Please use this identifier to cite or link to this item:
Title: An investigation of the rock mechanics aspects of a system of short face in-seam development for subsequent longwall retreat extraction
Authors: Sheorey, Prakash R
Issue Date: 1976
Publisher: Newcastle University
Abstract: The research work undertaken in this study was sponsored by the National Coal Board and consists of an investigation into the rock mechanics feasibility of a method of in-seam development by short faces with a centre pack, creating two roadways for subsequent retreating. An elastostatic solution by an approximate analysis has been given for this method of advancing for roof behaviour and to obtain pack load with face advance and the ribside abutment pressure distribution. The elastostatic analysis for the short face advancing situation has been done for anhydrite (setting) and conventional (non-setting) packs. A method is given for assessing the ribside abutment loading during subsequent retreating and loads in the goat. The floor loadings obtained during short face advancing and subsequent retreating have been used for a floor stress analysis and for predicting the post-failure viscoelastic floor heave during retreating. Some anhydrite properties relevant to the analysis have also been investigated in the laboratory and a formula for estimating the in-situ strength of anhydrite packs has been given.
Description: PhD Thesis
Appears in Collections:School of Civil Engineering and Geosciences

Files in This Item:
File Description SizeFormat 
Sheorey 76.pdfThesis15.95 MBAdobe PDFView/Open
dspacelicence.pdfLicence43.82 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.