期刊
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
卷 61, 期 -, 页码 231-243出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijrmms.2013.03.003
关键词
Geomechanical model test; Arch dam; Stability; Rock mass; Block masonry
资金
- State Key Laboratory of Hydroscience and Engineering of Hydroscience [2013-KY-2]
- China National Funds for Distinguished Young Scientists [50925931]
Rock mass deformation and strength property simulation plays a key role in the rupture tests of arch dam geomechanical model. Subject to the limit of geometry scale, usually the simulation of tectonic discontinuities, such as faults, disturbed belts, crush belts and weak interlayer were ignored as safety buffer, which may yield overstated safety factors. In this paper, small block masonry technique and low strength binder invented make the simultaneous simulation of the rock mass and tectonic discontinuities available, which is more coincident with real engineering conditions. Based on the material test of blocks and binder, the small blocks masonry technique has been successfully applied in the rupture test of Xiluodu arch dam. With the assistance of high-accuracy monitoring and measuring system, the stress (strain) and displacement distribution of the dam, abutments and rock foundations are obtained. By analyzing these monitoring results, the failure process, mode and mechanism of the dam body and abutments are derived for further identification of weakness. At last, the comparative analysis with other arch dam geomechanical rupture test results yields the evaluation of the dam's global stability and necessary reinforcement measures. (C) 2013 Elsevier Ltd. All rights reserved.
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