检索结果-南通市图书馆

地学前缘 2009年第S1期16卷 68-69页

作者： Guirong Zhang~1,Kunlong Yin~2,Lixia Chen~2 1.Geotechnical Engineering Institute of Nanjing Hydraulic Research Institute,Nanjing 210036,china. 2.china university of geosciences(beijing),beijing 100083,china

As one of the provinces of highest economic growth in coastal china,Zhejiang Province is experiencing serious geological disasters during the past development of *** main kinds of geo-hazards include landslides,rock falls and debris-flows in Zhejiang Province,which are mainly induced by intensive rainfall during typhoon season or by long-term rainfall from May to June every ***,

关键词： landslide prediction real-time warning effective rainfall rainfall intensity WEBGIS typhoon

THE ANALYSIS METHODOLOGY OF POLLEN FROM THE MESOZOIC—CENOZOIC RED BEDS IN NORTHERN TIBET

在线全文

学校读者我要写书评

暂无评论

地学前缘 2000年第S1期7卷 186-187页

作者： WT5,5”BZ]Wei Mingjian 1, Wan Xiaoqiao 2, Wang Chengshan 3, Yin Haisheng 3(1.Capital Normal university, beijing 100037,china 2.china university of geosciences, beijing 100083,china 3.Chengdu Institute of Technology, Chengdu 610059,china)

A group of red interbedded sandstone, siltstone and clay\|stone occur in the inland of northern Tibet. During the last 50 years, a lot of researches have been done at this group of beds along the Qinghai\|Xizang highway in the Kekexili area.. According to the lithological characters, the strata have been divided into tow parts, the lower part named as the Feng huoshan group, and the upper part the Yaxicuo group. It is obscure to the age of the strata. For example, Yi jixiang et al. (1990) put them in early Pliocene in the light of the microfossils which they found at the foot of Feng huoshan mountain. The fossils include (1) Charophyta: Rhabdochara? sp ., Peckichara subsphecrica?, Cyrogoniae; (2) Ostracoda: Cypris sp .; (3) Gastropod: Sinoplanorbis sp ., Amnicola sp ., Bithynia sp .; and (4) Sporopollen: Tricoporopollenites nactonodus ?, Polypodiceoisporites, Cyathidites, Schizosporis, Pediastrum. Based on different species of Charophyta, Ostracoda, Gastropod, Bivalve, Sporopollen, Zhang Yifu et al. (1994) refer the strata to Cretaceous. The lower abundance of the fossils from previous research gave lower precision of fossil identification. Thus, the age of the strata was confusion.

关键词： inland of Tibet Cenozoic red beds Pollen analysis method ology

Dalongshan A-type Granite:Petrology,Mineralogy,Geochemistry and Its Geological Significance

在线全文

学校读者我要写书评

暂无评论

地学前缘 2009年第S1期16卷 209-209页

作者： Wenshuai Xiang~1,Yangsong Du~2,Yi Cao~2 1.State Key Laboratory of Geological Processes and Mineral Resources,china university of geosciences,beijing 100083, china. 2.china university of geosciences(beijing),beijing 100083,china

The Dalongshan A-type granite belongs to the Anlu (Anqing,Zongyang and Lujiang)A-type granite belt, the rocks of Dalongshan granite are mainly quartz syenite,syenite and alkaline-feldspar granite. Mineralogy,petrology and geochemistry features of this granite support the argument that Anlu A-type granites and Luzong shoshonite volcanic rocks belong to the same magma evolution *** A-type granites do not represent ultrapotassic *** to Luzong volcanic rocks,the A-type granites are the end of the shoshonitic magma association.

关键词： A-type granite post-collision Dalongshan Anlu Luzong

Typical basin-fill sequences and basin migration in Yanshan,North china——Response to Mesozoic tectonic transition

在线全文

学校读者我要写书评

暂无评论

Typical basin-fill sequences and basin migration in Yanshan,...

