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以AHP法为研究方法,建立流域可持续发展能力综合评价指标体系,从社会协调发展、自然资源与环境和生计改善三方面进行定量分析和评价。通过指标权重的结果分析,对流域可持续发展能力影响最大的是自然资源与环境,其次是社会协调发展,最小的是生计改善。以浐灞流域为例,对流域2000年、2005年、2008年进行了流域可持续发展能力综合评价,计算综合评价分值分别为0.943 2,1.445 4,1.816 4,结果表明浐灞流域可持续发展能力逐渐增强,呈上升趋势。通过对浐灞流域的测试分析,本研究制定的评价指标和评价方法可行,且指标数据收集方便,便于推广使用,有助于提高流域的管理水平,同时对流域可持续发展的规划、治理和管理具有一定的指导意义和参考价值。 相似文献
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文章采用综合指标体系和分析层次过程的权重确定方法,对大毛小流域的可持续发展进行了评价。虽然研究存在一定局限性,但结果对于其他流域的政策制定者和决策者具有参考价值,为制定更有效的可持续发展战略提供参考。 相似文献
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从流域的角度对水资源配置后效进行评价,根据评价指标的筛选原则,设计了流域水资源配置后效评价的指标体系,运用层次分析法(AHP)和改进的BP神经网络相结合的方法构建了流域水资源配置后效评价模型。最后以淮河流域为例,采用此模型进行了评价,评价结果与实际相符。 相似文献
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针对黄土高原雨水资源利用现状和小流域雨水资源化特点,以小流域为单元,以雨水资源为研究对象,借鉴可持续发展理论,遵循科学、实用及简明的原则,构建雨水资源可持续利用评价指标体系,并利用均方差权数决策方法,对流域雨水资源可持续利用进行全面分析和定量评价。 相似文献
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对流域可持续性理念进行了概述,介绍加拿大弗雷泽流域可持续性指标体系遵循的原则和方针、选择标准和筛选过程,评价弗雷泽流域可持续性指标体系的优缺点。对我国流域可持续性指标体系的构建提出了6点建议:①指标体系要能反映国家的现行政策和法律,并与之相关;②指标体系要能体现利益相关者的利益并保证其真实参与;③要有一套科学合理的开发框架;④从流域生态系统的整体视角来研发指标体系,体现流域综合管理的理念;⑤倡导流域管理与管理科学的跨学科交叉研究;⑥结合管理科学中的数学模型对指标体系和政策进行评价。 相似文献
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分析了鹤岗市水资源开发利用现状;预测了城市需水量;提出了"十一五"期间水资源合理配置的对策与措施。 相似文献
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Analysis of causes of erosion-corrosion wear of the metal of internal surfaces of watered regions of tubes of heat-exchange devices 总被引:1,自引:0,他引:1
I. I. Belyakov V. I. Breus 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2006,40(1):44-49
Causes of the appearance of erosion-corrosion wear (ECW) on inlet regions of tubes of heat-exchange devices are considered.
Experimental data are used for determining the mechanism of the ECW process and suggesting measures for its prevention.
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Translated from élektricheskie Stantsii, No. 11, November 2005, pp. 56–62. 相似文献
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介绍SIMHYD降水径流模型的结构及计算原理,利用该模型模拟了丹江口以上汉江上游流域的月流量过程,并采用区间分析方法分析SIMHYD模型参数的敏感性。结果表明:SIMHYD模型可以较好地模拟该流域的月流量过程;根据参数敏感性大小可将SIMHYD模型参数归为3类:第1类为敏感参数,如SMSC和SUB;第2类为较敏感参数,如CRAK和K;第3类为非敏感参数,如INSC,COEFF和SQ。 相似文献
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水利枢纽下游河道水位流量关系的变化 总被引:1,自引:0,他引:1
卢金友 《水利水运工程学报》1994,(Z1)
根据水利枢纽下游河道的实测资料,得到下游河道水位流量关系的调整变化,并对其变化原因进行了分析。 相似文献
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宋隆水闸已运行70多年,工程存在设计标准低、闸门和水闸安全度不足等问题。除险加固方案经比较后,采用在闸前加闸的方案,并结合工程实际进行优化设计,加快施工进度,节省投资。竣工后经过3次大洪水考验,工程运行良好。 相似文献
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V. F. Kanarskii S. V. Kukhtii Yu. N. Vasil'ev E. F. Zhila A. A. Evtushok 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1989,23(2):73-79
Conclusion The method examined above of predicting the reworking of banks of the LR of a PSS similar to the LR of the Dnestr PSS does not claim completeness and rigorousness of the solution and, naturally, should be refined by data of subsequent onsite observations and investigations, which will make it possible to perfect both the calculation method itself and its theoretical basis.Translated fromGidrotekhnicheskoe Stroitel'stvo, No. 2, pp. 16–21, February, 1989. 相似文献
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V. V. Lgalov G. N. Tsedrov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1971,5(7):654-656
Conclusions For the first time the method use for investigating flow separators of high-head structures made it possible to recreate on
a model cavitation phenomena that occurred in the original. The studies established the main cause of destruction of the elements
of separators. The sources of cavitation that involved destruction of the concrete on the surface of the separators are: the
presence of a sharp edge at the junction of the top and side surfaces of the separator; the presence of a poorly streamlined
section at the initial part of the separator at the junction of the vertical side faces and surface of the spillway at the
entrance to the gap between the separators; the presence of construction defects on the surfaces of the separator (depressions,
pits, beds, and, especially, projections from formwork offsets). The last, as the experiments showed, are the most dangerous,
especially if their vertical face is oriented against the flow.
Rounding of the edges can eliminate the occurrence of cavitation on the side surface at the start of the separators; however,
the requirements imposed on the quality surfaces remain the same, since this does not eliminate cavitation on irregularities.
Facing of the separators and adjacent spillway surfaces with metal provides sufficient smoothness and greatly increases the
resistance of the surface to cavitation erosion. Here one can consider that the lining practically eliminates the appearance
of concealed but probable defects on the concrete surfaces during operation of the structures.
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 7, pp. 36–38, July, 1971. 相似文献
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V. M. Vlasov V. I. Veretyushkin A. P. Nikolaev A. S. Moiseenko L. M. Deryugin V. L. Pavlov V. N. Sugachenko L. S. Permyakova 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1989,23(4):225-233
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 4, pp. 48–53, April, 1989. 相似文献