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一、陡帮开采的基本原理为了保证露天矿的正常工作,工作平台必须保持一定的宽度,小于此值,台阶的正常作业就会受到破坏,该值称最小工作平台宽度。国内外露天矿的最小工作平台宽度都差不多,约为40～50米,但工作帮坡角相差很大,我国和苏联过去都实行缓帮开采,工作帮坡角8°～15°。而美欧等西方国家多实行陡帮开采,工作帮坡角在25°～35°之间,有时还更大。为什么工作平台宽度差不多,而工作帮坡角却相差如此之大呢?这就必须从陡帮开采的基本原理谈起。缓帮开采时,工作帮上每个工作台阶都布置一台或多台电铲,所有的工作台阶都处于作业状态,它们齐头并进,全面开采,故
First, the basic principles of steep mining In order to ensure the normal operation of open-pit mine, the working platform must maintain a certain width, less than this value, the normal operation of the stage will be destroyed, the value of the minimum working platform width. The minimum working platforms for both domestic and foreign open pit mines are about the same, about 40 to 50 meters wide. However, the work slope angle varies widely. In the past, both China and the Soviet Union implemented slow-release mining to help the slope angles of 8 ° to 15 °. The United States and Europe and other Western countries to implement more steep mining, working slope angle between 25 ° ~ 35 °, and sometimes even larger. Why is working platform width about the same, but work slope angle difference is so great? This must be from steep to help mining basic principles talked about. When we help the mining, the work helps to arrange one or more shovels for each working step. All the working steps are in working condition. They go hand in hand and are fully mined. Therefore,