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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.14 No.3
- 발행연도
- 2020.5
- 수록면
- 431 - 446 (16page)
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초록· 키워드
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Underground mined-out voids need to be backfilled for the stability of the surrounding rock and also to increase ore extraction from adjacent pillars. One of the relatively newer means is cemented paste backfilling, which has been extensively adopted in underground mining operations around the world. During and after the placement of cemented paste backfill (CPB) into stopes, complex multiphysics (thermal, hydraulic, mechanical and chemical) processes take place in the large mass of CPB and could affect its consolidation behavior. An analysis of the consolidation process in CPB mass is essential for the assessment of CPB behavior and cost-effective designs in practice. In this paper, multiphysics simulation of the consolidation behavior of CPB mass is performed under different conditions, including the mixture recipe, and backfilling, drainage, surrounding rock and curing conditions. It is found that the in situ consolidation behavior of CPB structures is a function of the multiphysics processes that occur in the cementing backfill mass. Moreover, the rock mass conditions, including the geometry and rock wall roughness, influence the consolidation process of CPB structures. Cement content, curing time and backfilling rate play a crucial role in the consolidation process of CPB. The obtained results can facilitate a better understanding of the consolidation behaviour of CPB for backfill designers and engineers, and thus contribute to enhance the engineering of CPB structures.
목차
Abstract
1. Introduction
2. Mathematical models
3. Model Validation
4. Model Applications
5. Conclusions
References
참고문헌 (47)
참고문헌 신청
Ai, Z. Y. / 2015 / Multi-dimensional consolidation of layered poroelastic materials with anisotropic permeability and compressible fluid and solid constituents / Acta Geotechnica 10(2):263~273
Belem, T. / 2004 / Measurement and prediction of internal stresses in an underground opening during its filling with cemented fill / Proceedings of 5th international symposium on ground support in mining and underground construction :28~30
Benzaazoua, M. / 2004 / A contribution to understanding the hardening process of cemented / Minerals Engineering 17(2):141~152
Biot, M. A. / 1955 / Theory of elasticity and consolidation for a porous anisotropic solid / Journal of Applied Physics 26(2):182~185
Ceccato, F. / 2016 / Numerical study of partially drained penetration and pore pressure dissipation in piezocone test / Acta Geotechnica
Belem, T. / 2004 / Measurement and prediction of internal stresses in an underground opening during its filling with cemented fill / Proceedings of 5th international symposium on ground support in mining and underground construction :28~30
Benzaazoua, M. / 2004 / A contribution to understanding the hardening process of cemented / Minerals Engineering 17(2):141~152
Biot, M. A. / 1955 / Theory of elasticity and consolidation for a porous anisotropic solid / Journal of Applied Physics 26(2):182~185
Ceccato, F. / 2016 / Numerical study of partially drained penetration and pore pressure dissipation in piezocone test / Acta Geotechnica
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UCI(KEPA) : I410-ECN-0101-2020-532-000682145