基于POI数据的郑东新区服务业空间聚类研究

探讨城市新区的服务业空间格局,对城市新区规划和服务业空间布局的优化具有重要指导意义。采用POI数据对郑东新区服务业的总体、分行业空间布局进行聚类,结果显示：① 在总体上,聚类呈现“414”的空间体系,各聚类所在区域的通达性较好;服务业在功能区内部聚集和跨越功能区聚集并存;噪声点分布零散,局部出现了服务业聚集的潜力区域;空间临近效应、行政力量带动和市场导向作用导致服务业空间极化特征明显。② 从分行业来看,部分行业的重要空间节点分布存在一定差异,CBD核心区和商住物流区成为各行业空间节点的分布区域;部分行业的空间节点与功能区的产业定位存在吻合与错位特征。最后,从规划视角提出了郑东新区不同功能区产业结构优化的方向。     

南京地铁三号线地质环境特征与地质灾害防治

南京地铁三号线隧道工程穿越长江、古城区的秦淮河古河道及岗地、岗间坳地区,工程地质、水文地质条件复杂。工程建设将引发和遭受滑坡、膨胀土、岩溶地面塌陷,砂土涌水涌砂,软土变形、不均匀沉降地质灾害。阐述了线路工程所处的地质环境条件及引发、遭受地质灾害的类型,分析了其危害程度,提出了地质灾害预防措施。     

微花岗岩类包体与岩浆的扩散作用和熔离作用——以诸广山桂东、上堡岩体为例

诸广山加里东期桂东及上堡黑云母花岗闪长岩体中的微花岗岩类包体包括同源包体和析离体。同源包体与寄主岩的暗色矿物组成不同,主要含角闪石;析离体与寄主岩中的暗色矿物组成相同,主要含黑云母。包体与寄主岩的矿物、岩石化学、地球化学及产状特征对比表明,这两种包体的形成涉及到岩浆内部组分的相互扩散、岩浆的熔离、对流及派生岩浆的相互混合。形成微花岗岩类包体的偏基性岩浆大多数是中酸性岩浆自身演化的产物。微花岗岩类包体的形成是岩浆结晶过程的记录。     

Geochemistry and Modes of Occurrence of Hazardous Trace Elements in the No. 11 Coal Seam, Antaibao Surface Mine, Shanxi Province

Concentrations of seventeen hazardous trace elements including As, Pb, Hg, Se, Cd, Cr, Co, Mo, Mn, Ni, U, V, Th, Be, Sb, Br and Zn in the No.ll coal seam, Antaibao surface mine, Shanxi Province were determined using Instrumental Neutron Activation Analysis （INAA）, Inductively Coupled Plasma Atomic Emission Spectrometry （ICP-AES）, Cold-Vapor Atomic Absorption Spectrometry （CV-AAS） and Graphite Furnace Atomic Absorption Spectrometry （GF-AAS）. Comparisons with average concentrations of trace elements in Chinese coal show that the concentrations of Hg and Cd in the No. 11 coal seam, Antaibao surface mine are much higher. They may be harmful to the environment in the process of utilization. The variations of the trace elements contents and pyritic suffur in vertical section indicated that： （a） the concentrations of As, Pb, Mn, and pyritic sulfur decrease from roof to floor; （b） the concentrations of Cr, Zn and Mo are higher in roof, floor and lower in coal seam; （c） the concentration of Br, Sb, and Hg are higher in coal seam and lower in roof and floor; （d） the concentrations of Mo, V, Th and AI vary consistently with the ash yield. Cluster analysis of trace elements, pyritic sulfur, ash yield and major elements, such as AI, Fe, P, Ca shows that： （a） pyritic sulfur, Fe, As, Mn, Ni, Be are closely associated and reflect the influence of pyrite; （b） Mo, Se, Pb, Cr, Th, Co, Ca and A! are related to clay mineral, which is the main source of ash; （c） U, Zn, V, Na, P maybe controlled by phosphate or halite; （d） Hg, Br, Sb and Cd may be mainly organic-associated elements which fall outside the three main groups. The concentration distribution characteristics of trace elements in coal seam and the cluster analysis of major and trace elements showed that the contents of trace elements in the No. 11 coal seam, Antaibao surface mine, are mainly controlled by detrital input and migration from roof and floor.     

