地质力学模型试验过程中关键技术研究

基于地质力学模型试验,分别从地质力学模型试验相似比尺的选择、相似材料的选择、模型的制作、模型的开挖与支护和数据的采集与分析5个部分阐述了试验过程中的关键技术问题.结合山东大学岩土中心的大型三维模型试验,重点分析了相似材料的选择、模型制作过程中的注意事项,包括模型试验台的设计、测点的布置、应变片的选择与粘贴、温度补偿与连接导线、模型的堆砌和应变块的埋设.这些关键技术影响着模型试验的成败,因此模型试验过程中的关键技术的研究对于地质力学模型试验具有一定的指导意义.

Study on Key Technology in Geo-Mechanical Model Test Process

According to geo-mechanical model test process, the key technologies in experiment process are introduced in fire parts, including simulation scale selection, simulation material selection, model facture, excavation and support, and data collection and analysis.In this paper, with large 3D model test of Shan Dong University as an example, the simulation material selection and model facture process are mainly analyzed. Issues concerned with the model facture process include the design of model test-bed, layout of measure points, strain selection and sticking, temperature compensation and linking wire, model making and strain brick laying. These key technologies affect the model test results and thus their research offers some guidance to geo-mechanical model test.