标题：RESEARCHES REGARDING THE ASSIMILATION OF NEW CONSTRUCTIONS OF MOLDED PROFILES AND JOINING ELEMENTS FROM THE COMPONENT OF METALLIC SUPPORT FOR SUPPORTING THE UNDERGROUND MINING WORKS
期刊名称：Constantin Brancusi University's Annals, Letters and Social Sciences Serie
印刷版ISSN：1844-6051
出版年度：2011
期号：4
出版社：Academica Brancusi Publisher
摘要：Performing the underground mining works of opening and preparing of the hard coal deposit from Jiu Valley continues to be accomplished by supporting with metallic support of SG laminate (actual, in exclusivity by SG.23 laminate), the same classic support system from over 50 years. Besides the inconvenient of the outdated support built, it is exposed, when using in underground, to a large range of loads, asymmetrically assigned on the excavation‟s contour, with a effect over the un-correlation of the elastic slide regime, for vertical loads of the elements, with an asymmetrical assign of stress. In the paper are presented new orientations for replacing the actual joining system of the support‟s elements, including the existent laminate replace cu other types, of which joining mode suppose the integral contact between the collars, trough the grooves applied to its base and destined for this.
