共查询到20条相似文献，搜索用时 796 毫秒
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以陕-甘天然气输气管道工程为例,根据黄土地区特征,经实地考察和有关资料分析,采用类比分析和事故树结构函数计算法,进行了黄土区输气管道工程环境风险因素识别和环境风险定性与定量分析;得出了不同区段环境风险指数和相对排序;提出了黄土区输气管道环境风险的管理措施与对策,为管道安全施工和运营提供了环境保护依据。 相似文献
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廊道式工程建设对沿线地区景观格局的影响定量研究 总被引：2，自引：0，他引：2
应用景观格局指数分析法,对比分析了西气东输豫南支线管道工程施工前后管线两侧缓冲区范围内景观格局动态。研究表明:管线建设将会引起管线附近区域土地利用发生转移;在3000m缓冲区范围内存在影响强度变化拐点,且斑块聚集度指数变化对管线建设的影响较为敏感;在类型水平上不同缓冲区多数景观指数之间没有显著性的差异,景观格局变化趋势类同;从景观水平上格局变化很难看出管线建设对沿线景观格局产生影响,但在类型和景观水平上各景观指数变化对工程建设的敏感程度不同。 相似文献
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天山北麓工业带城市工业经济结构分析 总被引：3，自引：1，他引：3
本文选择新疆区域工业发展为参照系，用Ｓｈｉｆｔ－ｓｈａｒｅ方法对天山北麓工业带６城市工业增长与工业经济结构进行分析，从动态角度判别各城市工业结构的优劣及存在问题并揭示其原因，提出发展方向。 相似文献
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Despite the vast literature on shale energy development, surprisingly little empirical research has been conducted on the shale energy communicators, communication practices, and community outreach programs. Using data drawn from a random sample of individuals in two counties in the Eagle Ford Shale region of south Texas, we present a newly-constructed unidimensional scale that can be used to measure stakeholders’ level of satisfaction with the oil and natural gas industry’s communication performance. We then examine the relationship between individuals’ level of communication satisfaction with the oil and gas industry and their perceptions of risk in regard to shale energy development in the Eagle Ford Shale. We find substantial support for the hypothesis that communication satisfaction with the oil and natural gas industry is negatively associated with risk perception. We conclude the paper with several suggestions for future research. 相似文献
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1993年中国开始从原油输出国变为原油输入国,到2010年,中国的原油进口依赖度高达53%。原油进口来源国的社会经济稳定性、原油运输线路的安全性影响到中国原油进口的安全性。本文根据ITIRI的综合国际贸易投资风险指数和原油运输线路的安全性,设计了中国从其主要原油进口来源国进口原油的风险指数。然后分析了中国各省级行政区对原油进口消费的依赖度,中国六个大区石化工业和八个石油化工基地对进口原油的依赖程度。从而分析了它们对进口原油风险的敏感度。本研究的结论是:第一,中国重要的原油进口来源国比较集中,且集中在社会经济不十分稳定的国家。第二,原油进口风险对沿海地区经济的影响远高于对内陆地区的影响。第三,沪宁杭、琼粤闽和长江中游石化基地是受原油进口风险影响最大的三个基地。根据这些结论,本文提出两方面建议:第一,建议中国原油进口来源与运输方式尽量多元化,以规避风险。第二,中国原油战略储备基地应考虑对原油进口风险敏感度大的地区。 相似文献
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从两次世界气候大会看气候学的发展 总被引：1，自引：0，他引：1
本文就1979、1990年两次世界气候大会的情势,综述气候学发展的现状,论述气候学与气候工程的关系,并就当前气候学发展的若干问题:如气候信息的搜集、传递和整理,地球气候分布与变化的研究,以及气候应用的开拓等方面提出了作者的见解。 相似文献
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根据区内所拥有的特点:产业结构处于初级变动阶段,自然资源丰富,以及大量处于隐蔽失业的农业剩余劳动力的优势还未发挥,提出了目前本区选择主导产业部门的三个准则,即:资源开发准则、相关效果准则和劳动就业准则。由此判定本区主导产业所得出的结论是:水力发电工业、矿产资源开发业(原材料工业)、农林土特产品加工工业,应成为区内的主导产业部门。 相似文献
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文章以千岛湖风景区为研究对象,从区域现状出发,对区域内自然生态、社会经济及污染源现状调查结果进行综合归纳,总结了千岛湖区域的生态风险,提出该区域的生态风险管理目标,最后从农林、城镇、工业、旅游、外来生物、灾害、流域、生态工程技术和综合管理9个方面系统地提出了区域生态风险管理对策。 相似文献
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以规模及运量最大的中国东部原油管网为研究对象,选取2009年37条管道和满洲里-大庆铁路、20个主要油田及港口（口岸）、32个主要炼厂,建立原油供需平衡表,基于运费最低并考虑到不同管径管道的运输成本差异,结合空间分析与线性规划的研究思路与方法,对东部原油管网进行空间优化研究及分类评价。结果表明：（1）2009年中国东部原油管网优化运费较实际运费减少了34.5%,表明原油管网总体流通效率不高,具有较大提升空间;（2）东北地区各管道流通状况相对较好;华北地区管道均为负荷不足或无负荷类型,流通效率不高;华东地区黄淮分区的多数管道为负荷不足类型,仅有两条百万吨流量管道为良好类型,长江中下游分区的甬沪宁线和仪金线为超负荷类型。 相似文献
