Background: Coal mining requires safe and effective roadway support to ensure production worker safety. Anchor is a common method used for controlling the roof of coal seams. This study aims analyze effectiveness different anchor schemes provide theoretical basis designing support. Methods: The authors computer simulation tool called FLAC3D simulate spacing between bolts, bolt length, cable con...

Abstract This paper establishes the computational fluid dynamics models of marine submersible buoy system. The use incompressible Navier-Stokes equations, Renormalization-Group (RNG) turbulence model and fractional areas/volume obstacle representation method. Using lumped mass mothed to simulate anchor line power supply cable. result show that great tension forces increase occurs at moment when...

As the stress amplitude in anchorage zone of cable-stayed bridges vary considerably, it is essential to study fatigue-load-bearing capacity structures cable-stayed-bridge girders. In this study, mechanical properties and force-transmission mechanism a built-in double-fixed steel anchor box, as well influence geometric design parameters main pressure plates support on its performance, were studi...

The cable plays a vital role in roadway support. As the last barrier to prevent roof collapse and impact disaster accidents, it is of great significance study stress characteristics cables under dynamic load guide rock burst With high-strength Φ21.6 Φ21.8 mm low-resistance high-extension Φ21.5 as examples, this paper studied instantaneous mechanical state energy dissipation different types load...

In order to understand the deformation law and internal force distribution characteristics of pile-anchor retaining structure in deep foundation pit engineering, stress system process excavation was tested by using distributed optical fiber sensing technology BOTDA. It uses supporting pile cloth set up strain cable collect from stability pit, which analyzes distribution. The results show that o...

the load transfer mechanisms of cable bolts differ from those for normal rebar bolts. the cable bolts used in mines are basically steel strands with different constructions depending on the number of wires or elements and the way they are laid. tendon bolts (rebar and cable) are normally evaluated for their strength and load transfer properties. the tendon strength can be evaluated by the tensi...

In this study, an open-cut approach using steel-sheet piles and jet grouting for waterproofing was proposed to resolve the problem that ordinary pipe-jacking equipment cannot cross areas with existing anchor cables in soft stratum. The case history of a project sewage treatment plant Jinan East Railway Station area investigated. mechanical properties piles, horizontal displacement ground surfac...