【摘要】 分析了常规土工模型以及离心模型试验的优缺点,例如前者难以满足土体应力水平物理相似,而后者虽然可以满足模型和原型的几何与物理相似,但是普遍使用率低、造价贵、操作困难,且不适宜用于原生植被生态护坡机理试验研究。最近出现的磁力地质模型只考虑固相的自重应力相似,不能满足液相及水压力相似。因此,本文把渗透力和磁场力联合应用于渗透性较好的粘性粗粒土坡积体模型,提出了双向渗透力以及顺坡向渗透力联合垂直坡面磁场力的土坡模型试验方法和专利技术,并对其力学特性相似进行了分析,对实验过程进行了数值模拟。更多还原

【Abstract】 In traditional soil model tests,the stress level cannot be multiplied to reach in-situ stress level. In-situ stress level can be simulated in centrifuge model so that physical and geometric similarity of soil model can be satisfied. However,centrifuge models are very expensive and their operation is complicated,so this technique is used only in few institutes. In-situ vegetation of the slope cannot be simulated in small centrifuge model box due to its large root system. Magnetic geology model has been used to simulate skeleton stress level; however it cannot simulate pore water pressure level. As a result of the above analysis,the test methodology for seepage-magnetic combined stress model as soil slope model is proposed and analytically verified. Due to combination of magnetic stress and seepage stress,the stress levels of both soil skeletons and pore water are maintained similar to the in situ value.更多还原