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STUDY ON 3D GEOLOGICAL MODELING IN UNDERGROUND POWERHOUSE ENGINEERING
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Abstract The method of 3D geological model for underground powerhouses is presented，which includes 3D strata information，construction excavation，3D caverns，faults，distribution of underground water，characteristic monitoring instruments，etc.. A new interpolation algorithm，which is based on drilling points and key points on section lines，is presented. A new cavern generation method for any arbitrary two plane polygons is also presented，and the cross-cut problem for any two underground caverns is also resolved. At last，the methods are applied to Xiaowan Hydropower Station project successfully.
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Received: 10 May 2006
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