岩石的热模型分析

在几种岩石热辐射理论模型分析的基础上,考虑到岩石的红外光谱辐射特性和岩石的热性质──热惯量,建立岩石的热传输模型,并将实测数据代人,对岩石表面的一个日照周期内的变化做出计算,绘制出不同热惯量的几种岩石在日周期内表面温度变化曲线。由曲线看出,岩石热惯量大,其昼夜辐射温度变化小;热惯量小的岩石其昼夜辐射温差大。改变岩石的反照率、辐射系数和地面径向热流而得到岩石表面温度日变化曲线,可看出这３个因素只是改变了温度的量值,不像热惯量那样改变曲线的形状。     

庚村和黄双岭萤石矿同位素地球化学特征

文章详细研究庚村和黄双岭萤石矿的同位素分析结果,得出如下主要结论;成矿溶液来源于当地中生代大气降水：Ｓｒ,Ｂａ,Ｃａ来源于强蚀变的围岩;矿液中存在有ＨＦ和ＳｉＦ４;成矿过程氢,硫同位素出现交换动力学效应,庚村和黄双岭萤石矿的成矿年龄分别接近８４Ｍａ和１０７Ｍａ。     

西沙群岛西琛一井礁序列成岩作用研究

西琛一井０－４００米段是西沙礁序列研究内容最丰富，实验分析最多的全取芯钻 ，通过薄征观察，电子探针分析，不同井深单一属腹足类壳体，同一深度不同沉积物的碳 ，氧稳定同位素测定和Ｍｇ／Ｃａ，Ｍｇ／Ｓｒ分析，对西琛一礁序成岩体环境，作用性质及其特征，进行了全面系统的论述，并提出了泥晶套的非藻类穿忆和白云石化的非混合水成因素。     

The influence of microcrack density on the elastic and fracture mechanical properties of Stripa granite

Microcracks can have a strong influence on the elastic and fracture mechanical properties of rocks if they are numerous, or if they are orientated in unfavourable directions in anisotropic rocks in particular. This paper presents results from a great number of mechanical tests on Stripa granite containing various amounts of microcracks. Variations in the microcrack density were obtained by shock-heating the rock at different temperatures in the range 100–600°C for 3 h.The results presented are obtained from sound velocity measurements, uniaxial compression tests, Brazilian tests and three-point bending tests. The density of microcracks in the heated rock is studied by means of optical microscopy, SEM and differential strain analysis (DSA).Some of the calculated parameters show a maximum value for specimens heat-treated at about 100°C. The tensile strength is, for instance, substantially higher for specimens shock-heated at 100°C than for non-heated ones. Another striking feature is the initial decrease of the diameter observed in specimens heat-treated at 600°C when loaded in uniaxial compression. Both optical microscopy and DSA experiments reveal a large increase in microcracking when the heat-treatment temperature exceeds 300°C.     

"南水北调"西线工程对地质环境影响和对策

以四川西部高原地质环境脆弱为据，提出了“南水北调”西线工程应引以重视的地质环境问题，并以科学发展观提出了对策。     

复杂岩性储层参数评价中神经网络技术的应用

在复杂岩性储层中，储层四性关系比较复杂，表现为非线性，用传统的方法已经难以解决这类问题，为此引入了目前比较流行的人工神经网络技术、在前人基础上，以SN油田9井区为例进行储层研究工作，该区非均质性比较强，经对该区364口井常规到井资料进行储层参数重新解释，并做平面展布，与实际资料吻合较好。由此表明，神经网络技术在解决非线性问题上表现出了较大的优越性，值得我们做进一步的研究工作。     

在二维应力状态下土体地震动偏应力的特征

地震作用在土体中产生的动偏应力包括动水平剪应力τｖｈ 和动正应力差［σｐ － σｈ］ ／２ 。本文讨论了这两种动偏应力分量之间相互变化的关系     

Extraction of Lithium from Salt Lake Brine using N523-TBP Mixture System

In this work, problems encountered by tri-butyl phosphate (TBP) in the industrialization of lithium extraction from salt lake brine were discussed in detail. The lithium extraction behavior of N, N-bi-(2-ethylhexyl) acetamide (N523) was investigated, and its defect was analyzed in the view of practical application. The N523-TBP mixture extraction system was proposed to alleviate or avoid the defects that N523 and TBP met when they were used severally. The composition of this mixture extraction system was determined as 20%N523-30%TBP-50% kerosene. The effects of brine acidity, Fe/Li molarity ratio, phase ratio and chloride ion concentration on lithium extraction efficiency were discussed respectively. The operation conditions in single stage extraction were optimized as brine acidity=0.05 mol/L, Fe/Li molarity ratio=1.3 and phase ratio=2. The high concentration of chloride ion in brine was benefit for extraction of lithium. The structure of extracted complex was proposed as (LiFeCl4·nN523·mTBP)·(2-n)N523·(2-m)TBP (m+n=2) by chemical analysis and slope fitting methods. The extraction thermodynamic functions were calculated preliminarily, and the results suggested that the extraction process was an exothermic (ΔH<0) and spontaneous (ΔG<0) reaction, and the degree of disorder increased (ΔS>0) during the extraction process. This work will give some guidance to the lithium industry of Qinghai in both fundamental theory and practical application.     

南黄海东侧陆架冰消期以来的海侵沉积特征

根据浅地层剖面，海底地貌，柱状样和对钻孔岩心的分析测试数据，论述了南黄海东侧陆架冰消期以来的沉积特征。在冰消期海侵的初期，海水对南黄海东侧陆架早期沉积物的侵蚀和改造形成了滞留砂砾层，席状砂和潮流沙脊。随着海面的上升和海侵范围的扩大，黄海暖流形成并由于它的驱动在南黄海东侧陆架的南部发育涡旋而形成厚层质沉积，而在北部则形成潮上带－潮坪－浅海沉积序列。     

1997年8月台湾浅滩南部边缘海域主要光学要素的多周日变化分析

通过对１９９７年８月中旬在台湾浅滩南部边缘海域所获得的光学参数数据进行分析,对水下辐照度、光束衰减率和光束透射率等主要光学参数的多周日变化规律及其形成机制进行了探讨。认为调查期间,台湾浅滩南部的水下辐照度自上而下表现出了很好的规律性和一致性,各层的辐照度随时间峰谷型分布,与太阳辐射强度规律符合得较好;不同时刻的光束衰减率的垂直分布相似,往往在３０ｍ层上下出现一个峰值。光束透射率与光束衰减率存在反相