煤岩视密度简易测定方法  

Simple Method for Determination of Apparent Density of Coal and Rock

作　　者：韩森[1] 许石青[1] 杨宇 卯松[1] HAN Sen;XU Shiqing;YANG Yu;MAO Song(College of Mining,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025

出　　处：《大学物理实验》2022年第5期21-24,共4页Physical Experiment of College

基　　金：2020年度第二批新工科研究与实践项目“新工科人才学习质量评价制度研究与实践——以采矿工程专业为例”(EKYDZCH20201822)。

摘　　要：煤岩物理力学性质可为工程地质评价、工程建筑物设计以及岩石力学相关科研工作提供依据,煤岩视密度的大小可以反映煤岩体力学性质的优劣。通过将煤岩块放置于盛有液体石蜡的量筒中,根据量筒液面的变化,确定煤岩块的体积,再根据密度基本公式(质量除以体积)得到煤岩体视密度。该方法相较于蜡封法操作简便、快速,通过对两种煤岩块视密度测定结果进行T检验,得出两种方法测得视密度结果没有明显差异。煤岩视密度简易测定方法可以代替蜡封法,用于煤岩块视密度的快速测定。The physical and mechanical properties of coal and rock can provide basis for engineering geological evaluation,engineering building design and rock mechanics related scientific research.The apparent density of coal and rock can reflect the merits and demerits of mechanical properties of coal and rock.By placing coal blocks in a measuring cylinder filled with liquid paraffin,the volume of coal blocks is determined according to the change of liquid level in the measuring cylinder,and then the apparent density of coal and rock mass is obtained according to the basic density formula(mass divided by volume).Compared with wax sealing method,this method is simple and fast.Through T-test on the apparent density measurement results of two kinds of coal and rock blocks,it is concluded that there is no significant difference between the apparent density measured by two methods.The simple determination method of apparent density of coal rock can replace the wax seal method and be used for the rapid determination of apparent density of coal rock.

关 键 词：煤岩视密度 液体石蜡 简易测试 T检验 

分 类 号：O4-33[理学—物理]