矿井技术改造

Technological Transformation In Mines

论述技术改造的技术措施、经济效益和认识。

From 1950 to 1990, Datong Coal Administration Bureau has taken on new looks through rebuilding, innovation, enlargement of old mines and construction of new mines. The following technical measures were taken in the technological transformation:enlargement and adjustment of mine field border; improvement of mine developing deployment; centralized rational production; development of mechanized mining and tunnelling; modification of weak links in production chain in terms of lifting, transporting and ventilation; increasing comprehensive production ability in mines. Among the 15 operating mines,2 are using belt for hoisting, 5 using winding skips, 4 using full belt for transportaion, 5 using belt partly, 3 using three-ton bottom-dumping mine car, and ventilation using high power fans. Very good economic profits have been achieved through technological transformation.Production of raw coal reached 3,494 milliont ons in 1990 and the revenue turning over the state increases in succession In 1990, mechannized mining occupied 63.13％ in the total output. Overall productivity efficiency exceeds 2.00 t/man.