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.
Highlights
The formation of the underground space and the development of the Earth's interior are the most important tasks of the modern humankind activity and its future [1, 2]
The constant growth of urban territories shortage calls for the creation of a new underground infrastructure, which is an effective mean of solving transport, territorial and environmental problems of growing megacities [3]
A promising direction in the development of holes formation technologies in the underground space is the application of technology that we had called a “geowinchester technology”, the basic element of which is the geokhod
Summary
The formation of the underground space and the development of the Earth's interior are the most important tasks of the modern humankind activity and its future [1, 2]. A promising direction in the development of holes formation technologies in the underground space is the application of technology that we had called a “geowinchester technology”, the basic element of which is the geokhod. At the current stage of the development of geowinchester technology elements , there is an urgent need to develop constructive and technical solutions of the executive bodies capable of producing holes in the underground space in rocks with a strength of up to 1 according to Protodyakonovs scale [7, 8]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
