顶板来压预报的数学模型及效果

MATH MODEL FOR ROOF WEIGHTING PREDICTION AND ITS EFFECTIVENESS

本文应用模糊数学方法统一识别来压前兆模糊信息(超前巷道和工作面顶底板移近速度),探讨了来压前兆的基本特征量及隶属函数,找出了各种条件下来压前兆的共同异常特征,使来压预报可按统一模式进行。文章表明,移近加速度是来压前兆的基本特征量,由其构成的戒下型隶属函数将前兆异常分辨得十分清楚。研究结果为确定性预报、计算机预报提供了有效的前兆分析数学模型。

This paper discusses the basic eigenvalues and the membership function on the basis of identification of fuzzy information including the roof convergence speed at the advance roads and working faces before roof weighting using the fuzzy math mathod.And the different common abnormal characters are established, therefore the roof weighting forecasting can be done with the help of the mathematical model of the roof study weighting prediction analysis. It can be seen from that the roof convergence acceleration is the basic eigenvalue which indicates the commiog roof weighting,and the subordinate basic function formed by the basic eigenvalue can clearly identify the abnormul phenomena of the before roof weighting. So, the study results provide the mathematical model of the effective indication analysis for the deterministic roof weihting forecasting and the computer forecatig.