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用捣碎法测定煤的坚固性系数——f值,方法简单易行,操作方便,尤其适宜现场应用.但是,由于试验时所取参数不同,试验结果各异.本文现就如何选取合理的试验参数,以保证捣碎法试验的准确可靠进行分析.试验对象选定南桐矿务局砚石台矿六号煤层.该煤层干燥松脆,强度低.试验结果对类似煤层有参考价值.试验所取的参数有以下几种:1、试样粒度:采用20、30和40毫米三种.
The crushing method to determine the solid coefficient of coal - f value, the method is simple and easy to operate, especially for field applications.But due to the different parameters of the test, the test results are different.This paper on how to choose a reasonable Test parameters to ensure the accuracy and reliability of the mashing test were carried out.Experimental objects were selected for the No.6 coal seam of Yan Shitai Mine in Nantong Bureau of Mines and the coal seam was dry and crisp with low strength.The test results are of reference value to similar coal seams. Test the parameters taken are the following: 1, the sample size: the use of 20,30 and 40 mm three.