medium-steep seam 中倾斜矿层
the steep seam 急倾斜煤层
steep seam mining 急倾斜煤层开采
top coal in steep seam 急倾斜煤层放顶煤
steep seam with strong outburst 急倾斜强突出煤层
steep coal seam 大倾角煤层
steep thin seam 急倾斜薄煤层
Furthermore,the deformation of surrounding rock of the steep seam under the rainfall condition could be predicated,which provides the theoretical foundation for safety mining and mining protection.
在此基础上,提出了降雨条件下近地表急倾斜煤层围岩在开采过程中的变形情况,为安全开采与防护提供了理论基础和定理依据。
参考来源 - 降雨条件下急倾斜煤层开采的仿真分析Secondly, on the base of the multiplicity of the geology factors what affect the degree of difficulty of top coal caving of steep seam. It builds a compositor model by means of applying to multiplicity principal component analysis.
其次针对影响急斜煤层顶煤可放性地质因素的多元性,应用多元统计分析理论中主成分分析法,建立顶煤可放性排序模型。
参考来源 - 急斜煤层顶煤可放性因素研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The horizontal section top coal caving in steep seam is different from the gently inclined seam.
急斜煤层水平分段放顶煤开采与缓斜煤层不同，工作面沿煤层厚度的水平线布置，长度短。
There have been some problems such as low coal recovery and difficult management after coal mining in steep seam mining method.
急倾斜煤层的回采一直存在着回采率低、采后难以管理等实际问题。
On the basis of summarizing testing effects, the extension of crack and the breaking mechanism of top coal caving in steep seam have been analyzed by applying fracture mechanics theory.
在总结现场试验效果的基础上，应用断裂力学理论分析了急倾斜煤层巷道放顶煤顶煤破断裂纹的扩展和破碎机理。
应用推荐