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前言为了沿主断面计算地表移动,提出了各种不同的剖面函数,负指数函数法就是其中之一。这种方法所用的公式是:式中 W—剖面上一点的下沉值; W_o—剖面上的最大下沉值,这里不区分是充分采动还是非充分采动; x—剖面上一点的横坐标,以最大下沉点的横坐标为零; L—半个移动盆地之长,即由最大下沉点到盆地边界点的距离; a、b—决定于具体地质采矿条件的参数。其坐标系统如图1所示。
Preface In order to calculate the movement of the ground along the main section, a variety of cross-sectional functions are proposed, and the negative exponential function is one of them. The formula used in this method is: where W- is a point on the subsidence value; W_o- cross section of the maximum subsidence value, where the distinction is fully or not fully mining adequate mining; Coordinates, with the maximum sinking point of the abscissa is zero; L - half the length of the mobile basin, that is, the maximum settlement point to the basin boundary point distance; a, b- depends on the specific geological conditions of the parameters. The coordinate system shown in Figure 1.