模拟水—岩作用的新方法     

郑西来 《地球科学与环境学报》1990,(3)

本文在详尽研究了山东铝厂碴场区地质、水文地质条件和水文地球化学环境的基础上,将地下水含水介质概化为一组矿物的集合体,把地下水和含水介质间的作用用一系列物理化学反应来加以描述。然后,根据“能量最低”和“物质守恒”原理建立线性规划数学模型,用单纯形法计算出了地下水和含水介质间的物流量。  相似文献   

施甸由旺镇岩层含水性及其开发     

李国昌 《云南地质》2004,23(3):390-394

由旺镇属于水源缺乏区,通过水文地质勘察,查明区内具有地下水赋存条件并具备供水条件。含水地层及水构造发育,有利于地下水富集。  相似文献   

The water-bearing numerical model and its operational forecasting experiments part ii: The operational forecasting experiments   总被引：1，自引：0，他引：1  

Xu Youping  Xia Daqing  Qian Yueying 《大气科学进展》1998,15(3):321-336

The water-bearing numerical model is undergone all round examinations during the operational forecasting ex-periments from 1994 to 1996. A lot of difficult problems arising from the model’s water-bearing are successfully re-solved in these experiments through developing and using a series of technical measures. The operational forecasting running of the water-bearing numerical model is realized stably and reliably, and satisfactory forecasts are obtained.  相似文献   

含水岩石摩擦滑动特征的初步研究     

明亮 《地震研究》1989,12(2):155-160

我们对含水岩石进行了双剪摩擦滑动实验。所用样品为济南辉长岩、周口店石灰岩,小浪底砂岩和点苍山大理岩。本实验得到的主要结果表明,水的存在增大了岩石的摩擦强度,减小了粘滑时的应力降和错距,促进了位移强化效应。这说明水对岩石摩擦的影响是一个复杂的问题。还应深入地研究。  相似文献   

The equation of state of Al,H-bearing SiO2 stishovite to 58 GPa     

Dmitry L. Lakshtanov  Carine B. Vanpeteghem  Jennifer M. Jackson  Jay D. Bass  Guoyin Shen  Vitali B. Prakapenka  Konstantin Litasov  Eiji Ohtani 《Physics and Chemistry of Minerals》2005,32(7):466-470

We have determined the P-V equation of state of Al-rich H-bearing SiO₂ stishovite by X-ray powder diffraction at pressures up to 58 GPa using synchrotron radiation. The sample contained 1.8 wt% Al₂O₃ and up to 500 ppm H₂O, and had a composition that would coexist with Mg-silicate perovskite in a subducted slab. By fitting a third-order Birch-Murnaghan equation of state to our compression data, we obtained a bulk modulus K _T0=298(7) GPa with K′=4.3(5). With K′ fixed to a value of 4, the bulk modulus K _T0=304(3) GPa. Our results indicate that Al³⁺ and H⁺ have a small effect on the elastic properties of stishovite. Compared with data obtained up to 43.8 GPa, peak intensities changed and we observed a decreased quality of fit to a tetragonal unit cell at pressures of 49 GPa and higher. These changes may be an indication that the rutile↔CaCl₂ transition occurs between these pressures. After laser annealing of the sample at 58.3(10) GPa and subsequent decompression to room conditions, the cell volume is the same as before compression, giving strong evidence that the composition of the recovered sample is also unchanged. This suggests that Al and H are retained in the sample under extreme P-T conditions and that stishovite can be an agent for transporting water to the deepest lower mantle.  相似文献