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Creep Behavior of Unconsolidated Rock with Mathematical Concept Solution

수학적 개념 해를 적용한 미고결 암석의 Creep거동 해석

  • 장명환 (한국광물자원공사 자원개발기술팀)
  • Received : 2018.01.02
  • Accepted : 2018.01.19
  • Published : 2018.02.28

Abstract

Burger's model was used to analyze creep characteristics of unconsolidated rock. Burger's model should determine four physical parameters from two pairs of data. In this study, physical parameters of Burger's model were determined by applying mathematical concept solution. Creep was accelerated for three years using the determined physical parameters of the Burger's model for unconsolidated rocks. As a result, the creep behavior showed a continuous deformation behavior without convergence. Therefore, in this mine, it is analyzed that the application of U-Beam is more appropriate than roofbolt in terms of stability.

미고결 암석에 대한 Creep 특성을 분석하고자 Burger 모델을 이용하였다. Burger 모델은 자료쌍 D(u,t)으로부터 4개의 역학적 매개변수를 결정 하여야 한다. 본 연구에서는 수학적 개념 해를 적용하여 매개변수를 결정 하였다. 미고결 암석에 대한 Burger 모델의 결정된 매개변수를 이용하여 Creep을 3년간 가속시켰다. 그 결과 Creep 거동은 수렴이 되지 않고 지속적인 변형거동을 보였다. 따라서 본 광산에서는 Roofbolt 보다 U-Beam 적용이 안정성 측면에서 더 적합 할 것으로 분석 되었다.

Keywords

Acknowledgement

Grant : 미고결 점토질 연약암반의 물리.역학적 특성을 고려한 채광설계 연구

Supported by : 한국광물자원공사

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