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- The exploration strategy of coal bed methane of coal basin in low coal rank in northwestern China 浅议我国西北低煤阶含煤盆地煤层气的勘探对策
- low coal bed 低煤层
- It is a new way of the utilization of coal bed gas. 为井下抽放煤层气的利用提出了一条新的途径。
- The coal bed methane (CBD) utilization level is low due to the lack of technology, fund and market demand. 由于技术、资金和市场的欠缺使得中国煤矿瓦斯利用水平还不是很高。
- Research result shows that controlling blasting technique is feasible to improve gas drainage under suction in hardness and low dialyzing coal bed. 研究表明，该技术用于坚硬低透气煤层，提高矿井瓦斯抽放率是可行的。
- Coal Bed Methane Drilling and Completion Technology in Western Basin of U.S. 美国西部盆地煤层气钻井和完井技术。
- Preliminary research on structural law of coal bed beneath nappe in No. 对新集二矿推覆体下煤层构造规律进行了初步研究。
- Graphite deposit of Heye was formed by metamorphism of the Permian coal bed. 荷叶石墨矿是由二叠系煤层变质而成的石墨矿床,石墨与煤呈同层异矿关系。
- Powder River basin, Uinta basin of USA and Tiefa basin of China are all low coal rank basins. 通过国内外实例,分析含气量和含气饱和度在煤层气勘探评价中的作用,认为在低煤阶含煤盆地中进行煤层气勘探很有前景。
- For measuring exactly on gas content of coal bed,required high core recov ery and short time to hoisting and loa ding. 为了准确测定煤层含气量,要求取心作业必须有高的收获率和尽可能短的提钻及出筒装罐时间。
- Several coal beds are developed in backswamp deposits. 河漫沼泽上发育多套煤层。
- The existing mine gas in coal bed occurs mostly in the free state,the adsorption state and the dissolved state. 瓦斯气体在煤储层中的赋存状态主要有游离态、吸附态和溶解态。
- The hydro-geological parameters of Triassic age coal bed 3 of Dongtan Coal Mine be calculated with it. 利用相关方程求出了全东滩矿3煤砂岩顶板含水层的水文地质参数。
- Low coal rate and UPC's exist because of the imperfection combust of coal in BF besides of the blindness in the choice of coal used to spew are the questions conquered to iron makers. 高炉喷吹煤粉是现代高炉冶炼的一项重大技术革命,目前存在的主要问题是喷煤比不高,煤粉在高炉内的燃烧不完全,有未燃煤粉存在,而且在高炉喷吹用煤种的选择方面存在盲目性。
- Roadway heading is the forerunner for clearly knowing coal bed geological conditions. 掘进巷道是全面、准确了解矿井煤层地质条件的先导。
- The mining of shallow coal bed in Shenfu Mine is seriously threatened by suffosion hazard of coal shaft. 神府矿区浅部煤层开采受到矿井溃砂的严重威胁。
- Reserves of coal, coal bed methane gas, bauxite, refractory clay, potassic rock and so on rank first in China. 煤、煤层气、铝土矿、耐火粘土、铁矾土、含钾岩石等储量居全国首位；
- Coal bed methane content is fairly high which threatened safety mining in some areas in Shuangyashan mining area. 双鸭山矿区局部区域煤层瓦斯含量较高,威胁到安全生产。
- The development of Coal bed Methane (CBM) has made greater progresss in recent years. 摘要近年来，煤层气开发取得了较大进展。
- She stooped low to look under the bed. 她弯下腰看床底下。
