The presented studies confirmed stress formation patterns in concrete supports, which are the sum of gravitational, tectonic, and variable components, especially areas with active geodynamics. problem underground workings lining reliability is due to need solve problems determining stress-strain state level, taking into account all listed components forces strength properties. main parameters t...

The air shafts of coal mines contain solid, liquid, and gaseous substances that corrode concrete under conditions relatively high temperature humidity. coupling various factors decreases the strength thus bearing capacity shaft lining. In this study, corrosion tests were carried out by simulating complex environment a mine lining to study variation in stress-strain curve. For corroded specimens...

Abstract This paper investigates the stress transferring mechanism of a pressure tunnel strengthened with CFRP. A simplified mechanical model internal water transfer from CFRP to lining concrete is established, and key parameters that influence between are identified. solid-spring-solid three-dimensional finite element established. Using numerical model, influences above on ratios borne by inve...