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钢绳冲击式凿岩,潜孔钴凿岩,冲击凿岩以及与凿岩和破碎相关的过程都可以用微机进行模拟。作者用Apple Pascal语言开发了适合苹果Ⅱ微机上运行的模拟程序。本文论述了模拟程序及其理论基础,并通过两种不同的模拟研究获得了研究结果。首先模拟研究一个由具有相同特征阻抗的圆柱状冲锤和圆柱状钎头组成的简单的冲击系统的效率。当钎头与冲锤的长度比等于1或0时,可获得最大峰值效率。模拟研究结果表明,冲击系统的效率通常表现为钎头与冲锤的初始间隔的波动函数。如果钎头比冲锤长,这一函数是用期性的。其次是模拟研究批量生产的冲击式凿岩机,即模拟研究阿特拉斯·考普科公司生产的COP1038HD型凿岩机。确定了凿岩机的应力、效率、冲锤恢复系数以及作用在岩石上的力。两种模拟研究都用精确的理论结果进行了比较。
Wire rope impact rock drilling, submerged cobalt rock drilling, impact rock drilling, and processes related to rock drilling and crushing can all be simulated using a microcomputer. The author used Apple Pascal language to develop a simulation program suitable for running on the Apple II microcomputer. This paper discusses the simulation program and its theoretical basis, and obtains the research results through two different simulation studies. First, simulate the efficiency of a simple impact system consisting of a cylindrical hammer and a cylindrical drill head with the same characteristic impedance. Maximum peak efficiency is achieved when the length ratio of the tip to the hammer is equal to 1 or 0. Simulation studies have shown that the efficiency of the impact system usually manifests itself as a function of the initial interval between the tip and hammer. If the head is longer than the ram, this function is time-consuming. This is followed by a simulation study of mass production of impact rock drills, that is, a simulation of the Atlas Copco COP1038HD rock drill. The rock drill’s stress, efficiency, hammer recovery coefficient, and forces acting on the rock were determined. Both simulation studies were compared using precise theoretical results.