煤矿安全2017，Vol.48Issue(5)：61-63,68,4.DOI:10.13347/j.cnki.mkaq.2017.05.017
松软煤体巴西劈裂试验研究及应用
Experimental Study on Soft Coal Brazilian Split and Application
摘要
Abstract
Soft coal of 66207 working face in Xinzhuangzi Coal Mine in Huainan Mining Area was taken as the research object in order to obtain the effect of different ratios of thickness to radial dimension and moisture content on soft coal splitting strength.Brazilian splitting test of coal with different ratios of thickness to radial dimension and moisture content were carried out,and the results were taken into the tensile formula considering filler strip and sample contact angle.The results showed that when moisture content is similar,with the increase of ratio of thickness to radial dimension of sample,tensile strength decreases gradully,the downward trend of ratio of thickness to radial demension and tensile strength curves slow down,and the curve is approximately level after the ratio of thickness to radial dimension is greater than 0.6;when the ratio of thickness to radial dimension is the same,with the increase of moisture content,tensile strength of coal sample is on the decline as a whole.关键词
松软煤体/厚径比/含水率/巴西劈裂/抗拉强度Key words
soft coal/ratio of thickness to radial dimension/moisture content/brazilian split/tensile strength分类
矿业与冶金引用本文复制引用
林峰,荣浩宇..松软煤体巴西劈裂试验研究及应用[J].煤矿安全,2017,48(5):61-63,68,4.基金项目
国家自然科学基金资助项目(U1361208) （U1361208）
