裘布依公式的水文地质化学动力学形式

以水文地质化学动力学方程为基础,承压含水层稳定流为例,推演了由水化学指标表示的一维和二维稳定井流的裘布依公式。在讨论化学指标表示的裘布依公式与原公式关系的基础上,结合水文地质、水文地球化学综合模型,讨论和写出不同区带、各种矿物及相应组分化学指标表示的基本方程式。以山西晋城市新矿区抽水试验及相应的水化学指标,讨论了计算步骤和方法。最后讨论了这类公式可以扩展到潜水及非稳定流各种井、渠公式中,以及用水化学指标表示公式的某些实际意义。     

裘布依地下水井流计算公式有关问题讨论

在长期的实际工作中发现,抽水井口径对抽水试验成果存在较大影响、传统的裘布依井流公式对井涌水量和水文地质参数计算结果与实际情况偏差较大。本文以不同水文地质条件下岩溶含水层中井抽水试验成果资料为依据,通过统计分析,揭示了井径与井涌水量以及含水层水文参数计算成果之间的相关关系,探讨了裘布依井流计算公式在理论和实践上存在的问题...     

基于不同孔径钻孔抽水试验求参对比分析

抽水试验是确定含水层水文地质参数,了解水文地质条件的主要方法。水文地质参数计算的精度直接关系到地下水资源评价精度和对区域水文地质条件的认识程度。基于野外抽水试验数据,通过裘布依稳定井流公式法和含水层试验软件Aquifer test计算水文地质参数,将计算结果作比较,以期得到更加精确的水文地质参数。虽然裘布依稳定井流法计算简便,但对水文地质条件概化处理,使得参数计算结果与实际值相差较大;而Aquifer test软件基于严谨的非稳定流理论数学模型,求参准确性相对较高,操作方法简捷。     

流量测井理论基础及其在水文地质工作中的应用

文章概略地讨论了流量测井的物理基础,提出了流量测井唯一性定理,及利用一次混合抽水求取孔内各含水层水文地质参数的水文地质理论,并以实例为基础,讨论了流量测井的技术优势和经济潜力。自法国著名水动力学专家裘布依提出裘布依假设和裘布依公式以后,单层抽注水试验成为各国水文地质工作者评价含水层水动力学参数的主要方法。近百年来的实践证明,这种方法不仅费工、费财、耗费大量能源,而且所获资料并不准确。1978年以来,我们对流量测井理论、仪器及方法技术的研究,正是针对上述问题进行的。六年来的研究工作及大量野外试验证明,流量测并具有较大的技术优势。     

基岩裂隙区单孔抽水试验渗透系数对比分析

渗透系数的求取量化是水文地质和工程地质工作广为利用的一种方法。本文针对巢湖市地质疗养院一带基岩裂隙分布区的单孔抽水试验资料,分别使用裘布依公式和水位恢复法对渗透系数进行了计算,结果显示：用裘布依公式得到的平均渗透系数为0.144538 m/d,用水位恢复法测得渗透系数为0.142659 m/d。通过实验对比分析,得出水位恢复阶段求取渗透系数比稳定流水位恒定阶段精度高。     

数值法对水文地质勘探工作的要求

数值法应用于水文地质计算是一种新方法。它以地下水非稳定流理论为基础,从整个计算区域的水文地质条件出发,建立能表明计算区域的地下水运动规律的数学模型,用计算机求出数值解。数值法作为一种新的地下水计算方法,就要有新的水文地质勘探方法相适应,提出相应的水文地质资料。稳定流抽水试验是以裘布依公式为基础进行地下水计算、评价,而不计     

稳定流裘布依公式对误差的传递作用雏议

地下水稳定流是地下水运动的主要形式之一。作者以稳定流理论的裘布依公式为代表，将带有误差的水位降代入裘氏模型求解，公式本身对误差的传递，本文作了一些初步的探讨，这对在实际工作中提高救布依求解水文地质参数，进行水位预报等的精确度，是大有益处的。     

裘布依公式与泰斯公式中渗透系数间的关系

抽水试验分析理论可分为稳定流理论和非稳定流理论两大类,而这两大类理论又分别以裘布依公式和泰斯公式为代表。裘布依公式以简单易懂,使用方便     

根据群孔抽水试验资料用比拟法计算矿坑涌水量

在矿床水文地质勘探中,计算矿坑涌水量是个重要内容。它既是一切矿床水文地质勘探工作的归宿,也是用各种勘探技术所取得的各项水文地质参数的反馈。该项工作虽然如此重要,但是至今未能圆满解决。无论以稳定流为基础的裘布依系列公式,还是以非稳定流为基础的泰斯系列公式,来计算今后采矿区(坑)的涌水量,在公式的选择与计算结果上,都难     

井流模拟试验

为了解决水文地质教学与试验实习难的问题,依据井流理论设计和修建了大型的井流模拟试验场,作为水文地质试验实习基地。 本文详细叙述了模拟场的设计、修建、安装与试验。其是取园形海岛状含水层的四分之一,构成一个直角的扇形,直角边和模拟试验含水层的顶底板为隔水边界,扇形弧为供水边界。用裘布依公式和泰斯公式来解析稳定流抽水试验与非稳定流抽、放水试验,这对于解决水文地质试验具有很好的实用价值,并可作为模拟生产与科研有关的实际问题。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)