gas detector

This paper expounds the scopes and causes of the influenc e of the variation of the oxygen concentration on the indicating values of both op tical interference type catalytic combustion type gas detectors, and puts forwar d corresponding preventive measures.

阐述了氧气浓度变化对光干涉型和催化燃烧型瓦斯检定器检测示值的影响范围及原因,并有针对性地提出了防范对策。

The paper analyses the causes of the optics path difference which come from the twocoherent lights that arc produced by interference system of the optics coal gas analyzer and re-searches the formation causes of the interference fringes and the interference types.

本文从对光学瓦斯检定器干涉系统两相干光光程差产生原因的分析，探讨其干涉条纹的成因和干涉类型。

Directional Drilling for Methane Drainage in Advance of Mining;

采前瓦斯抽放定向钻进技术

Controlling measures of methane and coal dust and ventilation method in fully mechanized excavation face;

综掘工作面治理瓦斯煤尘通风方法的探索

Integrated control technology for methane in mining faces;

回采工作面瓦斯综合治理技术

The Analysis of Geological Factors to the Existence of Coal Gas in the Sunan Coal Mining Area and Xutuan Coal Field;

浅析宿南矿区和许疃井田瓦斯赋存的地质因素

Dilution process of the coal gas in the laneway with pressured-injection ventilation and extracted methods had been analyzed comparatively.

本文对煤矿瓦斯治理中压入式与抽吸式通风方式对掘进面附近瓦斯浓度稀释规律进行了对比分析,主要考察两种通风方式对于瓦斯析出量出现变动的适应能力。

Influence factors of mine gas hydrate formation in surfactant solution containing coal;

瓦斯水合物在含煤表面活性剂溶液中生成影响因素

Design and practices on network system of wireless sensors for mine gas monitoring and measurement;

煤矿瓦斯监测无线传感器网络系统设计与实现

Design on wireless sensor network for mine gas measurement;

煤矿瓦斯监测无线传感器网络系统设计

Key issues of coal and gas co-mining in thick seam;

厚煤层煤与瓦斯共采的关键问题

Theoretical research on propagation law of acoustic emission wave in coal seam containing gas;

含瓦斯煤体声发射应力波传播规律理论研究

Prediction of gas emission time series based on W-RBF;

基于W-RBF的瓦斯时间序列预测方法