1) top coal drawing with non chain pillar entry protection
放顶煤无煤柱护巷
1.
Based on the method of finite element orthogonal test,this paper designs the experimental scheme and gives numerical model of top coal drawing with non chain pillar entry protection.
根据有限元正交试验法，设计了有限元正交试验方案，建立了放顶煤无煤柱护巷的数值模型；通过对计算结果分析，得出放顶煤无煤柱开采沿空巷道的布置参数和支护形式，可为放顶煤无煤柱护巷提供理论依
2) Protection roads without pillars
无煤柱护巷
3) roadway caving mining
巷柱式放顶煤
1.
A mechanics model of top coal is built up according to the roadway layout manner of roadway caving mining in 3.
5~10m大倾角煤层巷柱式放顶煤开采巷道布置方式,建立顶煤体力学模型。
4) combin gateway and pillar with fully mechanized top cawing mining
巷柱-综采放顶煤
1.
Refencing these advantages which are fully mechanized top cawing mining and gateway and pillar top coal caving for steep inclined thick or special thick seam in China , from that, the paper put forward a combin gateway and pillar with fully mechanized top cawing mining technology in steep inclined special thick seam with a thickness form 10 to 20 m.
综合我国急倾斜煤层水平分层综采放顶煤和水平分段巷柱式放顶煤两种采煤方法的技术优点,提出在厚度10~20m的急倾斜煤层内使用"巷柱-综采放顶煤"开采技术。
5) chain pillar
护巷煤柱
1.
Controlling of rock burst in chain pillars between hydraulic mining face and drying mining face;
水旱交接处护巷煤柱冲击矿压控制
6) roadway sub-level caving
巷道放顶煤
1.
The model computer simulation for roadway sub-level caving of steep medium thickness～thick seem was set ip on the basis of industrial test It is simulated that the recovery rate of roof coal was influenced by the thickness of seam, the height of caving level and the distance of chute Thus, the optimal height of caving level was determine
在工业性试验的基础上建立了急倾斜中厚－厚煤层巷道放顶煤计算机模拟模型，模拟了煤厚、分段高度、放煤口距离对顶煤回收率的影响，确定了不同煤厚的分段高
补充资料：煤牌号
煤牌号
coal mark
me笼Pailiao煤牌号(c oal mark)煤炭分类中煤的实用分类，根据不同国家、不同地区的资源特点，以及不同工业用途对煤的要求，把煤划分成类别，这些类别的名称即为煤牌号。例如中国煤炭分类国家标准根据煤化度和工艺性质，把从褐煤到无烟煤之间的煤共分为17类，如气煤、肥煤、焦煤和瘦煤等，这些名称都是煤牌号。煤牌号在煤炭勘探、生产、分配和使用中作为评价煤质的依据。在煤炭销售时，按煤牌号进行计价。 (冯安祖)
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