测氡仪在煤矿中的应用及性能研究

Application and performance research of radon monitor in coal mine

煤矿火源和采空区位置的准确探测对煤矿安全治理具有重大意义。简要分析了测氡法探测火源和采空区位置的基本原理,并对静电收集法测氡仪的组成及性能进行研究。结果表明:通过同位素测氡法探测氡气高浓度区可确定火源和采空区的位置和范围,为后续的钻探注浆提供了科学依据;静电收集法测氡仪利用能谱甄别可消除对探测结果的影响,通过提高电场强度、降低空气湿度及增大收集室体积,可提高测氡仪的探测性能,为后续测氡仪的结构设计及优化提供了理论支撑。

The accurate detection of coal mine fire source and goaf location is of great significance to coal mine safety management.The basic principle of detecting fire source and goaf location by radon measuring method was briefly analyzed,and the composition and performance of the radon monitor by electrostatic collection method were studied.The results show that the location and range of fire source and goaf can be determined through detecting the high concentration area of radon by with isotope radon measurement method,which provides a scientific basis for subsequent drilling grouting.The radon monitor based on electrostatic collection method can eliminate the influence on the detection results by energy spectrum screening,the detection performance of the radon monitor can be improved through improving the electric field strength,reducing the air humidity and increasing the volume of the collection chamber,which provides theoretical support for the structural design and optimization of the radon monitor.