地质

By considering torque characteristics of variable-frequency motors and mesh stiffness as well as backlash nonlinearity in gear transmission,a dynamics model for the cutting system of shield tunneling machine with redundant drives was established. The fluctuation characteristics of torque loads and dynamic cutterhead driving torque in composite strata were analyzed.

复合地层掘进扭矩载荷突变是造成盾构机掘进过程中堵转停机的直接原因，考虑盾构机刀盘驱动变频调速电机特性、转矩传递过程中齿轮啮合刚度及齿侧间隙等非线性因素，建立冗余驱动的盾构机刀盘切削系统机电耦合动力学模型；针对典型复合地层地质条件，对盾构机在上软下硬地层掘进过程中刀盘驱动转矩动态特性进行仿真分析。

Based on the characters of positive cyclothem reservoir formation of fluvial facies a conceptive model is founded. Using the technique of reservoir simulation the prediction formulas of bottom-water drive reservoir are obtained.

5以河流相沉积的馆陶组储层底水油藏为原型，建立了地质概念模型，采用数值模拟技术进行计算、统计、分析，建立了水平井产能预测模型以及水平井产能递减预测模型。

S-Transform;Time-frequency analysis;Surface wave suppression;First-break picking;geological cyclothem bodies;seismic facies;cave abnormal detection

论文导师顾汉明，论文学位硕士，论文专业地球探测与信息技术论文单位中国地质大学，点击次数 29，论文页数 55页File Size3798K

However, dawsonite can be acted as trace mineral suggesting migration or accumulation of fluids with abundant carbon dioxide to whatever origin it belongs. In geological background, occurrence or enrichment of dawsonite indicates that migration or accumulation of carbon dioxide with large scale has happened.

然而，不论源于有机成因CO2气还是无机成因CO2气，片钠铝石均可作为富CO2流体运移或聚集的"示踪矿物"，地质过程中片钠铝石的出现或富集表明该区曾存在大量CO2运移或聚集。

After excavation, the regularities can be found on landform characteristics and locations. In this paper the unloading phenomenon of Xiaowan is concluded into five types: step type, bend type, debark onion type, plate fracture type and floor heave type. Then the five types are analyzed by the methods of engineering geology and mechanics.

最终得到如下结论：①小湾坝基开挖卸荷现象表现出多样性，并且在地貌特征和发生位置上具有明显的规律性；②结合河谷应力场特征，对小湾坝基开挖卸荷现象进行分析，并相应地提出了剪胀、纵弯曲张裂、错动板裂和上拱张裂等力学模式，合理地解释了小湾坝基开挖产生的卸荷现象；③板裂现象是高应力区发现的一种比较特殊的卸荷现象，它的产生需要比较苛刻的地质和力学条件。

New mathematical theory and Windows operation system character are adopted in the rock NMR decay curve's relaxation spectroscopy analysis software system. It is more useful in rock NMR analysis than the analysis software supplied with RiNMR system when rock samples are often measured in laboratory.

原MARAN-2随机的谱分析软件由于没提供源代码，许多参数的设置带有相当的经验性，而使用自己研究编制的软件对处理参数设置则有确切的理解，且增加了地质参数拟合软件包，更贴近于实验室面向岩样分析的特点和油田实际用户的要求。

Seismic formation velocity is one of important parameters for formation pressure prediction ,its precision affect the accuracy of the pressure prediction defectively.

由于地震层速度是地层压力预测的重要参数，其精度直接影响着压力预测的精度，利用测井约束下的波阻抗反演方法将测井、地震和地质解释成果结合获取较高精度的地震层速度，达到提高地层压力预测精度的目的。

To saturated and soft loess foundation , the poprote ratio and deformation is big, the compressibility is high, the strength is low, the time before it steady is long.

本文针对西安地区的工程地质问题，重点论述了湿陷性黄土地基和饱和软黄土地基的特性及地基处理方法。

Through the analyses of condition, the geologic background and the hydrochemistry and the isotope of the carbon and helium of the typical hot springs in the southwest of China, the general rules of the CO2 degasification points in the southwest of china are explored and the CO2 degasification is calculated on the whole.According to the results of wa...

通过对中国西南地区典型温泉的地质背景、环境条件、水化学及碳、氮稳定同位素的分析，探讨了中国西南地区深大断裂出露温泉CO2释放的一般规律，并进行了初步的释放量计算。

The present project of "deepsea processes and records" targets at the ignored aspects of the theory. Combining the geological records with climatic numerical modeling, we recognized the stepwise process of development of the "Western Pacific Warm Pool" and the East Asian monsoon system, and found that the sea surface warming in the Warm Pool was leading the melting process of the boreal icesheet during the deglaciation.

本项目以"西太平洋暖池"为重点，通过地质资料和气候数值模拟的结合，揭示了"西太平洋暖池"和东亚季风发育的阶段性，发现了暖池海区冰消期表层水升温超前于北半球冰盖的融化。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新