1) The coal seam puts in nature boldly
煤层冒放性
2) 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
3) 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。
4) top coal caving characteristics
顶煤的冒放性
5) roof caving feasibility
煤层可放性
6) caving property
冒放性
1.
This paper uses the laboratory physical resembles to simulate the top coal caving property of the hard coal seam,puts forward the top coal caving property characteristics of hard coal,and the circumstance of the pressure distributes in front of the working face.
采用实验室物理相似模拟试验对坚硬煤层顶煤冒放性进行了研究,提出了坚硬顶煤的冒放性特征及工作面前方压力分布情况。
2.
Through the field observation and the data analysis on 13306 Comprehensive Mechanized Caved Coal Mining Face of the Gushuyuan Coalmine, and connecting with the theory of the caved coal property, this paper makes demonstration and analysis on some factors influencing the caving property of the top coal, and puts forward several necessary conditions for the application of the mining of the top coal.
通过对古书院矿13306综采放顶煤工作面的现场观测和数据分析,结合放顶煤的冒放性理论,对影响顶煤冒放性的几个因素进行了论证和分析,提出了使用放顶煤开采的几个必要条件。
补充资料：连续性与非连续性(见间断性与不间断性)
连续性与非连续性(见间断性与不间断性)
continuity and discontinuity
11an父ux泊g四f“山。麻以角g、.连续性与非连续性(c。nt，n琳t:nuity一)_见间断性与不间断性。and diseo红ti-
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