以大型开采机械开拓新露天矿床正在世界范围内快速发展。剥采比的增大,剥离物增加,提出了使用高效开采系统的问题。 目前,在第四纪沉积岩区域,冻结带沉积岩及大范围爆破破坏的沉积岩区域有效使用轮斗挖掘机受到限制。80—120kN/m的单位切割阻力值是目前使用的一般轮斗挖掘机的最高限度。在一些露天矿发达国家比如在独联体和德国提出了开发和设计切割阻力值大约在250kN/m的挖掘 Large-scale mining machinery to explore new open-air deposits are rapidly developing worldwide. Stripping ratio increased stripping increased, put forward the issue of using efficient mining system. Currently, the effective use of bucket wheel excavators is limited in Quaternary sedimentary rock areas, frozen zone sedimentary rocks and large-scale blast-damaged sedimentary rock areas. The unit cutting resistance value of 80-120kN / m is the highest limit of the conventional bucket wheel excavators currently used. In some opencast mine developed countries such as the Commonwealth of Independent States and Germany proposed the development and design of cutting resistance value of about 250kN / m of excavation