DOI: 10.11799/ce201609002
Intelligent longwall mining technology and equipment and adaptability in super large mining height working face
WANG Guo-fa
PANG Yi-hui
ZHANG Chuan-chang
GU Da-zhao
Abstract：Based on the 6~9m hard and thick coal seam occurrence conditions in Shanxi-Shaanxi-Inner Mongolia large coal base, 6~8m super large mining key technology and equipment was studied. Six control factors of hydraulic support for surrounding rock were analyzed, in which the reasonable setting load and working resistance of hydraulic support shall simultaneously meet the requirements of roof and coal wall control. Large diameter impact resistant pillar, control valves and fluid supply system were developed to guarantee support capacity and advancing velocity of hydraulic support. The three level coordinated coal wall protector was optimized. The weight of hydraulic support was reduced by 15% using the Q890~Q1150 high strength easy-welded structural steel. The large gradient direct transition support method in working face end was studied, which improved the recovery rate of coal resources. The environment and equipment intellisense system based on industrial Ethernet was studied, realizing intelligent linkage and one key start-stop control of mining equipment. The adaptable condition and technical-economic effect of super large height mining technology and equipment were proposed based on technical research and practice.
Keywords：super large height longwall miningthree level coordinating action protection wall deviselightweight designlarge gradient transition supporting wayintellectualized fully mechanized system
Publication Date：2016-01-01
Pages：5( 6-10 )