Browsing by Subject "underground structures"

Now showing 1 - 6 of 6

Access status: Open Access ,
Doświadczenie przedsiębiorstwa WARBUD SA w dziedzinie budownictwa podziemnego
(2007) Grodecki, Wojciech
The paper presents Warbud SA's selected achievements in the field underground construction with the use of the cut-and-cover method and in particular with the use of the slurry wall method. The construction process for the A15 »Ratusz« and A19 »Marymont« underground stations was described as well as the methods for building underground levels of volume structures. The originality of technological solutions deciding about the contractors' success as well as technical and economic benefits resulting from the applied solutions were presented. The company's potential to build slurry walls and the possibilities for cooperation with Soletanche Polska was discussed. Soletanche is a French company which cooperates with Warbud SA within the French holding of construction companies - VINCI Construction.
Access status: Open Access ,
Elementy diagnostyki i metody oceny stanu konstrukcji budowli podziemnych
(Wydawnictwa AGH, 2009) Duży, Stanisław
The goal of quality analysis is the definition of the quantity and distribution of deviation from design parameters values that characterise the heading. This goal is achieved by measurements of the selected parameters that characterize the construction quality in all of the buildings existence phases. The specification of parameters that characterise the buildings construction workmanship quality is dependent on the character of the analysed construction and the used stability evaluation method. The requirements, in the area of quality in designing, reception attempts, usage and maintenance and the buildings liquidation should be regulated by rules that correspond to the requirements of the PN-IS0 9001-9003 norm. In the article, the requirements in the area of quality management in all phases of the building existence point to the usable methods and tools are discussed.
Access status: Open Access ,
Elementy teorii niezawodności i bezpieczeństwa konstrukcji w projektowaniu budowli podziemnych
(Wydawnictwa AGH, 2005) Duży, Stanisław
The choice of support of underground structures is executed with the usage of a range of data describing with smaller or bigger approximation. This status leads to a situation in which most of the data may be treated as variable. The valuation of mining support safety is possible only with the usage of the construction safety and reliability theory in which we can see three basic ideas: reliability, safety and quality. The paper presents the results of excavation realizing quality and an analysis of reliability and safety of 178 excavations located in 17 regions of GZW mines has been executed and has shown that an applicated support, due to the changeability of input data differences, was characterized by changeable error possibility. A possibility of using risk function as a target function in the excavation construction optimization has been indicated. The expediency of using the reliability and safety theory in underground structure designing has been proven.
Access status: Open Access ,
Kształcenie kadr inżynierskich w dziedzinie budownictwa podziemnego na Politechnice Warszawskiej
(2007) Grodecki, Wojciech; Siemińska-Lewandowska, Anna
The paper presents the system of education of civil engineers in the area of Underground Structures in Bridges and Underground Structures specialisation. The total amount of obligatory lectures and practice courses on undergraduate (B.Sc.) and graduate (M.Sc.) levels are given.
Access status: Open Access ,
Problemy nośności stalowej obudowy odrzwiowej wyrobisk korytarzowych użytkowanych w długim okresie
(2007) Chudek, Mirosław; Duży, Stanisław; Dyduch, Grzegorz; Bączek, Arkadiusz
Over 90 percent of headings in collieries are made with steel support. This support is often under intensive, aggressive influence of mining conditions causing a slow decrease of construction load capacity. The paper presents results of in situ research of corrosion of steel support set ŁP, on the basis of headings steel supports set, used in a long period of time, reliability maintenance geomechanical and technical problems. On the basis of the results of the research, the characteristic features of the corrosion process and their influences of the construction load capacity are presented.
Access status: Open Access ,
Zachowanie się odrzwi stalowej obudowy podatnej w warunkach deformacyjnych ciśnień górotworu w świetle obserwacji dołowych
(2007) Duży, Stanisław
In the rock strata deformation pressures occurrence conditions a yielding steel arch support is commonly used. In the commonly used support work models, symmetrical support deformations, caused by a simultaneous dislocation in both arch locks, are adopted. Underground observations have shown that the deformations of even neighbouring arches may differ emphatically in quality as well as in amount. The paper presents results of yielding steel arch support behaviour in headings in mining exploit area, on the basis of which the statement can be made that the yielding steel arch support during the usage of the heading is deformed within the range of the susceptibility and the plastic elements deformations, in some arches the deformations had the factors of stiff support deformations, the support deformations are characterised by asymmetry, often the dislocations occur in only one lock and the deformation process of certain arches along heading coastings show its, which can be compared to a wave process.