遥感技术在合肥城市用地评定中的应用研究     

杨则东  李良军  鹿献章 《安徽地质》1997,(1)

本文是应用最新航摄的彩红外航片解译调查城市用地适宜性，结合地形地貌、水文工程和地质构造条件，进行合肥城市用地评定，为城市总体规划修编提供科学依据  相似文献   

Study on analysis method of tritium in seawater     

Zeng Xianzhang  Chen Yiannan  Xu Shengli  Liu Jiyuan 《海洋学报(英文版)》1991,10(2):237-248

-The reclamation rate formula for concentrating tritium by the addition of "regular and quantitative aqueous sample" is advanced.Effects of different adding modes on reclamation rate and the reclamation rate reappearance are studied; and the analytic program of tritium in seawater is also proposed. By using Fe-Ni electrodes and the electrolysis temperature of 2± 0. 5℃, β value reaches 20. Reclamation rates reach 83% and 76% when 250 cm3 and 500 cm3 seawater is concentrated to 8 cm3.The relatively appropriate toluene/Trition ratio for counting aqueous sample under the normal temperature is proposed.The computer program of different addition electrolytic concentrations for measuring tritium is coded, and the tritium data base is established.  相似文献   

闽江口底沙运动的放射性示踪法研究   总被引：2，自引：0，他引：2  

邹汉阳  程汉良 《台湾海峡》1990,9(2):93-99

本文报道了在福建省首次进行的应用放射性示踪法观测闽江口底沙运动的研究结果。详细叙述了放射性示踪沙的实验方法,结合水文和地质资料具体分析了实验结果,为外沙抛泥区的选择和内沙航道增深工程提供了科学依据。  相似文献   

闽江口放射性示踪沙实验的辐射安全分析和环境污染评价     

邹汉阳  程汉良 《台湾海峡》1990,9(2):100-107

本文报道了我们在应用放射性示踪沙观测闽江口底沙运动的实验过程中,同时进行的现场辐射剂量监测和实验区周围环境的放射性污染监测方法和结果,并进行了辐射安全分析和环境污染评价。  相似文献   

Structure Styles of Mesozoic-Cenozoic U-bearing Rock Series in Northern China   总被引：1，自引：0，他引：1  

JIN Ruoshi  MIAO Peisen  SIMA Xianzhang  LI Jianguo  ZHAO Hualei  ZHAO Fengqing  FEN Xiaoxi  CHEN Yin  CHEN Lulu  ZHAO Lijun  ZHU Qiang 《《地质学报》英文版》2016,90(6):2104-2116

In Northern China, sandstone-type uranium (U) deposits are mostly developed in Mesozoic-Cenozoic basins. These U deposits are usually hosted in unvarying horizons within the basins and exhibit typical U-forming sedimentary associations, which is referred to as U-bearing rock series. This study describes the structural features of U-bearing rock series within the main Mesozoic-Cenozoic U-producing continental basins in Kazakhstan, Uzbekistan, and Russia in the western segment of the Central Asian Metallogenic Belt (CAMB), and Northern China in the eastern segment of the CAMB. We analyze the basic structural conditions and sedimentary environments of U-bearing rock series in Northern China and classify their structural styles in typical basins into river valley, basin margin, and intrabasin uplift margin types. The intrabasin uplift margin structural style proposed in this study can be used to indicate directions for the exploration of sandstone-type U deposits hosted in the center of a basin. At the same time, the study of structural style provides a new idea for exploring sandstone-type U deposits in Mesozoic-Cenozoic basins and it is of great significance to prospecting of sandstone-type uranium deposits.  相似文献   

新疆阿勒泰地区变质岩中微古植物群的发现及其地质意义   总被引：5，自引：0，他引：5  

阎永奎  张全忠  秦元喜  张良筹  董志远  张福振  左宪章 《新疆地质》1989,(2)

