上海市区浅层土粘土矿物、微结构与地面沉降   总被引：2，自引：0，他引：2  

何美临 《上海国土资源》1989,(4)

本文从微观角度出发,以X—光衍射为主,配合差热、红外光谱、透射电镜和扫描电镜手段,对上海市区浅层粘性土进行了岩矿鉴定和微结构分析,探讨了粘土矿物、微结构与地面沉降的关系。  相似文献   

定向羽状水平井在晋南沁水盆地煤层气开发应用中存在的问题     

郭丙政 《地质通报》2006,(Z2)

定向羽状水平井是指通过定向井、多分支水平井技术,由地面垂直向下钻至造斜点后以中、小曲率半径侧斜钻进目的煤层主水平井,再从主井两侧不同位置水平侧钻分支井,进而形成像羽毛状的多分支水平井。这一技术是一项复杂的系统工程,目前在中国煤层气领域还处在研究和试验阶段,尚未形成一系列成熟的工艺与技术。只有通过对国内现有的定向井、分支井、水平井钻井技术,井眼轨迹精确控制技术和煤储层保护技术进行整合,吸收国外的先进技术和管理经验,并进行实际工程研究和试验,将各种技术进行优化组合,逐步积累经验,不断地完善,最终才能形成一整套适…  相似文献   

开拓商业地质领域 发展壮大地勘经济     

Guizhou Chemical Geology Prospecting Institute 《化工矿产地质》2000,22(2):100-104

贵州化工地质勘查院从认真分析省情和院情入手 ,确立了“地质找矿为主 ,试行探采结合 ,稳步发展工勘 ,加强多种经营 ,搞活物业管理”的发展思路。面对市场主动出击 ,多渠道吸收资金 ,尝试了“找钱探矿”的新途径 ,为今后从事商业性地质工作积累了经验。为适应改革发展的需要 ,通过各级管理机构的调整与组建、对各项规章制度的进一步完善及严格管理、建立地质项目库及加强与外部环境的沟通等方面的工作 ,使本院的工作取得了一定成绩 ,并为今后多元化投资拓展商业性地勘工作积累了一定的经验  相似文献   

矿物性质对聚丙烯酰胺吸附的影响   总被引：10，自引：0，他引：10  

刘晓  陈忠  曾凡刚 《矿物岩石》2004,24(1):97-100

选择粒径范围为50μm～154μm的11种储层标准矿物,取1.0000g矿物按1∶10的固/液比分别与浓度为1000μg/ml的聚丙烯酰胺(蒸馏水配制)溶液在常温25℃下作静态吸附实验,分别反应8h,36h,72h和120h,高速分离后用酸/漂白液沉淀浊度法检测聚丙烯酰胺浓度,并计算吸附量.研究结果表现出如下的吸附量顺序:石膏>蒙脱石>高岭石>绿泥石>黑云母>白云母>白云石>方解石>斜长石>微斜长石>石英。多种矿物共存时存在吸附量与矿物配比不成比例的协同效应。  相似文献   

Coating Protection for Production Facilities of Offshore Oil Fields     

Zhu Chengde Senior Engineer  China Offshore Oil Development & Engineering Corporation 《中国海洋工程》1993,(4)

- This paper describes coating protection of production facilities of offshore oil fields based on the practice of development of Bohai Offshore Oil Field, with focus laid on the selection of coating systems, surface preparation, coating application, as well as coating inspection for four types of major production facilities.  相似文献   

Equivalent Simplifying of Tower Structure and Its Application in Overall Analysis of Offshore Platform     

Zhao Deting Senior Engineer  China Offshore Oil Development  Engineering Corporation  Beijing 《中国海洋工程》1995,(4)

Based on some mechanical principles, this paper presents a new way for simplifying the tower structure on the platform, i. e., substituting the three-dimensional tower structure by using beam elements. For the overall analysis of offshore platform, this method can not only save man- power and computer time, but also get better results. This paper introduces the equivalent-simplifying method and its application in engineering.  相似文献   

Estimation of JONSWAP Spectral Parameters by Using Measured Wave Data     

Fu Yuhua Senior Engineer  China Offshore Oil Development  Engineering Corporation  P. O. Box  Beijing 《中国海洋工程》1995,(3)

- This paper presents the method of determining JONSWAP spectrum by using measured wave data. If Hs, Tz and Tc are the measured significant wave height, average zero-up crossing wave period and average period between wave crests respectively and let y = T Z / TC; this paper provides equation to solve y fromf(y,y) = 0. From the solutions of this equation and by using LSM, the expression relating y as a function of y (for 2.54相似文献   

A New Model for Ice Forces on A Conical Structure   总被引：1，自引：0，他引：1  

冯玮时忠民  刘立名 《中国海洋工程》2005,19(1):139-146

The ice force is an important factor to be taken into account for offshore structures in cold regions, and the calculation method of the ice force is meaningful for the offshore structure design. The cone is now used as an optimal ice-resistant structure because it can cause bending failure of the ice sheet. The interaction between an ice sheet and a conical structure is studied in this paper and Croasdale‘s model is modified based on field observations. The newly built model separates the ice sheet into the emersed part and the floating part, and the equilibrium analyses are canied out respectively. The bending moment distribution of the ice sheet is analyzed for the determination of the position of bending failure, which serves as a supplementary restraint. The analytic solution of the ice foree on a conical structure is obtained it is verified with the experimental data of previous researches.  相似文献   

四川冕宁稀土矿床黑色风化物中的稀土元素赋存状态研究   总被引：2，自引：0，他引：2  

张萍  蒋馥华 《矿物岩石》1999,19(4):10-14

本文用现代的固体表面分析方法和连续选择性提取法对冕宁黑色风化物中稀土元素的赋存状态进行研究因。在可交换离子相,易还原相,水成相和矿物结晶相四种稀土存在的形式中,易还原相和水成相是自然界矿物中新的稀 存状态。特性吸附是产生这两种新相的内在原因。  相似文献   

Uranium Provinces in China   总被引：1，自引：0，他引：1  

CHEN Zhaobo  ZHAO Fengmin  XIANG Weidong  CHEN Yuehui China National Nuclear Corporation  P.O. BOX:  Beijing 《《地质学报》英文版》2000,74(3):587-594

Three uranium provinces are recognized in China, the Southeast China uranium province, the Northeast China-Inner Mongolia uranium province and the Northwest China (Xinjiang) uranium province. The latter two promise good potential for uranium resources and are major exploration target areas in recent years. There are two major types of uranium deposits: the Phanerozoic hydrothermal type (vein type) and the Meso-Cenozoic sandstone type in different proportions in the three uranium provinces. The most important reason or prerequisite for the formation of these uranium provinces is that Precambrian uranium-enriched old basement or its broken parts (median massifs) exists or once existed in these regions, and underwent strong tectonomagmatic activation during Phanerozoic time. Uranium was mobilized from the old basement and migrated upwards to the upper structural level together with the acidic magma originating from anatexis and the primary fluids, which were then mixed with meteoric water and resulted in t  相似文献