煤矿安全2017，Vol.48Issue(4)：63-66,70,5.DOI:10.13347/j.cnki.mkaq.2017.04.017
下保护层开采卸压瓦斯分布预测及抽采技术
Prediction of Pressure Relief Gas Distribution and Extraction Technology for Lower Protective Seam Mining
摘要
Abstract
In order to ensure the gas outburst elimination and the gas control management of the protected seam,the effect of the pressure-relief in protecting coal seams is grasped,main regional distribution of pressure-relief gas is predicted;we got the effect of pressure relief,gas migration and distribution law of protected layer after the protection layer mining by using UDEC numerical simulation software of discrete elements;pressure relief gas is extracted by the method of drilling along gob-side entry retaining on the basis of the simulation results to achieve no pillar mining and eliminate the danger of coal and gas outburst in the stress concentration area of outburst coal seam.The test results show that gas pressure was reduced by 1.36 MPa,gas content reduced by 9.51 MPa and good extraction results are obtained.关键词
UDEC离散元/保护层开采/留巷钻孔法/瓦斯压力/瓦斯含量Key words
UDEC discrete element/protection layer mining/method of drilling along gob-side entry retaining/gas pressure/gas content分类
矿业与冶金引用本文复制引用
郭靖,索若淇..下保护层开采卸压瓦斯分布预测及抽采技术[J].煤矿安全,2017,48(4):63-66,70,5.基金项目
吕梁学院校级青年基金资助项目(ZRQN201505) （ZRQN201505）
