Eolian processes in alpine belts of the high Tatra mountains,Poland

Eolian processes were the subject of detailed studies in the high-mountain area of the Tatra Mts. The field investigations in 1975–80 attempted to determine the amount of deflation and eolian deposition and to improve understanding of their mechanism. The net rates of these processes were determined from repeated survey of deflational forms and of eolian deposits. Observations of the mechanism of material displacement were based on field experiments carried out during strong winds. All the investigations were conducted using simple methods and traps. Relationships between the course and intensity of processes and wind conditions and soil properties were obtained.     

Roof bolting in underground mining: a state-of-the-art review

Conclusions With continuing investigations and developments, roof bolting today can in most cases successfully reinforce the mine roof in underground mining. In order to cope with the increasing use of roof bolts, efforts should be made to maximize the safety and minimize the cost. With regard to mechanical bolting, two important parameters need more advanced improvements and study, namely, optimum design of the shape and type of expansion shell and optimum bolt tension for a specific bolt pattern. For the fully grouted resin bolt, the most critical requirement is to develop a fast-setting, low-cost, intoxic, inflammable grouting material that can be used in the high speed mining cycle. It should be noted that geological conditions such as the strata type, rock properties,in situ stress, and planes of weakness play an important role in the successful application of any roof bolting system. These factors should be specified as accurately and quantitatively as possible in the design of any roof bolting system. Finally, proper and careful installation and continuous monitoring are imperative for the success of any roof bolting system.     

A generalized probabilistic approach for slope analysis: practical application to an open pit iron ore mine

Summary An example of the generalized probabilistic approach to slope analysis is given through a case study on an iron ore mine. A step by step engineering procedure is described, so that a practical application can be made to other structures under different field conditions.     

临涣矿区水化学特征及在矿井水源判别中的意义

通过分析、比较临涣矿区三个地下水子系统的水文地球化学特征得出，这三个子系统在水溶标型发及少、微量元素的含量上无明显差别，表明各子系统间存在水力联系，而环境同位素氘和＾１８Ｏ分析则是解决矿井水来源判别的有效方法。     

平顶山矿区钻探泥浆的研究

介绍了平顶山矿区地质特征、钻孔护壁概况和５种不同体系泥浆的组成特点、配方及性能参数；对泥浆的密度与固相含量、粘度与流变特性、滤水特性及防涌防漏的主要技术性能和作用机理进行了探讨；综合分析了各类泥浆的钻进技术效果和经济效益。     

塔里木盆地北部油气田水文地质及水文地球化学特征

以实测的流体资料为基础，初步揭示了塔北地区油田水文地质和水文地球化学特征。塔北地区存在两股地下水流，南部生油区为压实水流，由南向北流动，北部为重力水流，由北向南流动，这两股水流交汇于雅克拉和轮南地区，向上封闭式内泄。无论重力水流或压实水流，皆为非海相成因、非浓缩成因溶滤水。表明：油气藏的形成绝大部分是寒武－奥陶纪生油层二次成油的结果。     

多因素模糊综合评价预测油气田远景区的研究

在ＧＩＳ支持下，本文设计了“分层建模，逐层评价，综合预测”的新思路，新方法，研究和建立了物、化探数字异常模型、多因素直接加权模型，多因素模糊综合评价预测模型。这对全面揭示各种异常分布特征与隐伏油气田和地质构造的，对指导生产、辅决策、确定油气田远景提供了很有前景的手段。     

江西省九瑞地区金矿床类型、主要特征、成矿序列及控矿因素探讨

九瑞地区是江西重要的内生金属成矿区之一。本文综合分析了近年来区内找矿科研工作的资料;划分了区内金矿的类型、成矿序列;简述了主要类型代表性矿床的地质特征。在此基础上探讨了区内地层、构造、岩浆岩对金矿的控制作用及时间上的分布规律,指出工志留纪、泥盆纪、石炭纪和二叠纪为金矿成矿的预基期,侏罗纪、白垩纪为主导期,第四纪为改造期,以及在各个时期金的成矿作用各具特色、渐次叠加发展、富集的规律。     

环境同位素法在西北地区地下水资源评价中的应用

应用环境同位素方法测定了不同类型地下水的年龄，识别了西北干旱、半干旱地区地下水的补给源，进行了补给量的计算，建立了地下水流系统，并取得了新的成果。     

茂兴地区杨大城子油层砂体沉积环境特征及分析

在对岩心详细观察的基础上，通过时研究区杨大城子油层沉积物的结构、构造、颜色、组合韵律、垂向序列、电性响应、砂体平面展布特征的综合分析，认为研究区杨大城子油层总体上是－套河流相沉积。作为油气储集层的砂体主要是点坝砂体。