基于OTDR的矿井渗水监测技术  

Monitoring technology of mine seepage based on OTDR

作　　者：朱宗玖[1] 李仁浩 ZHU Zongjiu;LI Renhao(College of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《光通信技术》2020年第1期20-22,共3页Optical Communication Technology

基　　金：安徽省政府国家标准奖励基金光纤器件(1C067)资助。

摘　　要：煤矿开采过程中的水灾害往往带来各种巨大损失,而对矿井渗水的监测一直比较困难。基于光纤微弯损耗原理和光时域反射(OTDR)技术,提出了一种针对矿井渗水的检测定位方法。结合膨胀土防水毯(GCL)遇水膨胀的特性,井壁渗水区的GCL膨胀并传导形变至与之紧贴的光纤,通过光纤微弯损耗原理获取对渗水情况的检测结果,同时结合OTDR原理,可对出现弯曲损耗的形变点即渗水点进行定位。实验证明渗水位置与测量结果基本吻合,该方法具有较好的定位效果。Water disasters in coal mining often bring a variety of huge losses,but it is difficult to monitor water seepage in coal mines.Based on the principle of optical fiber microbending loss and the optical time domain reflection(OTDR)technology,this paper presents a method of detecting and locating mine water seepage.Combined with the water expansion characteristics of expansive soil waterproof mat(GCL),GCL in the water seepage zone expands and conducts deformation to the fiber tightly attached to the outer diameter.The detection results of water seepage can be obtained through the principle of optical fiber micro-bending loss.At the same time,combining with the principle of OTDR,the deformation point of bending loss,namely the water seepage point,can be positioned.The experimental shows that the seepage location is basically consistent with the measured results and the method has a good location effect.

关 键 词：矿井渗水 渗水定位 微弯损耗 光时域反射 

分 类 号：TN818[电子电信—信息与通信工程]