CAJ | 학술논문

隧道开挖过程中存在应力释放问题，所以正确模拟围岩荷载释放率是数值分析的关键．以往研究者模拟围岩释放率采用经验法或者二维模拟分析，而隧道开挖是空间问题．因而对于复杂应力状态条件下的隧道开挖会造成很大的误差．因此，本文根据围岩参数三维数值模拟隧道全断面开挖确定荷栽释放率．与部分以往研究结果不同，拱底出现隆起，释放率出现负值．
수도개알과정중존재응력석방문제，소이정학모의위암하재석방솔시수치분석적관건．이왕연구자모의위암석방솔채용경험법혹자이유모의분석，이수도개알시공간문제．인이대우복잡응력상태조건하적수도개알회조성흔대적오차．인차，본문근거위암삼수삼유수치모의수도전단면개알학정하재석방솔．여부분이왕연구결과불동，공저출현륭기，석방솔출현부치．
Correct simulation of surrounding rock load release rate is a key to numerical analysis due to the existence of stress release in the course of tunnel excavation. Empirical method or two-dimensional simulation analysis is employed to simulate surrounding release rate in the previous research despite the fact that tunnel excavation is a matter of space. Consequently, serious errors are more likely to arise from tunnel excavation under complex stress. As a result, this paper aims to determine the accurate load release rate based on three-dimensional numerical simulations of full-face tunnel excavation. Different from the previous results, this study shows that the tunnel bottom heaves and the release rate is negative.