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胶质层最大厚度Y值是强粘结性烟煤分类的主要指标。国家标准》烟煤胶质层指数测定方法》(GB479—64)自颁发以来。最大胶质层厚度的确定都是人工绘图计算。借助电子计算机来确定Y值,可提高速度和精度。本文对此作一初浅探讨。一、数学模型测定结果的各个点用最小二乘法拟合—近似曲线函数,得到层面曲线,即测定的M个数据yi(i=1、2、……M)可近似表达成x的N次方程: y=f(x)=a_0+a_1x+a_2x~2+
Y value of the maximum thickness of the gummy layer is the main index of the strongly bonded bituminous coal classification. National Standard “Determination of bituminous coal layer index method” (GB479-64) since its issuance. The determination of the maximum gummy layer thickness is calculated manually. Using a computer to determine the Y value increases speed and accuracy. This article makes a preliminary discussion. First, the mathematical model of the measurement results of each point by least squares fit - approximate curve function, the level curve, that is, the measured M data yi (i = 1,2, ... M) can be expressed approximately x times Equation: y = f (x) = a_0 + a_1x + a_2x ~ 2 +