Analysis of roof bolting parameters to support inclined mine workings
Journal Title: Вісник Житомирського державного технологічного університету. Серія: Технічні науки - Year 2018, Vol 82, Issue 2
Abstract
Objective of the paper is to analyze a state of border rock mass of inclined mine working with roof bolting and to determine rational roof bolting parameters in the deepening process in the context of k7 seam of Novodonetsk mine. Research methods. Roof bolting parameters for the inclined mine workings were substantiated while analyzing regularities of changes in behaviour and stress-strain state of rock mass and identifying displacements of rock contour of a mine working as well as determining rational values of anchor lengths and roof-bolting density based upon them. A finite-element method was applied to analyze changes in the behaviour and stress-strain state of border rock mass of inclined mine working with roof bolting. Scientific novelty. Graphs of dependences of roof rock border displacements and floor of inclined mine working on its depth in terms of anchor length and roof bolting density for mining and geological conditions of k7 seam in Novodonetska mine have been obtained. Practical relevance. Results of the studies may be used at a design stage to forecast displacements of a roof, a floor and walls of inclined mine workings under the conditions of k7 seam in Novodonetsk mine to optimize roof bolting parameters. Results. A method to analyze both stress-strain state of border rock mass of inclined mine workings with roof bolting has been substantiated. Calculation model to solve a problem concerning the determination of rational roof bolting density and anchor lengths to support inclined mine workings in the context of their depth changes has been developed. Rational parameters of roof bolting while supporting inclined mine workings under specific mining and geological conditions have been determined.
Authors and Affiliations
R. M. Tereshchuk
Keywords
Related Articles
- EP ID EP420936
- DOI -
- Views 112
- Downloads 0
Research of electrodynamics characteristics of antennas in the form of an open end of a rectangular waveguide with partial dielectric filling and excitation pin
The electrodynamics characteristics of the antenna in the form of an open end of a rectangular waveguide with partial dielectric filling and a pin of excitation are studied. In the antennas in the form of an open end of...
Impact of window function on statistical index of quality of spectral estimates of poliharmonic acoustic signals
As the role of passive acoustic systems of extracting information is increasing in military sphere the interest to algorithms of polyharmonic acoustic signals detection has grown greatly. The difficulty of detecting such...
Study of the action of blast deck charge in rocky soils
Blasting (B) in the industry, including the mining extraction of minerals, are carried out mostly with the use of blasthole charges that systematically distributed on the block that is undermined, by individual groups. T...
Studies of the process of slipping a single car wheel
The article gives the analysis of known researches connected with studying of features of interaction an automobile wheel with loose soil. On the basis of the analysis of the state of study the question of modeling the w...
Analysis of the errors of MEMS accelerometers by the Allan variation method
In the article we obtained the generalized equation of errors of SINS accelerometers, its components give a characteristic of the influence of conversion coefficients errors, the inaccuracy in the installation of acceler...