Z12519综放工作面来压步距及支架支护强度的分析

Analysis of roof weighting step and frame support strength in Z12519 fully mechanized caving face

为合理确定Z12519工作面的直接支护强度,采用理论分析的方法首先确定顶板岩层的结构模型,计算得到顶板运动的相关参数,采用断裂力学理论计算得到直接顶垮落、基本顶来压和正常回采期间的压力。最后根据顶板压力和支架支护强度支架的关系,确定了不同开采过程中的支架支护强度。

In order to determine direct support strength of Z12519 working face, theoretical analysis method was used to determine structural model of roof strata firstly and relevant parameters of roof movement were got theough calculation. Then, fracture mechanics theory was used to calculate direct caving, basic roof pressure, and pressure during normal extraction. Finally, frame support strengths in different recovery processes were determined according to relation of roof pressure and support strength bracket.