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- The theoretical semi-variogram model of coal thick No.17 is establ... 实践证明,该软件在煤层、煤质以及开采指标评价等方面具有广阔的应用前景。
- Based on this mathematical characteristic, new evaluation and prediction method for the change of coal thickness was studied and analyzed. 根据这一数理特征,研究分析出了新的煤层厚度变化程度的评价方法和煤厚变化预测方法。
- The methods and principles of measuring coal thickness by resistivity method along a horizontal borehole in coal sean are presented. Several sorts of geologic electrical models are forward simulated by using linear numerical filter. 论述了顺煤层水平钻孔中电阻率法探测煤层厚度的方法原理,使用线性数字滤波法对不同地电类型做了正演模拟。
- Acc ording to the validation result ,it is proved true of the 3D high precision expl anation that the variation of coal thickness is mainly controlled by the ancient sedimentary environmen... 而且,与实际揭露相比,三维地震资料的煤厚预测精度较高,为矿井的采区划分、安全生产和巷道布局提供了可靠的地质依据。
- After integra ted interpretation of the hole core, well-logging and 3D data, it is found out why the variation of coal thickness in Hole T4 and the trend of coal thickness in this region. 后期的地面钻探补充勘探结果表明:通过对三维地震信息的综合地质解释,认为该区煤层厚度变化主要是沉积原因的结论是正确的;
- Many modelling results have showed that the resistivity curves reflect obviously the variation of coal thickness,which are enabled to measure the coal seam with the thickness mors than 0 8m. 结果表明,电阻率曲线对煤厚变化反映明显,能探测厚度大于0.8m的煤层。
- The change of coal thickness caused by geological structure is nonlinear and revulsion, but in a certain range, the mathematical expectation of coal thickness distribution is a fixed value. 由构造引起的煤厚变化具有非线性特征和突变性,但在一定的范围内,煤厚分布的数学期望为一个固定值。
- coal thickness coefficient of variation 煤层厚度的变异系数
- Structural analysis of half variation function of coal thickness 煤厚半变差函数的结构分析
- a stratum of ore or coal thick enough to be mined with profit. 含有厚到可以开采并获利的矿石或煤的地层。
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- a stratum of ore or coal thick enough to be mined with profit 含有厚到可以开采并获利的矿石或煤的地层
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- We have enough coal to see the winter out. 我们有足够的煤过冬。
- They eked out their coal by collecting firewood. 他们拣拾木柴以补充煤的不足。