国土资源电子政务应用软件平台技术要求研究

为提高行业软件系统的重用性,本文通过对MIS应用软件平台与GIS应用软件平台进行比较研究,结合国土资源业务特点,提出了国土资源电子政务应用软件平台的技术要求。     

浅谈地勘单位绩效考核与评价

针对地勘单位绩效考核和评价涉及到的资产界定、责任划分、考核形式、业绩确认等事项,根据实践中体会,围绕如何在维护国家、单位和个人三者利益的基础上,解决绩效考评存在的问题,完善绩效考评的制度和标准,规范地勘单位责任人的责任意识,会计监督存在的问题,提高绩效考评的有效性和权威性等内容。提出地勘单位绩效考核和评价在组织、制度、教育等方面的改进意见和建议。     

Primary Study of Surface-Wave Magnitude Determined by Chinese Stations

Using the data set of 20±2 sec and(A/T)max of surface waves recorded by Type-763 and Type-SK seismographs from five stations in Beijing and elsewhere,the mean square deviations u and relative mean deviations D of Ms values determined by five calibration functions(a,a763,a300 aN and from Msz(NEIS)are compared and analyzed.Results show that a and a763 are rather good between 20° and 160°;and a763 are rather good between 10 and 30 for 20 sec; a300 is relatively good between 160 and 179.     

甘肃合作早子沟金矿微量元素、同位素特征与成矿物质来源

甘肃合作早子沟金矿是西秦岭夏河—合作金矿富集区最著名的特大型金矿床,经过近20年持续勘查,已探明资源量超过150 t。笔者等通过对2018～2021年实施的深部科研钻探SDZK8314岩芯进行系统编录和测试分析,为研究深部流体和成矿物质来源提供新的资料。研究表明,早子沟金矿中不同类型的岩石与矿石的稀土微量元素具有相似配分曲线特征,含矿岩石相对围岩具有明显更低ΣREE含量和更高的K、Sr含量,同时矿石中的金品位与K₂O含量呈现明显的正相关关系。早子沟金矿中的石英闪长玢岩n(²⁰⁸Pb)/n(²⁰⁴Pb)=38.33～38.48、黄铁矿—毒砂n(²⁰⁸Pb)/n(²⁰⁴Pb)=38.23～39.19、辉锑矿n(²⁰⁸Pb)/n(²⁰⁴Pb)=37.75～38.63,具有多源、混合铅的特征,从闪长玢岩■黄铁矿—毒砂■辉锑矿具有从上地壳到造山带甚至地幔的演化趋势。H—O同位素显示,成矿流体主要来源于岩浆水,后期有大气降水和围岩循环水的混入。矿...     

基于GIS技术中小比例尺地质调查成果资料目录检索系统的设计与实现

中小比例尺地质调查成果资料检索系统是以地理信息系统为基础,以Microsoft Visual C 6．0为开发工具,通过调用武汉中地数码科技有限公司MapGIS软件中的类库,实现了档案检索、测算距离面积、裁切输出、地图输出等主要功能,其中对检索途径的细分是系统成果的关键所在。     

A Primary Observation on Palynofacies of the Chuangde Section(Late Jurassic-Cretaceous),Gyangz■,Southern Tibet

A primary study on palynofacies,which concerns the paleoenvironments from the sight of association of sedimentary organic matter preserved in sedimentary rocks,is conducted for a Late Jurassic-Cretaceous succession at Gyangz(?),southern Tibet.Two palynofacies are recognized,which are formed in different sedimentary environments.The one in the pelagic is infertile in organic productivity and monotonous in component and is dominated by AOMA,while the other,being closely bound up with the slope,is characterized by abundant black phytoclasts that are possibly of algal origin and contains much AOM.The influence of terrestrial input is clear in the latter,for particles generated from terrestrial plants are common.A number of fossil spores and pollen together with some dinocysts are discovered,but they are normally in a bad condition of preservation.Nevertheless,this convinces us that the late Jurassic-Cretaceous succession in the Gyangz(?)area has a potential for palynological stratigraphy.We have also proved that the volume of PM can achieve similar results in presenting the productivity of organic matter as the weight of TOC does.This technique is much easier in the laboratory than that we do with TOC.