Experimental Study on the Performance of Different Meshes Under Quasi-Static Loading
Understanding the performance and failure mechanisms of surface support in mine roadways is paramount to the success of mine productivity. A sophisticated facility has been developed to evaluate the mechanical behavior of surface support under quasi-static loading. Three different types of mesh, wel...
Saved in:
Published in | Rock mechanics and rock engineering Vol. 55; no. 1; pp. 249 - 258 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Vienna
Springer Vienna
2022
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Understanding the performance and failure mechanisms of surface support in mine roadways is paramount to the success of mine productivity. A sophisticated facility has been developed to evaluate the mechanical behavior of surface support under quasi-static loading. Three different types of mesh, welded wire mesh, chain-link mesh, and geogrid mesh are tested in conjunction with different surface components including rock bolt plate, steel strap and W-strap. It is found that the welded wire mesh has the higher stiffness and load-bearing capacity than the diamond mesh and the geogrid mesh. For each mesh, the incorporation of steel strap or W-strap helps the load to distribute more uniformly to more wires than just adopting bearing plate alone, leading to a substantial improvement in both the stiffness and the load-bearing capacity. The welded wire mesh can still withstand large deformation after peak load. In contrast, the diamond mesh and the geogrid mesh lose its capacity quickly after peak load. |
---|---|
ISSN: | 0723-2632 1434-453X |
DOI: | 10.1007/s00603-021-02651-4 |