布里渊-拉曼融合型分布式煤矿安全监测关键技术研究

项目名称： 布里渊-拉曼融合型分布式煤矿安全监测关键技术研究

项目编号： No.51504229

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 矿业工程

项目作者： 胡佳成

作者单位： 中国计量大学

项目金额： 21万元

中文摘要： 自燃与坍塌是引起煤矿重大安全生产事故的最主要因素。而煤矿安全监测则可为安全生产提供有效保障。我国目前普遍采用电传感方式监测煤矿采空区温度与支护墙压力/应变，存在着监测参量单一、监测范围小、不能实现真正分布式测量的问题。本项目拟从布里渊散射频移信号中温度/应变双参量的去耦原理入手，通过布里渊-拉曼融合传感技术，建立温度/应变信号去耦模型，采用双光源分时复用技术，实现双参量信号同步采集；提出并行微波扫频方法，并对分段频谱信号的拼接方法进行研究，实现布里渊散射频移信号快速解调；设计温度/应变双参量加载实验方法，对布里渊-拉曼融合传感技术进行实验验证，优化实验方法及信号处理算法，评价温度/应变信号去耦方法和并行微波扫频方法的效果。最终为布里渊-拉曼融合型温度/应变双参量同时监测技术的实现提供理论基础和技术支持，也为煤矿安全监测中多参量同时测量技术的发展提供一种新的路径。

中文关键词： 安全监控；布里渊散射；分布式测量；温度/应变；煤矿安全

英文摘要： Spontaneous combustion and collapse are two main factors contributed to major coal mine production accidents. However, coal mine safety monitoring can provide effective guarantee for it. At present, our country widely used electric sensor method to monitor temperature in gob area of coal and pressure & strain of curtain wall, whereby it has some problems such as single monitor parameter, small monitor range, high cost, incapable of realizing real distribution measurement. This project study on .decoupling principle between temperature and strain double parameters in Brillouin scattering frequency shift signal firstly. The Decoupling model of temperature and strain is established by fused Brillouin-Raman sensor technology. To realize synchronous acquisition of two parameters signal, double light source time-sharing multiplexing technology is used. Parallel microwave sweep frequency method is proposed. Mosaic method of segmented spectrum signal is studied for realizing fast demodulation on Brillouin scattering frequency shift signal. Experimental loading method of temperature and strain parameters is designed. Through experimental testify on Fused Brillouin-Raman sensor technology, experimental method and signal processing algorithm are optimized, moreover the results of decoupling principle and Parallel microwave sweep frequency method are evaluated. The terminal purpose could provide theoretical foundation and technology support to realize synchronous monitoring between temperature and strain. It also provide a novel way to develop multi-parameter simultaneous measurement technology in coal mine safety monitoring.

英文关键词： safety monitoring;Brillouin scattering;distributed detection;temperature/strain;coal-mine safety