Calculation of energy expenses for moving soil by the conveyor of the unit for tunneling

Abstract

Russia has a large spatial separation of settlements and other objects. Therefore, the construction of highways using technical means of cyclic action is inefficient. The use of a complex of continuous units will increase the pace of road construction, improve their quality and reduce energy costs. All units of continuous operation are patented in Russia. They allow you to perform the entire complex of road construction works by the flow method. The complex includes a tunneling unit for open and closed excavation, taking into account terrain irregularities. The proposed tunneling unit allows the development of tunnels with a width of 4.3 m and a height of 3.4 m using direct-flow rotary rippers, augers and passive knives. The calculation of the main parameters of the tunneling unit conveyor drive is carried out. The theoretical capacity of the tunneling unit, in the absence of rocky and frozen soil, in terms of the volume of undrafted soil was 1.054 m3/s. As a result of calculations, the total energy costs for moving one cubic meter of soil amounted to 38218 J/m3. The estimated power of the conveyor drive (excluding idling) was 52 kW. The torque of the conveyor drive is 936 Nm.