查询词典 goaf

By using of dynamic fuzzy group method, the top coal cavability was evaluated according to the following seven factors, such as coal seam strength, mining depth, crack developing extent's features, dirt band height, filling situation of goaf, classification of main roof and the ratio of mining and caving height etc.

运用动态模糊聚类方法，以煤层强度、赋存深度、节理裂隙发育程度、夹矸厚度、采空区充满程度、老顶级别、采放比等7个因素按模糊最大隶属度原则综合评价顶煤冒放性。建立了模糊聚分析方法的数学模型，以上述7个指标为基础，对顶煤冒放性的模糊聚类分析进行运算，给出分类的实施过程。潞安矿区顶煤冒放性分类结果表明， 5对主要生产矿井主采3号煤层，其顶煤冒放性皆为好和较好，经潞安矿区综放开采实践证实，分类合理

The study we have performed demonstrated that the main roof first broke with asymmetry character; gully mining-induced slope was divided into multilateral blocks by surface advance cracks. Furthermore, multilateral blocks rotated and subsided by the function of extrusion and friction between the broken rock block above the goaf and the rock mass advance the coalface.

冲沟坡体下开采时，基本顶初次破断具有不对称性；冲沟采动坡体被地表超前裂隙切割成多边块状，并在两侧坡体的夹持摩擦作用下缓慢回转下沉；相同地质条件下，坡角越大，采动坡体对工作面矿压影响越大。

There is important significance for guiding preventing and putting out fire and safety production that marking off danger zero of coal spontaneous combustion in goaf exactly and doping coal burning period and the distributing chart of high temperature spot.

准确的划出采空区浮煤自燃的危险区域，预测出回采时，煤自燃的发火期及高温点的分布，对指导煤矿防灭火和安全生产具有重要意义。

The paper introduces roof control methods of goaf of large mining height fully-mechanized face by artificial forced caving with deep-hole blasting at seam 14 of Silaogou Mine and analyzes the effect.

介绍大同煤矿集团公司四老沟矿14#层404盘区8402大采高综采工作面人工强制深孔爆破处理采空区顶板的技术，并对其效果进行了分析。

Through methane simulation experiment on ignition and blasting due to seam roof rock friction in Qinshui Coal Mining District of Yangcheng, it is shown that sparks will be generated through friction while caving ,causing gas and water mixture to fire, it is big hidden sources which cause methane blasting accident in goaf.

通过对阳城沁水矿区煤层顶板岩石相互摩擦引燃引爆瓦斯模拟实验，得出&岩石在冒落过程中相互撞击摩擦产生火花，可能引起瓦斯与空气混合物着火，是造成采空区瓦斯爆炸事故引爆源&的结论。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。