(一)概述 在开采具有自燃发火特点的硫化矿床实践中,一些矿山由于内因火灾,由地下开采改为露天开采,如美国的尤纳依切特贝尔格铜矿,苏联的普良文斯基铜矿等。一些矿山被迫改变地下采矿方法,如苏联的捷克利铅锌矿和我国西林铅锌矿,原采用崩落法和空场法,后改为充填采矿法。 (I) Overview In the practice of mining sulphide ore deposits characterized by spontaneous combustion, some mines have changed from underground mining to open-pit mining due to internal fires. For example, the United States’s Yunayechette Berger copper mine, the Soviet Union’s Pravinskiy copper Mine and so on. Some mines have been forced to change underground mining methods, such as the Czech Republic’s Lead-Zinc Mine in Czech Republic and the Xilin Lead-Zinc Mine in the Soviet Union. They used the caving method and the open-field method and later replaced the mining method.