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1.
电测深法一般在水文地质、工程地质综合勘察中能取得较好的地质效果。为扩大其在成都平原水文地质工作中的效用,本文介绍试用电测深资料估算该平原上部含水层导水系数(T)及井位涌水量(O)0的初步成果。 相似文献
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本文根据淮北宿南矿区的电测深及水文地质资料,利用含水层的横向电阻(经地下水电阻率影响因素校正)与含水层导水系数的相关关系?)计算出含水层各测点的水文地质参数,并且绘制出矿区水文地质参数等值线图,提高水文电法勘探的地质效果。 相似文献
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利用电测深成果(含水层电阻率或地层因素)估算含水层渗透系数的问题,前人已做了很多工作[1,2].作者针对安阳市安阳河北水源地电测深资料的解释和水文地质勘察成果,提出采用电测深K型曲线极大值计算水文地质参数的方法,建立了ρs max～K之间的4种回归分析模型.结果表明,K与ρs max存在对数相关关系.经计算的成果图件(K、T等值线图)对评价该区水文地质条件,估算单井涌水量及水井位置选择等都具有十分重要的实用价值. 相似文献
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地下水矿化度是划分地下咸淡水的重要参数，过去人们常用手工计算。但由于涉及的参数众多，计算过程烦琐，人工计算不仅速度慢，而且容易出错。一种利用Visual Fortrain和C^ 编制的批量计算地下水矿化度的软件系统，可有效地解决这类烦恼。该系统根据事先由电(磁)测深资料反演出的真电阻率数据，借助水文地质资料划分出不同区块的孔隙度、水质类型及温度等参数，自行判别计算公式，在数秒内可算完一条电(磁)测深剖面下的地下水矿化度。经实际试算，效果令人满意。 相似文献
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任履兆 《水文地质工程地质》1984,(3)
长期以来,水文地质测井工作者都在不断地努力用各种方法试验、探讨解决有关水文地质参数问题,取得了一定的效果。但是,由于专用仪器设备欠缺,至今不能得到广泛的应当。介于目前实际测井技术条件,能不能用简单易行的测井方法解决水文地质的一些参数问题呢?参考有关资料,对近几年来豫北地区20多眼井的测井资料,经过综合整理分析,考察到导水系数(T)与横向电阻(R_T~1)之间存在着一定的联系,即它们的大小变化 相似文献
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本文介绍了在分析河北平原近三十年来所取得的丰富电测深和电测井资料基础上,结合水文地质和遥感资料进行综合研究,所总结出的第四系不同岩性沉积物、各种矿化度地下水、土壤积盐临界深度内不同程度盐渍化土的电性参数,以及利用物探资料解决河北平原浅层水文地质分区、山前平原浅层水富水性分区、查明咸水体分布规律、咸水区内浅层淡水发育情况及盐渍土分区范围等水文地质问题时,所取得的成果。反映了河北平原第四系含水综合地质体的区域性电性特征,显示了物探方法解决有关水文地质问题的良好应用效果。 相似文献
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曹丁涛 《水文地质工程地质》1989,(6):42-43
导水系数(或渗透系数)是水文地质计算这一重要参数的精度高低将直接导致矿坑涌水量计算或地下水资源评价的成败优劣。而采用哪一种试验手段和计算方法获得的导水系数精度较高呢?本文根据河南新乡地区水科所在新乡某地含水砂层中抽水试验的实际资料,用五种方法对导水系数进行了计算,并进而作了一些对比分析,供水文地质工作者参考。 相似文献
10.
淮北煤田松散层电性特征及富水性评价 总被引：1，自引：0，他引：1
根据淮北平原电测深资料结合钻探工作,评述了第四系松散层中砂质类和粘土类的电性特征及分布规律,对松散层中含水层各岩性的电性影响因素进行了分析,认为视电阻率与含砂量和颗粒度与正比,与矿化度成反比;介绍了含水层富水性特征参数的提取方法及电性参数与水文地质参数相关关系,认为视电阻率与含水层的渗透系数成正比.通过对电性资料的认识和区域水质资料的分析,获得了该区面积性水文地质参数.该区富水性评价成果已被实际水文地质资料验证. 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
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. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
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. 相似文献
13.
Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
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). 相似文献
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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 相似文献
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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), 相似文献
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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- 相似文献
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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- 相似文献
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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.) 相似文献
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正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861 相似文献