滇西南地区孟连断裂晚第四纪走滑速率的厘定   总被引：1，自引：1，他引：0       下载免费PDF全文

刘炳旭  袁道阳  王爱国  何文贵  邵延秀  方良好  高效东 《地震工程学报》2019,41(3):770-780

通过卫星影像解译和野外实地调查,获得滇西南地区孟连断裂的几何特征和活动性参数。孟连断裂总体走向NE-NEE向,不具有明显的分段性,连续性较好。断裂从单侧控制着沿线的勐滨、孟连和勐马三个新生代盆地的发育。断裂沿线地貌以线性较好的断层谷、断层崖和断层陡坎为主,并发育多级左旋位错的河流、冲沟和阶（台）地等,观测到的最小左旋位错约为7 m。采用高精度Li-DAR测量方法,对4处典型水平位错地貌进行精细测量,根据获得的相应地貌面年代,得到孟连断裂晚第四纪以来平均左旋走滑速率为2.2±0.4 mm/a。其结果与滇西南地区其他NE向左旋走滑断裂滑动速率相当,反映了区域构造活动的整体协调性。根据跨断层地质体最大左旋位错量9.5±1.8 km,估算断裂开始左旋走滑的时代为距今4.7±1.6 Ma左右,即中新世中晚期。  相似文献   

链式海底地震仪节点结构设计与试验          下载免费PDF全文

张川  周建平  阮爱国  翁利春  段磊  曾锦锋  陈宁特 《地震工程学报》2024,(3):672-679

海底地震仪是一种重要的海洋地震观测设备。针对中国近岸浅海洋流噪声大和人类活动频繁的特点,提出链式地震观测方式并对链式海底地震仪节点进行机械结构设计。首先根据内部构件尺寸与布局对地震仪节点整体结构进行设计;然后通过理论计算与有限元仿真方式确定地震仪节点仓体的壳体厚度、端盖厚度和密封尺寸;最后通过压力试验验证所设计的地震仪节点结构的耐压和水密性能符合要求,通过地震观测对比试验验证其接收天然地震的能力。此链式海底地震仪未来将应用于浙江近海的实际地震观测,提供实时连续的地震观测数据。  相似文献   

基于cGML和Mobile SVG的手机地图可视化研究     

查灵  邬群勇  王钦敏  张爱国 《测绘信息与工程》2010,35(5):6-7

提出了基于Mobile SVG的移动地图可视化的设计思路,研究了Mobile SVG的坐标系统和坐标转换,实现了Mobile SVG移动地图的可视化。  相似文献   

对计算土壤和岩石中氡浓度及其表面析出率表面边界条件的讨论     

何斌  过惠平 《铀矿地质》1998,14(5):302-307

本文对求解土壤或岩石中氡浓度及其表面析出率的边界条件进行了探讨。以空气中无穷远处氡浓度为零（空气中无氡源）的自然边界条件代替空气与土壤或岩石交界面氡浓度为零的边界条件,给出了土壤和岩石中氡浓度及其表面析出率的具体表达式。与前人研究结果比较,该式中增加了一项,表面氡析出率缩小了一个倍数。通过对土壤、岩石的具体计算．表明两种边界条件的计算结果有相当的偏差。同时,文中还讨论了在两类边界条件下对流对土壤或岩石中氡浓度及其表面析出率计算的影响。  相似文献   

地质环境质量评价中的专家-层次分析定权法   总被引：34，自引：0，他引：34  

蔡鹤生  周爱国 《地球科学》1998,23(3):299-302

在地质环境质量评价中,往往要选择多个环境因子一起参与评价,确定它们的权值就显得十分重要。在分析权值及定仅模型含义的基础上,探讨了专家－层次分析定权法的基本原理和方法,并进行了实际应用。应用结果表明,该定权法合理、可行。  相似文献   

钻探微机智能监测系统的研制与应用   总被引：2，自引：0，他引：2       下载免费PDF全文

鄢泰宁  龚元明  姚爱国  吴翔 《探矿工程》1998,(4):26-27,29

钻探微机智能监测系统是检测技术、识别算法、计算机技术与钻探工艺相结合的高科技成果。它可方便快捷地安装于野外钻进现场,自动生成钻进参数的约束条件,对孔内工况进行智能识别,从而提高钻探效率,降低事故率,还可跟踪钻孔轨迹,进行中靶预测,建立钻探生产数据库。  相似文献   

