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FLEM FOR GROUND SUBSIDENCE CALCULATION AND DATA FIELD EXPRESSION MODEL BASED ON GIS
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Abstract GIS building up by geoscience digitalization and visualization is widely used in geotechnical engineering. Ground subsidence due to underground tunnel excavation and mining is a kind of drastic engineering disaster. It is valuable to conduct real-time prediction and evaluation of ground subsidence and its damage based on GIS，GPS，and RS technology. This paper provides a semi-analytic method，finite layer element method (FLEM)，which is used in underground mining subsidence calculation and geological body stress analysis and gives out the displacement pattern，the strain matrix，the elastic matrix，the stiffness matrix of the element and the stress matrix of this method. It also presents the data model for this method integrated with GIS and data organization approach. Meanwhile，the multilingual integrated pattern and data visualization method based on GIS subsidence damage evaluation system are proposed；and the reliability of the method through the application of engineering examples is verified.
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Received: 17 January 2004
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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