CAJ | 학술논문

潘一东矿使用层间距较远的11－2煤层作为13－1煤层的下保护层进行区域防突，为确保保护效果达标需要对其进行深入考察。本文从区域边界瓦斯压力、煤层膨胀变形量、透气性系数等方面考察保护效果，确定其保护范围。同时分析了开采保护层对被保护层进行卸压瓦斯预抽对保护边界范围的影响。结果表明，开采保护层使保护区域内瓦斯压力下降明显，结合卸压抽采可以使被保护煤层的卸压范围得到扩大，卸压区内煤体最大膨胀率为19??13％，煤层透气性系数可增大到原来的277??6倍。
반일동광사용층간거교원적11－2매층작위13－1매층적하보호층진행구역방돌，위학보보호효과체표수요대기진행심입고찰。본문종구역변계와사압력、매층팽창변형량、투기성계수등방면고찰보호효과，학정기보호범위。동시분석료개채보호층대피보호층진행사압와사예추대보호변계범위적영향。결과표명，개채보호층사보호구역내와사압력하강명현，결합사압추채가이사피보호매층적사압범위득도확대，사압구내매체최대팽창솔위19??13％，매층투기성계수가증대도원래적277??6배。
It was necessary that the protection effect should be deeply investigated to ensure the protection effect reaching the standard in the process of regional gas outburst prevention that 1 1-2 coal seam was regarded as the farGdistance lower protective layer of 13-1 coal seam in the Panyi Dong Coal Mine?? The protection effect was investigated from the regional boundary gas pressure and swelling deformation rate and gas permeability coefficient and the protection range was determined,and then the influence of destressed gas extraction in the protected layer under mining the protective layer on the protection of the boundary range was analyzed?? The results show that exploring the protective layer make the gas pressure decreasing significantly in the proG tective region and the destressed range of protected layer expanding combination of destressed gas extraction,the maximum swelling deformation rate of coal seam reached 1 9??13% and the gas permeability coefficient increased to 277??6 times as the original in the destressed region.