... Abstract Underground excavations for the development of infrastructure, mining operations, waste management etc. require support measures to ensure stability both during their construction and operational phases, which highly depends on the rock mass strength and deformability. Discontinuities...

... Abstract Posiva Oy has conducted investigations into excavation damage, including comprehensive laboratory testing of physical properties of rock specimens from excavation damaged rock mass. Laboratory testing was conducted on drill core specimens extracted from the excavated surface...

.... This paper discusses the rock engineering aspects of Shaft O1, including the engineering geological aspects and the methods of analysis used to design the reinforcement and support of the section of the shaft excavated in rock. Finally, the conditions encountered and the support installed during...

... geology mathematics of computing reservoir geomechanics cavern practice iop publishing iop conf weakness plane upstream oil & gas europe government geological subdiscipline cavern excavation assessment investigation reservoir characterization excavation rock engineering underground...

.... Introduction For thousands of years, mining activities have been evolving over time, however the basic principals have remained constant: excavate the area of interest by means of open pit and/or underground mining, extract the material of interest and leave the waste behind. The legacy of selected methods...

... Abstract The development of Turkey’s deepest coal mine is currently underway to the proposed depth of 1200 meters (m) below surface at the Soma Coal Basin. An 11 m intersection forming an access way from one of the main declines was excavated at approximately 900 m below surface collapse...

... Abstract Within the scope of the Ankara-Istanbul High Speed Train Project, the T29 tunnel was opened to traffic after completing excavation and support implementation. The tunnel was excavated in weak to very weak graphitic schists causing severe face stability problems and deformations...

... conditions are not common: there are only a few attempts to correlate machine data with geotechnical conditions during excavation and in most cases the use of machine data is related to assessment of TBM performance for prediction of advance rate. The analysis of TBM parameters may represent an interesting...

... acknowledgment of the area, a new excavation design was presented for the underground phase, using Finite Element analysis, where global and local stability is assessed. Moreover, the innovative idea, for marble underground quarries, was to contribute to the circular economy and the current environmental...

... the excavation works. Introduction Large caverns do exist for several decades, essentially in dam engineering for placing generators. Large underground caverns are also required for storing hydrocarbons. They look very similar in shape but their design is very different [1, 2, 3]. The most important...

... Abstract This paper presents the details of the approach to numerical modelling of the subvertical rock slopes resulting from the deep excavations associated with the foundations and basements for Hinkley Point C, Nuclear Power Station, in Somerset, UK. The ground model, which was based...

... Abstract In the context of the Saint-Martin-la-Porte survey project of the Lyon-Turin railway link, an access gallery (SMP2) was first excavated across a Carboniferous formation, where tectonized productive Houiller was met at a depth of 300 m. It exhibited a highly squeezing behavior...

... Abstract Excavations in rock masses determine the creation of temporary or final exposed surfaces. Features of these surfaces are depending on both geostructural pattern of the rock mass and adopted excavation method: among the others, roughness, quality of the contour and induced damage...

... Abstract One of the plans for the production of Turkey’s largest oil reserve, Bati Raman (1.85 billion barrels), is to use Mining-Assisted Heavy Oil Production (MAHOP). In this method, twin declines are excavated from the surface to the reservoir and a series of excavations (galleries...

... of two new modern cableways joining each other at adjacent arrival stations founded in the 50-70° steep west face of the Klein Matterhorn, at 3’820.5 m a.s.l. Due to the steepness of the slope, construction works require extensive excavation and stabilization of the serpentinite bedrock and consequently...

... Abstract Full-scale linear cutting test is one the most preferred and reliable methods for performance prediction of mechanical miners. Raise Boring Machines (RBMs) are one of these mechanical miners which are commonly used for drilling / excavation of shafts for different purposes in mining...

... Abstract The use of Tunnel Boring Machines (TBM) for tunnel excavation is widespread around the world for its capabilities and great advantages against the traditional tunnel excavation method, but sometimes this technology can be difficult to manage, requiring huge spaces for the assembly...

... around drifts during and after their excavation. Particular attention has been made to the excavation induced damaged zone [2]; pore pressure distribution [3]; permeability change [4]; and rock deformation [5]. Moreover, COx claystone exhibits also time-dependent behavior, which is clearly observed...

... analysis and can be used to identify and highlight the maximum likely overbreak or scenarios where overbreak is expected to occur. Introduction The need to understand and quantify overbreak in tunnels and underground excavations is of significant importance to engineering projects. Overbreak has been...

... of the underground excavation. For example: along a tunnel axis the natural stress varies due to overburden and lithological changes; in a cortical marble quarry chamber, the natural stress field varies with the distance from the slope. In cases like these, a satisfactory knowledge of the virgin stress field can...