Community Research and Development Information Service - CORDIS

Abstract

Investigations were carried out with the aim of extending the scope of operation of drum shearer loaders - particularly by improving techniques for working through geological faults. A wide range of trials was conducted below ground, which demonstrated the effectiveness of a newly developed pick coating of polycrystal sintered diamonds. The cost of such picks, however, remains high. Trials were continued using picks fitted with nozzles, which enhance the performance of shearer picks in rock. Particular attention was given to the relationship between pick wear and dust generation. For damping of horizontal oscillations, which impair the operation of drum loaders, stabiliser rings were developed for coarse-particle drums. As the operation of these drums in working through faults is always unscheduled, it was decided not to make use of the stabiliser rings below ground. Stresses caused by vertical oscillations of the ranging arm were reduced to a satisfactory level by the use of counter-pressure valves.

Additional information

Authors: BERGBAU-FORSCHUNG GMBH, Bergbau-Forschung GmbH, (D.M.T.), Bochum (DE)
Bibliographic Reference: EUR 13010 DE (1991) Vol. II, 213 pp., MF, ECU 12, blow-up copy ECU 27.50
Availability: (2)
Record Number: 199110082 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: de
Available languages: de