Ispitivanje čvrstoće pri savijanju višeslojnih uzoraka prirodnog kamena

master's thesis

• Title: Ispitivanje čvrstoće pri savijanju višeslojnih uzoraka prirodnog kamena : diplomski rad
• Title (english): Testing of flexural strength of multi-layered samples of natural stone : master's thesis
• Author: Luka Tomac
• Mentor: Petar Hrženjak (mentor)
• Committee member: Petar Hrženjak (predsjednik povjerenstva)
• Committee member: Antonia Jaguljnjak Lazarević (član povjerenstva)
• Committee member: Tanja Mališ (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering); Zagreb
• Defense date and country: 2023-09-14, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Mining

Abstract

Čvrstoća pri savijanju bitan je pokazatelj kvalitete prirodnog kamena i važna značajka pri proračunu stabilnosti podzemnih prostorija kamenoloma prirodnog kamena. U ovom radu prikazana je teorija savijanja greda te ponašanja slojevite stijenske mase u krovini podzemnih prostorija prema Obertu i Duvallu. Provedeno je laboratorijsko ispitivanje čvrstoće pri savijanju višeslojnih uzoraka prirodnog kamena „Kanfanar“ sa međusobno različitim međuslojnim uvjetima. Na kraju je provedena analiza rezultata na temelju koje je provjerena ispravnost teorijskih rješenja Oberta i Duvalla za proračun nosivosti krovine podzemnih prostorija kamenoloma prirodnog kamena.

Abstract (english)

The flexural strength is an important indicator of the quality of natural stone and an important feature in calculating the stability of underground rooms of natural stone quarries. This paper presents the theory of beam flexure and the behavior of layered rock mass in the roof of underground rooms according to Obert and Duvall. A laboratory testing of the flexural strength was carried out on multi-layered samples of natural stone „Kanfanar“ with different interlayer conditions. At the end, an analysis of the results was carried out, on the basis of which the useability of the theoretical solutions of Obert and Duvall for calculating the stability of underground rooms of the natural stone quarry was verified.

• Keywords: laboratorijsko ispitivanje; čvrstoća pri savijanju; prirodni kamen
• Keywords (english): laboratory testing; flexural strength; natural stone
• Language: croatian
• URN:NBN: urn:nbn:hr:169:560051
• Study programme: Title: Mining Engineering; specializations in: Mining engineering, Geotechnical engineering, Waste treatment and disposal; Course: Geotechnical engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka rudarstva (magistar/magistra inženjer/inženjerka rudarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-10-12 08:44:12