中国科学院地质与地球物理研究所2004学术年会

作者： LI Zhong~1,LIU Shaofeng~2,ZHANG Jinfang~2 & WANG Qingchen~1 1.Institute of Geology and Geophysics,Chinese Academy of Sciences,beijing 100029,china 2.china university of geosciences,beijing 100083,china

Basin-fill sequences of Mesozoic typical basins in the Yanshan area,North china may be divided into four phases,reflecting lithosphere tectonic evolution from flexure(T),flexure with weak rifting(J),tectonic transition(J),and rifting(K).Except the first phase,the other three phases all start with lava and volcaniclastic rocks,and end with thick coarse clastic rocks and/or conglomerates,showing cyclic basin development rather than simple cyclic rift mechanism and disciplinary basin-stress change from extension to compression in each *** basin analysis,based on basin-fill sequences,paleocurrent distribution and depositional systems,shows that single basin-strike and structural-line direction controlling basin development had evidently changed from east-west to northeast in Late Jurassic in the Yanshan area, although basin group still occurred in east-west zonal *** Early Cretaceous,main structural-line strike controlling basins just turned to northeast by north in the studied area.

关键词： Yanshan Mesozoic basin-fill paleocurrent tectonic transition

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

潜江凹陷盐湖沉积储集层分布预测

石油勘探与开发 2004年第2期31卷 74-76,80页

作者：柳保军陈开远史忠生刘刚吕金博中国地质大学(武汉) 中国地质大学(北京) 中国石化河南油田勘探开发研究院

江汉盆地潜江凹陷潜江组为典型的盐湖沉积 ,盐岩主要发育在湖盆基准面的上升早期和下降中晚期 ,储集层发育受湖平面升降旋回、古地貌和物源供给的控制 ,储集层类型有低位体系域砂体、盐湖密度流砂体、湖滨浅滩砂体以及盐间非砂岩等。建... 详细信息

江汉盆地潜江凹陷潜江组为典型的盐湖沉积 ,盐岩主要发育在湖盆基准面的上升早期和下降中晚期 ,储集层发育受湖平面升降旋回、古地貌和物源供给的控制 ,储集层类型有低位体系域砂体、盐湖密度流砂体、湖滨浅滩砂体以及盐间非砂岩等。建立潜江组的高分辨率等时地层格架 ,将高精度测井层序对比与地震剖面横向追踪相结合 ,预测潜江凹陷潜北断裂带的高位及低位体系域三角洲和扇三角洲砂体较发育 ,蚌湖洼陷东斜坡和西斜坡发育扇三角洲砂体 ,凹陷坡折带盐湖密度流砂体等分布较为广泛 ,具有形成隐蔽油气藏的有利条件。图 5参

关键词：潜江凹陷潜江组盐湖沉积储集层类型分布预测

东濮凹陷兰聊断层的分段特征及其石油地质意义

在线全文

学校读者我要写书评

暂无评论

石油学报 2003年第4期24卷 26-30页

作者：孙思敏彭仕宓汪新文石油大学北京102249 中国地质大学北京100083

对兰聊断层不同地质时期的垂直位移沿走向分布特征的分析结果表明 ,其主演化期内表现出很强的分段性 ,沙四期是初始分段期 ,沙三期分段作用最为强烈 ,兰聊断层分解为 3个断层段 ,各断层段表现出独立正断层的位移分布特征 ;沙二—东营期... 详细信息

对兰聊断层不同地质时期的垂直位移沿走向分布特征的分析结果表明 ,其主演化期内表现出很强的分段性 ,沙四期是初始分段期 ,沙三期分段作用最为强烈 ,兰聊断层分解为 3个断层段 ,各断层段表现出独立正断层的位移分布特征 ;沙二—东营期是断层的连锁期 ,兰聊断层南北形成统一的动力学系统。兰聊断层的分段作用使其形成横向褶皱 ,向斜形成于局部位移极大处 ,位于断层段中央附近 ;背斜位于断层段连接处 ,是断层位移局部极小处 ;兰聊断层早、中期分段和晚期连锁对东濮凹陷沉积作用、油气聚集有重要影响。

