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1·There are many complications that influent open-pit limit and the economic stripping ratio is the most important one.

影响露天矿开采境界的因素很多，其中一个最重要的因素就是经济合理剥采比。

2·So, using the internal dumping could decrease the waste volume or increase the production, reduce the stripping ratio, and improve the economic benefit.

从而可以减少剥离量或增加采出矿石量，降低剥采比，提高矿山经济效益。

3·The feasibility of adopting steep slope mining at main quarry is discussed against stripping ratio is high in flood peak period, and the preliminary scheme is put forward.

针对主矿采场正值剥离洪峰期剥采比较高的问题，对主矿采场实施陡帮开采的可行性进行论述，并且对陡帮开采方案提出初步设想。

4·The basic principles and applied conditions of three comparing methods calculating economic stripping ratio are expounded and a series of formulas corresPOnd with the ones are presented in the paper.

阐述了计算经济剥采比三种比效法的基本原理和适用条件。并提出了一套相应的计算公式。

5·The inventive stripping mechanism can effectively use the stripping force via a rolling and stripping manner, so as to increase the stripping success ratio without damaging work pieces.

本发明借由滚压剥膜的方式，有效的运用剥膜力量，而可增加剥膜的成功率，且亦不会损坏工件。