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The Athabasca oil sands deposit, Alberta, Canada, is one of the largest known hydrocarbon accumulations. The efficient exploitation of this deposit, as well as other oil sand accumulations throughout the world, is based onin situ recovery and surface mining methods. Quantitative modeling of deposit heterogeneity provides a valuable engineering tool. In the present study, conditional simulation was used to model oil-saturated zones in part of the Athabasca deposit. This technique generates equiprobable models of thein situ variability of essential deposit attributes that honor the available data and their spatial statistics. The application of the technique is based on the delineation of geologically homogeneous zones within the host McMurray Formation, their statistical validity, and the integration of geological interpretations. The geological framework is developed, and subsequently, high resolution conditionally simulated models of three identified hydrocarbon-bearing zones are generated, in terms of the zone boundaries and the percent weight of oil saturation. These models serve as “what-if” tools for risk assessment and future planning. 相似文献
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深基坑工程施工中安全事故的发生给社会及施工企业带来了不良影响和巨大的经济损失,如何减少深基坑工程安全事故发生率,降低工程风险是一个值得研究的问题。本文通过将模糊理论与故障树分析方法相结合,建立了基于模糊故障树法的深基坑支护工程项目风险评估模型,克服了传统故障树方法忽略底事件发生概率的不确定性这一缺陷。通过对某深基坑工程实例的计算分析,说明了本文所建立的模型在深基坑工程风险评估中具有较好的理论价值与实际应用价值。 相似文献
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Mansoor Hamood Al-Harthy 《Natural Resources Research》2007,16(4):305-312
Current practice shows that the use of portfolio and utility theory is very low among petroleum companies. This article advocates
the use of both portfolio theory and utility theory as decision-making tools to improve performance of oil and gas companies.
We introduce a model that can be practically used and applied in the oil and gas industry. This model generates an optimized,
efficient portfolio and, at the same time, enables the decision maker to incorporate his risk attitude and policy. This can
only be done by combining both the portfolio theory and utility theory through an approach called the utility mean-variance
model. A typical oil portfolio optimization problem is investigated by applying both portfolio and utility theories. Through
the utility mean-variance model, an efficient frontier that captures decision maker risk attitude is achieved. 相似文献
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High seismic activity, difficult permafrost and hydrogeological conditions of South Yakutia (Russia) complicate building and exploitation of engineering construction and require additional detailed and complex research. These conditions are evident within two sites. The first site is located in the middle reach of the Duray River, where it is crossed by the highway Lena. The second site is located on the right side of the Chulmakan River Valley, 400 meters to the east of the ESPO oil pipeline route. Seismic events, occurring four years ago, led to landslides in the mentioned sites. Formation of joint fissures on slopes assisted drainage of aquifers of free water exchange zone. It is worth noting that at the Duray River site, 59 cm of active soil slumping movement towards the roadbed has occurred within two summer months. Such a process is complicated by cryogenic disintegration of rocks in the base of the landslide body due to groundwater discharge and icing formation in winter. 相似文献
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广东省海岛资源开发与相关产业选择 总被引：1，自引：0，他引：1
本文对广东海岛优势资源及开发条件进行综合评价，依据产业的科学性提出建立以港口为中心的交通运输业，以基础工业为主体的港口工业，以及海洋水产业、海洋生物工程和旅游业。 相似文献