Results 31 to 40 of about 17,530 (271)
Use of Automatic Target Recognition System for the Displacement Measurements in a Small Diameter Tunnel Ahead of the Face of the Motorway Tunnel During Excavation [PDF]
, 2008 During construction of the Sentvid tunnel a unique opportunity arose to measure the 3D displacements ahead of the motorway tunnel excavation face, since the exploratory tunnel was already constructed in the axis of the main tunnel.
Ambrožič, Tomaž +5 more
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Implementation of probabilistic approach to rock mass strength estimation while excavating through fault zones [PDF]
, 2019 Purpose. The paper addresses the rock mass state estimation while excavating a cross-heading through the area of regional fault “Bohdanivskyi” based on probabilistic approach to assessing the rock strength. Methods.
Babets, D +4 more
core +1 more source
Sustainable shotcrete production with waste glass aggregates
SN Applied Sciences, 2022 Article highlights This study investigates sand replacement with glass aggregates in shotcrete production for use in excavation industry. Tested shotcrete mixes containing glass aggregates exhibited a similar or higher strength properties at both early ...
Mehdi Serati +4 more
doaj +1 more source
Shock and Vibration, 2019 The drill and blast method is widely used in constructing tunnels in rock. Unfortunately, blasting vibration can damage newly performed shotcrete layers which are major support structures to stabilize surrounding structures.
Ao Li +5 more
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Evaluation of shear behaviour of masonry walls strengthened by FRP laminates and shotcrete [PDF]
Journal of Structural and Construction Engineering, 2019 Extensive damages in a large number of existing buildings under in-plane shear has shown the need of structural strengthening techniques for masonry structures.
mohsen izadinia, rahmatollah pourjaafary
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Self-regulating roof-bolting with the rock pressure energy use [PDF]
, 2018 The perspective of discovery of zonal disintegration phenomenon of rocks around underground mine workings is analyzed. The methodological stages for research of this phenomenon are shown.
Astafiev, Denys +10 more
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Applied Sciences, 2022 Wet-mix shotcrete has been widely used to support roadways during the excavation of underground mining. In practice, the mix proportion of wet-mix shotcrete plays a key role in later successful application.
Bin Han +4 more
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INVESTIGATING THE FEASIBILITY OF USING RECYCLED FIBRES INSTEAD OF INDUSTRIAL FIBRES IN SHOTCRETE
Rudarsko-geološko-naftni ZbornikShotcrete is one of the standard systems used in the tunnelling industry, including cement, sand, water, and additives. Adding fibres to shotcrete is a method to enhance its mechanical properties.
Shahla Miri Darmarani +3 more
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Early-age strength measurement of shotcrete [PDF]
, 2015 Shotcrete or sprayed concrete is a special concrete designed for spraying onto a surface, as a construction material. With shotcrete application as a ground support system ever-present in both mining and tunnelling sectors, a major requirement of drive ...
Mohajerani, A +3 more
core +2 more sources
Analysis of Support Reaction Curves considering Time-Varying Effect of Shotcrete
Advances in Civil Engineering, 2020 The core content of the convergence constraint method is to determine the reasonable support time and support stiffness. The stiffness of shotcrete in supporting structure is dynamic.
Ya-Qiong Wang, Ming-Rui Luo
doaj +1 more source