Dealing with the practice of Jincheng Mining Bureau, the effect of breaking large coal on the washing technique and benefit is discussed, some helpful opinions are suggested.
结合晋城矿务局实际，论述了选前大块原煤的破碎对洗选工艺及效益的影响，并对破碎作业提出了一些建设性意见。
The paper emphatically analyses the interaction between the wall stress characteristic and coal getting by impact on the longwall face, proposes the work pattern of coal breaking by impact.
看重分析了长壁采煤工作面煤壁应力特点和冲击劈裂式采煤的相互作用关系，提出了冲击破煤的作业方式。
Using coal gangue and fly ash of Fuxin based on its basic properties checked, and using man-made graduation breaking coal gangue as aggregate, fly ash as filling.
在对阜新煤矸石、粉煤灰进行基本性质检测的基础上，将煤矸石破碎人工级配作集料、粉煤灰作填料。
PCB series crusher is used for breaking medium degree of hardness materials, such as brittle ore, rock, coal limestone, slag, etc. in chemicals, cement, building materials and electricity industries.
PCB系列锤式破碎机可供化工、泥、材、电等工业部门做中碎或细碎各种中等硬度以下的脆性矿山、石和煤、灰石、渣等。
An integrated evaluation of coal seam fracture development in terms of coal seam breaking index and deforming coefficient to predict high permeability area.
本文采用煤层断裂破坏指数、变形系数对煤裂隙发育程度进行综合评价，来预测高渗区。
During the entire process of breaking large coal cinder, the various working procedure meet safety and usefulness.
在破碎大煤块的整个过程中，各个工序满足安全性和实用性的统一。
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。
During the initial excavation, the tender coal seam workings in deep seam in Nantun Colliery takes on slocking of roof, with breaking-out in bulk coal and surrounding rock failure.
南屯煤矿深部松软煤层巷道，在掘进过程中顶板破碎，伴有大量顶煤冒落且围岩破坏严重。
Analysis of the mechanism of coal breaking by self-excited vibration water-jet; discussion on the influence of several parameters on pulverizing efficiency.
分析了自激振荡水射流超细粉碎系统对煤粉颗粒的粉碎机理，讨论了影响粉碎效率的几种因素。
Analysis of the mechanism of coal breaking by self-excited vibration water-jet; discussion on the influence of several parameters on pulverizing efficiency.
分析了自激振荡水射流超细粉碎系统对煤粉颗粒的粉碎机理，讨论了影响粉碎效率的几种因素。
应用推荐