沉积作用水文地质期沉积水运移的阶段性

根据沉积水所承受的负载种类，把沉积作用水文地质期分为静水压力阶段，异常压力阶段及压实平衡阶段；讨论了各阶段沉积水的运移特征，沉积物释水过程及孔隙度，透水性的变化特点，对一些传统的水文地质研究方法提出了不同的意见。     

利用α测氡技术寻找地下水

CD- 1α杯法测氡技术是近年研究发展的新一代核地球物理方法技术 ,目前在找寻地下水 ,探测断裂地质构造、解决工程地质问题等领域得到了较成功的应用。该方法较好地解决了静电 α卡法及其它放射性测氡方法在使用中存在的不足之处 ,更为合理有效     

Research on the Terrane Tectonics in China

This paper summarizes the latest advances in research on the terrane tectonics of China.The terranes of China distributed around various plates may be divided into four terrane belts of different ages and sizes.i.e.,the East China,Northwest China,Southwest China and Qilling-Dabie terrane belts.Among them,the East China belt may be subdivided into three composite terrane groups;each terrane proup is composed of several terranes that were formed roughly at the same time and have distince geologic histories.The accretion of China‘s terranes involver three types;the collision type,the flake-thrusting type,and the docking type.The results of the lates study in the five widening fields and some advances in the methods of research on the terrane tectonics in China are presented in the present paper.     

天山南坡表土孢粉分析及其与植被的数量关系

本文通过对天山南坡各植被带的表土孢粉分析，研究了主要植物花粉的百分含量与其相应樾物盖度之间的数量关系，计算出不同植被带中主要植物的Ｒ值之比的比值。     

黄土地区气候演变的有机地球化学标志

对渭南阳敦黄土剖面Ｓｏ￣Ｌ２层段作了总有机碳（ＴＯＣ）和Ｒｏｃｋ－Ｅｖａｌ热解烃分析，建立了ＴＯＣ气候变化曲线及其变化周期，与其它气候指标进行了对比，揭示了黄土剖面中与气候变化有关的两种烃类，推导并验证了古湿度公式，计算了各层段的湿度分布及其演变趋势。     

物理量图形在暴雨分析中的应用

通过“面拟合物理蛳诊断和三维图形显示系统”获得适合华东区域使用的多种物理量咕维图形，摸索用立体图形制作天然气预报的着眼点，初步分析表明物理量立体图是有非常广阔应用前景的工具之一。     

平凉地区强对流钩状回波特征的观测研究

最近10年平凉地区人工防雹试验期间，用雷达测到的强对流雷暴云回波上，发现雹暴云除有强度和云高作判别外，在回波形态和结构上，多数雹云在发展过程中呈气旋形回波形状，其中部分强雹云演变成明显钩状回波，少数特强雹暴云有反气旋钩状回波，并向气旋钩状演变的特点。在钩状回波形成和维持阶段，回波反射率Ze达到最强，之后不再增加，有些钩状回波的云高有时可跃增1～3 km高度，云体出现崩溃，地面有降雹。针对这些观测事实，本文用多年回波资料进行一些统计分析。     

矿山开采变形观测的动态数据处理

根据随机介质理论可以导出开采引起的地表动态变形表达式。本文利用该式建立了适合动态数据处理的两种滤波模型,并把变形表达式中各参数扩充为滤波模型中的状态向量同时进行估计。两种模型的动态预报精度均高于传统方法,其中自适应模型更能明显改善预报精度。     

The Two-Dimensional Nonlinear FEM Analyses for the Diversion Tunnel on the Right Bank of Ertan Project

The two-dimensional nonlinear FEM results for Ertan project were introduced in this paper, which were analyses on the section 0+679m of the diversion tunnel on the right bank. The influence of the variation of rock properties on the stability of the tunnel and the role of step-by-step excavation and shotcrete and rock bolting were emphasized here. Some suggestions on construction were given. The paper is useful to the preliminary designs and construction for the diversion tunnel on the right bank.     

Intraplate seismotectonic features of North China

Intraplate earthquakes in North China are characterized by shallow depth, large magnitude and high frequency. Obviously, the zonal distribution of earthquakes is closely related to recent active faults and Cenozoic graben and rift systems.The active faults are mainly oriented NNE with right-lateral movements, and partially oriented NW with left-lateral movements.The Hetao-Yinchuan graben, Fenhe-Weihe graben and North China Plain rift systems often reflect crustal thinning and mantle uplift.According to the data concerning crustal deformation, particularly the movement patterns of faulting, crustal taphrogenesis and earthquake surface rupture, it is suggested that a shearing-extension mechanism could be considered as a cause of the formation of seismotectonic structures in North China since the Early Cenozoic Era.Graben and rift systems also developed in Northeast and South China. They formed earlier than the graben and rift systems in North China, however, and their activity has decreased during the Quaternary period. It is reasonable that the seismicity in Northeast and South China is not as strong as that in North China.