CAJ | 학술논문

论述了π型顶梁具有结构简单可靠、重量轻、支护强度大、安全性好的特点，适应中厚煤层，放顶效果好、资源回收率高，2002年在杨井24125工作面经过6个月的井下使用，共生产原煤15万t，最高月产3万t，最高日产1200t。采用铰接顶梁提高效率42％，工作面回采率达到96％，回采工效提高了50％，取得了显著的技术经济效益。
논술료π형정량구유결구간단가고、중량경、지호강도대、안전성호적특점，괄응중후매층，방정효과호、자원회수솔고，2002년재양정24125공작면경과6개월적정하사용，공생산원매15만t，최고월산3만t，최고일산1200t。채용교접정량제고효솔42％，공작면회채솔체도96％，회채공효제고료50％，취득료현저적기술경제효익。
The π-top beam has a simple structure and reliable, light weight, and the intensity of support and good characteristics of security, can reduce the labor intensity of workers to adapt to the thick coal seam, caving good resource re-coveries, 2002 in Young wells 24125 Face After six months underground use, a total production of 150,000 tons of raw coal, the highest monthly production capacity of 30,000 tons, the highest Nissan 1200t, hinged roof beams were used by 42%, and the mining face rate reached 96%, The recovery work efficiency increased by 50%, has made significant technical and economic benefits.