000KN rock mechanics testing system.The results show that along with an increasing proportion of coarse sandstone comes an increase in the uniaxial com-pressive strength and the elasticity modulus of the fine sandstone-coal-coarse sandstone combination;there is a maximum uniaxial compressive strength and the elasticity modulus of the fine sandstone-coal-coarse sandstone combination as when 40%proportion occurs in the fine sandstone, coarse sandstone of each composition unit;an increase in fine sandstone results in a fluctuation change in the uniaxial com-pressive strength and the elasticity modulus of the fine sandstone-coarse sandstone-coal combination,sug-gesting an overall increasing trend in the impact energy index;the position of coal in the combination has a great impact on the uniaxial compressive strength, elastic modulus and impact energy index; and the proportion of fine sandstone-coal-coarse sandstone has a great influence on the impact energy index.This result may provide a reference for the research into the mechanical behavior of coal rock combinations in coal mine underground mining.关键词
煤岩体/力学特性/组合方式Key words
coal and rock combination/mechanical property/combination mode分类
矿业与冶金引用本文复制引用
兰永伟,张国华,刘洪磊,盖迪,陈刚,李兴伟..不同组合条件下煤岩组合体的力学特性[J].黑龙江科技大学学报,2018,28(2):136-141,6.基金项目
黑龙江省普通高等学校采矿工程重点实验室开放课题(2013-KF04) （2013-KF04）
国家自然科学基金项目(51774122 （）
51474099) （）
