Design of a Highly Adaptable Advance Support for a Deep, Fully Mechanized Roadway and Analysis of Its Support Performance

Considering the harsh environment of deep, fully mechanized working faces and the acutely imbalanced time distribution among excavation, support and anchoring, this paper designed a new type of highly adaptable advance support for fully mechanized roadways that boasts high adaptability, great suppor...

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Bibliographic Details
Published in:Applied sciences 2022-12, Vol.12 (24), p.12728
Main Authors: Ding, Ke, Wang, Lianguo, Tian, Jiansheng, Ren, Bo, Jiang, Chongyang, Wang, Shuai
Format: Article
Language:English
Subjects:
Adaptability
advance support
Coal mines
Coal mining
Construction accidents & safety
Deformation
Design
Excavation
fully mechanized roadway
high adaptability
Hydraulics
Mechanical properties
Parallel operation
Roads
Roads & highways
Roofing
Stress
Stress distribution
support design
Working conditions
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Summary:Considering the harsh environment of deep, fully mechanized working faces and the acutely imbalanced time distribution among excavation, support and anchoring, this paper designed a new type of highly adaptable advance support for fully mechanized roadways that boasts high adaptability, great support strength and a large working space. Firstly, the structure composition and working principle of the advance support were introduced. The structures and mechanical characteristics were then emphatically discussed. Subsequently, with the geological conditions of the 8224-machine roadway in the XT Coal Mine taken as an example, the loads of the advance support were obtained and then imported into the Ansys software to obtain the stress distribution and displacement distribution of the whole advance support and its parts through calculation. Based on the distribution, the stress and strain of the advance support were analyzed. The simulation results are as follows: Under various working conditions, the maximum displacement of the advance support was 4.5 mm, which is negligible compared to the overall size of the support; the maximum stress was 72.8 MPa, which is lower than the yield strength of the material (235 MPa). Therefore, the designed support can bear the pressure from the surrounding rock in the mine. Moreover, the roof beam, which is a weak link in the support, deserves more attention in subsequent engineering designs. This method conduces to not only parallel operations of excavation, support and anchoring, but also to rapid excavation and the safe production of roadways, providing fresh ideas for the advance support for fully mechanized roadways.
ISSN:2076-3417
2076-3417
DOI:10.3390/app122412728