阿勒泰地区变质岩很发育,而且厚度巨大,属于地槽型浅海复理石沉积.由于变质岩地层缺少生物化石,地质学者对其划分及对比有不同的认识.笔者(1987)在阿勒泰地区研究地层古生物时,从黑山头—喀纳斯湖、锡伯渡—库鲁木提及北塔山—青河地区的29个剖面采集了216个微生物样品,其中15个剖面含震旦纪的微古植物群,1个剖面含晚奥陶世—早志留世的微古植物群,这些古植物的发现对查清这些变质岩岩层的时代及地层划分、对比将起重要的作用.  相似文献   

光学相衬显微术在地学中应用的探讨     

周汉明  黄思骥 《地质科技情报》1992,11(1):95-99

本文介绍了光学相衬显微术的基本原理、方法和应用。光学相衬显微术能够观察到用普通显微术无法观察到的透明活体微生物的细微结构,50年代应用到矿物晶体微形貌学中,进行晶体表面生长的动态观察。笔者主要用来观察透明矿物晶体的结晶状态及显微构造。观察的结果表明,运用这种方法在地学研究中将会发现一些未曾开发的新内容。  相似文献   

三峡库区土地资源的多源信息综合制图法     

曹锦铎  陈鸿昭  陈斌飞  曾志远  潘贤章 《山地学报》1992,(2)

本方法用来编制1:10万长江三峡库区土地资源评价图,以卫星数据计算机监督分类为基础,配合以野外调查和遥感、非遥感的资料。把这些资料作为多源信息,加以综合后,编制出的土地资源评价图,经实地校核,与SPOT卫星像片、卫星数据计算机监督分类图相套合,准确率分别为88,91,93(％)。  相似文献   

Numerical simulations of shake-table experiment for dynamic soil-pile-structure interaction in liquefiable soils   总被引：5，自引：4，他引：1  

Tang Liang  Baydaa Hussain Maula  Ling Xianzhang  Su Lei 《地震工程与工程振动(英文版)》2014,13(1):171-180

A shake-table experiment on pile foundations in liquefi able soils composed of liquefi able sand and overlying soft clay is studied. A three-dimensional(3D) effective stress fi nite element(FE) analysis is employed to simulate the experiment. A recently developed multi-surface elasto-plastic constitutive model and a fully coupled dynamic inelastic FE formulation(u-p) are used to model the liquefaction behavior of the sand. The soil domains are discretized using a solid-fl uid fully coupled(u-p) 20-8 noded brick element. The pile is simulated using beam-column elements. Upon careful calibration, very good agreement is obtained between the computed and the measured dynamic behavior of the ground and the pile. A parametric analysis is also conducted on the model to investigate the effect of pile-pinning, pile diameter, pile stiffness, ground inclination angle, superstructure mass and pile head restraints on the ground improvement. It is found that the pile foundation has a noticeable pinning effect that reduces the lateral soil displacement. It is observed that a larger pile diameter and fi xed pile head restraints contribute to decreasing the lateral pile deformation; however, a higher ground inclination angle tends to increase the lateral pile head displacements and pile stiffness, and superstructure mass seems to effectively infl uence the lateral pile displacements.  相似文献   

电成像测井储层非均质性评价方法在川东北G地区FC段地层的应用     

李昌  司马立强  沈安江  寿建峰  周进高 《地球物理学进展》2015,(2):725-732

岩心、成像测井资料表明川东北G地区FC段碳酸盐岩储层溶孔、裂缝发育,非均质性较强.根据溶孔、裂缝的发育程度与分布特征,可划分为6种典型储层类型.因此,有效评价储层非均质、划分储层类型是该区油气勘探与开发工作的关键.电成像测井资料能通过定性识别孔洞与裂缝对储层非均质性进行定性评价,但是由于缺乏能综合表征溶孔、裂缝等特征的定量参数,使得电成像测井资料对储层非均质性的定量表征存在问题.为此,基于分形理论,提出一种电成像测井定量评价方法,即计算电成像测井图像的分形维数来定量描述储层非均质性.储层类型与分形维数相关分析表明,分析维数可综合表征储层溶孔、裂缝,评价储层非均质性.应用实例表明,基于电成像测井分形维数的非均质性表征与储层类型划分应用效果较好,推动了该区的油气勘探与开发工作.  相似文献