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关注：1
2013-05-23 12:21
求翻译：7.必要时进行注浆封闭井筒围岩，封堵瓦斯，同时加强迎头供风。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
7.必要时进行注浆封闭井筒围岩，封堵瓦斯，同时加强迎头供风。
问题补充： |
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2013-05-23 12:21:38
7 closed when necessary for the wellbore rock grouting, sealing gas, while strengthening the head for the wind.
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2013-05-23 12:23:18
7.When necessary note pulp closed izutsu Wai Yan, plugging head-on gas, and at the same time strengthening for wind.
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2013-05-23 12:24:58
When 7. necessities carries on the note thick liquid seal well chamber adjacent formation, the trap gas, simultaneously strengthens supplies the wind directly.
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2013-05-23 12:26:38
7. If necessary, grouting and borehole surrounding rock of closed to block gas, while strengthening the head-on wind supply.
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2013-05-23 12:28:18
7 closed when necessary for the wellbore rock grouting, sealing gas, while strengthening the head for the wind.
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