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Optimization analysis on the support performance of composed anchor rod components in gob-side roadway
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Title: Optimization analysis on the support performance of composed anchor rod components in gob-side roadway

Creator:

Yu, Jiang ; Jin, Linlin ; Ma, Hongfa ; Zhang, Jun ; Wang, Feng ; He, Xin ; Yin, Dawei

Description:

Mining Science, Vol. 32, 2025, s. 65-85

Abstrakt:

In response to the failure problem of the roadway support structure for the deep buried mine, the mechanical calculation model was established based on the stress state and the boundary conditions of the composed anchor rod under the large surrounding rock deformation, and the failure discrimination criterion was obtained. Then a structural analysis unit for rock-composed anchor was established using ANSYS simulation software, which intensively researched the single-point and local failure characteristics of anchor rods in gob-side entries, and the optimization measures of the com-posed anchor rods were proposed. The findings reveal that the higher preload could restrain the axial displacement of the anchor rod, leading to stress concentration, fracture, or loosening of anchor bolts or nuts by the insufficient rock deformation. In addition, the stress concentration and plastic defor-mation of pallet orifice are significant as the main pressure-bearing part. The increase in the surround-ing rock deformation leads to an enhanced combined action of pressure and shear force between the steel strip and the pallet edge, which makes the steel strip prone to failure. Consequently, the optimiza-tion measures of reducing prestress and increasing the size of pallet and strip are proposed, which can effectively control the deformation of surrounding rock and reduce the stress concentration, plastic deformation and failure rate of composed anchor rod.

Publisher:

Wroclaw University of Technology

Place of publication:

Wrocław

Date:

2025

Resource Type:

journal

Resource Identifier:

oai:dbc.wroc.pl:140064

Source:

click here to follow the link

Language:

eng

Relation:

Mining Science ; Mining Science, Vol. 32, 2025 ; Prace Naukowe Instytutu Gornictwa Politechniki Wroclawskiej ; Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii

Rights:

Pewne prawa zastrzeżone na rzecz Autorów i Wydawcy

Access Rights:

Dla wszystkich zgodnie z licencją

License:

CC BY-NC 3.0 ; click here to follow the link

Location:

Wroclaw University of Technology

Group publication title:

Mining Science

Subject and keywords:

mining geology geo-engineering

Object collections:

Last modified:

Sep 16, 2025

In our library since:

Sep 16, 2025

Number of object content hits:

41

All available object's versions:

https://dlibra.kdm.wcss.pl/publication/178896

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Edition name Date
Optimization analysis on the support performance of composed anchor rod components in gob-side roadway Sep 16, 2025

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