摘要
为解决突出矿井煤与瓦斯突出灾害和地应力两大灾害相互叠加、诱导突出,造成工作面煤体较大面积垮落,随之瓦斯浓度超限技术难题,平煤股份十矿在工作面上隅角及高位巷进行了瓦斯抽放,利用声发射、无线电坑透和矿山CT等技术,采取深孔松动爆破等措施进行消突治理,确定了钻孔主要技术参数、钻孔布置方式。采用深孔松动爆破措施后,己15-24080工作面回风流瓦斯浓度由松动爆破前的0.65%下降到松动爆破后的0.41%。
To solve such technical problems as largearea coal caving and gas overrun at working face caused by double disasterscoal and gas outburst and high geostress,the gas was drained in the upper corner of the working face and in the highlevel roadway in No. 10 Mine of Pingdingshan Tianan Coal Group Co.,Ltd.. Using acoustic emission,radio mine locator and mining CT,the loosening blasting in deep holes was carried out to eliminate outburst,and the main technical parameters of boreholes and their location. After loosening blasting,the gas concentration in return air of F15-24080 working face was decreased from 0.65% to 0.41%.
出处
《中国煤炭》
北大核心
2014年第7期119-121,共3页
China Coal
关键词
突出煤层
应力集中
深孔松动爆破
技术参数
钻孔布置
outburst coal seam
stress concentration
deephole loosening blasting
technical parameters
borehole location