ANALYTICAL RESULTS OF THE STABILITY OF SOME LIMESTONE ISLANDS IN HA LONG BAY, QUANG NINH PROVINCE OF VIETNAM, A WORLD NATURAL HERITAGE
DOI:
https://doi.org/10.26842/binhm.7.2019.15.4.0455Keywords:
Ha Long bay, Limestone, Plane failure, Stability, VietnamAbstract
The analytical results of the failure types of six limestone islands in the Ha Long bay of Vietnam have been identified. The calculated results of safety factor for 03 plane failure blocks lie within 0.9 and 2, have high potential failure. The analytical results have been also simulated these islands in three-dimensional space and have been also analyzed their potential failure on the fracture surfaces. The results obtained in this paper have important significance for planning and development of the Ha Long bay area, as World Natural Heritage, Quang Ninh province of Vietnam.
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References
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Hoek, E. and Bray, J. 2004. Rock slope engineering, 4th IMM, London, 431 pp.
Lam, D. D. and Boyd, W. E. 2002. Document on the sea level in the middle - late Holocene in Ha Long bay. Journal of Geology, A/270: 1-7. (In Vietnamese).
Long, H. P. 2012. Tourism impacts and support for tourism development in Ha Long Bay, Vietnam: An examination of residents’ perceptions. Asian Social Science, 8 (8): 28-39.
Phach, P. V., Yem, N. T. and Chinh, V. V. 1996. Geodynamic situation in Neotectonic and recent period on Territory of Vietnam. Geology-Resource, National centre for Natural science and Technology institute of Geology, p 101-111. (In Vietnamese).
Rangin, C., Klein, M., Roques, D., Le Pishon, X. and Trong, L. V. 1995. The Red River Fault System in the Tonkin Gulf, Vietnam. Tectonophysics, 243: 209-222.
Tapponnier, P., Peltzer, G. and Armijo, R. 1986. On the mechanics of the collision between India and Asia. In: Coward, M. P., Ries, A. C. (Eds.), Collision Tectonics. Geological Society of London, Special Publication, 19, p 115-157.
Tapponnier, P., Peltzer, G., Le Dain, A. Y., Armijo, R. and Cobbold, P. 1982. Propagating extrusion tectonics in Asia: New insights from simple experiments with plasticine. Geology, 10: 611-616.
Thanh, T. D. 2008. Criteria for evaluating the natural wonders of Ha Long bay. Cultural Heritage Information, 31: 12-15. (In Vietnamese).
Thanh, T. D. 2012. Geological wonders of Ha Long bay. Vietnam Journal of Earth Sciences, 2: 162-172. (In Vietnamese).
Thanh, T. D. and Tony, W. 2001. The outstanding value of geology of Ha Long bay. Advance in Natural Sciences, 2-3: 89-99. (In Vietnamese).
Thanh, P. T., Thinh, P. H. and Ha, N. V. 2018. Rock slope failure blocks and their relation to tectonic activity: A case study in 3B highway, Xuathoa area, Backan province, Vietnam. Bulletin of the Iraq Natural History Museum, 15(2): 207-223.
Thanh, T. D., Tri, T.V., An, L. D., Anh, L. H. and Tony, W. 2004. Ha Long bay, a heritage of geology and geomorphology of the world. Cultural heritage, p 81-84. (In Vietnamese).
Thanh, P. T., Duy, N. T., Thao, N. T. P., Thanh, N. X. and Dat, N. T. 2017. Some results of fracture orientation analysis and its relationship with rockslide on the carbon-permi limestone in Ha Long bay area. International conference on Geo-spatial Technologies and Earth resources, p 521-528.
Van, T. T. 2012. Research in geological processes, modern geodynamics for observation of changes in caves and islands in Ha Long bay. Vietnam Institute of Geosciences and Mineral Resources (VIGMR), 254 pp. (In Vietnamese).
Vu, N. G. 2003. Structural evolution of the block 102 and 106 Song Hong basin-implication for hydrocarbon potential. Proceedings of conference on Vietnam petroleum institute: 25 years of development and achievements, p 284-309. (In Vietnamese).
Yem, N. T. 1991. Main features of modern geodynamic in the North Vietnam. Geology-Resource, National centre for Natural science and Technology institute of Geology, p7-10. (In Vietnamese).
