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- deep coal bed 深部煤层
- 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 infection of deep part mining to draining of superficid part water bearing ground,thickness of coal bed and obliquity to mining are analyzed. 分析了覆盖破坏的覆岩岩性及结构对地表移动和覆岩破坏的影响,深部开采对浅部含水层疏干、煤层厚度及倾角对开采条件的影响;
- Methanol and its derivatives, acetylene chemical industry, coarse benzene processing, chemical fertilizers, coal tar deep processing, coal combined oil and the all-round utilization of coal bed methane and coke oven gas and so on. 甲醇及衍生物、乙炔化工、粗笨加工、化肥、煤焦油深加工、煤制油以及煤层气和焦炉煤气多联产利用等。
- 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。
- Wennan colliery of Xinwen Coal Mining Group is an old coalmine and is mining deep coal layer. 汶南煤矿是新汶矿业集团进入深部开采的老矿井。
- Controlled source audio magnetic telluric (CSAMT) is an effective approach to detect deep coal stratum in complicated-terrain mountain. 摘要对于复杂地形山区深部煤系地层的勘探，可控源音频大地电磁法(CSAMT)是比较有效的一种方法。
- 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。
- So the similar simulation method is used in research on the instability mechanism and displacement rules of overlying magmata strata at the process of deep coal seam exploitation. 文章以相似模拟实验为手段研究了深部煤层开采过程中高位赋存的岩浆岩的运移机理,得出岩浆岩初次破断为固支梁的下位拉断非全厚破断,且破断后立即失稳;
- 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。
- 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 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。
- It has important guidance effect and actual meanings in determining the strip mining method for excavating deep coals under buildings. 对确定建筑物下深部压煤是否采用条带法开采,具有重要的指导作用和实际意义。
- 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。
