The interaction influence on subway tunnels adjacent to foundation excavation was produced by excavation construction, and it is great significance for the correct assessment of its size and influence on the safety of subway operation. Based on the foundation excavation project, some typical foundation excavation profiles are selected, the calculation and analysis on additional settlement and h...

Deep rock engineering is in a high pre-stressed state before excavation. In this research, method to calculate the release of strain energy caused by excavation proposed. The normal stress after leads reduction specimens. influence height and width on inconsistent under vertical loading. When hole 1 mm, large, increase slow release. very small, an increasingly faster energy. This exponentially ...

The progress of excavation work has been regularly recorded by taking images during the excavation seasons of Finnish Jabal Haroun Project. This multitemporal archaeological imagery is collected during 1998-2003. Images have been taken daily from the archaeological excavation site, namely the monastic complex of St. Aaron located near Petra, in Jordan. The images have been taken with non-metric...

This paper presents, an in situ monitoring of the behaviour a partially saturated soil, subjected to unloading stress path resulting from excavations. The study case is 30m deep excavation for construction metro station, aim monitor evolution displacements and pore pressure during after different stages excavation. monitored soil expansive marl. first results have been collected analysed. Never...

Towards Autonomous Excavation of Fragmented Rock: Experiments, Modelling, Identification and Control Joshua Alexander Marshall Master of Science (Engineering) Department of Mechanical Engineering Queen’s University August, 2001 Increased competition and recent globalization in the minerals industry has resulted in further demands for advanced mining equipment technology. The autonomous excavati...

Estimation of the possible instability that may be encountered in the excavation slope(s) during the planning and application steps of the rock excavation processes is an important issue in geoengineering. In this paper, a modelling method is presented for assessing the probability of wedge failure involving new permanent or temporary slope(s) along the planned excavation dir...

We present models for the structure of the crust and upper mantle beneath lunar impact basins from an inversion of gravity and topographic data from the nearside of the moon. All basin models display a thinner crust and an elevated Moho beneath the central basin region compared to surrounding areas, a signature of the processes of basin excavation and mantle uplift during collapse of the transi...

GROSS cupping of the disc which is not glaucomatous, associated with a wide scleral halo, or ring, and pigmentary disturbance has been described several times in 'the literature. Itmay be unilateral or bilateral. The visual acuity may be much or little reduced ana the field restricted or normal. Where it is unilateral the'fellow eye may be quite normal. The cup may contain a fine film of bluish...

C onstruction is of prime economic significance to many industry sectors. Intense competition, shortages of skilled labor, and technological advances are forcing rapid change in the construction industry, thus motivating construction automation [1]. Earthmoving machines, such as bulldozers, wheel loaders, excavators, scrapers, and graders, are common in construction. Excavationbased operations ...

Knowledge of the ground condition and its hazards can play an important role in the selection of support and suitable excavation method in underground structures. Water transport tunnel is one of the most important structures with regard to the goal of excavation, special conditions and limitations considered in the design and execution of them. Beheshtabad Water Conveyance Tunnel with 64930 me...