摘要
为准确预测矿井深部煤层瓦斯含量,分析了煤层埋藏深度、基岩厚度和地温对煤层孔隙率和瓦斯含量的影响,得到了影响瓦斯含量的主控因素。研究结果表明:瓦斯含量随基岩深度的增加逐渐增高,每百米增加3.73m3/t.r,瓦斯含量随温度的升高逐渐降低,温度每升高1℃,煤样吸附瓦斯量就减少0.29m3/t.r。
In order to accurately predict gas content in deep seam coal mining,the influence of the coal seam depth,bedrock thickness,temperature of stratum and gas content have been analyzed in this study.The main factors influencing gas content were obtained.The results showed that with an increase in bedrock depth the gas content increases gradually.Results from the study showed that gas concentrations increased by approximately 3.73 m3/t·r for every hundred metres of depth however,gas content reduced gradually with the increase of temperature.A temperature rise of 1℃ resulted of a reduction of 0.29 m3/t·r in coal gas samples.
出处
《中国煤炭》
北大核心
2013年第7期93-96,共4页
China Coal
基金
国家自然科学基金(51174081
E041003)
河南省科技攻关资助项目(132300410119)
关键词
瓦斯含量
埋藏深度
基岩厚度
地温
深部煤层
预测
gas content
buried depth
bedrock thickness
temperature of stratum
coal seam in deep mining
prediction
