Theoretical Justification of Reducing Soil Adhesion to the Surfaces of the Excavator Working Body at Creation Underground Infrastructure

It is proposed method of passive cleaning of the excavator working body from adhering soil that practically does not require additional energy. Theoretical studies of the surface temperature effect of the working body on the stickiness of cohesive fine-grained soils of different fractions are made, on the basis of which the calculation is made, and temperature regimes required to prevent adhesion are defined. The proposed design is recommended to be implemented in all types of shovels to improve the operational performance and, as a consequence, reduce the cost of earthworks.