A New Cable-Truss Structure for Roadway Driving Next to Goaf

The roof deformation and damage of roadway driving next to goaf in the vertical and horizontal directions are serious, the process of horizontal squeezing–expansion is difficult to be controlled using the traditional anchor truss structure. To solve this problem, a new type of cable-truss structure...

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Bibliographic Details
Published in:Geotechnical and geological engineering 2019-01, Vol.37 (1), p.389-400
Main Authors: Zhao, Yong-qiang, He, Fu-lian, Wu, Jing-ke
Format: Article
Language:English
Subjects:
Accidents
Anchors
Civil Engineering
Compressing
Deformation
Deformation effects
Deformation mechanisms
Driving
Earth and Environmental Science
Earth Sciences
Geotechnical Engineering & Applied Earth Sciences
Hydrogeology
Laboratory tests
Load bearing elements
Mechanical properties
Multinational space ventures
Original Paper
Roads
Space shuttle
Structural damage
Terrestrial Pollution
Trussed structures
Trusses
Waste Management/Waste Technology
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Summary:The roof deformation and damage of roadway driving next to goaf in the vertical and horizontal directions are serious, the process of horizontal squeezing–expansion is difficult to be controlled using the traditional anchor truss structure. To solve this problem, a new type of cable-truss structure was designed to effectively control the deformation and damage of the roof along the vertical and horizontal directions. Besides, it had the function of horizontal bidirectional constant resistance. The mechanism of the structure is explained first. Then, the basic mechanical properties obtained through laboratory tests are presented. Finally, field practice is discussed. The results show that the new cable-truss structure has a load bearing force acting on its combination beam according to the horizontal movement of roadway roof. It can also adjust its length to prevent or adapt to the horizontal squeezing-expansion movement of roof, which ensures that the combination beam will not be distorted, torn, or broken. Thus, this new cable-truss structure can effectively mitigate the roof-caving accidents.
ISSN:0960-3182
1573-1529
DOI:10.1007/s10706-018-0618-4