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- 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。
- geometry of coal bed 煤层几何形态
- 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。
- 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。
- 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;
- 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。
- 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;
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- This is the hole geometry of this well. 这是这口井的井身结构。
- By the actual simulation of the concrete region, summarizes the investigative method of simulation in the geological evolution history of coal bed gas. 通过对具体地区的实际模拟,总结出了煤层气地质演化史数值模拟研究的方法。
- The geometry of figures on the surface of a sphere. 球形表面物体的几何学。
- Of or relating to the geometry of geodesics. 大地测量学的大地测量几何学的或与之有关的
- This paper sets forththe Occurrence law and good prospect of coal bed gas in JiXi coalfield by analyzing the char-actelisties of gas Source rock, reservoir and cap rock. 从气源岩特征、煤层气情况、储集层和盖层特征分析入手,阐明了鸡西盆地煤成气赋存规律与远景。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- On the roof of coal bed are consists of the mudstones in dark-gray or grizzle which will expand met water and wet air, with higher expansion stress and coefficient. 煤层顶板为深灰色和灰色泥岩,该岩石遇水和潮湿空气产生膨胀,膨胀应力和膨胀率大。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- The paper has expounded components and several types of coal bed gas and analys ed the influences of microlithotype, matur ity, reservoir pressure and so fort... 对分析煤盆地间、钻孔间以及煤层间煤层气成分的变化具有重要意义。
- The geometry of the pavement is extremely important. 道面的几何尺寸非常重要。
- Their study is called the intrinsic geometry of the surface. 它们的研究被称做曲面的内蕴几何。