摘要
针对淮北矿区朱仙庄煤矿极软易燃特厚煤层的特殊地质条件,对工作面设备进行了合理的配置。通过顶煤控制和对煤壁浅孔注水实现对煤壁的端面控制。通过实验室模拟和现场工艺试验,确定了"两采一放"、多轮顺序放煤的开采工艺;运用埋管灌浆、工作面上下隅角注凝胶及综合防火措施等有效地防治了回采期间采空区自燃;并通过有效的现场管理,使得极软易燃特厚煤层条件下综放开采在朱仙庄煤矿8个工作面成功应用,采出率达87%以上。
According to the special geological conditions of the ultra soft,combustible and special thick seam in Zhuxianzhuang Mine of Huaibei mining area,a rational allocation was conducted for the coal mining face equipment.The tip to face control of coal wall was realized by the top coal control and water injections to the shallow borehole of the coal mining wall.With the lab simulation and the mine site technique experiment,the top coal caving technique with the ＂two coal mining passing and one top coal caving operation＂ and the multi sequence top coal caving was set up.The coal spontaneous combustion in the goaf during the face mining period could be effectively prevented and controlled with the buried tube grouting,the gel grouting at the top and bottom corners of the coal mining face,and other comprehensive fire prevention and control measures.With the effective mine site management,the fully mechanized top coal caving mining under the ultra soft,combustible and special thick seam was successfully applied to 8 coal mining faces in Zhuxianzhuang Mine with a coal mining rate over 87%.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2010年第11期1873-1877,共5页
Journal of China Coal Society
关键词
极软易燃特厚煤层
综放开采
端面控制
防灭火技术
ultra soft
combustible and special thick seam
fully mechanized top coal caving mining
tip to face control
mine fire prevention and control technology
