low coal seam

Presents a model for distinguishing mining way of gently inclined low coal seam based on rough set theory .

建立了基于粗糙集理论的我国缓倾斜薄煤层采煤方式选择模型。

Mining Application of DBT Full Automation Slicer Technology in the Low Coal Seam of Xishan

DBT全自动化刨煤机技术在西山薄煤层开采应用

This paper discusses coal cutting drum , coal loading , maximum coal cutting height , low coal seam conveyor and how the low coal seams restrict the use of coal shearers .

分析介绍了滚筒装煤、最大采煤高度、薄煤层输送机、薄煤层对采煤机的要求等问题。

The Study on the Reservoir Characteristics of Low Rank Coal Seam in China

中国低阶煤储层特征分析

Study on the effective technology way for mining methane in low permeability coal seam

低渗透煤储层煤层气开采有效技术途径的研究

The Experimental Study on Supercritical Water Extraction to Transform Low Seepage Coal Seam

超临界水抽提改造低渗透煤的实验研究

Study on Mechanism of Injection Heat Increasing Production in Coal-bed Gas of Low Permeability Coal Seam

低渗透煤层煤层气注热增产机理的研究

Experimental Research on Gas Drainage of Tunneling Face in Loose and Low Permeability Coal Seam

松软低透煤层掘进工作面瓦斯抽放技术研究

Testing study of methane drainage by bore and hydraulic-cutting seam from low permeability coal seam

低渗透煤层钻孔与水力割缝瓦斯排放的实验研究

Study on Effect of Intensified Increasing Permeability by Deep-hole Presplitting Blasting in High Gas and Low Permeability Coal Seam

高瓦斯低透气性煤层深孔预裂爆破强化增透效应研究

Coal cutting equipment also known as high pressure hydraulic slotting machine is a set of equipment to improve low permeability coal seam gas drainage efficiency , which utilizes high pressure water jet technology to drill and cut seam in coal mining process .

煤矿割缝设备又称高压水力割缝机，是在煤矿开采过程中利用高压水射流技术进行钻孔和割缝，从而提高低渗透煤层瓦斯抽放效率的一套设备。

Research on Directional Drilling Technique of Gas Drainage in Low Gas Permeability Coal Seam

低透气性煤层瓦斯抽放定向钻进技术研究

Numerical Test of Gas Drainage in Low Air Permeability Coal Seam by Rifting Slots

割缝排放低透气性煤层瓦斯过程的数值试验

The established coal bed methane influent mode can correctly shown the coal bed methane flow law in the coal seam , which would have a certain guidance to the development of low penetration anthracite coal seam in China .

所建立的煤层气扩散渗流模型较准确的反映了煤层中煤层气流动规律，对我国大面积低透气性无烟煤煤层气的开发具有一定的指导意义。

At present , a suit of perfect feasible technological measure of gas drainage in low gas permeability coal seam has never formed in our country . So it has wide application prospect and using value to study gas drainage in low gas permeability coal seam .

目前我国低透气性煤层的瓦斯抽放一直没有形成一套完善可行的技术措施，因此，研究低透气性煤层瓦斯抽放具有广阔的应用前景与应用价值。