...大煤柱；窄煤柱；沿空掘巷；煤柱宽度；双U型 [gap=1658]Key words large pillar; narrow pillar; roadway in gob entry driving; pillar width; double U-shaped ...
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roadway in gob entry driving
采空区巷道掘进
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Industrial field tests have shown that the status quo of large deformation and severe damage of the roadway in the gob-side entry driving has been improved.
现场工业性试验表明，沿空掘巷巷道变形大、破坏严重的现状得以改善。
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