Version 1
: Received: 13 November 2020 / Approved: 16 November 2020 / Online: 16 November 2020 (14:20:15 CET)
How to cite:
Kamiński, P. A New Method of Regulating the Load on the Shaft Lining in Sections Passing Through the Salt Rock Mass. Preprints2020, 2020110424. https://doi.org/10.20944/preprints202011.0424.v1
Kamiński, P. A New Method of Regulating the Load on the Shaft Lining in Sections Passing Through the Salt Rock Mass. Preprints 2020, 2020110424. https://doi.org/10.20944/preprints202011.0424.v1
Kamiński, P. A New Method of Regulating the Load on the Shaft Lining in Sections Passing Through the Salt Rock Mass. Preprints2020, 2020110424. https://doi.org/10.20944/preprints202011.0424.v1
APA Style
Kamiński, P. (2020). A New Method of Regulating the Load on the Shaft Lining in Sections Passing Through the Salt Rock Mass. Preprints. https://doi.org/10.20944/preprints202011.0424.v1
Chicago/Turabian Style
Kamiński, P. 2020 "A New Method of Regulating the Load on the Shaft Lining in Sections Passing Through the Salt Rock Mass" Preprints. https://doi.org/10.20944/preprints202011.0424.v1
Abstract
Rock salt is characterized by specific geomechanical and rheological properties. Layers of rock salt on depth over 900 m cause problems with shaft lining deformation. Methods of shaft lining protection used so far (e.g. in Sieroszowice mine) have not been effective enough. The research presents a patented and copyright protected concept of a shaft lining construction that can be used in rock masses with strong rheological properties and susceptible to leaching. In the case of salt layers, especially at significant depths the relative convergence of the heading contour may be about 40 ‰/year. That results in the fact that any other method of securing the shaft lining, e.g. by making it flexible, is not sufficient to ensure the stability of the shaft guidance geometry. In the new shaft lining concept, the excessive rock creep into the outbreak inside the shaft diameter is removed by local and controlled leaching of the shaft cheeks by means of fresh water through a porous medium at the contact layer behind the watertight tubing lining. The article presents the methodology of performing tests on a special device and the test results.
Keywords
mining shaft; salt rock; leaching
Subject
Engineering, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
