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| STABILITY ANALYSIS OF LOOSE SURROUNDING ROCK WITH SHALLOW OVERBURDEN BY A DISCRETIZATION FINITE ELEMENT METHOD |
| LI Ning，ZHU Caihui，YAO Xianchun，HE Min |
| (Institute of Geotechnical Engineering，Xi'an University of Technology，Xi'an，Shaanxi 710048，China) |
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Abstract The caving mechanism is simulated by FEM and DFEM to simulate ground arch respectively based on the inlet and outlet of the diversion tunnel of Ludila hydropower station. It is close to actual situation by combining the characteristics of caving load of loose medium and FEM which can consider the interaction of supporting structure and surrounding rock. The results show that the caving mechanism of underground cavern of loose medium with shallow overburden in lower stress area is simulated well by proposed DFEM，and it is close to practical engineering and important to the design and analysis of engineering.
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Received: 07 August 2008
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MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
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