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Mechanics in Engineering ›› 2018, Vol. 40 ›› Issue (6): 613-624.doi: 10.6052/1000-0879-18-195

• Review •     Next Articles

RESEARCH PROGRESS OF LOCKED-IN STRESS IN ROCKS1)

GENG Hansheng*,2), XU Hongfa*,3), CHEN Xiao*, BAI Zhun   

  1. *State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, National Defense Engineering College, Army Engineering University of PLA, Nanjing 210007, China;
    Department of Military Facilities, Army Logistics University of PLA, Chongqing 401311, China
  • Received:2018-05-17 Online:2018-12-15 Published:2019-01-02

Abstract:

The influence of the locked-in stress on the rock mechanical properties cannot be ignored. Since Chen Zongji proposed the definition of the locked-in stress in rocks, there were very few related studies. Starting from the definition, combined with the current development of the rock mechanics, this paper expands the concept of the locked-in stress,in a new definition of the locked-in stress in rocks. The forms of the stress in accordance with the new definition of the locked-in stress in the rock mechanics research are classified. The variation law of various kinds of locked-in stress and its empirical formula are summarized. The correlation between the locked-in stress and the excavation of the underground engineering and its influence are discussed. This paper provides a new way to explain the special phenomenon of deep rock mechanics.

Key words:

rock mechanics|locked-in stress|deep rock mass|underground excavation

CLC Number: 

  • TU458