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首页> 外文期刊>Pure and Applied Geophysics >Permeability of Granite Including Macro-Fracture Naturally Filled with Fine-Grained Minerals
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Permeability of Granite Including Macro-Fracture Naturally Filled with Fine-Grained Minerals

机译：花岗岩的渗透性包括宏观骨折，天然填充细粒粒细胞

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摘要

Abstract Information on the permeability of rock is essential for various geoengineering projects, such as geological disposal of radioactive wastes, hydrocarbon extraction, and natural hazard risk mitigation. It is especially important to investigate how fractures and pores influence the physical and transport properties of rock. Infiltration of groundwater through the damage zone fills fractures in granite with fine-grained minerals. However, the permeability of rock possessing a fracture naturally filled with fine-grained mineral grains has yet to be investigated. In this study, the permeabilities of granite samples, including a macro-fracture filled with clay and a mineral vein, are investigated. The permeability of granite with a fine-grained mineral vein agrees well with that of the intact sample, whereas the permeability of granite possessing a macro-fracture filled with clay is lower than that of the macro-fractured sample. The decrease in the permeability is due to the filling of fine-grained minerals and clay in the macro-fracture. It is concluded that the permeability of granite increases due to the existence of the fractures, but decreases upon filling them with fine-grained minerals.
机译：摘要关于岩石渗透性的信息对于各种地理工程项目至关重要，例如放射性废物，碳氢化合物提取和自然灾害风险减缓的地质处理。研究骨折和毛孔如何影响岩石的物理和运输性质尤为重要。通过损伤区渗透地下水，用细粒矿物填充花岗岩中的骨折。然而，尚未研究具有天然填充细粒粒矿物质的骨折的岩石的渗透性尚未得到研究。在本研究中，研究了花岗岩样品的渗透，包括填充有粘土和矿物静脉的宏骨破裂。用细粒矿物静脉的花岗岩的渗透性与完整样品的渗透性良好，而具有填充有粘土的宏观骨折的花岗岩的渗透性低于宏裂缝样品的花岗岩的渗透性。渗透率的降低是由于宏观骨折中细粒矿物和粘土的填充。结论是，由于裂缝的存在，花岗岩的渗透性增加，但在用细粒矿物质填充它们时降低。

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