深海底钻机自动接杆卸杆储管机构

本文介绍了一种深海底使用的钻杆钻具储管机构的工作原理和结构特点。按照深海底钻孔工艺,设计了自动接杆、卸杆、存储机构。这一种机构采用两个单排转笼式储管架,分别存放钻杆和钻具管组件。每一个储管架各配备一双机械手,用于夹持钻杆和钻具在孔口位和储管架管口位之间的移送和卡紧定位。该机构可靠性高,取心率高,结构简单,方便操作。     

最优子集的神经网络预报建模研究

作者尝试用最优子集方法进行神经网络长期预报模型的建模方法研究。结果表明,在很多情况下,由于最优子集方法比逐步回归方法能选取更好的预报因子,因此所构造的神经网络预报模型具有更好的拟合和预报效果,这为神经网络在长期预报的应用研究提供了新的思路和方法。     

黄山雪、雨凇和雾凇的气候特征

用黄山１９５６￣１９９６年气象资料,分析讨论了黄山雪,雨凇和雾凇的气候特点。结果表明：（１）年降雪日数,雨凇日数和雾凇日数均为多波振动的时间演变规律,年际变化具有阶段性,并存在准１２年周期的低频振荡。     

翡翠绿色的定量评定

目前对翡翠颜色的定名多以所见实物或多年沿袭下来的俗称以形象描绘。对翡翠颜色的评价则是以“柔和悦目”和“引人喜爱”为标准。本文在前人研究的基础上,以色度学理论为基础,以ＰｈｏｔｏＳｈｏｐ软件为工具,对翡翠绿色定量划分与评定进行初步探讨。１　色度学及ＰｈｏｔｏＳｔｈｏｐ的颜色理论色度学［１］是研究颜色和评价颜色的一门学科。一般选用红、绿、蓝三色作为原色,三原色按不同比例配合成各种颜色。颜色给人的感觉,可因人的主观因素或光源的不同色调叠加而发生变化。但就颜色本身而论,其特征决定于色调（Ｈ）、饱和度（Ｓ…     

从岩相古地理论中国南方石炭系油气潜景

石炭系是中国南方重要的海相含油气地层之一。下石炭统的油气生成条件比上石炭统的好,这和早石炭世的盆地面积较大有关。石炭系下伏的志留系和上覆的二叠系的油气生成条件比石炭系还要好。上石炭统的油气储集条件比下石炭统的好,这和上石炭统的白云岩和滩相石灰岩分布较广有关。石炭系油气藏的直接盖层是下二叠统下部的梁山组,区域盖层是中新生代的泥岩为主的地层。南方石炭系油气生储盖条件的配置关系相当好。但是,南方石炭系以及整个古生代和三叠纪海相地层均经历了多次大的构造变动,其油气藏形成条件遭受相当大的破坏。在有利的生储配置关系的基础上,在区域盖层和保存条件较好的及面积较大的中新生代沉积盆地中,尤其是在邻近石炭系本身或其下伏志留系油气源岩的地区,是寻找和发现石炭系新的油气藏的有利地区。     

Preliminary study on development characteristics of planation surface in Liaodong Peninsula

