利用新型两用多点位移计测算围岩深部位移的方法研究

阐述了巷道围岩深部及表面位移的测量原理,提出了一体化测量巷道围岩深表位移的两用多点位移计,并应用于淮南潘一东矿沿空留巷支护设计中,与传统测量手段进行对比,其避免了因不同点处围岩位移不同步及受钻孔影响导致测量错误的现象。工程应用表明,其所测数据能够真实确定深部围岩零位移点,为支护设计提供重要参考。

A Method of Measuring and Calculating Displacement of Deep Surrounding Rock by A New Combination Multi-point Extensometer

This article illustrates the measuring principle of deep and surface displacements of surrounding rock of roadway, analyses the disadvantages of two kinds of conventional measuring methods，proposes a new combination multi-point displacement meter which can comprehensively measure deep and surface displacement of surrounding rock, improve the measuring precision and validity ,reduce observation station, and based on this new instrument illustrates a method of measuring and calculating the deep surrounding rock separation , real displacement and the ratio of deep and surface displacement, which provides scientifical and valid data for researching the movement rule of surrounding rock and designing roadway support reasonably.