1) capability of top coal caving
顶煤可放性
1.
Application of AHP in determining weight of factors of capability of top coal caving;
层次分析法在确定顶煤可放性各因素权重中的应用
2) degree of difficulty of top coal caving
顶煤可放性
1.
Model and its application on the evaluation of degree of difficulty of top coal caving in steep seam;
急倾斜煤层顶煤可放性评价模型及应用
4) factors of roof coal caving rate
影响顶煤可放性因素
5) top coal cavability
顶煤冒放性
1.
The classification of top coal cavability and its application in Lu’an coal mine;
放顶煤开采顶煤冒放性分类及其在潞安矿区的应用
2.
Determination of top coal cavability in fully mechanized caving;
综放开采顶煤冒放性确定
6) top coal caving and drawing characteristics
顶煤冒放性
1.
Based on the similar simulation model experiment, the three forms of the bridge arch, semi_arch and pillar on the top coal caving and drawing characteristics are put forward.
运用相似材料模型试验，提出了顶煤冒放的桥拱式、半拱式和柱式３种结构特征；分析了影响顶煤冒放性的主要因素；运用数值方法得出了各因素的影响规律、主次排序和权重；基于模糊数学理论，提出了预测顶煤冒放性的分类方案。
2.
Based on the research of the effect of seam conditions on top coal caving and drawing characteristics, the effects of mining technological parameters on top coal caving and drawing characteristics are further researched with finite element orthogonal numerical test.
在煤层条件对顶煤冒放性影响研究的基础上,用有限元正交数值试验,进一步研究了开采工艺参数对顶煤冒放性的影响规律。
补充资料：综采放顶煤
综采放顶煤：厚煤层煤炭开采技术之一。把原来分层开采的煤炭，一次采完。方法是，在煤层底部按传统方法开采，使上面的煤炭在矿压的作用下，自动落下来。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条