2) coal pillars
留煤柱
1.
Base on the longwall coal mining with coal pillars applied in the medium and small coal mines in the Shaanbei Coal Field,the technical targets to prevent and reduce the mine disasters are to classify two different feature coal pillars.
针对陕北煤田中小煤矿采用的长壁留煤柱开采,防灾减灾的技术目标是区分两类不同性质的煤柱,即区内煤柱和区域间的隔离煤柱,实现隔离小区域的适时无灾害垮落,防止跨隔离区的大范围垮落。
4) future small coal pillar
留小煤柱
1.
Based on the analysis of the bolting with wire pillar supporting technology used in future small coal pillar along gob-side driving 8 228 wind entry of Taoyuan Coal Mine,consider that the supporting technology is workable,and has definite social and economic benefit.
通过对桃园煤矿 82 2 8风巷预留小煤柱沿空掘巷锚笆柱支护技术的分析 ,认为该支护技术是可行的 ,具有一定的社会经济效益。
5) Relic Pillar
残留矿柱
6) pillars
[英]['pilə] [美]['pɪlɚ]
留矿柱
补充资料:郊外系留气球
郊外系留气球
郊外系留气球 郎梅供稿
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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