1) Protection roads without pillars
无煤柱护巷
2) 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
3) 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
4) wide coal pillar protectingtheroadway
大煤柱护巷
5) narrow pillar drift
小煤柱护巷
1.
According to the action of cantilever rock seam on the overly- ing strata of coal body, the paper analyses the distribution rule of abutment pressure and the theoretical basis of narrow pillar drift and exploies the sup- port type of drifts in inclined and steep inclined coal seam under the condi- tion of narrow pillar drift.
从悬伸岩层对煤体上覆岩层作用的角度,分析了支承压力分布规律的形成和小煤柱护巷的理论依据,并对小煤柱护巷条件下急倾斜与倾斜煤层中巷道的支护方式进行了一定程度的探讨。
6) width of chain pillar
护巷煤柱宽度
补充资料：半煤岩巷掘进
见煤巷掘进。
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