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1.
黄跃进 《探矿工程》2004,31(3):62-65
论述了基础施工企业现场安全检查的意义、标准、内容、方法和检查结果处理,介绍了运用主次因素分析法、因果图分析法进行现场检查资料统计分析的方法和实例。  相似文献   

2.
方洁 《江西地质》1994,8(2):110-114
该文运用多元统计分析中的相关分析和因子分析方法,对金山金矿作了初步研究后指出:金矿化主要与变质作用有关,随变质程度加深而加强,与基性岩和砷元素无直接关系;至少经历有三次热液迭加。从而认为金山金矿是一个多成因、多阶段、多物质来源的多因复成矿床。  相似文献   

3.
地质数据的BP网络分析方法   总被引:3,自引:0,他引:3  
数学地质中母函数选取和系数求解是函数逼近的两个关键问题,目前在地质数据的多元统计分析中广泛应用的回归分析或其他映射方法均有局限性。本文采用ANN中的BP网络模型较好地解决了这两个问题,并对理论和实际和数据进行了比较与验证,结果表明,BP网络有助于提高地质数据处理的可靠性与预测的精度。  相似文献   

4.
以成都东部地区某工程项目勘察岩石试验成果为例,通过对岩石数据统计分析,发现泥岩在不同高径比下岩石单轴抗压强度数据呈现的差异性较大,对于岩石参数取值建议造成了很大影响。为进一步验证和分析尺寸效应对极软岩岩石单轴抗压强度的影响,通过建立对比试验模型、取样试验,分析了不同高径比的极软岩岩石单轴抗压强度差异特征,并对差异较大的原因和影响因素进行了阐述,对于工程勘察中极软岩单轴抗压强度试验的应用有一定借鉴意义。  相似文献   

5.
内蒙赤峰莲花山金矿床构造化探特征及成矿预测   总被引:1,自引:0,他引:1  
构造化探是研究构造和地球化学之间的联系,通过多元统计分析确定矿构造的化学元素组成。对莲花山矿进行构造化探分析,确定不同期次和方向的成构造的指标元素组合。  相似文献   

6.
吴玉明 《水文》2003,23(4):39-40,29
沱江上游洪水属典型天然河道洪水特性,采用历史洪水系列,分析了厄尔尼诺现象和太阳黑子活动对沱江上游洪水的影响,并通过分析周期变化规律及数理统计分析预报等多种方法,综合分析了各种相关因子对沱江上游三皇庙水文站历年最大流量的影响,从而提高了沱江上游长期洪水预报精度。  相似文献   

7.
矿区土壤重金属污染严重威胁着生态环境和周边居民的健康,对其进行有效监管意义重大。河北西石门铁矿是邯邢地区的大型磁铁矿床,针对该矿区土壤重金属污染亟待开展综合研究。本文以西石门铁矿一号矿区为研究对象,利用地球化学、统计学、地理信息学等多学科技术,对9种典型土壤重金属的空间分布和污染风险进行分析。采用ICP-MS测定重金属含量,通过描述性统计分析、多元统计分析和空间插值分析得到重金属超标率、污染来源及空间分布特征,并结合单因子污染指数、内梅罗综合污染指数、潜在生态危害指数评价其污染风险。描述性统计分析结果显示,矿区土壤Co的超标率为75.83%,属重度污染,Cu、Cd、As的超标率分别为14.70%、21.40%和13.29%,属中轻度污染,Cr、Ni、Zn、Pb和Hg的超标率均低于5%,属轻度污染;多元统计分析结果显示,Cr、Ni、Zn、Cd、As和Pb来源于成矿区自然风化环境污染,Co和Cu来源于采矿生产、化肥使用造成的人为环境污染,Hg来源于人为因素造成的局部污染;空间插值分析结果显示,重金属含量在马会河两岸露天采矿区较高,在河流和居民区较低;污染风险评估结果显示,研究区内梅罗综合污...  相似文献   

8.
该文在TM图像处理和遥感目视解译基础上,利用线性体统计分析和遥感图像数字分析工作站,提取图像在岩体成因方面所显示的不同特征,对康滇地轴不同岩体的成因意义进行尝试性的定量分析和探讨。  相似文献   

