1) Heavy-caliber gas pipeline drill hole
大口径瓦斯抽采钻孔
2) large-diameter gas drainage well
大孔径瓦斯抽放孔
3) large drill hole
大口径钻孔
1.
Drilling technology of the large drill hole in complex strata
复杂地层中大口径钻孔的施工方法
4) gas extraction
瓦斯抽采
1.
Test results of surface gas extraction technology from boreholes in the goaf in Zhangbei Coal Mine, Huainan Mining Group are introduced in the paper.
文章对采空区瓦斯抽采技术的研究和推广应用具有一定的指导意义。
2.
Based on gas storage characteristic of coal seams,a gas extraction method used in coal mines is discussed.
分析了“先抽后采”概念的内涵及对煤矿瓦斯治理的作用,在研究煤矿煤层瓦斯赋存特点的基础上,综合分析了煤矿瓦斯抽采方法,结合煤矿瓦斯治理的实例和煤矿重特大瓦斯事故案例,对我国煤矿瓦斯治理提出了以下建议,即在有条件的情况下尽可能优先采用区域性瓦斯治理方法,强突出危险煤层和超大井型高瓦斯矿井必须采用区域性瓦斯治理方法。
3.
Secondly, according to the occurrence condition of far distance coal seams in this area, numerical model was set up to simulate rock stratum displacement law, pressure relief’s characteristics and deformation rule of protected coal seam, which provided a theoretical foundation to realise the harmonic mining of gas extraction and coal.
最后,根据采动过程中远程被保护煤层卸压增透特性研究结果,对平顶山矿区远程保护层开采卸压瓦斯强化抽采方案,以及瓦斯抽采和煤层开采的协调关系进行了初步分析。
5) Gas drainage
瓦斯抽采
1.
The new measuring method for distance of the gas drainage hole and seam permeability
瓦斯抽采孔孔距及煤层透气性的测定方法
2.
Base on the engineering practices of the technology to the gas drainage in Ningxia Mining Area,in comprehensive investigation of the gas drainage results of the directional drilling along seam and the relative relationship between each gas drainage parameter,in comparison with the conventional gas control technology with the borehole drilling in the strata of the .
概述了沿煤层定向钻进技术的发展现状及其定向钻进系统特点,基于该技术在宁夏矿区瓦斯抽采中的工程实践,综合分析了沿煤层定向钻孔的瓦斯抽采效果与各抽采参数间的相互关系,通过与该矿传统穿层钻孔瓦斯治理技术相比较,得出了沿煤层定向钻进技术在瓦斯治理工程中的7大优点,为该技术在国内相应地质条件下的推广应用提供了可靠的依据。
3.
The research provides a new way for gas drainage in low permeability coal seams.
研究成果消除了钻孔喷孔的不利影响,提高了孔群范围煤体的透气性,为突出煤层瓦斯抽采增透增流提供了一条新途径。
6) methane extraction
瓦斯抽采
1.
It is important to select methane extraction methods and model of bore holes laying out in the work of methane extraction.
煤矿瓦斯抽采方法及钻孔布置形式是矿井瓦斯抽采中的一项重要工作,其抽采方法与钻孔布置的合理性与否,施工质量的优劣直接关系到瓦斯抽采效果的好坏。
2.
This paper originally reports the situation test results of its application in the surveillance of methane extraction.
本文首次报告了光纤瓦斯检测装置在煤矿瓦斯抽采监测方面的现场监测结果。
补充资料：次大口径成品油管道(见大口径原油管道)
次大口径成品油管道(见大口径原油管道)
small big inch products pipeline
次大口径成品油管道比m“，。彬duet、pipeline)见大。径原油管道。
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