局属动态     

《青海国土经略》2014,(1)

正青海省提前一个月拉开全省地质勘查大幕省地质矿产勘查开发局柴达木综合地质矿产勘查院变冬闲为冬忙,提前计划、充分准备,定于2月20日在茫崖大浪滩黑北凹地深层卤水钾矿普查、冷湖昆特依矿区局部卤水钾盐资源预查和格尔木牛苦头矿区铁多金属矿勘探项目区正式开钻。日前,15台钻机和200余人队伍已做好开赴野外施工前的各项准备工作。省地质矿产勘查  相似文献   

把国土资源管理利用工作提高到新水平——在全省国土资源工作会议上的讲话     

徐飞鹏 《黑龙江国土资源》2014,(2):22-25

刚刚过去的一年,是我厅群众路线教育实践活动取得实实在在成效的一年,是全省国土资源重点工作实现突破的一年,也是各项工作深化改革的一年。刚才,志杰厅长简要回顾了2013年工作,深入分析了当前形势,对今年全省国土资源重点工作任务作出了总体安排。一会儿,莎燕省长还要代表省政府作重要讲话。希望大家认真学习领会,抓好贯彻落实。下面,我主要围绕如何强化思想、组织和作风建设,推进各项工作有效落实,讲四点意见。  相似文献   

不同破碎波对沙质海床作用的实验研究     

程永舟  李青峰  潘昀  韩二品  王晶 《海洋学报》2014,36(5):130-135

破碎波对近海海岸地形以及海岸建筑物影响强烈,通过物理模型实验对孤立波、规则波作用下破碎带的床面形态以及孔隙水压力进行分析。破碎波冲击海床,破碎处床面上形成沙坝和沙坑,与规则波相比,孤立波破碎时对床面的冲刷更加剧烈,床面形成的沙坝和沙坑尺度更大,且土体内孔隙水压力幅值也较大。同时研究了波面变化对孔隙水压力的影响,发现波面变化历时曲线与孔隙水压力历时曲线相似,与孔隙水压力梯度历时曲线更为相似,说明波面变化更能反映海床内部孔隙水压力梯度的变化。通过探讨波浪与海床之间相互耦合作用,发现破碎带地形变化使得波浪出现不同破碎类型,分析得出卷破波比崩破波作用下孔隙水压力幅值大。  相似文献   

渤海风暴减水特征及其对深水航路影响的数值模拟     

傅赐福  付翔  吴少华  于福江  董剑希 《海洋学报》2014,36(3):30-38

利用环渤海9个沿岸站近10a潮位资料分析渤海海域的风暴减水特征,结果表明:渤海年均出现50cm和100cm风暴减水分别超过30d和6d,每年的9月至翌年4月份风暴减水最为频繁;建立了一套精细化天文潮-风暴潮耦合模型用于渤海深水航路的潮位预报,各站天文潮模拟验证的平均均方根误差为18.5cm,由此计算得到航路代表点的潮汐特征值并作潮汐预报;后报模拟了近10a重大风暴减水过程,模拟与实测吻合较好,说明该耦合模型可为该航路的潮位预报提供有益参考。  相似文献   

Distributional characteristics of grain sizes of surface sediments in the Zhujiang River Estuary   总被引：1，自引：0，他引：1  

JIANG Siyi  XU Fangjian  LI Yan  LIU Xiling  ZHAO Yongfang  XU Wei 《海洋学报(英文版)》2014,33(4):30-36

Distributions of the parameters of sedimentary grain sizes and their correlations were studied to trace the sources of silts and their movement trends in the Zhujiang River Estuary based on the analyses of grain sizes from more than 1080 sedimentary samples. The distributions of the median diameter, public value, quartile deviation, and skewness of sediments were complex in the Zhuiiang River Estuary mainly because of the impact of the matter source regions, distances from the source regions, and hydrodynamic conditions, such as waves, tidal currents, and coastal currents. Analyses of the parameters of the grain sizes for the various types of sediments showed that the distributions of the surface sediments in the Zhujiang River Estuary were controlled by many factors. Their matter sources were mainly the sediments discharged from the runoffs and ebb tidal currents, and from the open sea. The sediments mainly moved by suspension movement. The silts formed a large area of sediments with suspended fine silts in the Zhujiang River Estuary by internal adjustment transportation in the area, and moved toward the western coast of the Zhujiang River Estuary under the effect of Coriolis forces and coastal currents.  相似文献   

