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金属矿山 ›› 2011, Vol. 40 ›› Issue (1): 15-18.

• 采矿工程 • 上一篇    下一篇

用于FLAC 3D力学分析的矿床块段模型优化建模技术研究

寇向宇,贾明涛,王李管,吴霞   

  1. 中南大学
  • 出版日期:2011-01-15 发布日期:2011-01-06
  • 基金资助:

    国家自然科学基金重大项目(编号:50490270)

Research on Optimized Modeling Technology of Ore Block with FLAC 3D Mechanics Analysis

Kou Xiangyu,Jia Mingtao,Wang Liguan,Wu Xia   

  1. Central South University
  • Online:2011-01-15 Published:2011-01-06

摘要: FLAC3D主要是模拟计算地质材料和岩土工程的力学行为,可以对矿山开采中产生的空区及地表移动问题进行数值模拟,并进行稳定性分析。但对于复杂的工程和地质条件,FLAC3D本身的前处理能力不强,建立的模型不能准确反映实际情况,要做大量简化。因此,探讨依据FLAC3D网格划分的原则和三维矿床软件SURPAC构建块段模型的方法,对用于力学分析的块段模型构建的步骤、原则等进行研究,使建立的模型得到优化,使其能够直接作为FLAC3D分析的前处理模型进行模拟计算,并结合弹性力学的原理验证了其正确性,同时用优化后的前处理模型结合云南某铜矿的实际进行力学分析,验证了该方法的可行性和准确性。

关键词: FLAC3D, SURPAC, 前处理, 块段模型, 优化

Abstract: FLAC3D is mainly the mechanics behaviors of simulating the geo-materials and geotechnical engineering, and can realize a numerical simulation on movement of empty area and surface in mines, and the corresponding stability analysis. But the pre-processing ability of FLAC3D was weak and the model established does not accurately reflect the actual situation in complex engineering and geological conditions. So it should be simplified. Therefore, based on the principle of FLAC3D mesh and three-dimensional building blocks of deposits Software SURPAC segment model approach, the block segment of model-building steps and principle for mechanical analysis are studied so as to optimize the model. It can be directly used as pre-treatment model simulation of FLAC3D analysis, and its correctness be verified combining with the principle of elasticity. Meanwhile, the mechanical analysis by the optimized pre-treatment model combining with the actual situation of a copper mine in Yunnan verifies the feasibility and accuracy of the method.

Key words: FLAC3D, SURPAC, Pre-treatment, Block model, Optimization