地磁偏角实时自动修正技术在油田定向钻井中的应用

在油田定向钻井的磁导向定位系统中，地磁偏角校正是一个不可缺少的基本要素，同时在磁偏角校正值精度直接影响定向井的导向定位精度。因此，作者提出了提高地磁偏角校正值精度的方法，并试图将地磁偏角实时自动修正技术引入我国油田定向钻井领域。     

黑龙江省冰雹天气气候特征及防雹预警指标

以统计的近40年冰雹资料为基础，分析了黑龙江省冰雹天气分布规律及近年冰雹气候特征的变化。利用天气系统背景、卫星云图、不稳定因子以及雷达回波等指标，为人工防雹天气时机选择和作业方案设计提供了综合预警指标，为省级防雹预警系统提供了新的更接近实况的科学预警依据。     

省级指导预报体系框架建设的基本思路和建议

在分析现行的预报逐级指导和省市县各级气象台(站)的优势与薄弱环节基础上，为 提高预报指导能力和解释应用能力，确定了省级指导预报产品的形式和内容；提出了逐级指 导技术体制和省市县分工合作、产品共享、减轻劳动强度、提高预报指导效率的方案。     

安全生产投入产出理论及模型研究

系统地阐述了安全生产投入产出理论，并借助经济学知识建立了全国安全生产投入产出表，求出了一系列的方程和系数，这对于政府和企业制定其合理、科学的安全生产政策具有一定的指导意义。     

地下工程震波技术与应用

激发的震波在工程岩土体中传播，检测其波动力学参数，来测试岩土体的工程力学性质。原位震波波速测试技术可以对井巷的岩体模量，支护选型，围岩性质进行检测；利用地震勘探，面波勘探方法可以对矿层厚度，超前探测等方面进行有效检测；震波CT、导波勘探等探测方法对于采面内的地质异常探测有较好的针对性；通过声发射检测技术可以解决地下工程安全问题。实际应用说明，震波探测技术从地下工程的开拓掘进，采场形成到采后管理等过程中有着广泛的应用前景。一些技术已作为地下工程中的日常工作加以应用，但进一步的生产应用还需深入研究。     

山门银矿地球化学特征及异常模式

本文着重论述了山门银矿地球化学特征;水系沉积物,土壤及原生地球化学异常特征和分带性。初步概括出山门银矿床地球化学异常模式及找矿标志。     

核安全导则中的地震震级划分意义

本文论述了我国核安全导则中对地震进行两级划分的意义,着重讨论了大震在选址地震工作中的作用。最后,结合我国地震条件提出了大震划分的起算标度。     

Evaluation of safety of hydraulic structures affected by migrating pits

Because it can be carried by flowing water, a sand/gravel pit on the river bed could migrate downstream. Consequently, the presence of pits on river beds could pose a safety threat to in-stream hydraulic structures such as bridge piers. A pit migration model can be used to predict progressive changes of pit geometry as it migrates downstream. However, due to the existence of many uncertainties, the maximum pit depth cannot be predicted with certainty. This paper adopted a simple pit migration model and evaluated the uncertainty associated with the calculated maximum pit depth. Such information is essential for evaluating the probability that a migrating pit could pose a safety threat to a downstream hydraulic structure. Three reliability analysis techniques were applied and their performances were compared.     

Influence of rainfall on the deformation and stability of a slope in overconsolidated clays: a case study

The behaviour of an instrumented unstable slope in a profile of weathered overconsolidated clay has been analysed. Available field investigation data and laboratory tests were integrated in a coupled hydromechanical model of the slope. Particular attention was given to the unsaturated soil conditions above the water table and to the influence of the rainfall record. Recorded pore-water pressures helped to identify the hydrogeological conditions of the slope. The coupled model was used to compute slope deformations and the variation of safety with time. Actual rainfall records were also integrated into the analysis. Comparison of measurements and calculations illustrate the nature of the slope instability and the complex relationships between mechanical and hydraulic factors. Electronic Publication     

陕西马元地区铅锌矿地质特征及找矿方向

陕西马元地区铅锌矿位于扬子地台北缘碑坝隆起东南缘一带。矿化带长大于60 km,宽10~200 m,可分为南、东、北三个铅锌矿化带,已圈出了40多条铅锌矿体。其中南矿化带长大于20 km,宽20~120 m,已圈出了40多条铅锌矿体;东矿化带长大于30 km,宽20~200 m,地表已发现7条铅锌矿体;北矿化带长大于10 km,宽10~100 m。矿体一般长100~2560 m,厚0.80~10.01 m,锌品位1.05%~10.82%,铅品位0.55%~7.54%。主矿体长2560 m,厚1.46~32.53 m,平均厚约7.60 m,最厚28.40 m,锌品位1.45%~11.42%,平均4.47%。矿化带主体由震旦系灯影组白云岩组成,产于灯影组的砾状白云质角砾岩带中。矿化主要受地层和构造的控制。经预测,陕西碑坝—马元、云河—庙坝、阳平关—宽川铺—阜川、司上—镇巴、镇坪及湖北竹溪、神农架、黄陵等地区有较好的找矿前景。