9.
对雅砻江某电站的水样进行多元统计分析,水样的八个指标Q型聚类,对地表水及地下水进行了水文地质初步分类,主因子分析反映了与地下水形成作用有关的三个重要的水文地球化学作用,即岩溶作用、黄铁矿的氧化作用以及地下水的溶滤作用。结合多元统计结果以及本区的水文地质条件,对地下水系进行了分类。  相似文献   

10.
以宁阳城区主要持力层粉质粘土为分析对象,根据最近几年在宁阳县施工的16个工程地质勘察成果和土工试验结果进行了分析研究,并对其物理力学性质进行统计分析,得出该主要持力层——粉质粘土的定性结论和定量设计参数建议值。  相似文献   

11.
通过对本局近三年综合统计经济指标数据的对比,说明经济出现了快速增长,而这种快速发展主要是得益于地勘业的复苏(煤勘收入的年平均增长率112%)与改变传统经营模式经营的结果(地质成果收入年平均增长率364%).面对地勘业的繁荣期,提出实现经济跨越式发展应进一步考虑的的几个问题(地质勘查业的投资方向决策、地质成果经营方式的适时调整等).  相似文献   

12.
整装勘查信息系统应用   总被引:1,自引:0,他引:1  
以服务整装勘查业务管理与研究、支撑整装勘查区进展与成果展示为目标,基于GIS开发了以地质、矿产地、工作程度、矿业权、物探、化探、遥感、潜力评价成果等空间数据为基础的整装勘查信息系统。以大湖塘钨(铜)多金属矿整装勘查区为例,对系统的功能进行了应用与验证。案例应用结果表明: 系统界面友好,功能齐全明了,易学习易操作,可将各类数据组合叠加浏览,提供"一张图"的数据空间展示,用户可通过在全国地图上直观地浏览各整装勘查区矿产勘查进展,建立矿产勘查进展空间分布格局,还可以借助系统完成统计分析、专题图件制作等,极大提高了整装勘查业务管理和研究的效率。  相似文献   

13.
Flooding is a serious problem in Jakarta, and detailed estimation of flood damage is necessary to design optimal flood management strategies. This study aims to estimate flood damage in a densely populated area in Jakarta by means of a survey, to develop the relationship between flood characteristics and flood damage, and to compare the damage estimates from the survey with the damage estimates obtained by a flood damage model for Jakarta, i.e. the damage scanner model. We collected data on economic losses of the January 2013 flood in a survey of flood-affected households and business units in Pesanggrahan River. The actual flood damage in the survey area is US$ 0.5 million for the residential sector and US$ 0.7 million for the business sector. The flood damage for a similar event in the same area based on the damage scanner model is estimated to be US$ 1.3 million for the residential sector and US$ 9.2 million for the business sector. The flood damage estimates obtained by the survey approach are lower compared to the damage scanner approach due to different ways in obtaining flood damage data and in defining the maximum flood damage per object, the different spatial levels of analysis, and uncertainties in constructing the flood damage curves that were applied in the damage scanner model.  相似文献   

14.
樊华 《中国煤田地质》2003,15(6):104-105
交流了如何做好企业的成本预测、日常管理及成本控制,从而达到提高企业的经济效益,增强企业的发展空间,激发企业的内在动力和减少压力之目的。  相似文献   

15.
葛佐  王想红  张怀东  文敏 《地质通报》2016,35(6):1025-1033
在综合分析地质矿产调查评价专项项目管理办法、管理职责与权限、管理内容与要求的基础上,针对传统模式管理弊端和当前管理难题,运用信息化技术手段,构建了基于SOA的纯B/S体系架构,采用工作流技术和快速开发平台搭建了地质矿产调查评价专项项目管理系统。系统实现了项目管理全业务、全生命周期的线上流程管控,具有项目信息管理、立项管理、设计评审审批管理、合同管理、委托业务管理、会议管理、质量管理、成果管理、资料管理、统计分析等功能模块,不仅满足各级别人员的工作需求,提高了工作效率,同时有效推进了项目管理的规范化、系统化、信息化和科学管理水平。该系统的上线运行对相关单位的项目管理工作具有指导和借鉴意义。  相似文献   

