Coal mine roadway roof caving high risk areas recognition technologyCoal mine roadway roof caving high risk areas recognition technology
Abstract：In order to detect the high risk areas of roof caving accident,a mechanical model to calculate the stable span of the roof strata was built,the analysis of the main factors of strata stability was done,the discriminant formula of the stable span was acquired,it became easier to quantitate with the established contacts between the roof stability classification according to the position changes of stable rock,and support parameters.Based on this and the help of roof detector and rock structure peep instrument,the roof stability classification of single borehole in any combinations of litho logy is classified into stable,mid-stable,unstable,extremely unstable four grades.The roof stability classification map,which is drawn based on extensive borehole data analysis and the interpolation and drawing function of SUPFER,can clearly marks the high risk areas,it can greatly reduce the probability of roof caving accident and ensure the safe production of coal mining via taking preventive measures targeted and in time.
Keywords：roof cavinghigh risk areasroof structure detectionstability classification
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)