论文部分内容阅读
针对多点变位计和滑动测微计在监测地下洞室围岩变形方面存在轴向位移分布连续性不足和无法实现自动化的问题,提出了将光纤光栅位移传感器通过组装成串应用在围岩变形连续监测的方法。该方法可准确得到仪器埋设沿线任一测点的监测量,由于光纤光栅位移计组具有精度高的特性,测得的围岩位移变化与洞室扩挖施工关系密切,与多点变位计监测结果总体变形规律基本一致,但光纤光栅位移计组能够监测到整个大尺度的监测线中任意间距的轴向位移分布,取得的成果信息量更大更为直观。作为对光纤光栅位移计在岩土工程变形监测中的应用探索,具有一定借鉴意义。
Aiming at the problem of multi-point displacement meter and sliding micrometer in monitoring the surrounding rock deformation of underground caverns, the continuity of axial displacement distribution is not enough and the automation can not be realized. The problem that the fiber grating displacement sensor is applied to the surrounding rock Methods of continuous deformation monitoring. The method can accurately obtain the monitoring amount of any measuring point buried along the instrument. Because of the high precision of the FBG displacement meter, the measured displacement of surrounding rock is closely related to the excavation of the cavern, and the multi-point displacement meter The overall deformation of the monitoring results are basically the same, but the FBG displacement meter can monitor the axial displacement distribution of arbitrary spacing in the monitoring line of the whole large scale, and the obtained information of the results is larger and more intuitive. As a research on the application of fiber grating displacement meter in geotechnical engineering deformation monitoring, it has some reference significance.