煤矿机械

随着煤矿工业的不断发展，井下CH₄浓度检测作为保障安全生产的关键环节，其检测精度和环境适应性面临严峻挑战。现有检测方法存在对复杂干扰信号识别能力弱、激光穿透性不足等问题，导致在复杂的煤矿井下环境中，CH₄浓度检测偏差较大。为此，提出了一种融合由计算机断层扫描技术(CT)改进可调谐半导体激光吸收光谱(TDLAS)技术的甲烷检测仪。测试结果表明，该检测仪在对不同气体进行识别测试时，对每种气体的识别准确率均在99%以上，其中对CH₄识别准确率为100%。同时，在激光技术穿透性测试中，其穿透性远高于对比检测仪。该检测仪解决了传统方法在复杂井下环境中抗干扰能力弱、动态跟踪滞后的问题，为煤矿井下CH₄安全监测提供了新思路。

With the continuous development of the coal mining industry, the detection of CH₄ concentration underground, as a key link to ensure safe production, is facing severe challenges in terms of detection accuracy and environmental adaptability. The existing detection methods have problems such as weak recognition ability for complex interference signals and insufficient laser penetration,which lead to large deviations in CH₄ concentration detection in the complex underground coal mine environment. Therefore, proposed a methane detector that integrates Tunable Diode Laser Absorption Spectroscopy(TDLAS) technology improved by Computer Tomography(CT). The test results show that when this detector conducts recognition tests on different gases, the recognition accuracy rate for each gas is above 99%, among which the recognition accuracy rate for CH₄ is 100%. At the same time, in the laser technology penetration test, its penetration is much higher than that of the comparison detector. This detector has solved the problems of weak anti-interference ability and lagging dynamic tracking of traditional methods in complex underground environments, providing a new idea for CH₄ safety monitoring in underground coal mine.