Coal and gas outburst early-warning technology based on change of gas concentratio
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摘要: 为实现掘进工作面煤与瓦斯突出的实时、准确和超前预测，提出了一种基于瓦斯浓度变化的煤与瓦斯突出预警方法，通过掘进工作面煤体瓦斯压力反演技术，确定了煤与瓦斯突出临界条件，构建了煤与瓦斯突出预警模型，在此基础上研制了基于瓦斯浓度变化的非接触式煤与瓦斯突出预警系统。应用结果表明，该系统能够实时监测掘进工作面瓦斯浓度变化和风量信息，并提前一个工作班次对煤与瓦斯突出区域进行非接触实时灾害预警。Abstract: In order to realize real-time, accurate and advanced prediction of coal and gas outburst in heading face, a coal and gas outburst earlywarning method based on change of gas concentration was proposed. Through inversion technique of coal gas pressure in heading face, critical condition of coal and gas outburst was determined, and early-warning model of coal and gas outburst was built. A non-contact early-warning system of coal and gas outburst was developed based on change of gas concentration. The application result shows that the system can monitor change of gas concentration and volume information real-timely, and make non-contact and real-time hazard early-warning in coal and gas outburst regional in advance of a work shift.
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