The result shows that the risky area is closely related with not only the source term,but also the meteorological conditions and the time after the accident;the high concentration zone spread near the leaking point under the unstable and strong winding meteorological conditions,while,the high concentration zone not only lasts for a long time,but also has the transportation function under the.
结果表明,风险区域不仅与氨气泄漏的源强有关,而且与事故状态下的气象条件密切相关,在风速大、不稳定的气象条件下,有害气体泄漏在空气中形成的高质量浓度区多分布在事故源的近距离处;而在静风、稳定的气象条件下,高质量浓度区不仅持续的时间长,而且伴随着空气的稀释作用,随风力的输送向下风向飘移。
It is very complex engineering system for the emergent assistance at the leaking accident of the toxic and harmful gas,and the key to the settlement of the question lies the right determination of the potential risky area.
突发性事件的救援工作是一个非常复杂的系统工程,而关键问题是及时准确地确定风险区域。
Based on ANSYS software,this article analyses and computes the seal shell of petroleum casing hydrostatic test unit by finite element method,finds out the dangerous region and the Von Mises Stess 374Mpa from the displacement and stress cloud images,which provides the representative theoretic guidance for seal shell design.
本文利用ANSYS软件对石油套管水压试验装置中的密封壳体进行有限元分析,通过建模、分网、对密封壳体内施加面载荷70Mpa,计算得到密封壳体位移、应力云图,最大等效应力为374Mpa,进而找出密封壳体的危险区域在壳体中心处,从而为密封壳体设计提供针对性的理论指导。
Division of flood damage dangerous zone in Jilin province;
吉林省洪灾危险区域的划分
The basic units of natural disaster risk regionalization also can be produced by overlaying two maps produced.
两图叠加后,生成南通市自然灾害风险区划基本单元,采用自下而上的定量区划方法,合并得到自然灾害风险区划图,最后分别论述了每个风险区的自然灾害和社会经济的特征。
The risk regionalization of agrometeorological calamities was accompl.
从风险的角度出发，分析农业气象孕灾环境、致灾因子、承灾体的抗灾能力和灾情，计算出主要农业气象灾害风险度，并进行了灾害风险评估，进一步揭示农业气象灾害对农业生产的影响程度，作出农业气象灾害风险区划，并进行了评述。
In order to forecast and early warning the geological disaster in western region, the paper argues the necessity and importance for researching the risk regionalization of geological disaster, where the disasters often happen due to the complex geology and terrain.
因此 ,有必要对我国西部地区进行地质灾害风险区划研究 ,以预测、预警这个地区地质灾害。
Classification of hazardous area and electric equipment used in the area;
危险区域分级和危险区域电工设备的选用
The correct prediction of the hazardous area in toxic gas leaking accident can provide a good basis to establish a reasonable and effective emergency response program and to implement an effective emergency site control and handling activities.
文章以平板模型为理论依据,以VB为工具,研究了毒气泄漏应急处置危险区域分析系统,确定毒气泄漏事故的危险区域。
Partition of spontaneous combustion dangerous zone and prediction of spontaneous combustion based on numerically modeling the flow field at fully mechanized caving face;
基于流场模拟的综放面自燃危险区域划分及预测
This paper discusses the principales of debris flow risk zonation,i.
提出了把区域泥石流风险度作为泥石流风险区划的综合性指标 ,并给出了风险等级的划分方法。
This paper explores the methodology for compiling the torrent hazard and risk zonation map by means of GIS technique for the Red River basin in Yunnan province of China, where is vulnerable to torrent floods.
通过探讨应用地理信息系统技术编制山洪灾害风险区划图的方法。
Land subsidence disaster risk zonation by means of GIS automatically was overlaid o.
本文对1985-2005年累计地面沉降量、加权算术平均速率和地下水开采强度三个因子进行分析和叠加评价,完成了天津市区及近郊区地面沉降灾害危险性分区图;以人口密度、单位面积GDP和建设用地比重作为指标进行了易损性分析;从每平方公里水准测量公里数、地下水压采量占开采量的百分比和城市化水平这三个方面考虑防灾减灾能力;在此基础上,借助GIS空间分析方法,将危险性分区图、易损性分区图和防灾减灾能力分区图进行叠加分析,完成了天津市区及近郊区地面沉降灾害风险区划图,共分为低风险区、较低风险区、中等风险区、较高风险区、高风险区五等。
Determining method of dangerous areas around tropical cyclone based on multisource forecasts;
基于多源预报的热带气旋危险区域的确定方法