煤矿安全事故预警、监控与应急响应关键技术研究

分析了煤矿安全生产事故应急预案存在的主要问题,提出应当重视对危险源的重新评估、危险源数据库的建立和实时监控、通过计算机建立起事故应急响应平台的研究,这些研究应当是煤矿安全事故预警、监控与应急响应的关键技术.并探讨了这些关键技术的核心内容,指出通过对危险源的重新评估和建立各类危险源数据库,采取加强管理、重点防护及计算机应用等先进手段的基础上,建立重大事故应急预案救援信息管理系统,有助于最终实现应急指挥智能化,信息化,高效化,最终实现事故预防、监控、救援的一体化,发挥出应急预案的真正功效.     

道路危险化学品运输监控与事故应急系统构想

针对道路危化品运输事故频发的现状,提出一种基于RFID技术．传感技术,结合GPS,GIS和现代通信技术的危化品运输综合监控与事故应急救援系统,阐述了系统的总体设计思想及组成原理,该系统不仅实现危化品运输状态的实时监控,在发生事故后,也能准确、及时地进行应急救援,提高了危化品运输的安全性与可靠性。     

事故应急救援预案

随着现代化生产的发展，其规模日趋扩大，生产过程中巨大能量潜在着危险源，尤其是重大火灾、爆炸、毒物泄漏事故危害极大。事故应急救援预案是针对危险源而制定的一项应急反应计划。世界各国纷纷以法律的形式对事故应急救援预案做了相关规定。本文对事故应急救援预案、事故应急救援预案在国外的发展、事故应急救援预案包括的主要内容、法国事故应急救援情况作了简单介绍，并提出了我国在这方面发展应注意的一些问题。     

科技护航 保障安全——湖南三恒在湘推出安全生产综合监管调度管理平台

<正>近日,湖南三恒安全科技有限公司与迅天软件有限公司签署战略合作协议,共同打造安全生产综合监管调度平台,依靠科技进步和先进适用技术装备,从源头上控制安全风险,从根本上提升安全保障能力,努力为全省经济发展创造稳定向好的安全生产环境,用科技护航湖南安全生产。安全生产综合监管调度平台软件是由湖南三恒安全与迅天软件合力打造的湖南各级安全生产综合监管调度管理平台,可实现矿山"六大系统"、尾矿库监测监控、烟花爆竹生产监控、危化品安全监控等各类监测监控系统的集成联网,安全生产重大危险源监管、隐患排查治理、事故     

考虑应急救援的危化品泄露事故后果风险评估

采用层次分析法(AHP)和案例分析相结合的方法,建立了基于事故后果评价的危化品风险评估模型。模型综合考虑了事故直接后果、次生衍生事故、以及应急救援等因素,并提出了应急救援的风险抵消作用的建模方法。利用该模型对危化品泄漏事故进行了风险评估,采用实际案例对评估结果进行了验证。基于该模型分析了应急救援对事故后果风险的抵消作用。研究表明:所建立的风险评估模型能较好地反映实际事故后果情况,应急救援力量对减低事故后果风险具有重要作用,在风险评估中应予充分考虑。     

湖南精细化工产业基地——云溪工业园:“园区管理”护航化工企业安全发展

化工园区具有危险源集中化、园区规模化等特点,如何对化工园区进行合理规划,预防和控制潜在事故,降低事故造成的损失和影响,确保化工园区生产安全和社会稳定,实现企业良性发展、可持续发展,是各级政府、园区建设者与管理者关注的核心问题。近日,本刊记者走访了我省唯一一家精细化工产业基地——云溪工业园,探寻化工园区构建安全生产长效机制的手段和措施。     

基于3DGIS的化工企业重大危险源信息系统研究

建立基于3DGIS技术的重大危险源信息系统,以三维动态视景形象,直观地向用户展示重大危险源的现实状态及事故模拟结果,有针对性地提高化工企业重大危险源监管水平及事故应急救援能力,对预防和控制重大事故有重要的意义.文章介绍了系统的目标、任务、体系结构和数据库的设计,以及系统的主要功能与关键技术.     

矿山应急救援系统

为有效控制煤矿灾害事故的进一步扩大,减少人员伤亡和财产损失.采用现场分析和软件开发的方法,根据"开滦集团国家级矿山应急救援基地"的实际需要,将网络地理信息系统(WebGIS)引入矿山救援中,利用MapGuide平台,结合应急救援流程开发完成了矿山应急救援管理指挥系统.结果表明:该系统能够分析处理大量现场数据,将实时监测的数据用于分析决策中,对井下危害程度进行评价;能及时启动应急救援程序,将应急救援流程化,从而有效控制危险源.该系统为有效实施应急救援提供了保障,具有重大的实际意义.     

基于三维GIS的制药行业消防安全应急救援平台设计和研究

以天津某化工产业园区内的制药厂为例,以无线传输与物联网技术为载体、三维GIS为支撑,开发了具有三维可视化功能的制药行业安全预警与灭火救援平台.该平台日常可以实施远程监控、安全管理、监测监控、风险分析与预警;突发状态下可以实施最佳安全疏散路线形成、灭火救援辅助决策等功能.该平台实现了对关键装置和要害部位的实时监控与远程监控.对提高企业管理、预防和处理突发性重特大事件的水平,降低事故发生率与事故损失具有重要的意义.     

基于多Agent的危险源分布式监控系统

针对危险源特别是重大危险源的分布式远程监控预警系统对预防重大事故、应急救援、管理决策等具有重要作用.文中基于多Agent技术,提出了多Agent组(MAG)的概念和模型,并分析其特点及与多Agent系统(MAS)的区别与联系.进而在危险源监控任务的基础上建立了危险源监控的MAG功能模型,即把针对一个危险源的监控任务分解到监控Agent、远程通信Agent、特征提取Agent、预警Agent和界面Agent等5个Agent中,它们自主运行并通过协作构成一个多Agent组共同完成监控任务,由多个分布的MAG构成分布式危险源监控系统.最后基于以上MAG模型和分布式监控系统结构,建立了液化石油气储存装置的危险源监控原型系统,分析了该系统中实现的各个Agent的主要功能.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.