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Geotechnical and Geological Engineering

, Volume 37, Issue 1, pp 389–400 | Cite as

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

  • Yong-qiang Zhao
  • Fu-lian He
  • Jing-ke Wu
Original Paper
  • 47 Downloads

Abstract

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.

Keywords

Cable-truss structure Roadway support Constant resistance Roof deformation 

Notes

Acknowledgements

The Project Supported by National Natural Science Foundation of China No. 51574243. Supported by the Yue Qi Distinguished Scholar Project (800015Z1138), China University of Mining & Technology, Beijing. Supported by “the Fundamental Research Funds for the Central Universities” (800015J6).

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.College of Resources and Safety EngineeringChina University of Mining and TechnologyBeijingPeople’s Republic of China
  2. 2.Beijing Key Laboratory for Precise Mining of Intergrown Energy and ResourcesChina University of Mining and TechnologyBeijingPeople’s Republic of China
  3. 3.Faculty of Architecture and Civil EngineeringHuaiyin Institute of TechnologyHuaianPeople’s Republic of China

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