Open AccessResearch on Roof Management Technology of Mining in Shallow Buried Coal Seam use Continuous Miner
Author(s) -
Tao Du
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/508/1/012043
Subject(s) - roof , coal mining , mining engineering , longwall mining , pillar , reservation , subsidence , coal , cave , engineering , civil engineering , geology , computer science , waste management , structural engineering , computer network , paleontology , archaeology , structural basin , history
For the difficulty in managing the roof of mining under the shallow buried coal seams by continuous miner, the technical principles and effects of roof management technologies such as coal pillar support, artificial forced roofing and mining with backfilling were systematically analyzed. This paper has studied the advantages and disadvantages of different roof management methods. The results show that the reasonable reservation of coal pillars can effectively manage the roof, but the mining face has a low recovery rate; effective manual forced roofing can reasonably control the roof cave and increase the mining face recovery rate; mining with backfilling can effectively prevent the large area of the roof from caving, significantly increase the recovery rate of the working face, and can reduce or even avoid surface subsidence.