Estimation of general and set steps of roof caving in rock mass with excavations at mining. Numerical modelling.

International Conference on Mechanical Engineering, Automation and Control Systems 2015

机械制造;无线电电子学;计算机科学

Eremin, M.^1 ; Makarov, P.^1

Tomsk State University, 36, Lenina ave., Tomsk

634050, Russia^1

关键词: 2D modelling;    Coal seams;    Rock mass;    Rock mass elements;    Roof caving;    Theoretical estimation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/124/1/012051/pdf
DOI  :  10.1088/1757-899X/124/1/012051

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The results of 2D modelling of rock mass elements fracture are shown in the article. The results of modelling are in a good agreement with empirical and theoretical estimations of roof caving steps for the flat-dipping coal seams when the horizons are not so deep (less than 600 m). The estimations of the general and set steps of roof caving are given for the lava conditions at different lengths of the main roof containing sandstone.