沉积物孔隙毛细管压力与甲烷水合物饱和度关系研究   总被引：1，自引：1，他引：0  

孙始财  刘昌岭  业渝光  刘玉峰 《海洋学报(英文版)》2014,33(10):30-36

To better understand the relationship between the pore capillary pressure and hydrate saturation in sediments, a new method was proposed. First, the phase equilibria of methane hydrate in fine-grained silica sands were measured. As to the equilibrium data, the pore capillary pressure and saturation of methane hydrate were calculated. The results showed that the phase equilibria of methane hydrates in fine-grained silica sands changed due to the depressed activity of pore water caused by the surface group and negatively charged characteristic of silica particles as well as the capillary pressure in small pores together. The capillary pressure increased with the increase of methane hydrate saturation due to the decrease of the available pore space. However, the capillary-saturation relationship could not yet be described quantitatively because of the stochastic habit of hydrate growth.  相似文献   

Numerical simulation and experimental research on hydrodynamic performance of propeller with varying shaft depths   总被引：2，自引：0，他引：2  

郭春雨  赵大刚  孙瑜 《中国海洋工程》2014,28(2):271-282

In order to study hydrodynamic performance of a propeller in the free surface, the numerical simulation and open-water experiments are carried out with varying shaft depths of propeller. The influences of shaft depths of a propeller on thrust and torque coefficient in calm water are mainly studied. Meanwhile, this paper also studies the propeller air-ingestion under special working conditions by experiment and theoretical calculation method, and compares the calculation results and experimental results. The results prove that the theoretical calculation model used in this paper can imitate the propeller air-ingestion successfully. The successful phenomenon simulation provides an essential theoretical basis to understand the physical essence of the propeller air-ingestion.  相似文献   

莱州湾东岸近岸海域规划围填海后冲淤演变预测     

周广镇  冯秀丽  刘杰  刘潇  徐芳 《海洋科学》2014,38(1):15-19

运用Mike21模型中的水动力模块对研究区的潮流场进行了模拟,分析研究区的冲淤趋势;利用经验公式,对波浪和潮流进行耦合,计算出极端条件下的最大冲刷深度,对比规划用海实施前后的最大冲刷深度,以对该区域的海岸防护、工程选址等提供科学依据。结果表明:受到填海工程的影响,龙口湾内有轻微淤积,界河至石虎咀近岸海域的波浪和潮流受工程影响而变小,冲刷强度变弱。  相似文献   

天津沿海风暴潮灾害近20年统计及其成因分析(英文)     

李希彬  孙晓燕  刘洋  张秋丰  牛福新 《海洋通报(英文版)》2014,(1)

根据塘沽海洋环境监测站从1991~2010年,20年的潮汐资料进行统计分析,分析得到天津平均每年发生近10年的100 cm以上的增水过程,天津沿海夏秋两季的最高潮位和平均潮位最高,且最大增水值多出现在夏秋两季,超过100 cm的增水天数多集中在春季和秋冬季,并从天文潮因素、气象因素、海平面上升、地面沉降,以及地理因素等,总结了天津沿海风暴潮灾害的成因,最后提出了相应的风暴潮灾害防范措施。  相似文献   

基于紫外荧光法检测水中油含量的浸入式传感装置的研究     

赵广立  冯巍巍  付龙文  李玲伟  肖娟  马兆虎  陈令新 《海洋通报》2014,33(1):77-83

介绍了一种基于紫外荧光分析法的水中油类污染物的检测传感器的设计。重点介绍了该传感探头的检测部分和控制部分的设计,检测部分由紫外发光二极管和探测器等组成信号采集装置,控制部分通过采用运算放大器、滤波器以及模数转换器实现了对微弱信号的高精度放大和处理。紫外荧光分析法具有快速、非接触性检测、操作简单、绿色环保无污染等优点,结合单片机技术在工程上有广泛应用。  相似文献