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Study on the stability of rock mass around large underground cavern based on numerical analysis: A case study in the Cai Mep project
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Study on the stability of rock mass around large underground cavern based on numerical analysis: A case study in the Cai Mep project
Thanh Nhung
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Geotechnical problems are complicated to the extent and cannot be expected in other areas since non-uniformities of existing discontinuous, pores in materials and various properties of the components. At present, it is extremely difficult to develop a program for tunnel analysis that considers all complicated factors. | 50 Journal of Mining and Earth Sciences Vol. 63 Issue 3a 2022 50 - 58 Study on the stability of rock mass around large underground cavern based on numerical analysis A case study in the Cai Mep project Hung Trong Vo Kien Van Dang Anh Ngoc Do Thai Ngoc Do Faculty of Civil Engineering Hanoi University of Mining and Geology Vietnam ARTICLE INFO ABSTRACT Article history Geotechnical problems are complicated to the extent and cannot be Received 08th Aug. 2021 expected in other areas since non-uniformities of existing discontinuous Accepted 24th Jan. 2022 pores in materials and various properties of the components. At present Available online 31st July 2022 it is extremely difficult to develop a program for tunnel analysis that Keywords considers all complicated factors. However tunnel analysis has made Cai Mep remarkable growth over the past several years due to the development of numerical analysis methods and computer development given the Large Cavern situation that it was difficult to solve the formula of elasticity Numerical analysis viscoelasticity and plasticity for the dynamic feature of the ground when Stability the constituent laws yielding conditions of ground materials geometrical Surrounding Rock. shape and boundary conditions of the structure were simulated in the past. Actual problems have been successfully analyzed in addition to simple analysis and more reasonable design and construction management materials have been obtained. The stability of rock mass around an underground large cavern is the key to the construction of large-scale underground projects which have to divide into different parts stages. Rock bolt and shotcrete are important means to ensure the stability of the underground cavern. The objective of the paper is to evaluate the stability of a large cavern in the Cai Mep project in Ba Ria- Vung Tau by numerical method. The results from numerical simulations show that the stability of rock support of the cavern is in fair agreement with the
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