Hereby the safety of the combined mining of thin seams under the close gob water was evaluated.

根据分析的结果评价了临界距离老空水下薄煤层联合开采的安全性。

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Based on the site actual measurements, the inversion analysis on the destroy range of roof and floor by the combined mining of thin seams was made by using numerical modeling.

以现场实测结果为基础，利用数值模拟与反演方法分析了薄煤层联合开采的顶、底板破坏范围。

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UCG is promoted as a relatively clean method of exploiting coal seams that are too deep or thin to be tapped economically using conventional mining.

相对于传统的采矿技术来说，煤炭地下气化技术在开采过深或过浅煤层时更为适用，这种技术不仅开采成本较低，而且开采过程较为清洁。

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Drillers have learned to drill horizontally into long, thin seams of shale and other rock that holds oil, instead of searching for rare underground pools of hydrocarbons that have accumulated over millions of years.

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She said the Human Fertilisation and Embryology Act "yet again shows itself to be wearing very thin at the seams".

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Blankenship has kept Massey focused stubbornly on Central Appalachia, where a century of digging has left seams mostly too short and thin to mine profitably at current prices.

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