| In the process of executing the strategy of controlling resource and enforcing the basic position and accelerating the construction, the east F17 mine of the 2nd mining area' s 2* ore body of the Jinchuan company is the 1st mine that has been found and constructed. With the group' s strategy establishment and the development target enhancing, the Jinchuan Group' s demand for the east F17 mine' s construction project is stricter than before. Its management plan has established the total demand for the east F17 mine in 2002. Namely the east F17 mine should be founded and used by the end of 2004. And it should have comparative productivity in 2005. It means that the east F17 mine has been constructed and used for one year when the original plan is completed.l.This article optimizes the original development system design. The 1150m level that is used to carry material and walk is working as main gangway. And in it two concentration bing hole (100m) has been constructed to avoid work in mine stope and using high-level bing hole(130m). There are short in-seam bing hole, short rockhole and rock downcast in mine stope. The 1050m main gangway' s construction program was divided into earlier stage and later stage. So the mine is used and drawn in advanced. The installation of air supply and water supply system has been implemented in the drilling from the ground instead of in the 46th auxiliary shaft. Thus it solved many power haulage questions in down.2.This article optimizes the original solid workings system design. The hanger solid workings system design is mended to the basal part solid workings system design. So it reduced advance overburden(6613m3) and capital outlay($6820 thousand). The arrangement way adopts drift and cross-cut in the main gangway. The drift adopts single way and car pass instead of double way. So it reduced advance overburden and capital time. 3. By analyzing the process how did the hexagonal form according to the down the dip, hexagonal, high access road, mechanized and consolidated fill mining method, the access road section size in cuts has been enhancedand the over-all mining method has been changed into mining method at one access road interval. So it increased extraction ratio and accelerated rock-transformation in mine stope. And it increased the mine' s productivity and paved the way for the mine' s advanced production.4. This article optimizes the original mine stope construction design. The amount of airshafts have been reduced. At the same time the fill pass also works as return-air raise. Hence, it improved ventilation condition and work efficiency and productivity. The cuts and the access road entrance touch the top in the junction . So it avoided the hidden danger in next mine stope and minimized the driving difficulty. And the driving of mining can go on well.5. This article analyses the ore body' s habitat, the surrounding strate' s nature, the ores' rigidity and stability carefully. This article optimizes the original mine stope access road mining method on the basis of safe working. Thus it minimized the influence on the mine stope access road mining when the solid workings is working and accelerated the mine stope' s accomplishment and solved the question of the mine stope' s balanced decline in the panel. At the same time it improved the mine' s productivity. And the mine drawn in advanced.This mine' s original capital time is 5 years. It was designed to be used by the end of 2005. The original design was optimized and the mine was used on 1, April, 2004. Moreover, the production is 200 thousand tons in 2004. The amount of Ni and Cu are respective 1820 tons and 1020 tons. It paved the way for the mine' s designed productivity' s 80% in 2005(namely total amount is 528 thousand tons). |
PDF Full Text Request