Determination of active units with different kinematic property and their activity pattern in North China based on the data from GPS remeasurements

IntroductionWith the most feasible and powerful technical support provided by the high-precision GPS measurement for the study on horizontal crustal deformation, the obtainment of various-scale horizontal movement data and its study over the whole world is now in the ascendant, and its applicable fields is now expanding successively. In China, besides the GPS monitoring networks for different applications arranged by many agencies and departments, the key scientific project Crustal Movement…     

Model of rigid and elastic-plastic motion in intraplate blocks and strain status of principal blocks in Chinese mainland

Introduction The Chinese mainland is located in the southeastern part of Eurasia plate and encircled by India, Eurasia, Pacific and Philippine Sea plates. It is one of areas with the strongest tectonic de-formation, especially Qingzang (QinghaiXizang) plateau and NS tectonic zone where the tec-tonic activity is more intensive and intricate. The main part of tectonic activity of Chinese mainland includes a series of tectonic zones and active blocks divided by them. Therefore, the research…     

克拉玛依油田浅层稠油钻井泥浆工艺

针对工区地层特点和工程技术要求，以及现场发生井下复杂情况的原因分析，选择了泥浆体系，制定了相应的工艺技术对策，取得了良好的实效，对存的缺陷提供了解决方案的设想。     

坑内钻探存在的问题及对策

坑内钻探经常遇到钻机液压系统压力不足和钻进硬岩层时钻头进尺困难两大问题，严重影响了钻探效率。根据多年的实践经验，提出采取逐－排除法、腐蚀和弱包镶钻头法分别解决这2个问题。     

锦屏水电站坝区绿片岩结构及力学特性研究

根据室内外测试资料，对锦屏水电站坝区绿片岩的分布、微细观结构和物理力学特征，以及坝区高陡斜坡变形破坏及稳定性的影响进行了分析，获得的认识为该水电站工程可行性论证提供了必要资料。     

建设中国遥感卫星辐射校正场的构想

该文论述了中国遥感卫星辐射校正场筹建的必要性，辐射校正的基本原理和我国的辐射校正场建设的构想。     

机极冰盖部分消融对海平面的影响

本文假设地球具球对称，完全弹性和各向同性，推导了冰融相对海平面变化方程，采用汪汉胜等根据ＰＲＥＭ模型计算的地表弹性负荷勒夫数，估算了在今后５０年内，当南极冰盖消融１０米时所产生的全球海平面变化。     

中国大中型气田形成的主要控制因素

大中型气田形成的主要控制因素是:生气中心及其周缘、成气区内与古隆起有关的圈闭、潜伏的低、中阶煤系中或与其关联的上、下大中圈闭、成藏期晚、生气区内大面积孔隙型储集层和发育良好的区域盖层。