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断层裂隙发育分布规律对岩体中地下水渗流及溶质迁移影响研究——以普朗铜矿首采区3720中段为例
Impact of fault fracture development and distribution regularity on groundwater flow and solute transport in rock mass as exemplified at 3 720m of the first mining region of Pulang Copper Mine
【摘要】 以普朗铜矿首采区3720中段为研究实例,统计分析研究区断层裂隙发育分布规律,建立受断层裂隙影响表现出强烈非均质性的水文地质数值模型,分别模拟分析65°与307°方向发育裂隙对溶质迁移影响.结果表明:具有强渗透性导水裂隙的岩体,有利于溶质迁移,隔水断层抑制溶质迁移;裂隙发育与地下水流方向一致时,有利于溶质沿着水流方向迁移;裂隙发育与地下水流方向相交时,受裂隙影响形成的强透镜体改变地下水流方向,从而改变溶质迁移方向.
【Abstract】 Statistical analysis of development and distribution of fault fissures at 3720 min the first mining region of Pulang Copper Mine was performed.Strongly heterogeneous hydro-geological numerical models influenced by fault fissures were set up.Effects of developmental distribution cracks on solute transport in 65°and 307°directions were simulated.Rock mass with strong permeability water-conducting fissure was found favorable for solute transport,water-blocking fault was found to inhibit solute transport.The direction of fracture development was found consistent with direction of groundwater flow,which would be beneficial for solute transport along water-flow direction.When direction of fracture development intersects with that of groundwater flow and the strong lens affected by fracture changes direction of groundwater flow,direction of solute transport is changed.
【Key words】 fault fissure; distribution regularity; heterogeneity; solute transport;
- 【文献出处】 北京师范大学学报(自然科学版) ,Journal of Beijing Normal University(Natural Science) , 编辑部邮箱 ,2019年04期
- 【分类号】P641.463;X131.2
- 【下载频次】267