基于弹性基础梁计算弹性区支承压力曲线

Calculation of Support Pressure Curve in Elastic Region Based on Elastic Foundation Beam

将采煤工作面上方各关键层上覆软岩介质当做弹性介质,视关键层为被上、下松软岩层夹支的平面应变半无限长梁。根据弹性地基假定,推导各关键层受采动影响对煤体产生的扰动压力(支承压力)的计算公式,建立关键层断裂前、后力学模型,求出各项参数,从而计算得出工作面前方弹性区支承压力曲线。

Regarding the soft rock medium on the key layers above the coal mining face as an elastic medium, treating the key layer as the plane strain semi-infinite beam which is supported by the upper and lower layer of soft rock. According to the elastic foundation assumption, derived the calculation formula of the disturbance pressure（supporting pressure） of the coal body caused by the mining of various critical layers, established the mechanical models of key layers before and after it ruptures ,figured out the parameters, at last calculated the support pressure curve of whole elastic area.