开采上保护层效果检验技术研究  

Study on Test of Upper Protective Layer's Effect

作　　者：张志勇[1] 徐传田[1] 

机构地区：[1]淮北矿业股份公司海孜煤矿,安徽淮北235000

出　　处：《淮南职业技术学院学报》2011年第3期1-3,共3页Journal of Huainan Vocational Technical College

摘　　要：煤与瓦斯突出严重影响了矿井安全生产,开采保护层是最有效、最经济的防治措施;通过对海孜矿上保护层开采效果研究,结果表明:开采前后瓦斯压力及含量降低明显,卸压区内瓦斯抽采率可达33.2%;卸压区内煤层透气性系数比未卸压区的增大三倍;相似模拟实验表明9煤的膨胀率为8.1‰,综合分析确定开采上保护层后对9煤起到了明显的卸压保护作用,研究结果为相似条件下保护层开采提供了参考。Coal and gas outburst seriously impact on mine safety and production.Mining upper protective layer is the most effective and economic preventive measure.This paper studies the effect of Haizi Mine＇s upper protective layer,and the result indicates that pressure and content of gas reduce significantly,gas extraction rate can reach 33.2% and the gas seepage coefficients in the discharging pressure area coal seam increase three times than those in common coal seam.Simulation experiment shows that the 9 coal seam＇s expansion rate is 8.1 ‰.Through comprehensive analysis,mining upper protective layer protect the 9 coal seam significantly.The result of this paper provides reference for similar coal mines.

关 键 词：上保护层 保护效果检验 模拟实验 

分 类 号：TD713[矿业工程—矿井通风与安全]