1) gas pre-extraction from coal seam being worked
本煤层瓦斯预抽放
2) coal seam gas drainage
本煤层瓦斯抽放
3) coal seam prepares gas of take out
煤层预抽瓦斯
4) strengthening gas extraction in advance
强化预抽煤层瓦斯
1.
Regional gas control technologies,such as protecting seam exploitation,pressure-relief gas extraction,and strengthening gas extraction in advance,have gotten a great development.
随着中国煤矿开采深度的增加,煤与瓦斯突出矿井和突出煤层的数量不断增加,以保护层开采及卸压瓦斯抽采技术和强化预抽煤层瓦斯技术为代表的区域性瓦斯治理技术,得到了长足发展。
5) predrainaging methane
瓦斯预抽放
1.
By analyzing the actual situation that Tunlan mine has the occurrence of gas,in the Southern fourth panel 12403 the working face using coal seam reticulated boreholes and predrainaging methane resolve gas emission of the working seam.
通过分析屯兰矿井下瓦斯赋存的实际情况,在南四盘区12403工作面采用本煤层网状抽放钻孔布置,进行瓦斯预抽放,解决开采层瓦斯涌出。
6) coal bed methane extraction
煤矿抽放瓦斯
1.
However up to now the relative baseline methodology has not been approved by EB which becomes a bottleneck for coal bed methane CDM project development due to coal bed methane extraction situation at different coalmine is various and complex and the CDM is a newly emerging things.
本文介绍了现已申报的两个煤矿抽放瓦斯综合利用CDM项目方法学的主要内容,分析了其中存在的缺陷和不足,并且提出了相应的意见和建议,希望能给以后相关方面的研究带来一定的启发和帮助。
补充资料：放去
1.抛弃，丢开。 2.释放使离开。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条