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87年5月我院为宁夏农垦局炭窑山露天煤矿进行了一次峒室大爆破,这一次大爆破是很成功的,爆破效果达到了设计要求; 炭窑山露天矿位于宁夏与内蒙古阿左旗相邻的二道岭井田西部贺兰山中段。该露天矿床的赋存特点是矿层直接出露地表,厚度大,埋藏浅,剥采比小,呈倾斜、缓倾斜的单斜或盆状构造,覆盖土岩多为高低不一的山岭或小丘。 该矿是七十年代初建立起来的小型露天矿,现年产十余万吨优质无烟煤,是冶金和化工的重要原料,并远销欧美等十几个国
In May 1987, our hospital conducted a large blasting for the coal-fired open pit coal mine in Ningxia Bureau of Land Reclamation Bureau. This time, the large blasting was very successful and the blasting effect met the design requirements. The charcoal open pit mine is located in Ningxia and Inner Mongolia. The middle of Helan Mountain, west of Erdingling Minefield adjacent to the flag. The characteristics of the open-pit deposit are that the ore layer is directly exposed to the surface of the earth and has a large thickness, a shallow burial depth, a small ratio of stripping and extraction, a sloping and gently inclined monoclinic or basin-shaped structure, covering mostly mountainous or small mound. The mine is a small open-pit mine built in the early seventies, now annual output of more than ten million tons of high-quality anthracite, metallurgy and chemical industry is an important raw material and exported to Europe and the United States more than a dozen countries