水盐体系溶解度计算中的电解质溶液Pitzer模型

水盐体系溶解度的理论计算，由于受电解南浓液理论发展的制约，长时间以来未能得到解决，１９７３年Ｐｉｔｚｅｒ提出了电解质溶液热力学模型，这是一种半经验的统计力学模型，可以处理从很稀直至高浓度范围的电解质溶液。本文作者从七十年代末开始利用此模型于有关盐湖卤水的溶解度计算。本文介绍利用Ｐｉｔｚｅｒ电解质溶液热力学模型进行水盐体系溶解度计算的有关问题，以及作者们近年来在北领域的研究工作概况。其中包括含锂盐浓     

地质学家重视研究深部（变质）CO_2对古气候的影响

地质学家重视研究深部（变质）ＣＯ２对古气候的影响贾跃明（中国地质矿产信息研究院，北京，１０００３７）近几年来，随着过去全球变化研究的兴起，地质学家越来越重视地质历史时期影响大气ＣＯ２浓度的因素的调查。不少人认为，变质作用和火山活动可能是过去大气中ＣＯ...     

单一流迳基岩水流平均流速方程

分析了基岩水运动时的几种主要水头损失，建立了单一流迳基岩无压水和承压水运动的平均流速方程，并进行了室内试验的验证。     

高速水动力强噪声下的特殊滤波技术

高速水动力强噪声下的特殊滤波技术黄济，黄述平（湖南邵了水文水资源勘测局）用超声波测河水流速，在低速时，用一般文献中所介绍的间接判真技术是完全可行的。但在高速水动力强噪声情况下，这一方法都先后遭到了失败。笔者通过不断探索，对其进行分析，提出了解决问题的...     

The Confirmation of a New Type of Chondrites and Their Cosmochemical Significance

The data available show that some Antarctic carbonaceous chondrites are similar to Cl meteorites.Tehy contain a lot of phyllosilicate aggregates and the oxygen isotopic composition of the whole-rock samples is approximate to that of C1 chondrites,so they are named after quasi-C1(Q-C1)chondrites Unlike Cl metcorites,the Q-Cl chondites possess chondrule structrue,and the compositions of hih temperature condensates(chondrule fragments,mineral grains or aggregates)show that the oxygen fugacity varied within a wide range in the surroundings where they were formed,similar to the variation range from E.H.L,LL to C group chondrites.It is inferred that the Q-C1 chondrites could be formed at the edges far from the equator in the whole asteroid region of the solar nebular disk.where the nebula was lower in density and the condensates were lower in accretion velocity,so that the hydration of chon drules and matrix occurred during the late stage of nebular condensation.The discovery of the Q-Cl chondrites and the fact that the earth and other terrestrial planets contain water indicate that at the edges far from the equator in the terrestrial reigion of the solar nebular disk,a large amount of water was incorporated into the lattice of minerals in the condensates as a result of hydration during nebular condensation,and then found its way into the interior parts of the Earth and other terrestrial planets due to accretion.     

杨溪岩体中黑云母的特征及其地质意义

杨溪岩体黑云母为１Ｍ型的铁质黑云母，其特征说明岩体为壳源改造型花岗岩，但有幔源物质混入。离铌钽矿化点较近的黑云母表现出明显富铝、多锰、贫镁、少硅、少钛的特点。离白钨矿矿区较近的黑云母与远离矿区的黑云母在特征上差别不大，说明杨溪岩体黑云母的特征变化对成矿影响不大，但岩浆活动是重要的成矿因素之一。     

The Microarea Composition of Garnet and Biotite from the Ji‘an Group in Tonghua District and Its Significance as an Indicator of Metamorphic P—T—t Path

The garnet(Grt)and biotite(Bt) from gneisses of the Ji‘an Group are characterized by diffusion zoning at the rim,but equilibrium composition of metamorphic peak is usually remained in extensive interior area.Garnet with growth zoning is also found in the kyanite zone.In the light of microarea compositional variation of Grt and Bt,the temperature and pressure at the progressive,peak and post-peak metamorphic stages are determined by correctly using Grt Bt thermometer and GASP barometer.On this basis,a counterclockwise P-T-t path can be constructed,which reflects the closing process of an ensialic rift belt in this region during the Early Proterozoic.     

研究底板突水的结构力学方法

介绍了研究底板突水的结构力学方法，并用极限弯矩的理论计算得出确定底板隔水层有效厚度之计算公式。     

判定地下水二维水动力弥散参数的直线图解法

弥散参数的求得，是正确认识地下水污染运移及对其控制的前提。本文根据极值理论和非线性方程线性化手段，导出了浓度和时间变化的线性关系，得出了确定弥散参数的直线图解法。它可以弥补其它方法的不足。借用实际弥散试验资料对其进行了检验，表明所建数学模型与实际模型之间吻合良好，即所求得的参数结果可信。