Deep excavation construction safety has become a challenging and crucial aspect of modern infrastructure engineering, its risk assessment is frequently carried out using the Fuzzy Analytic Hierarchy Process (FAHP). However, when FAHP to evaluate risks deep construction, results weightings obtained through subjective weighting are heavily influenced by factors evaluators. In addition, linear ope...

For the high precision calculation of mechanics mechanism for surrounding rock with large deformation, numerical calculation and application of large deformation damage constitutive model have been researched. Based on large deformation finite element theory, large deformation calculation process was proposed and the statistical constitutive model and parameter estimation method of rock damage ...

The Chaco leaf-cutting ant Atta vollenweideri (Forel) inhabits large and deep subterranean nests composed of a large number of fungus and refuse chambers. The ants dispose of the excavated soil by forming small pellets that are carried to the surface. For ants in general, the organisation of underground soil transport during nest building remains completely unknown. In the laboratory, we invest...

Synthetic polymer fluids are becoming a popular replacement for bentonite slurries to support excavations for deep foundation elements. However, the rheological properties of the polymer fluids used in excavation support have not been studied in detail, and there is currently confusion about the choice of mathematical models for this type of fluid. To advance the current state of knowledge, a l...