... an insight into the challenges of a change to the overall construction system, undertaken after the award during the construction period, for the driving of altogether 17,500 m of tunnel bores. Construction operations, logistics, design for construction, additional investigation measures and contractual...

... Abstract Research on the fluid flow characteristics of fractal single fractures with different water pressure heads H , fracture widths e and fractal dimension D has been investigated, and a comprehensive index Fr coupling the three factors was proposed. The evolution of flow rate Q...

... rocks of cavern will produce different deformation and failure modes under different layered angles. Therefore, it is particularly important to fully understand the failure process and mechanism of layered rock. Aiming at this scientific issue, most studies focus on investigating the mechanical behavior...

... Abstract The effects of commonly encountered mineral infills on shearing behaviour and shear strength development has not been extensively investigated, highlighting a need for further work. This paper compares the results obtained from a series of direct shear tests using replicates...

... was discussed, and then the specimen size effect and optimal size range were investigated experimentally to obtain a more reliable tensile strength. Results show that the maximum stress near the inner and outer bottom are close to each other and a reliable tensile strength could be obtained when the ratio...

... Abstract Although freezing has been used for decades for improving the strength parameters of rock masses around underground openings, there is limited research on the behavior of frozen materials. The objective of this paper is to investigate the relationship between different mechanical...

...-increasing cost of site investigation, it is neither practical nor economical to acquire Geodata at each point of interest for a complete definition of ground behavior. This situation makes it necessary to explore spatial-variability modeling alternatives that can manage limited Geo-information...

... Abstract This paper is a preliminary investigation of the effect of pillar shape on pillar strength. This aspect is important owing to the poor pillar cutting discipline in some hard rock mines. Laboratory testing of concrete samples of different shapes indicated that triangular- shaped...

... Abstract With the continuous increase in traffic and population, Underground Metro Projects are becoming projects of utmost importance. Despite the considerable effort that goes into planning of ground investigations along station and tunnel alignment, unforeseen geological conditions...

... investigations, forecasting or experientially predicted) or reactively (rehabilitation or modification due to the changes from expected conditions). In both circumstances, there is a cost implication to the operation requiring a budget for each of the mining cycle phases. When insufficient expenditure...

... Abstract The air-deck charge has been applied to the open-pit blasting for a long time. However, the effects of air-deck ratio on ground vibration are not clarified yet. In this study, the influences of air-deck ratios have been investigated based on field experiments. Firstly, five blasting...

... exploration is, in general, a trustworthy geotechnical investigation method, its localized aspect and economics implication are a real disadvantage. It is clear then, the need of alternative methods which help on ground exploration objectives. As a result, implementation of geophysics in engineering has...

... tunnel excavation tbm excavation inclinometer history reservoir characterization displacement deep-seated landslide insar borehole imaging production monitoring real time system barla tunnel lining diameter settlement extrusion investigation objective segmental lining Rock Mechanics...

... provided key inputs to the refinement of geometrical descriptions and helped in validating geometrical and geomechanical assumptions implemented in the models. In addition, investigations formed valuable input to grouting design. 1 Introduction 1.1 Background A thorough understanding of geological...

... the capital Ljubljana and port of Koper and the site investigations carried out for the need of new railway line were instrumental to reveal the structural features of Karst Edge. The overlap of thrust faults formed ideal conditions for the formation of karst features in the Slovenian Karst plateau, which...

... to develop ideas about geodynamic risk not only from the technical side, but also from the economic side, as well as revealing its impact on the financial and economic activities of the mining enterprise. upstream oil & gas reservoir characterization matrix investigation prediction category...

... cumulative settlement sutong gil artificial intelligence tunnel construction investigation figure 5 formula disturbance lateral settlement equation Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4...

... by means of a TBM. This executive choice requires a full knowledge of the geological/geomechanical setting already in the first stages of a project. Failing careful well-addressed preliminary investigations can result into unexpected incidents, with delay of the timing, increase of the costs and also...

... The characterization of rock slopes and stability investigation is becoming increasingly important for both safety and economic reasons. Continuous population growth is promoting the increased urban development in areas of steeper topography. Increasing demand for mineral resources has led to the excavation of deeper...

... stability reservoir characterization baczynski variability barton defect co-aligned defect spm strength adjustment calculation investigation defect strength monte-carlo simulation strength deviation sampling theory rm strength appreciation Rock Mechanics for Natural Resources...