Abstract The ground conditions beyond an excavation face, especially discontinuities in rock masses, have a significant influence on tunnel construction. However, the actual observed during construction are often different from predicted geotechnical site explorations carried out design stage. Changes may require alterations design, leading to substantial disruptions schedule and budget. In thi...

Abstract Subway stations are underground facilities of high responsibility. The use new construction technologies requires their scientific justification. single-vault station “Teatralna” the Dnipro Metro is designed as one that under by New Austrian tunneling method. Since this type a working large cross-section, it necessary to determine stress state rock massif, which affects temporary faste...

A tunnel is a symmetric structure working under uncertain load. In the traditional method of monitoring and measurement deformation, only small number measuring point displacements are engaged to represent overall deformation tunnel, it difficult fully reflect displacement changes during construction process. this paper, proposed for process based on 3D laser scanning technology. Initially, was...

We examined the effects of acute and/or chronic hypokalemia on responses to 30 min of hypoxia and recovery in the isolated, perfused heart model. We found that both acute hypokalemia and chronic hypokalemia impaired contractility [expressed as maximum slope of pressure increase over time (dP/d t): 501 ± 49 and 529 ± 48 vs. 1,302 ± 118 mmHg/s, P < 0.01] and recovery of ATP concentrations (determ...