China Safety Science Journal ›› 2024, Vol. 34 ›› Issue (5): 111-121.doi: 10.16265/j.cnki.issn1003-3033.2024.05.1134

• Safety engineering technology • Previous Articles     Next Articles

Development on physical model test study on soil nailing supporting slope

CHENG Gang1,2(), ZHANG Haoyu1, WANG Ye3,**(), LI Gangqiang4, YOU Qinliang1   

  1. 1 School of Computer Science, North China Institute of Science and Technology, Langfang Hebei 065201, China
    2 Engineering Research Center of Zero-carbon and Negative-carbon Technology in Depth of Mining Areas, Ministry of Education,China University of Mining and Technology, Xuzhou Jiangsu 221116, China
    3 Graduate Department, North China Institute of Science and Technology, Langfang Hebei 065201, China
    4 School of Mine Safety, North China Institute of Science and Technology, Langfang Hebei 065201, China
  • Received:2023-10-14 Revised:2024-01-18 Online:2024-05-28 Published:2024-11-28
  • Contact: WANG Ye

Abstract:

In order to improve slope stability under the combined action of engineering disturbance and natural factors, and clarify the process and characteristics of slope soil nailing under different loading conditions, the optimal support mode and layout technology suitable for the actual working conditions were selected to ensure the intrinsic safety of the slope structure system. Firstly, the physical model test process and results of soil nailing support under three types of static, vibration, and centrifugal forces were systematically elaborated. Secondly, the characteristics and applicability of typical slope support technologies and new slope support methods were compared as well as analyzed. Finally, through physical model tests under complex environmental effects, the deformation and failure mechanisms of three special slopes, namely submarine slope, typhoon rainstorm slope and high-speed and long-distance landslide were explored. The results show that soil nailing has good applicability in all kinds of slope support, but the reliability and safety factor of slope support under complex and special environments still need to be improved. Therefore, in practice, it is necessary to integrate new materials and processes to conduct research on composite support structures. At the same time, it is necessary to strengthen the selection of similar materials, innovative observation methods, and special environmental simulation research in physical model experiments, aiming to improve the high degree of restoration of monitoring data and achieve the full process safety guarantee of slope systems.

Key words: soil nailed slope, physical modeling test, slope deformation destruction, special environment, rainfall effect

CLC Number: