Justification of the Auto-Conveyor Transport Scheme With Truck Through Passing While Unloading

Abstract

Purpose. Substantiation of efficiency of the combined in-pit automobile-conveyor transport scheme with through passage of dump trucks at their unloading from the point of view of economic, technological and ecological conditions of transition to the new scheme of transport. Methodology. To substantiate the effectiveness of the proposed scheme with through-dump trucks during their unloading, a systematic approach was used, which takes into account the economic, technological and ecological conditions of the transition to the new transport scheme and formulated on their basis provisions for the introduction of new combined mining transport. Findings Four schemes of combined automobile-conveyor transport were compared: with a dead-end front and a dead-end unloading, with a through front and a dead-end unloading, with a dead-end front and a through passage with a through front and a through passage of dump trucks. The most effective under the three conditions of transition to the new transport scheme are schemes with through passage of dump trucks at their unloading. Originality. In addition to the known four types of reloading devices with throughpassage of dump trucks: with a drawbridge, with a transverse drawbridge, with drive beams and a swivel platform, the fifth type of reloading devices was first identifiedwith swivel bridges, swivel axles to support beams (transport tracks) with the possibility of rotation in the vertical plane. This design allows you to abandon the drive, and the rotation of the unloading bridges to conduct due to the force of gravity of the rock mass.Физико-технические проблемы горного производства 2021, вып. 23 201 Practical implications. It is established that the introduction of schemes with through passage of dump trucks allows to reduce the volume of mining and capital works by 2.7-7.5 million m 3 , fuel consumption by 150 thousand liters (2 liters for each transport cycle of dump trucks), to save land. from violation by open mining operations of 5-13 hectares, depending on the model of dump trucks used for transportation of rock mass and the depth of construction of the transshipment point.