英语词汇“pillar working”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

> as lemmas

pillar working

pillar working n. Mining a working in which pillars (sense 10) are left in place; (also) mining carried out using such pillars.

ΚΠ

1860 W. Fordyce Hist. Coal 32 The hewers working at the face of the bords or the pillar workings.

1877 Encycl. Brit. VI. 64/2 Fig. 9 represents the Lancashire system of pillar-working.

1931 Iron & Coal Trades Rev. 122 622/1 The system briefly is pillar working by shortwall faces, the extraction of the pillars being accomplished on the return journey.

2002 Internat. Jrnl. Rock Mech. & Mining Sci. 39 9 Factors affecting..stability in level contiguous pillar workings in coal mines.

extracted from pillarn.

as lemmas

单词	pillar working
释义	> as lemmas pillar working pillar working n. Mining a working in which pillars (sense 10) are left in place; (also) mining carried out using such pillars. ΚΠ 1860 W. Fordyce Hist. Coal 32 The hewers working at the face of the bords or the pillar workings. 1877 Encycl. Brit. VI. 64/2 Fig. 9 represents the Lancashire system of pillar-working. 1931 Iron & Coal Trades Rev. 122 622/1 The system briefly is pillar working by shortwall faces, the extraction of the pillars being accomplished on the return journey. 2002 Internat. Jrnl. Rock Mech. & Mining Sci. 39 9 Factors affecting..stability in level contiguous pillar workings in coal mines. extracted from pillarn. < as lemmas
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