Planation surface is one that is associated with long-term stable tectonic environment of large scale landscape. The planation surface with the weathering crust as a whole to study is the main stream of modern planation surface research. The red weathering crust mainly is outcropped in the east and west of Liaodong Peninsula,and its thickness is around 4 m. In order to explore the properties,environment and development characteristics of the planation surface in Liaodong Peninsula,chemical elements and particle size characteristics of red weathering crust in this area were studied. The test results showed that the average value of CIA of the red weathering crust in the study area is 82.70,the average value of ba((Na₂O+K₂O+CaO+MgO)/Al₂O₃)is 0.39,the average value of S/A(SiO₂/Al₂O₃)is 4.86,and the average value of clay content is 8.31%. Compared with the red weathering crust of the karst area in the south of China,it has the characteristics of low leaching rate of salt base,low aluminization degree and weak viscosification. According to the regional geomorphologic features,the development of red weathering crust in the study area mainly went through four stages: (1)karst process was carried out in the whole rock mass above the base level of ancient erosion,and the geomorphologic fluctuation gradually increased;(2)geomorphologic fluctuation reached the maximum,and covered karst and gray weathering crust began to develop;(3)karst double-layer planation surface basically formed;(4)the development of gray weathering crust nearly stopped. With the tectonic movement,the gray weathering crust,which was originally located below the base level of ancient erosion,was all elevated above the base level of modern erosion to form red weathering crust. Therefore,the planation surface in the study area is ancient planation surface,and the development stage is lateralization stage. The results can provide a preliminary basis for revealing the neotectonic movement and sea level change in the Liaodong Peninsula from the Neogene to present.     

Coupling between metallogenesis of the Cryogenian Datangpo-type manganese deposit in South China and major geological events

The exploration of the Cryogenian manganese deposits in the Datangpo Formation of South China has achieved great progress in recent years. It is concern in the long term there are many studies on this manganese deposits due to its particularity in the temporal and spatial distribution and the mineralization background. In this paper,we systematically summarize the previous achievements on the Datangpo-type manganese deposits. Besides,we also review current findings of Neoproterozoic global geotectonics,palaeoclimate evolution,ancient marine chemistry,and microbial evolution etc. The possible linkage between the massive metallogenesis of the Cryogenian Datangpo manganese deposits in the South China and Neoproterozoic major geological events is established. The break-up of Rodinia supercontinent led to the widespread rift basin systems in the world since the Middle Neoproterozoic. The Nanhua Basin in South China,which is a manganese-forming sedimentary basin,developed from the rift basin. The rift basin provided space for manganese deposits and controlled the distribution of manganese deposit. The hydrothermal activities at the bottom of the basin provided favorable manganese source. During the Neoproterozoic ice period(“Snowball Earth”event),global ice-sheets cut off or hindered exchanges of mass and energy between different spheres of Earth,which may lead to the widespread anoxic condition in the ice age ocean. The palaeoclimate changes during the glacial-interglacial period led to the disappearance of ice-sheets and the triggering of mass and energy exchanges between different sub-systems of Earth,followed by the variation of redox condition of the ancient sea. For the Nanhua Basin,the oxidation of surface water and the oxygen-bearing base flow provided the oxidation environment for the precipitation of manganese. Besides,new evidence indicated that manganese microbiological mineralization was the potential mechanism for manganese deposit under the microbial resuscitation condition during the interglacial period. All these major geological events have complicated connections and they provided essential metallogenic conditions for the sedimentary mineralization of “Datangpo”manganese deposit. It is believed that there is a coupling between the sedimentary metallogenesis of the Cryogenian Datangpo-type manganese deposit in South China and Neoproterozoic major geological events.     

水性多彩涂料的制备工艺研究

阐述了改性聚乙烯醇胶水的制备工艺,并以此作彩粒成型剂,应用羟乙基纤维素———膨润土复合增稠剂作抗沉剂和稳定剂,与苯丙乳液等成膜剂、无机颜料等制成无毒、阻燃的水性多彩涂料。     

斜长石组构的显微测量方法及应用

介绍了目前国外用费氏台测量斜长石组构的三种方法：（１）ＢＰＷ图解法;（２）（０１０）,（００１）双面交点法;（３）（０１０）消光角法;并分析了其适用范围及各自的优缺点。最后总结了确定斜长石组构的应用意义;（１）确定滑移系;（２）判断剪切方向;（３）计算地震波速。     

二朗山公路隧道岩爆特征与预测研究

根据二郎山公路隧道施工中记录的２００多次岩爆资料,总结隧道的岩爆特征,并采用“地质超前预报法”和“σθ／Ｒｂ判断现场测定预测法”两种方法,对岩爆预测问题进行有益探讨。