【作者】 宋卫华；

【导师】 张宏伟；

【作者基本信息】 辽宁工程技术大学 ， 采矿工程， 2005， 硕士

【摘要】 煤与瓦斯突出是煤矿中一种极其复杂的动力现象,是威胁煤矿安全生产的严重自然灾害之一。区域预测是以煤与瓦斯突出机理的认识为基础的,由于突出的复杂性,目前存在不同的侧重点和观点。目前国内外普遍接受的是煤与瓦斯突出是地应力、瓦斯、煤的物理力学性质等因素综合作用的结果。国内外开采实践表明,煤与瓦斯突出的发生呈区域性分布,瓦斯灾害发生区域只占整个开采区域的 8%～20%。文中通过地质动力区划方法确定区域地质构造背景,通过井下地应力测量和数值模拟方法确定岩体应力状态,分析确定井田范围内瓦斯压力、瓦斯含量和分布规律与其它重要因素的相互影响,采用多因素概率预测方法完成煤与瓦斯突出危险性的区域预测。进而划分出煤与瓦斯突出危险区、突出威胁区和无突出危险区,对煤与瓦斯突出危险性做出评估和预测,提高瓦斯灾害预测的准确性。更多还原

【Abstract】 Coal and gas outburst,which threatens coal mine safety production,is a kind ofcomplicated dynamical phenomena in minings and one of the most serious naturaldisasters.Regional predictionis based on the cognition of mechanism of coal and gas outburst.On account of complexity of outburst,different viewpoints are in concurrence.At present,it is widely accepted in the world that Coal and gas outburst is the synthesized result of stress,gas, coal physics mechanics etc. It is indicated by domestic and overseas mining practice thatcoal and gas outburst is regional distribution and the disaster occurrence area accounts foronly 8%～20% of whole mine district. In this paper, geo-dynamic zoning method was used toascertain regional geology structure, geo-stress survey and numerical simulation were used tomake sure rock mass stress state, the influence between gas stress and content and othersfactors affecting coal and gas outburst was analyzed. Based on which, multi-factor probabilityprediction method was applied to predict regional coal and gas outburst danger. The miningarea was then divided into coal and gas outburst dangerous area、threat area and safety area.By assessing and predicting the danger of coal and gas outburst, the accuracy of gas of coaland gas outburst predict was improved.更多还原