The Foundational Research On Water Infusion For Longwall Top Coal Caving Face In Para-Anthracite Seam

Water infusion is widely used for guard against mine disaster such as gas blasting,gas and coal outburst,coal dust blast . but because Chinese coal embedding condition is multiform, this method do not always receive ideal effect , commonly speaking, it is very difficult to reach a ideal result to infusing water in para-anthracite coal seam.The thesis take JinCheng BoFang No.3 coal seam for example , first determining the basic physics and mechanics property and reflectance of virinite , maceral, industrial analyse, element analyse, surface wetting property,pore size distributing, crack property. First ,Above this datum ,using fractal theory analyzing and drawing the conclusion that the poor effecting of water infusion is poor wetting property and middle porosity rate with too much weeny hole, for the hole that its radius bigger than 10000A|° only account for 14.5% and the hole that its radius less than 50A|° account for 36.17% . such a pore size...