基于双目视觉的双臂协作教学机器人研究与设计     

温秀兰  胡仰  姚波  赵艺兵  宋爱国  崔伟祥 《南京气象学院学报》2021,13(3):304-310

为弥补智能制造、机器人工程等新专业实验装置短缺、学生创新实践能力亟待提升等问题,本文设计了一种基于双目视觉的双臂协作教学机器人.双臂机械部分设计呈对称结构,底座大而稳定,可以降低制造成本及协作抓取难度;研究设计的示教动作还原算法和重投影误差最小化算法,可以提升机器人末端位姿数据采集精度,使双臂协作抓取更准确稳定.该系统不仅能够通过上位机拖动控制双臂运动完成示教编程及动作组实验,而且还能够进行基于视觉引导的图像处理及单臂抓取实验、运动分析实验、在线编程与协调抓取开放实验.该系统成本低、功能丰富、综合性强,且兼具拖动示教与开放性特点,有助于提升学生创新实践能力,非常适合在智能制造、机器人工程等专业实验教学过程中推广应用.  相似文献   

Crustal Structure across the Northwestern Margin of South China Sea: Evidence for Magma‐poor Rifting from a Wide‐angle Seismic Profile     

DING Weiwei  Michael SCHNABEL  Dieter FRANKE  RUAN Aiguo  WU Zhenli 《《地质学报》英文版》2012,86(4):854-866

We present results from a 484 km wide-angle seismic profile acquired in the northwest part of the South China Sea (SCS) during OBS2006 cruise. The line that runs along a previously acquired multi-channel seismic line (SO49-18) crosses the continental slope of the northern margin, the Northwest Subbasin (NWSB) of the South China Sea, the Zhongsha Massif and partly the oceanic basin of the South China Sea. Seismic sections recorded on 13 ocean-bottom seismometers were used to identify refracted phases from the crustal layer and also reflected phases from the crust-mantle boundary (Moho). Inversion of the traveltimes using a simple start model reveals crustal images in the study area. The velocity model shows that crustal thickness below the continental slope is between 14 and 23 km. The continental part of the line is characterized by gentle landward mantle uplift and an abrupt oceanward one. The velocities in the lower crust do not exceed 6.9 km/s. With the new data we can exclude a high-velocity lower crustal body (velocities above 7.0 km/s) at the location of the line. We conclude that this part of the South China Sea margin developed by a magma-poor rifting. Both, the NWSB and the Southwest Sub-basin (SWSB) reveal velocities typical for oceanic crust with crustal thickness between 5 and 7 km. The Zhongsha Massif in between is extremely stretched with only 6–10 km continental crust left. Crustal velocity is below 6.5 km/s; possibly indicating the absence of the lower crust. Multi-channel seismic profile shows that the Yitongansha Uplift in the slope area and the Zhongsha Massif are only mildly deformed. We considered them as rigid continent blocks which acted as rift shoulders of the main rift subsequently resulting in the formation of the Northwest Sub-basin. The extension was mainly accommodated by a ductile lower crustal flows, which might have been extremely attenuated and flow into the oceanic basin during the spreading stage. We compared the crustal structures along the northern margin and found an east-west thicken trend of the crust below the continent slope. This might be contributed by the east-west sea-floor spreading along the continental margin.  相似文献   

Study on the element geochemical charactersitics of the Shazi large-sized anatase ore deposit in Qinglong,Guizhou Province     

Min Zhang  Aiguo Nie  Fei Xie  Mingjin Zhu  Zhuru Zhang 《中国地球化学学报》2014,33(3):316-323

The Shazi anatase ore deposit in Qinglong, Guizhou Province, is a large-sized anatase deposit that has been recently explored. The characteristics of major oxides in the ore are similar to those of modem laterite weath- ering crust and laterite in the laterite-type gold deposits in the western part of Guizhou Province. Studies on the REE characteristics of basalts and anatase ores in the study region showed that both of them do have extremely strong affinities. There are two groups of trace elements in the ores, i.e., Au-Ag-As-Sb-Hg-Tl association and Sc-TiO2-Cu-Fe-Mn association, reflecting that the formation of anatase ore is related to the formation of siliceous claystone at the early stage of eruption of the Emeishan basaltic magma. The siliceous claystones are the major country rocks for the formation of laterite-type gold ores and anatase ores. In the region anatase ores are rich in Sc and the basalts enriched in Fe, Mn, Ti and Sc are the material source of metallogenesis.  相似文献   

中国煤炭资源综合区划研究     

程爱国  宁树正  袁同兴 《中国煤炭地质》2011,(8):5-8

在研究我国煤炭资源分布规律的基础上,分析了煤炭资源分布与经济发展水平、经济区划、煤炭供需形势以及水资源、生态环境的关系。结合我国行政区划,提出了全新的我国煤炭资源综合区划方案,即三带（东部补给带、中部供给带和西部自给带）六区（东北规划区、黄淮海规划区、华南规划区、晋陕蒙宁规划区、西南规划区、西北规划区）划分方案。  相似文献