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本仪器由瑞士联邦苏黎世综合科技大学公路、铁路及岩石工程研究所(简称ISETH)研制,瑞士Solexperts公司生产,中国科学院武汉岩土力学所于1984年购置了一套。在引进此设备之前,该所根据其基本原理,利用国产元器件及相应仪表,研制成功了一套相似的仪器设备。一、基本原理这是一种手提式高精度变形测量仪器,用以测定钻孔中相距1m的两点间的位移差。因此,也可以说是一种手提式应变计,它能准确地测定钻孔轴向的应变分布规律(图1)。
The instrument was developed by the Institute of Highways, Railways, and Rock Engineering (ISETH) of the Swiss Federal University of Science and Technology in Switzerland and manufactured by Solexperts of Switzerland. The Institute of Rock and Soil Mechanics of the Chinese Academy of Sciences purchased a set in 1984. Prior to the introduction of this equipment, the institute developed a similar set of equipment based on its basic principles, using domestically produced components and corresponding instruments. First, the basic principle This is a portable high-precision deformation measurement instrument used to determine the difference in displacement between two points in the borehole 1m away. Therefore, it can also be said to be a hand-held strain gauge, which can accurately determine the strain distribution in the axial direction of the borehole (Fig. 1).