Fault, crushed zone, and other unfavorable geology may frequently appear in the construction of tunnels, so it is course necessary to study on dynamic properties tunnels crossing rock fracture zone. Taking tunnel faults as object, this paper discussed constitutive relation satisfied by structures researched loading features failure characteristics different faults. It shows that: (1) areas with...

With an increase in the service time of high-speed railway tunnels, various defects caused by construction-quality secondary lining begin to appear. How evaluate safety such tunnels and take countermeasures is very important for safe operation tunnels. Based on load-structure method a numerical simulation, this paper studied short-term long-term missing section anti-crack reinforcement mesh pla...

Purpose: justification of irrigation canal impervious linings use with new materials and methods for their calculation. Materials methods. The proposed improved designs canals were the research. To determine specific filtration flow, calculation free backed concrete-film damage in polymer geomembrane, taking into account moisture contours partial soil saturation water at base used. Results. Amo...