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结合陈村大坝自动化监测系统建设实例,介绍了混凝土坝安全监测自动化系统土建工程的设计与施工方法,解决了现场设备防雷、防潮、防人为和动物破坏。通讯和电源传输等问题。 相似文献
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水电站大坝监测自动化系统设备运行状态的好坏,直接影响到获取数据的及时性、可靠性及对工程运行性态的评价。基于解决监测自动化系统故障诊断的科学性、设备维护消缺的时效性,以及整合资源减少人力投入、提高职工幸福指数等问题,开展了大坝监测设备状态监控的研究与实践,探索了设备状态监控对象、功能需求、故障评判预警方法,通过与监测自动化系统和信息管理系统的融合,做到设备维护消缺有的放矢,实现了由被动到主动、由定期到动态适时消缺的转变,为快速诊断与处理缺陷、保证监测设备的健康稳定运行、实现电站现场"无人值班、少人值守,甚至无人值守"打下坚实基础,对流域公司或大中型水电站大坝监测管理具有重要意义,也为今后新建工程开展大坝监测自动化系统设计与建设提供了新思路。 相似文献
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文章结合建筑施工设备防碰撞预警的现实需要,以施工设备的定位、数据的采集及施工设备的运动预判为基础,对施工设备预警程序的开发做了一定的研究. 相似文献
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针对西南岩溶山区滑坡监测数据量大、类型多、来源杂、集成与分析难等问题,基于Hadoop进行数据的存储与计算,并应用WebGIS等关键核心技术,设计并初步实现了适用于岩溶山区滑坡监测预警的云平台原型系统。首先,设计了多元监测数据集成管理的普适性云平台系统架构;其次,依托校园大数据平台、采用网络开发技术,搭建了应用型云平台;最后,基于原型平台实现并验证了岩溶山区滑坡监测预警云平台的基本功能模块。平台原型及其试验结果表明:岩溶滑坡监测预警云平台的构建设想与技术路线合理、可行,是探索岩溶山区滑坡信息化并进行岩溶滑坡地质灾害监测预警的有效手段和平台支撑。 相似文献
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雅砻江流域大坝安全信息管理系统是雅砻江流域水电开发有限公司(简称"雅砻江公司")建设的流域化大坝安全管理的专业技术平台,主要对雅砻江流域各个水电工程的大坝安全监测、巡视检查、定检等信息进行集中管理。依托系统信息平台,以自动化系统运行、人工监测工作开展、数据审核、水工巡视检查等日常水工管理工作内容为基础,制定自动化监测数据完整率、人工监测数据完整率、有效数据检查率、监测自动化系统运行率、巡视检查完成率、有效巡检审核率等6项指标,通过定期统计分析,进一步规范了现场安全监测工作开展情况,提升了公司大坝安全监管工作水平,具有一定参考意义。 相似文献
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《水电站机电技术》2019,(12)
针对水电企业生产系统数据分散,相互之间信息屏蔽隔绝,容易形成"数据孤岛",且不支持海量数据计算挖掘,不易发挥数据综合效益等问题,研制了基于大数据技术的水电生产智能决策支持系统,设计了系统的整体框架,构建了适应于水电生产的通用性数据模型体系,综合应用Hadoop架构与实时数据库系统实现以"水电生产"为核心的数据高度融合以及统一,在此基础上,面向不同层面、不同岗位、不同业务的需求,设计了设备运行状态分析、设备故障诊断,设备智能报警和异常预警等智能应用,以水电站集水井泵类设备为例,阐述了设备智能报警模型的构建方法,目前,基于大数据技术的水电智能决策支持系统已完成数据集成、平台部署与部分应用开发,能为决策层、管理层、执行层、操作层提供辅助决策支撑,应用效果良好。 相似文献
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根据冗各电站地下厂房开挖支护的施工顺序,以隐式杆单元模拟锚杆,以壳单元模拟混凝土喷层,采用三维非线性有限元技术,对洞室群的开挖支护动态过程进行了模拟计算。通过三维非线性有限元计算分析得到:洞室群动态开挖过程中围岩应力变形的分布规律,围岩塑性区的发展规律,锚杆受力变化情况。计算结果表明:整个开挖过程中,洞周围岩位移变化规律正常,量值较小,塑性区主要分布在洞室周边,围岩稳定性较好;但在洞室交叉口处围岩的变形较大,出现较大范围的塑性区,在此基础上提出了支护措施优化方案,并对优化方案的效果进行了评价。 相似文献
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The relocation of unionacean mussels is commonly used as a conservation and management tool in large rivers and streams. Relocation has been used to recolonize areas where mussel populations have been eliminated by prior pollution events, to remove mussels from construction zones and to re-establish populations of endangered species. More recently, relocation has been used to protect native freshwater mussels from colonization by the exotic zebra mussel Dreissena polymorpha. We conducted a literature review of mussel relocations and evaluated their relative success as a conservation and management strategy. We found that 43% of all relocations were conducted because of construction projects that were forced to comply with the Endangered Species Act 1973 and that only 16% were monitored for five or more consecutive years. Most (43%) relocation projects were conducted from July to September, presumably a period when reproductive stress is relatively low for most species and the metabolic rate is sufficient for reburrowing in the substrate. The mortality of relocated mussels was unreported in 27% of projects; reported mortality varied widely among projects and species and was difficult to assess. The mean mortality of relocated mussels was 49% based on an average recovery rate of 43%. There is little guidance on the methods for relocation or for monitoring the subsequent long-term status of relocated mussels. Based on this evaluation, research is needed to develop criteria for selecting a suitable relocation site and to establish appropriate methods and guidelines for conducting relocation projects. 相似文献
