1) coal pillar entry retaining
煤柱留巷
2) maintaining entries along gob edges
沿空留窄煤柱掘巷
1.
This paper raises out rock control principle in maintaining entries along gob edges of sub-level caving mining and bolt support,it is applied to engineering practice and technical and economic results are gained.
提出了综放沿空留窄煤柱掘巷围岩控制原理和锚杆支护方案 ,并应用于工程实践 ,取得了良好的技术经济效
3) 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
4) The pillar on sides of drift
巷旁煤柱
5) entry pillar
平巷煤柱
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