Approach to Estimate Rational Parameters of Rock Destruction from a Function of a Cutting Force

International science and technology conference "Earth science"

Averin, E.A.^1 ; Zhabin, A.B.^2 ; Polyakov, A.V.^2

Designing Department, OOO SOEZ (LLC), Eksperimentalnaya str. 8, Komsomolskiy vil., Tula

300911, Russia^1

Geotechnologies and Underground Construction Department, Tula State University, Lenin av., 90, Tula

300600, Russia^2

关键词: Cutting forces;    Excavation performance;    Optimal values;    Power resources;    Practicing engineers;    Rock destruction;    Rock properties;    Specific energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/272/2/022002/pdf
DOI  :  10.1088/1755-1315/272/2/022002

来源: IOP

【 摘 要 】

One of the main topics in modern mining science is the prediction of the excavation performance. The most used indicators describing excavation efficiency are specific energy and cutting force. At this the last one is of primary concerns of practicing engineers and researchers. Cutting force depends on physical properties of a destructed rock, tool's geometry and technical parameters of the process such as penetration, spacing, etc. Rock properties are almost always considered as unchangeable parameters of the process. So in order to use rationally limited power resources of a machine mechanical excavator's manufacturers and miners only optimize tool's geometry and technical parameters of the process. Most of them are hardly changeable during exploitation. Thus, it is a responsible challenge to estimate optimal values of the parameters that is not still properly executed. The proposed approach is a mathematical, which defines cutting force as a function of a variable. It depends on estimation of such a value of the variable that relates to a specific relation λ between changes of the argument δχ and the function δy. The approach could be used not only on the designing stage of a project but also for in-situ decision-making on the changing of a specified parameter depending on permanently build function of cutting force.