顶板周期来压对邻近层抽采瓦斯效果影响分析  

Analysis on the effect of gas drainage in adjacent seams during periodic weighting

作　　者：王海东[1,2] 张兴华[1,2] 张宇[3] 

机构地区：[1]煤炭科学研究总院沈阳研究院,辽宁省抚顺市113001 [2]煤矿安全国家重点实验室,辽宁省抚顺市113001 [3]辽宁工程技术大学,辽宁省阜新市123000

出　　处：《中国煤炭》2013年第9期98-101,共4页China Coal

摘　　要：为提高回采工作邻近层抽采瓦斯效果,减少回采过程中瓦斯涌出量,提出了采用倾向平行高位钻孔进行邻近层抽采瓦斯工艺。结合山西马军峪煤矿工程实践,对顶板周期来压期间邻近层钻孔抽采瓦斯量变化规律进行研究,得出顶板来压期间钻孔抽采瓦斯量及有效的抽采瓦斯时间明显增加,且抽采瓦斯量与抽采时间呈周期性波动,与顶板周期来压步距有较好相关性,提出了钻孔布置参数应考虑来压步距的影响。To improve gas drainage effect in adjacent seams and reduce gas emission in actual mining,gas drainage parameters design by using inclined parallel with high position drilling have been proposed.Based on Majunyu Coal Mine situation,the change regulation of gas drainage amount in adjacent seams during roof periodic weighting has been studied.The results showed that the amount of gas drainage have been significantly increased.The effective gas drainage time has been enhanced as well.The relationship between gas drainage amount and time showed cyclical fluctuations and had correlation with weighting length.This paper proposed that borehole parameters should consider the effect of weighting length.

关 键 词：邻近层 瓦斯抽采 周期来压 来压步距 裂隙带 

分 类 号：TD712.6[矿业工程—矿井通风与安全]