Reasoning of the Model Sizes in Modeling the Interaction between Tool and Rock

Abstract

Abstract. The article proves model sizes for modeling the interaction between tool and rock. The relevance of the research was considered. Information on the analysis of existing executive bodies (EB) used in mining, construction and municipal services is given. The finite element method is described, it was concluded in particular that the ideal model of the interaction of the executive body with the face rock would be a surface conjugated with the working of real dimensions located in an infinite massif or in a massif that is many times larger than the output. To solve the problem, cylindrical workings with a diameter D = 3.2 m were used, where the face shape is represented by two-thread helicoidal surfaces, surrounded by an around boundary massif with thickness B equal to 0.5D, D, 1.5D, 2D, 2.5D.The exterior surfaces of the model were fixed, and distributed loads corresponding to the interaction forces arising from the operation of the ETC-2086 bar unit installed on the basis of the MTZ-82 tractor were applied to the face surface. On the basis of the conducted research, the effect of the model size on the pattern of directed differentiated state (DDS) of a face was determined.

Development of a mathematical model of the interaction of the knife actuator of geokhod with the semiconvex shape of the cutting edge of the knife with the mine faces rock

“…In this regard, interest in the use of underground space is expanding, thereby the volume of construction of underground structures increases [1][2][3][4][5]. As a result of a number of studies aimed at increasing productivity, a new approach to the construction of underground structures has been formed -Geokhod technology, the basic element of which is a new class of mining equipment -Geokhod [6][7][8][9]. The development of Geokhod prototypes is constrained by the lack of scientific foundations for the creation of their systems.When constructing underground structures in the technological cycle, one of the main stages is the process of separating rocks from the massif.…”

The stress-strain state simulation for the auger-boring machine’s support-guide system

“…In the Siberian region, as well as in Russia and in the world as a whole, an active scientific and applied works is being carried out currently. The result of this work is the tunneling complexes implementation for a wide range of purposes, intended for mining and laying horizontal and slightly deviated holes for various purposes [1][2][3][4][5][6][7][8][9][10][11][12].…”