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1984年法国颗粒材料的年产量近三亿五千万吨,占矿产工业总吨量的三分之二,占矿产工业总产值的四分之一还多。这些颗粒材料有三分之一用于建筑,有三分之二用于公共工程,也就是说,作混凝土用的材料占49％,作筑路用的石料占51％。法国颗粒材料的消耗量曾达到每人每年七吨,目前为每人每年六吨。 1982年,法国的颗粒材料有62％来源于砂砾石,38％来源于由块石轧碎后的碎石。块石中,17％为碳酸盐岩,21％为火山岩和变质岩。目前,法国共有采石场约一万二千五百个(其中,砂砾石采石场有六千个),年开采面
In 1984 France’s annual production of granular materials was nearly 350 million tons, accounting for two-thirds of the total tonnage of the mineral industry, accounting for more than a quarter of the total output value of the mineral industry. One third of these particulate materials are used in construction and two thirds are used for public works, ie 49% for concrete and 51% for road construction. The French particulate material consumption has reached seven tons per person per annum and is currently six tons per person per year. In 1982, 62% of France’s particulate material was derived from gravel and 38% from gravel crushed by rock chips. Of the boulders, 17% are carbonate and 21% are volcanic and metamorphic. At present, there are about 12,500 quarries in France (of which 6,000 are gravel quarries) and the annual mining face