Experimental Study on the Performance of Different Meshes Under Quasi-Static Loading
| Autor: | Yuan Guiyang, Fuqiang Gao, Lou Jinfu, Hongpu Kang |
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| Rok vydání: | 2021 |
| Předmět: |
Rock bolt
Materials science Bearing (mechanical) business.industry Stiffness Geology Structural engineering Welding Geotechnical Engineering and Engineering Geology Quasistatic loading Types of mesh law.invention Geogrid law medicine Polygon mesh medicine.symptom business Civil and Structural Engineering |
| Zdroj: | Rock Mechanics and Rock Engineering. 55:249-258 |
| ISSN: | 1434-453X 0723-2632 |
| DOI: | 10.1007/s00603-021-02651-4 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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