摘要
为解决在硬度低且干燥煤体中炮掘或风镐掘进煤巷时可能发生溜煤冒顶、粉尘浓度超标、瓦斯浓度超限等灾害,采用煤层注水的方法,并分析顶煤所处的力学环境模型,推导冒顶发生时需要的条件,提出注水防冒的一种新理论方法,称为"楔子理论"。采用数值模拟试验方法更进一步解释顶煤处于双向受压应力状态,为更进一步验证"楔子理论",结合佳峰煤矿现场实验,分析、归纳煤层注水的方法及实践过程中所需的步骤、注意事项,实验结果表明了煤层注水方法在安全、经济等方面的优越性。
To solve the problems such as coal roof caving, excessive dust concentration and the concentration of gas overrun disasters,that will be happen by tunneling of the coal roadways in low hardness and dry coal, using the method of injection water into coal seam, and analysis the mechanics environment model, top roof occurs is derived conditions, puts forward a new kind of injection water in top coal to prevent the coal roadway caving method, referred to as a 'wedge theory'. Numerical simulation experiment method is further explained top-coal in bidirectional compressive stress state, for further verification 'wedge theory', combined with jia feng colliery for field experiments, analysis and induction of coal seam water injection method and the steps and matters needing attention in the process of practice, in the end, the experimental results show that injection water in top coal method in the advantages of safety, economy, etc.
出处
《煤炭技术》
北大核心
2014年第6期105-107,共3页
Coal Technology
基金
国家"十二五"科技支撑计划项目(2012BAB13B04)
关键词
煤层注水
双向受压
楔子理论
数值模拟分析
injection water into coal seam
biaxial compression
wedge theory
numerical simulation analysis
