煤与瓦斯突出强度与冲击波超压关系研究  

Study on the relations between shockwave overpressure and outburst intensity

作　　者：冯彬 周爱桃[2,3] 徐新华 任运强[2] 

机构地区：[1]同煤同发东周窑煤业有限公司,山西大同037000 [2]中国矿业大学(北京)资源与安全工程学院,北京100083 [3]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《矿业工程研究》2011年第2期22-26,共5页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(50874111);国家高技术研究发展计划(863计划)重点资助项目(2009AA063201);教育部新世纪优秀人才支持计划资助项目(NCET-10-0724);教育部留学回国人员科研启动基金资助项目

摘　　要：煤与瓦斯突出强度是评判突出危险性的一个重要指标,因此对突出强度的准确预测意义重大.应用气体动力学理,对吨煤瓦斯膨胀能进行了理论分析,指出了参与突出的瓦斯量不仅仅是游离态瓦斯含量;通过自行研制的煤与瓦斯突出试验模拟装置,得出了不同瓦斯压力下突出强度;最后应用数值模拟,得出了不同时刻以及巷道不同位置的超压变化规律,并根据理论公式推算出突出强度,经过与试验值比较,说明理论分析、数值模拟的正确性.为煤与瓦斯突出强度研究与冲击波超压之间的关系研究预测提供了新的方法.Outburst intensity is an important index for coal and gas outburst risk evaluation,so it is of great significance to predict the outburst intensity accurately.In this paper,coal and gas release energy is analyzed theoretically using the gas dynamics theory.It is shown that the gas volume in the outburst process not only includes the gas content.Coal outburst intensity under different gas pressure is obtained through self-developed coal and gas outburst device.Finally the overpressure law from the different positions of outburst cavity can be obtained using the numerical simulation.And the outburst intensity can be calculated according to theoretical formula.Finally,this paper concludes that the numerical simulation can provide a more accurate prediction of coal and gas outburst intensity through comparison with experimental values.The paper provides a new approach for studying the relations between coal and gas outburst intensity and shock wave overpressure.

关 键 词：突出强度 超压 初始能量 数值模拟 试验研究 

分 类 号：TD713[矿业工程—矿井通风与安全]