作　　者： ; ; ; ;

机构地区： 华南理工大学

出　　处： 《长江科学院院报》 2005年第1期42-45,共4页

摘　　要： 运用电镜对三峡工程大坝混凝土所用花岗岩骨料进行微结构分析,结果表明三峡花岗岩与外界环境发生了显著的能量交换和物质交换,晶体中贮藏了较大能量在点阵中,有可能是潜在碱活性结构的原因。由于花岗岩承受8.3亿年的重力作用和构造动力作用,在岩石微结构中,几乎见不到结构孔隙,水泥石中碱溶液只能缓慢扩散,缓慢反应形成微薄的反应环,所以其膨胀量微弱,须待长期量变积累才能显现膨胀变化。 Electro-microscope test methods including SEM and TEM were used to study the microstruture of the granite in the Three Gorges Project(TGP) area. The observed results showed that the granite in the TGP area and surrounding environment has generated distinct energy and substance transformations, and that the quartz crystal has stored high energy in lattices due to probably existing an alkali-activity structure. For the granite has borne a gravity action and a rock structural dynamic action for (8.3) hundred-million years,the structural pore almost was not be seen, and the alkali-solution expanded slowly, forming a thin reflection ring. The expansion of the granite is very small, so the appearance of its expansion sudden change will last a very long-term accumulation process.

关 键 词： 三峡工程 混凝土 花岗岩 石英 位错 碱活性

领　　域： [水利工程]