论文部分内容阅读
本文提出了一种由凿岩机主体、活塞、钎杆和钎头等组成的凿岩模型，该模型以活塞、钎杆和钎头的一次元应力波理论为基础，并假定了钎头与岩石间相互作用的力和凿透能力与滞后的关系，开发出了这种模型的计算机程序，能够模拟连续的凿岩过程。即不只限于一次冲击。用重型导轨式凿岩机的模拟来检验所提出的模型，提出并讨论了活塞位移、作用于活塞的力、钎杆中的应力波及作用于岩石的力等的计算结果。可以说，这些计算结果是合理的，所建立的模型能够用于凿岩机的研究和开发。不过，还有两点未解决的问题需要讨论：（１）钎头和岩石的相互作用；（２）活塞、钎杆和钎头中应力波的衰减。
In this paper, a rock drilling model consisting of rock drill body, piston, drill rod and drill bit is proposed. The model is based on the one-dimensional stress wave theory of piston, drill rod and drill bit. It is assumed that the drill bit and the rock The force of the force and the relationship between the penetration ability and the lag, a computer program of this model has been developed to simulate a continuous rock drilling process. That is not limited to an impact. The proposed model was tested by the simulation of a heavy rail driller, and the calculation results of the piston displacement, the force acting on the piston, the stress wave in the drill rod and the force acting on the rock were proposed and discussed. It can be said that these calculations are reasonable and the established model can be used for the research and development of rock drills. However, there are two other unresolved issues that need to be discussed: (1) the interaction of the bit with the rock; and (2) the attenuation of stress waves in the piston, rod and bit.