融合伪卫星和光纤传感器技术的渣土体水平位移实时监测

Real time monitoring of horizontal displacement of slag soil based on pseudolite and optical fiber sensor technology

近年来,我国高速的城镇化带来了渣土围城的隐患,一些居民区附近出现几十甚至上百米高的结构松散且极不稳定的渣土山,随时可能发生垮塌和滑坡,亟需高精度的实时监测及预警。本文针对渣土体的内部—表面位移监测及滑坡预警的实际需求进行深入研究,完成了基于伪卫星系统的高精度表面位移监测和相应算法实现以及基于特制的光纤光栅传感器高精度内部位移监测,并进一步针对表面—深部位移实时监测的渣土体稳定性评估和灾害预警提出建设性意见。本文提出并实现的融合高精度伪卫星表面位移及光纤光栅深部位移监测的渣土体滑坡监测系统,可为进一步的渣土山处置提供重要的理论基础和数据支撑。

In recent years,China’s high-speed urbanization has brought about the hidden danger of muck besieged cities.In some residential areas,there are loose and unstable slag soil hills with tens of meters to 100 m in height,which may collapse and landslide at any time,so high-precision real-time monitoring and early warning are urgently needed.In this paper,according to the actual needs of monitoring the internal surface displacement of slag soil and landslide early warning,high-precision surface displacement monitoring and corresponding algorithm implementation based on pseudolite system and high-precision internal displacement monitoring based on special fiber Bragg grating sensor are completed.Furthermore,the stability assessment and disaster warning of slag soil mass for real-time surface deep displacement monitoring are further studied and put forward constructive suggestions.In this study,the monitoring system of slag soil landslide based on high-precision pseudolite surface displacement and fiber Bragg grating deep displacement monitoring is proposed and implemented,which can provide an important theoretical basis and data support for further disposal of slag soil hill.