摘要
利用光纤光栅传感技术原理,采用适合的光纤光栅系统监测井筒变形,对监测系统数据进行详细变形分析,且与地层水文动态进行综合对比分析,预测出最容易发生井筒破坏的地层区间。光纤光栅波长变化与松散地层变形以及地下水位变化有着良好对应关系,当地层压缩和地下水位降低时,波长值减小,当地层压缩缓和和水位上升时,波长值增大。
Based on the principle of fiber bragg grating sensing technology,we design a suitable detecting system to monitor shaft deformation,and analyze the data from the monitoring system in detail.Besides,we conduct a contradistinctive analysis between the hydrology development and strata deformation,and forecast the strata interval which will damage the shaft easily.It＇s has a good corresponding relation between wavelength change of fiber bragg grating and strata deformation as well as the level of groundwater.When the unconsolidated strata are compressed and the level of groundwater is reduced,the wavelength value decreases,when the compressed strata are relaxed and the level of groundwater is upgrade,the wavelength value increases.
出处
《煤矿安全》
CAS
北大核心
2017年第3期140-143,共4页
Safety in Coal Mines
关键词
煤矿井筒
松散地层
井筒变形
光纤光栅
监测系统
mine shaft
unconsolidated strata
shaft deformation
fiber bragg grating
monitoring system
