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논문 기본 정보

자료유형
학술저널
저자정보
Wang, Shuhong (Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, School of Resources and Civil Engineering, Northeastern University) Huang, Runqiu (State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology) Ni, Pengpeng (GeoEngineering Centre at Queen's-RMC, Department of Civil Engineering, Queen's University) Jeon, Seokwon (Rock Mechanics and Rock Engineering Laboratory, Department of Energy Systems Engineering, Seoul National University)
저널정보
테크노프레스 Geomechanics & engineering Geomechanics & engineering 제12권 제4호
발행연도
2017.1
수록면
723 - 738 (16page)

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Rock is a heterogeneous material, which introduces complexity in the analysis of rock slopes, since both the existing discontinuities within the rock mass and the intact rock contribute to the degradation of strength. Rock failure is often catastrophic due to the brittle nature of the material, involving the sliding along structural planes and the fracturing of rock bridge. This paper proposes an advanced discretization method of rock mass based on block theory. An in-house software, GeoSMA-3D, has been developed to generate the discrete fracture network (DFN) model, considering both measured and artificial joints. Measured joints are obtained from the photogrammetry analysis on the excavation face. Statistical tools then facilitate to derive artificial joints within the rock mass. Key blocks are searched to provide guidance on potential reinforcement measures. The discretized blocky system is subsequently implemented into a discontinuous deformation analysis (DDA) code. Strength reduction technique is employed to analyze the stability of the slope, where the factor of safety can be obtained once excessive deformation of slope profile is observed. The combined analysis approach also provides the failure mode, which can be used to guide the choice of strengthening strategy if needed. Finally, an illustrated example is presented for the analysis of a rock slope of 20 m height inclined at $60^{\circ}$ using combined GeoSMA-3D and DDA calculation.

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