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In the lower River Murray, Australia, populations of gastropods have declined markedly over the past 40 years. Of the native fauna of about 18 species, only the ancylid Ferrissia petterdi remains common (but in patches), and another five species feature in sporadic local resurgences. Until recently the viviparid Notopala was thought to be extinct. The introduced physid Physa acuta is widespread, but in low numbers. The decline probably is associated with flow regulation, high turbidity and the introduction of common carp. Snail populations have persisted, however, in irrigation pipelines fed from the river, where they periodically cause blockages. This paper reports the discovery of the only known populaion of Notopala hanleyi in a pipeline where the inner wall accumulates microbial and other organic matter, providing high quality food for snails. In the Murray before regulation most of the periphytic biomass was probably microbial, as fluctuating water levels would have maintained littoral communities in a highly productive, early state of succession his postulated that, by stabilizing seasonal water levels, regulation has promoted the production of filamentous green algae, an inferior food source, and so displaced snail populations from the open aquatic environment. 相似文献
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V. K. Konovalov O. V. Yashkin V. V. Ermakov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2008,42(2):105-109
A system for removal and pneumatic transport of fly ash is examined, in which air pulses act on batches (pistons) of ash formed
in a duct. Studies are made of the effect of several physical parameters on the force required to displace a piston of ash
and these serve as a basis for choosing a system for removal and pneumatic transport of ash simultaneously from several hoppers
of an electric precipitator. This makes it possible to separate the ash particles according to size without introducing additional
components. Formulas are given for calculating the structural and dynamic parameters of this system and measurements of indirect
dynamic parameters are used to calculate the input-output characteristics of the system. In order to optimize the system,
configurations for summing several ducts into a single transport duct for pneumatic ash transport are proposed. Some variants
of dry ash utilization and the advantages of producing of size-separated particles are considered.
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Translated from élektricheskie Stantsii, No. 2, pp. 26–30 (2008). 相似文献
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Peter B. Bayley 《河流研究与利用》1991,6(2):75-86
The ‘flood pulse advantage’ is the amount by which fish yield per unit mean water area is increased by a natural, predictable flood pulse. Evidence for this increase is presented from tropical and temperate fisheries. It is argued that increasing multispecies fish yield by restoring the natural hydrological regime is consistent with increasing production of other trophic levels and with restoration from ecological and aesthetic viewpoints. When applied to a river-floodplain system, this restoration would provide a large, self-sustaining potential for recreation, commercial exploitation, and flood control. An interim ‘natural flood pulse’ restoration approach is proposed for systems modified for navigation. This approach approximates the natural hydrological regime in a river reach and is intended as a first step in the long process of restoring the watershed. 相似文献
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简述天湖水电站投运以来各种故障的表现形式,分析其原因,提出了相应的处理方法及措施,并对合理利用国内外设备提出建议。 相似文献