关键词：东濮凹陷兰聊断层正断层分段作用横向褶皱断层连锁油气聚集

Research on the Quaternary Fine-fraction Lithofacies in Tainan Area,Qindam Basin

在线全文

学校读者我要写书评

暂无评论

地学前缘 2009年第S1期16卷 206-206页

作者： Zongkui Xie~1,Xinghe Yu~2 1.Off-shore Oil Production Plant,Shengli Oilfield Branch Company,china Petroleum & Chemical Corp.,Dongying 257237, china. 2.china university of geosciences(beijing),beijing 100083,china

Lacus sediments developed in Sebei Formation of Quaternary in Tainan Area,Qindam Basin,which is along one of the low uplift growing dome in the center of the depression *** the sediments are weakly cemented as siltstone and mudstone,it is very difficult to acquire the normal data for classifying and predicting precipitation facies and reservoir beds *** from core cored under

关键词： Qindam Basin Quaternary fine fraction lithofacies sediment reservoir

在线全文

学校读者我要写书评

暂无评论

脚手架在高边坡治理工程中的应用

施工技术 2008年第S2期37卷 367-370页

作者：崔显岳夏长华卢文阁北京市地质矿产勘查开发总公司北京100044 中国地质大学(北京) 北京100083 吉林大学吉林长春130012

介绍高边坡加固工程中脚手架搭设的要求、特点及受力情况,设计了加固施工中作为安全维护用脚手架的搭设形式,并对边坡治理工程施工中安全防护的措施作了简要的描述。

关键词：高边坡脚手架结构设计加固

Study on Velocity Structure Models of the Sub-Sediments in Zhapu and Jintang near the Hangzhou Bay

在线全文

学校读者我要写书评

暂无评论

地学前缘 2009年第S1期16卷 227-227页

作者： Xianming Deng~(1,2),Chunhui Tao~1,Chunyan Sun~2,Jianping Zhou~1,Chunhua Gu~1 1.Key Laboratory of Submarine geosciences,The Second Institute of Oceanography,SOA,Hangzhou 310012.china. 2.china university of geosciences(beijing),beijing 100083,china

Marine sediment velocity structural models have strong regional *** made two shallow continental shelf sediment velocity structure models,Lu Bo gave a model in accordance with the characteristics of the continental shelf of ***,no model can contain all geological *** got the in-situ velocity data at Zhapu and Jintang near the Hangzhou Bay by using the MFI GeoA(Multi-Frequency In-situ Geoacoustic Measurement),and used these data to make the velocity structure ***,we got two different *** is Zhapu velocity structural model that we can describe as Lower velocity-Higher velocity -Lower velocity-Higher velocity model simply。

关键词： sub-sediments velocity structure models in-situ measurement Zhapu and Jintang

在线全文

学校读者我要写书评

暂无评论

压裂方案经济优化的智能专家系统研究

石油学报 2004年第1期25卷 66-69页

作者：蒋廷学汪永利丁云宏孙平许泽君中国石油勘探开发研究院廊坊分院中国地质大学北京100083 中国石油华北油田分公司勘探部成都理工大学四川成都610000

初步研究并建立了压裂方案经济优化的智能专家系统 ,其核心是遗传算法在压裂方案经济优选中的应用。该算法的突出特点是采用随机生成的方法 ,先形成几十个甚至几百个待选压裂方案 (每个压裂方案包含的各种设计参数各不相同 ) ,然后 ,综... 详细信息

初步研究并建立了压裂方案经济优化的智能专家系统 ,其核心是遗传算法在压裂方案经济优选中的应用。该算法的突出特点是采用随机生成的方法 ,先形成几十个甚至几百个待选压裂方案 (每个压裂方案包含的各种设计参数各不相同 ) ,然后 ,综合应用杂交和变异两种方法对诸压裂方案包括的诸多设计参数进行系统优化 ,经过多代遗传和变异后 ,最终可形成按经济净现值大小排序的压裂方案系列 ,从中可优选出最佳方案。此外 ,在智能专家系统中考虑到油价和利率在特定范围内的随机波动 ,因而是一个符合实际的理想模型。经现场压裂施工验证 ,取得了比常规压裂优化方法更为满意的效果。

关键词：专家系统遗传算法压裂方案经济优化杂交变异