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Study on the Effect of Bolt Anchorage in Deep Roadway Roof Based on Anchorage Potential Design Method

  • Hongchao LiEmail author
  • Wei Zhao
  • Kai Zhou
  • Yanan Liu
  • Xinglong An
  • Ge Gao
Original Paper
  • 53 Downloads

Abstract

Based on the analysis of bending damage of roadway roof, a design method of roof bolting support by using anchorage potential design method is put forward. The method is then applied to numerical simulation of roadway anchorage parameters and support effect. The effect of numerical simulation on supporting schemes was verified through laboratory tests, and the optimal support scheme for roadway was determined. Field test results show that roadway deformation from roof to floor in the optimal support scheme is 210 mm, which is within the control range. The anchorage forces of bolts and cables are within reasonable load coordination and prestress coordination area and roadway stability is good. The amount of bolting material for roadway roof is reduced by 20% compared with the traditional design.

Keywords

Potential of roof anchorage Numerical simulation Parameters of bolt anchoring On-site monitoring 

Notes

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Hongchao Li
    • 1
    Email author
  • Wei Zhao
    • 1
  • Kai Zhou
    • 1
  • Yanan Liu
    • 2
  • Xinglong An
    • 3
  • Ge Gao
    • 1
  1. 1.College of Mining and Safety EngineeringShandong University of Science and TechnologyQingdaoChina
  2. 2.College of Economics and ManagementShandong University of Science and TechnologyQingdaoChina
  3. 3.Shandong Dingan Testing Technology Co., LtdJinanChina

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