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西澳大利亚恰那(Channar)铁矿20km长距离胶带运输系统在低滚动阻力方面树立了一些新的标准。运输系统包括一条如图1(本刊略)所表示的、10.3km的曲线半径为9km、弧长达4km的长距离带式输送机和一条10.1km长的直线长距离带式输送机。在生产调试期间进行了广泛的试验,以检验设计方面所关心的许多问题。测出的功率消耗特别低。在直线输送机上记录到的DIN(德国标准)摩擦系数f=0.0098,在水平曲线的输送机上f=0.0110。这些数值向指导现代带式输送机设计准则的现行标准的基本原理提出了挑战。本文提出一个论点,说明从现有的标准改变到以粘弹性和粘塑性理论为基础的能量方程,适用于这种差别对基建投资和经营费用具有显著影响的一些系统。本文还进一步将动态调谐的计算结果以及在进行恰那铁矿设计时所关心的其它论点,与现场测试结果作了比较。
The 20km Long Distance Belt Transportation System at Channar Iron Mine in Western Australia sets new standards in low rolling resistance. The transport system consists of a 10.3 km long belt conveyor with a curve radius of 9 km and an arc length of 4 km and a 10.1 km long linear long belt conveyor, as shown in Figure 1 (published in this paper). A wide range of tests were conducted during production commissioning to examine many of the issues of design concern. The measured power consumption is particularly low. The DIN (German standard) friction coefficient recorded on the linear conveyor f = 0.0098, f = 0.0110 on the horizontal curve conveyor. These values pose a challenge to the basic principles guiding the current standards of modern belt conveyor design guidelines. This paper presents an argument that changes from existing standards to energy equations based on viscoelasticity and viscoplastic theory apply to some systems where such differences have a significant impact on capital investment and operating expenses. This article further compares the results of dynamic tuning with other arguments of concern during the design of the Chana Iron Mine with field test results.