全国自动气象站实时观测资料三级质量控制系统研制   总被引：20，自引：3，他引：17  

任芝花  张志富  孙超  刘一鸣  李俊  鞠晓慧  赵煜飞  李志鹏  张玮  李洪康  曾行吉  任晓炜  刘莹  王海军 《气象》2015,41(10):1268-1277

迄今,中国气象局已在全国建立了55000余个地面自动气象站（含国家级自动站和区域自动站）。为了促进众多台站观测资料质量提高,在实时业务中保障用户用到基本正确有效的数据,2009年底中国气象局启动了“全国自动站实时资料质量控制与综合评估系统建设”工程,旨在研制一套基本适用于全国自动站实时观测数据的质量控制技术方法,建立台站、省级、国家级资料部门的地面自动站实时资料三级质量控制与反馈业务系统。在探究自动站错误数据表现形式的基础上,研制了自动站实时观测数据质量控制技术;从业务分工与应用角度,设计建立了台站负责质量监控、省级负责质量控制和国家级主要负责质量评估的自动站实时资料三级质量控制系统。该系统已在2400多个国家级气象台站、31个省级和国家级资料部门安装部署与业务应用。通过系统建设与应用,实时上传的自动站数据质量得到明显改善。主汛期全国自动站逐小时气温、降水数据可用率分别从2009年的88%、83%提升到2012、2013年的98%左右。  相似文献   

Classification of Complex Reservoirs in Superimposed Basins of Western China   总被引：4，自引：0，他引：4  

PANG Xiongqi  ZHOU Xinyuan  LIN Changsong  HUO Zhipeng  LUO Xiaorong  PANG Hong 《《地质学报》英文版》2010,84(5):1011-1034

<正>Many of the sedimentary basins in western China were formed through the superposition and compounding of at least two previously developed sedimentary basins and in general they can be termed as complex superimposed basins.The distinct differences between these basins and monotype basins are their discontinuous stratigraphic sedimentation,stratigraphic structure and stratigraphic stress-strain action over geological history.Based on the correlation of chronological age on structural sections,superimposed basins can be divided into five types in this study:(1) continuous sedimentation type superimposed basins,(2) middle and late stratigraphic superimposed basins,(3) early and late stratigraphic superimposed basins,(4) early and middle stratigraphic superimposed basins,and(5) long-term exposed superimposed basins.Multiple source-reservoir-caprock assemblages have developed in such basins.In addition,multi-stage hydrocarbon generation and expulsion,multiple sources,polycyclic hydrocarbon accumulation and multiple-type hydrocarbon reservoirs adjustment,reformation and destruction have occurred in these basins.The complex reservoirs that have been discovered widely in the superimposed basins to date have remarkably different geologic features from primary reservoirs,and the root causes of this are folding,denudation and the fracture effect caused by multiphase tectonic events in the superimposed basins as well as associated seepage,diffusion,spilling,oxidation,degradation and cracking.Based on their genesis characteristics,complex reservoirs are divided into five categories:(1) primary reservoirs,(2) trap adjustment type reservoirs,(3) component variant reservoirs,(4) phase conversion type reservoirs and (5) scale-reformed reservoirs.  相似文献   

近地铁结构地连墙施工技术可行性分析与应用          下载免费PDF全文

杨春  赵慎中  宋珪 《探矿工程》2010,37(6):56-58

随着城市经济建设的飞速发展,城市地下空间开发项目日益增多。工程施工中经常遇到紧邻地下建筑物进行开挖、钻进等情况,特别是地下连续墙这样较大面积深层开挖的工法,势必会对原有地下建筑造成一定影响,稍有不慎,便会造成安全质量事故。结合工程实例,简要介绍了地下连续墙在上海市某紧邻地铁结构基坑工程中的应用。通过可行性分析,采取相关的施工过程控制措施使其在施工过程中对地铁结构的变形影响达到最小,实践证明了该法对同类复杂工程的适应性。  相似文献   

工程海域波浪特征分析方法比较     

王科华  任赵飞  周智鹏  李伟仪 《海洋工程》2022,40(3):149-158

通过选取两个典型海外工程项目案例,分别采用波浪特征参数法和波浪谱法对工程海域波浪条件进行分析,并比较这两种方法在作业波浪条件、波浪特征认知程度上的差异,以及对海港水域平面布置产生的影响。对于波浪能量在频域及方向上存在多峰谱情况的海域,基于全谱的波浪特征参数系列数据有可能出现以下两种情况:1)主峰波向掩盖次峰波向;2)主峰波向错配次峰周期。对于上述两种情况,若仅采用波浪特征参数法对工程海域作业波浪条件进行分析,并指导海港水域平面布置,则极可能忽略或误判个别敏感波向、关键频域段的部分波浪能量,从而误导设计,为后续项目运营埋下隐患。对于以上情形,宜采用波浪谱法深入分析工程海域波浪能量在整个频域及各个方向上的详细分布及构成,并对关键波向、关键频域段的波浪能量进行量化,评估其对海港水域平面布置的影响,从而最大程度地避免由于波浪输入条件误判带来的风险。  相似文献   