16.
Landslide risk assessment and management: an overview   总被引:29,自引:0,他引:29  
Landslides can result in enormous casualties and huge economic losses in mountainous regions. In order to mitigate landslide hazard effectively, new methodologies are required to develop a better understanding of landslide hazard and to make rational decisions on the allocation of funds for management of landslide risk. Recent advances in risk analysis and risk assessment are beginning to provide systematic and rigorous processes to enhance slope management. In recent years, risk analysis and assessment has become an important tool in addressing uncertainty inherent in landslide hazards.This article reviews recent advances in landslide risk assessment and management, and discusses the applicability of a variety of approaches to assessing landslide risk. Firstly, a framework for landslide risk assessment and management by which landslide risk can be reduced is proposed. This is followed by a critical review of the current state of research on assessing the probability of landsliding, runout behavior, and vulnerability. Effective management strategies for reducing economic and social losses due to landslides are described. Problems in landslide risk assessment and management are also examined.  相似文献   

17.
Natural disaster risk, a long-time concern in the insurance industry, is increasingly recognized as a present danger in the business strategies of risk control and enterprise management agencies. Floods and earthquakes can cause massive loss of life and infrastructure, resulting in business interruption and heavy casualties. Many of the short-term developmental strategies employed throughout the world have only served to exacerbate the impact of natural disasters. Therefore, this study presents a review of formal methods that are commonly used in risk and uncertainty analysis in planning and concludes with a critical assessment of the advantages and disadvantages of the different priority setting methods. Our focus is a preliminary proposal for developing an efficient probabilistic approach to facilitate design optimization that involves probabilistic constraints.  相似文献   

18.
Hurricane surge events have caused devastating damage in active-hurricane areas all over the world. The ability to predict surge elevations and to use this information for damage estimation is fundamental for saving lives and protecting property. In this study, we developed a framework for evaluating hurricane flood risk and identifying areas that are more prone to them. The approach is based on the joint probability method with optimal sampling (JPM-OS) using surge response functions (SRFs) (JPM-OS-SRF). Derived from a discrete set of high-fidelity storm surge simulations, SRFs are non-dimensional, physics-based empirical equations with an algebraic form, used to rapidly estimate surge as a function of hurricane parameters (i.e., central pressure, radius, forward speed, approach angle and landfall location). The advantage of an SRF-based approach is that a continuum of storm scenarios can be efficiently evaluated and used to estimate continuous probability density functions for surge extremes, producing more statistically stable surge hazard assessments without adding measurably to epistemic uncertainty. SRFs were developed along the coastline and then used to estimate maximum surge elevations with respect to a set of hurricane parameters. Integrating information such as ground elevation, property value and population with the JPM-OS-SRF allows quantification of storm surge-induced hazard impacts over the continuum of storm possibilities, yielding a framework to create the following risk-based products, which can be used to assist in hurricane hazard management and decision making: (1) expected annual loss maps; (2) flood damage versus return period relationships; and (3) affected business (e.g., number of business, number of employees) versus return period relationships. By employing several simplifying assumptions, the framework is demonstrated at three northern Gulf of Mexico study sites exhibiting similar surge hazard exposure. The framework results reveal Gulfport, MS, USA is at relatively more risk of economic loss than Corpus Christi, TX, USA, and Panama City, FL, USA. Note that economic processes are complex and very interrelated to most other human activities. Our intention here is to present a methodology to quantify the flood damage (i.e., infrastructure economic loss, number of businesses affected, number of employees in these affected businesses and sales volume in these affected businesses) but not to discuss the complex interactions of these damages with other economic activities and recovery plans.  相似文献   

19.
利用空间统计分析方法能够扩展和加强GIS的空间分析功能,从而更深入地探索、分析、处理和解释经济发展的空间模式与空间关联。将空间统计分析与GIS相结合,探索了江西省各县域经济的空间分布格局与规律。结果表明,江西省各县域经济存在显著的空间自相关和聚集模式,经济发展在空间上具有明显的规律。  相似文献   

20.
通过探讨农用地整理的时序,为规范土地整治管理提供技术支撑。运用综合评价法、实证分析法,选取自然经济社会条件、耕地利用现状和农用地整理3个因素、6个评价因子,构建农用地整理评价指标体系。以山东省日照市为例,进行实证分析,确定49个乡镇农用地整理时序。得出通过综合评价确定农用地整理时序,能够使农用地整理管理更加科学化和规范化。  相似文献   

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