Energetic approach to the evaluation of rock disintegration process

Abstract

Rock disintegration process may be investigated by several methods. Energetic approach represents one of the methods of characterizing the energetic-transformation changes of rock disintegration process, as the rock disintegration occurs after an increase of the inner energy above the binding energy of its components. The paper review theories of disintegration processes with an energetic approach. Methods of investigation are presented in more details, using a rotary disperser with a calorimeter and an experimental drilling stand, the experimental devices designed and constructed at the Institute of Geotechnics, SAS, providing an imitation of the rotary drilling of rocks. The experimental drilling stand enabled to examine the drilling tools used in industry. The monitoring system installed on the stand scans the regime parameters of the disintegration process. Both the specific disintegration energy and the drilling rate, calculated from the monitored input and output parameters of the process, serve as evaluating variables of the rock disintegration process efficiency. The main effort in the evaluation of parameters from the rock drilling monitoring is to derive the relations that would provide data necessary for the control of drilling process in a real time.

Keywords

• cutting process
• rock mass
• specific disintegration energy
• thermal energy
• monitoring of drilling