Technical characteristics of high efficient CMM drainage in Poland;
波兰煤矿瓦斯高效抽放技术特点
Directional Drilling for Methane Drainage in Advance of Mining;
采前瓦斯抽放定向钻进技术
Gas drainage technology for fully mechanized caving mining face in high gas outburst seam;
高瓦斯突出煤层综放工作面瓦斯抽放技术
The paper introduced the tes of the gas drainage method for the heading face in seam with outburst potential.
介绍了突出煤层掘进工作面瓦斯抽放方法试验,考察得出了巷帮长钻孔,并利用工作面深孔爆破技术来增大煤层透气性,抽放卸压瓦斯效果较为理想,大大减少了突出危险性,安全提高了煤巷单进。
Gas concentrations drop,and the effective gas drainage period of holes is shortened,because pores and cracks in the coal seam become completely developed after gas drainage.
针对煤层钻孔抽放瓦斯后煤层孔隙裂隙发育致使瓦斯浓度下降,钻孔有效抽放期缩短的技术难题,首次提出二次封孔方法。
Research on Gas Suction Parameters Optimization of Taoyuan Coal Mine;
桃园煤矿瓦斯抽放参数优化研究
The application of the gas drainage technology in Donghai coal mine is introduced, including gas drainage in close coal layer, gas drainage in goaf, gas drainage from coal, and local gas drainage.
介绍瓦斯抽放在东海矿的应用,抽放方式为邻近层抽放、空区抽放、本煤层抽放及局部抽放。
There are many kinds of forms of gas discharge, but the main form is soft coal seam gas discharge.
瓦斯抽放形式有多种,本煤层抽放是其主要形式。
The application of gas drainage technology in high Level drainage roadway in the Wulan Mine
高位抽放巷瓦斯抽放技术在乌兰矿的应用
Design for drawing out gas with high position boring at coal face
轻放工作面抽放瓦斯高位钻孔的设计
Application of Gas Drainage Pump to Tunnel Gas Emission
瓦斯抽放泵在巷道排放瓦斯中的应用
Study on Technology of Gas Draining While Mining in Working-face;
回采工作面边采边抽瓦斯抽放技术研究
The use of adjacent area mine gas extraction data for the determination of rationalized time to extract coalbed methane
利用相邻区域瓦斯抽放数据确定煤层瓦斯合理抽放时间
Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face
综放面顶板覆岩走向长钻孔卸压抽放瓦斯研究
Research on Numerical Simulation of Air Leakage in Fully Mechanized Gob under the Condition of Gas Drainage;
综放采空区抽放条件下漏风流场数值模拟研究
Characteristics of Gas Emission and Distribution of Fully Mechanized Top-Coal Caving Face Under Gas Drainage Conditions
综放工作面抽放条件下瓦斯涌出及分布特征
Put it in a desk drawer.
把它放到书桌抽屉里去。
He put the diary away in the drawer.
他把日记簿放到抽屉里。
The toilet flushed.
抽水马桶放水冲过了。
pinch discharge pumped laser
箍缩放电抽运激光器
Put the magazine into the drawer.
把杂志放入抽屉里。
The old drawer exuded a smell of camphor.
陈年抽屉放出樟脑气味。
"Where do the forks and knives go?""They go in that drawer."
“这些叉子和刀子要放在哪里?”“放在那个抽屉里。”
I left it either on the table or in the drawer.
我不是把它放在桌子上了, 就是放在抽屉里了.
