硬岩表面采矿技术的新发展

硬岩表面采矿技术的新发展(中文7000字,英文4000字)
2.1矿山设备新开发
轮胎技术的突破推动了大型卡车的发展，但正如约翰•查德威克(John Chadwick)所指出的，从整体上看，这些机器需要更大的动力和更高的生产率。
一九九八年，各供应商继续合并。特雷克斯将O&K添加到单元钻机中形成特雷克斯矿业，小松矿业系统(KMS)收购了Demag，日立(Hitachi)收购了欧几里德(Euclid)，随着沃尔沃(Volvo)的离开，P&H Mine Pro在其投资组合中增加了更多产品。
削减采矿成本的压力迫使许多生产商将整体运营规模最大化，并使用最新、最大、可用和适用的挖掘装载和运输设备。然而，过去一年左右疲弱的矿业产品市场通过压低可用于新设备的投资资本，缓解了这一局面。尽管如此，制造商们仍在继续开发更好、更大的机器，例如，去年3001卡车运力障碍就被彻底打破了。
生产商继续在矿场上发挥越来越大的作用，除了提供备件外，还提供各种服务。他们现在主动承担维修任务，从最广泛的维修工作到完全取代一个矿场自己的维修工程师队，不一而足。这样的合同让这家矿业公司专注于自己的核心业务;的挖掘。
 New Developments of Hard-rock Surface Mining Techniques
2.1 New Development of Mine Equipment
Bigger continued to be better, with a breakthrough in tyre technology boosting big trucks, but throughout, as John Chadwick notes, the machines required more power and more productivity.
Consolidation among the suppliers continued in 1998. Terex added O&K to Unit Rig to form Terex Mining, Komatsu Mining Systems (KMS) purchased Demag, Hitachi took a firmer grip on Euclid, as Volvo departed, and P&H Mine Pro added more products to its portfolio.
The pressure to cut mining costs has driven many producers to maximise the overall scale of operations and to use the latest and largest available and applicable excavating loading   and haulage equipment. However, the weak mining product markets of the past year or so have mitigated against this by driving down the investment capital available for new    equipment. Nevertheless, manufacturers continue to develop better and bigger machines with, for example, the 3001 truck capacity barrier well and truly broken last year.