基于可拓原理的掘进工作面瓦斯超限预测研究

Study on Prediction of Gas Over-limit of Excavation Work Surface Based on Expandable Method

针对掘进工作面瓦斯超限难以预测的问题,在分析瓦斯超限影响因素的基础上,采用灰色关联分析方法筛选出了掘进工作面瓦斯超限预测主要指标;应用物元可拓集合理论建立了掘进工作面瓦斯超限危险性预测的物元可拓模型,提出了掘进工作面瓦斯超限危险性预测可拓方法,划分了瓦斯超限危险性等级。通过将该方法对2个掘进工作面的瓦斯超限危险性进行预测,对掘进工作面瓦斯超限危险性预测可拓方法的可行性进行了验证。结果表明:该方法能够准确预测掘进工作面瓦斯超限危险性,具有计算简单、预测准确率高、不受主观因素影响等特点,为掘进工作面瓦斯超限预测提供了新的技术方向。

It is difficult to predict the gas transfinite in tunneling face.Based on comprehendsive analysis of gas transfinite factors,the main index of gas transfinite prediction is selected by gray correlation analysis method.According to matter element and extension set theory,an extension elements model on prediction of gas transfinite in tunneling face was built,and an extension method for the prediction was brought forward.The risk level of gas transfinite is classified.The method was applied in the risk assessment of gas transfinite for 2 tunneling faces from.And the feasibility of the extension method of gas transfinite risk prediction in tunneling face was verified.This method can accurately predict the risk of gas transfinite of the tunneling surface,which has the characteristics of simple calculation,high prediction accuracy and not influenced by subjective factors.It provides a new technical direction for the prediction of gas transfinite of the tunneling surface.