琼东南盆地深水区断层垂向输导及成藏模式   总被引：2，自引：1，他引：1  

王振峰  刘震  曹尚  孙志鹏  左倩媚  王亚辉  何卫军 《海洋学报(英文版)》2014,33(12):96-106

In the Qiongdongnan Basin, faults are well developed.Based on the drilling results, the traps controlled two or more faults are oil-rich. However, when only one fault cut through the sand body, there is no sign for hy-drocarbon accumulation in the sandstone. In terms of this phenomenon, the principle of reservoir-forming controlled by fault terrace is proposed, i.e., when the single fault activates, because of the incompressibility of pore water, the resistance of pore and the direction of buoyancy, it is impossible for hydrocarbon to ac-cumulate in sandstone. But when there are two or more faults, one of the faults acts as the spillway so the hydrocarbon could fill in the pore of sandstone through other faults. In total five gas bearing structures and four failure traps are considered, as examples to demonstrate our findings. According to this theory, it is well-advised that south steep slope zone of Baodao-Changchang Depression, south gentle slope zone of Lingshui Depression, north steep slope zone of Lingshui Depression, and north steep slope zone of Baodao Depression are the most favorable step-fault zones, which are the main exploration direction in next stage.  相似文献   

结构总体最小二乘估计理论的拓展及其应用研究EI北大核心CSCD     

吕志鹏 《测绘学报》2022,51(9):1978-1978

具有随机系数矩阵的高斯-马尔可夫(GM)模型被称为变量误差(EIV)模型,在均方误差意义下,总体最小二乘(TLS)估计得到的EIV模型参数估值优于最小二乘(TLS)估计,这种状况已引起测绘领域的极大关注,并成为多年来的热点问题之一。  相似文献   

多元遥感技术在重庆市露天矿恢复治理动态监测中的应用     

吴凤敏  余静  王素伟  王琛  郑稚棚  李卓锟  张灵犀 《北京测绘》2022,36(2):149-155

  相似文献   

Prevention of water and quicksand inrush during extracting contiguous coal seams under the lowermost aquifer in the unconsolidated Cenozoic alluvium—a case study   总被引：1，自引：0，他引：1  

Luwang Chen  Shilei Zhang  Herong Gui 《Arabian Journal of Geosciences》2014,7(6):2139-2149

Extracting the contiguous coal seams under the lowermost aquifer in the unconsolidated Cenozoic alluvium is apt to water and quicksand inrush. By using a series of investigation methods including empirical formulas, numerical simulation, theoretical analysis, etc., the study focused on the fracture and the excess pore water pressure in the overlying strata in the process of extracting no. 8 coal seam firstly and no. 9 coal seam (under no. 8 coal seam) subsequently in no. 8102 working face of Luling coal mine in the north of Anhui Province of China. When no. 8 coal seam was extracted, the water-conducting fractured zone penetrated into the lowermost aquifer and rapid dissipation of excess pore water pressure above the gob occurred, accompanied by relatively high seepage hydraulic gradient over the headgate and the tailgate. When no. 9 coal seam was extracted, failure did not obviously extend upwards and the excess pore water pressure decreased slowly and a relatively high seepage hydraulic gradient transferred downwards from the headgate to the tailgate in the inclined profile. The safe water head (H _s) in the lowermost aquifer was confirmed to 15.6 m. Therefore, water and quicksand inrush was avoided effectively in the process of extracting the contiguous coal seams by dewatering, controlling mining height, and laying double resistance nets in the working face.  相似文献   

声波测试法在判别地下厂房EDZ中的应用          下载免费PDF全文

徐光黎  董家兴  李志鹏  宋胜武  张世殊  王金生 《地球科学》2014,39(11):1599-1606

洞室开挖不可避免地会损伤岩体, 对于规模巨大、布置异常复杂的水电地下厂房围岩尤甚, 合理地确定开控损伤区(EDZ)分布成为地下洞室的信息化设计、施工和安全运营的关键性问题.在引入EDZ概念及强EDZ、弱EDZ和基本未损区分区的基础上, 提出采用声波测试方法来确定强EDZ和弱EDZ的分布.将声波波速-深度曲线划分为Ⅰ型、Ⅱ型和Ⅲ型等3种曲线类型, 根据曲线特征点, 对EDZ进行定性、半定量的初判.根据波速计算得出的损伤因子D, 对强、弱EDZ和基本未损区进行定量的判别.首次提出的基于声波测试法, 定性、半定量和定量相结合的综合研判法具有创新性, 为客观评价地下洞室EDZ提供了科学的方法.   相似文献   

黑龙江平顶山金矿赋矿花岗岩锆石U-Pb年龄、Hf同位素特征及其地质意义     

包真艳  王建  杨言辰  王林  谢志鹏  宋樾  刘建国 《地质学报》2014,88(3):407-420

平顶山金矿床位于佳木斯地块与松嫩地块的衔接处北端,地处中亚造山带的东段。前人对该矿床的岩(矿)石物理化学特征及地质特征已进行了研究,但对与成矿密切相关的花岗岩缺乏系统的岩石学、地球化学和高精度年代学等方面的研究。本次研究通过锆石的LA-ICP-MS U-Pb定年、Hf同位素示踪以及全岩的主、微量元素测试,探讨了平顶山金矿区赋矿花岗岩的源区特征、形成机制和构造背景。矿区花岗岩包括早期的浅色中粒二长花岗岩和稍晚期的细粒黑云母二长花岗岩,两期花岗岩的锆石U-Pb年龄分别为271.7±2.3 Ma和249.8±3.3Ma,对应的εHf(t)为-4.17～-0.58和-4.98～-0.49,两阶段平均模式年龄tDM2分别为1432 Ma、1457Ma,原始岩浆可能来源于中元古代增生的壳源物质的重熔。两期花岗岩均以高碱(Na2O+K2O)、富Al2O3、富集LREE和LILE(Rb、Ba、Th、U和K)、低MgO、贫HREE和HFSE(Nb、Ta、P和Ti)为特征,属高钾钙碱性系列的准铝质/过铝质I型花岗岩,代表了火山弧-同碰撞环境。结合中亚造山带东段构造演化历史,我们认为平顶山金矿的花岗岩可能是古亚洲洋向北俯冲、闭合、华北克拉通与佳-蒙陆块碰撞产物。  相似文献