顾桥矿突出预测敏感指标敏感性分析

煤与瓦斯突出是一种极为复杂的动力现象,不同类型的突出具有不同的预测敏感指标及临界值,不同的煤层或者同一突出煤层的不同水平,也完全可能具有不同的预测敏感指标及临界值。分析了顾桥矿现用各项敏感指标钻屑量S、瓦斯解吸指标K1值和瓦斯涌出初速度q的本质、反应机理及影响因素,通过收集、整理、分析顾桥煤矿现用预测预报敏感指标,得出各项预测指标与矿井埋藏深度、煤层赋存、地质构造等的关系,分析各项预测指标超标原因,得到适合该矿的突出预测敏感指标,从而提高煤与瓦斯突出预测的可靠性,进而提高煤巷掘进速度。

Sensibility Analysis of Outburst Prediction Sensitive Indexes in Guqiao Coal Mine

Coal and gas outburst is a complicated dynamics phenomenon.The different prediction indexes and critical values are adaptable to different outburst.In different coal seams or different levels of the same coal seam,the indexes are different.At this paper,the essential,mechanism and effect factors of prediction indexes including drilling cuttings S,the gas adsorption index K1 and the initial velocity q of gas emission are analyzed.Through collecting and analyzing the prediction indexes of Guqiao Coal Mine,the relationship of indexes and factors including depth,preservative laws and geological structures are received.The overproof reasons of various indexes are analyzed,and outburst prediction sensitive indicators adapted to Guqiao Coal Mine are concluded.Then the reliability of prediction is enhanced and the driving speed is enhanced too.