Study of effect hard rock layer has on floor heaving in coal mine by finite element method

Abstract

This paper presents the results of analytical study of the effect the hard rock layer has on floor heaving in mind by the finite element method using software solution SolidWorks Simulation (COSMOSWorks).In our experiments we analyzed the results of floor heaving with uniform structure. We made quantitative measures in relative metrics. The performance of limestone as a hard rock layer has been used, and claystone has been used as a basic rock in the model. Variations of thickness and layer depth of hard rock enables us to give more precise evaluation of changes in deflected mode which lead to displacement of floor rocks. The results obtained in the course of analytical research have qualitative value and can be applied in developing different criteria of evaluating occurrence and forecasting floor heaving.