基于Matlab曲面插值算法的综放工作面瓦斯分布特征研究
Research on gas distribution characteristics of fully mechanized top coal caving face based on surface interpolation algorithm of Matlab
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摘要: 受采煤工艺、工作面风流、采空区瓦斯、瓦斯物理特性等因素影响，工作面不同区域的瓦斯分布不尽相同，为准确掌握综放工作面在不同生产条件下的瓦斯分布特征，利用单元法和Matlab数值软件，通过工作面测定单元的划分，构建、分析各测定单元的三维瓦斯分布图来研究整个工作面的瓦斯分布特征。现场应用结果表明：不同生产条件下，沿工作面煤壁至采空区方向，在进风巷上帮至回风巷下帮这段工作面区间内，各测定单元在整个通风断面上的瓦斯分布呈现“U”型变化规律；沿进风巷至回风巷方向，工作面整体瓦斯体积分数呈现逐渐升高的变化规律。
Abstract: Affected by the factors of coal mining technology, working face air flow, goaf gas, gas physical characteristics and other factors, the gas distribution in different areas of the working face is not the same. In order to accurately grasp the gas distribution characteristics of fully mechanized caving face under different production conditions, the element method and Matlab numerical software are used to construct and analyze the three-dimensional gas distribution map of each measuring unit through the division of measurement units to study the gas distribution characteristics of the whole working face. The field application results show that: under different production conditions, along the direction from the coal wall to the goaf, the gas distribution of each measuring unit on the whole ventilation section presents a “U” shape change law along the direction from the coal wall to the goaf, and from the upper side of the intake roadway to the lower side of the return air roadway, the gas volume fraction of the working face increases gradually along the direction from the air inlet to the return air roadway.-
Keywords:
- fully mechanized caving face /
- gas distribution /
- element method /
- Matlab /
- change law
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