A new method for determining the motion elements of mine electric locomotive haulage
Abstract
In the existing calculation methods of mine electric locomotive haulage for determining the elements of motion-traction force, speed and time of motion, energy consumption—an average or equivalent slope of the haulage tracks is usually adopted. An equivalent slope is a constant slope that is equivalent to the actual profile in terms of the operation of traction motors. For newly designed coal and ore mines, a slope of equal resistance or close to it is often adopted in calculations of mine electric locomotive traction, ensuring normal drainage of water from the workings. A slope of equal resistance is understood to be a constant slope at which the traction force of the electric locomotive when moving with a load downhill and the traction force when moving with an empty train uphill will be the same. The calculations imply that the operation of electric locomotives at a steady speed of motion occurs without acceleration, with a traction force and, accordingly, with a current value corresponding to the uniform movement of the train on the adopted constant slope.
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References
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- A. V. Rysyev, A technical and economic method for determining the parameters of underground electric locomotive haulage, Zapiski Gornogo Instituta , 1950, v. XXIV. (in Russian)