干湿交替作用对煤体坚固性系数的影响实验研究  

Experimental Study on Influence of Dry-wet Circulation on Coal Firmness Coefficient

作　　者：杨志伟[1] 马衍坤[1,2] 杨双文 张蒙[1] 聂献忠[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001 [2]河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地,河南焦作454000 [3]山西焦煤汾西瑞泰正中煤业,山西介休032000

出　　处：《煤矿安全》2015年第8期1-3,7,共4页Safety in Coal Mines

基　　金：中国博士后科学基金资助项目(2013M541815);国家自然科学基金资助项目(51404009);河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金资助项目(WS2013A02);安徽省省级大学生创新创业训练计划资助项目(AH201310361016)

摘　　要：水力化措施是目前煤矿广泛采用的瓦斯治理方法,而水力化措施的应用必然使煤体承受干湿交替作用,并影响煤体的突出指标。针对干湿交替作用对煤体坚固性系数的影响,采用低瓦斯煤层、突出煤层和冲击煤层的煤样,测试了周期干湿循环作用下煤体坚固性系数,获得了干湿交替作用对煤体坚固性系数的影响规律,分析了干湿交替对煤体的劣化效应。结果表明,经过不同次数的干燥-浸水交替作用后,各组煤样的坚固性系数均有不同程度的降低,其总体变化趋势是随着干湿交替作用次数增加f值呈阶段性降低。Hydraulic technology is widely used in gas control method,and hydraulic measures will enable coal to withstand the impact of wet- dry circulation and the impact parameters of coal. Experimental tests of coal firmness coefficient on different coal that collected from low gas coal seam,outburst coal seam and rock- burst coal seam under dry- wet circulation have been carried out. The influence laws of dry- wet circulation on coal firmness coefficient are obtained; and the deterioration effect of coal under the action of dry- wet circulation is analyzed. The results show that each coal firmness coefficient is reduced in varying degrees after alternating action of drying and wetting,the overall trend is that the number of f value is lower periodically with the increase of alternation frequency of wetting and drying.

关 键 词：干湿交替 坚固性系数 突出参数 劣化效应 水力化措施 

分 类 号：TD713[矿业工程—矿井通风与安全]