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Article summary:
1. A new “anchorage + pressure relief” technology is proposed to balance roadway anchorage support and pressure relief.
2. The stress evolution characteristics of the hole-making diameter, hole-making angle, and dynamic pressure coefficient on the pressure relief effect are analyzed via numerical simulations.
3. Field engineering practice suggests that the maximum convergence of the two sides is 115 mm, and the stress of the anchor cable is < 200 kN after pressure relief via the internal hole-making operation.
Article analysis:
The article provides a detailed overview of a new “anchorage + pressure relief” technology for balancing roadway anchorage support and pressure relief in deep coal roadways. The article presents evidence from numerical simulations and field engineering practice to support its claims, which makes it reliable and trustworthy. However, there are some potential biases in the article that should be noted. For example, there is no mention of any possible risks associated with this technology or any counterarguments to its claims. Additionally, there is no discussion of any alternative technologies or methods that could be used for this purpose. Furthermore, while the article does provide evidence from field engineering practice to support its claims, it does not provide any evidence from other sources such as peer-reviewed studies or experiments conducted by independent researchers. This lack of external evidence may make it difficult to fully trust the reliability of the article's claims.
Topics for further research:
Alternative roadway anchorage support technologies
Pressure relief in deep coal roadways
Risks associated with anchorage + pressure relief technology
Peer-reviewed studies on anchorage + pressure relief technology
Experiments on anchorage + pressure relief technology
Counterarguments to anchorage + pressure relief technology