关于龙滩水电站碾压混凝土坝的抗剪断强度问题

本文就龙滩水电站碾压混凝土坝的抗剪断强度进行了叙述，认为所提出各项指标是合理的，但要满足这些指标必须采取一定的措施，以确保大坝的安全度     

实行全面质量管理 做好江口水电站工程设计

江口水电站是芙蓉江干流开发中的骨干工程。为认真履行江口工程的设计合同，确保优质、高效地完成江口工程的各项设计工作，长江委设计院实行全面质量管理，建立了一套规范化的统计管理程序，制订详细的设计计划，落实江口工程项目各级责任人的质量责任制，采取特殊技术措施，对工程设计过程中的各项质量活动进行全过程的管理，使江口工程在满足质量标准、合同进度的情况下，工程投资最省。     

城市加油站的防火与消防管理

介绍汽车加油站在防火设计与消防管理方面需注意的问题，主要包括站址选择、总平面布置、油罐设置、管线布置、卸油方式等方面，同时对加油站的日常操作与防火消防管理提出了要求。     

浅谈抽水蓄能电站的特点及其优越性

本文介绍了国外抽水蓄能电站的发展过程与现状，修建抽水蓄能电站的八大优点。为了改善我省电力系统的运行条件，提出了在我省修建抽水蓄能电站的四点建议。     

油气集输管道最佳敷设方式的分析

根据大庆油田油气集输工艺设计的实践，分析了几种实用的油气集输管道敷设方式的优缺点。在对不同敷设方式的管道热耗做了较详细计算的基础上，进行了比较，提出了确定油气集输管道的最佳敷设方式：站外管道基本上采用埋地敷设；站内管道则应依据站址处的常年最高地下水位资料来确定，即在保证管道不长期受地下水浸泡的前提下，站内室外管道以埋地敷设为主，室内管道以架空与理地同时敷设为最佳；地下水位高的站内，以架空敷设最佳。     

井站安全培训之问题与对策

目前采气井站的安全教育培训工作取得了一定成绩,但也存在不少问题。针对这些问题,提出了3点对策建议:制定长期系统的安全培训计划;建立教育培训信息反馈机制;培训方法不断改进与创新。     

Sediment chemistry and nutrient influx in a hydrologically restored bottomland hardwood forest in Midwestern USA

Exchanges of total N and C between a river and its floodplain forest have been enhanced by sedimentation processes during flood pulses at a 5‐ha bottomland hardwood forest located at the Olentangy River Wetland Research Park in central Ohio. In the spring of 2000, the forest was hydrologically restored by notching an artificial levee that had separated the Olentangy River and its floodplain forest for 100 years. One‐hundred flat sediment traps (30 cm × 30 cm) were used to collect sediment samples during spring/summer flooding events from 2003 to 2005. Results showed that sediment deposition is determined by the landscape variability during flooding events, Net sediment deposit in the wettest area averaged 134 ± 12 g‐dry wt m^?2 in 2003, 127 ± 17 g‐dry wt m^?2 in 2004 and 149 ± 23 g‐dry wt m^?2 in 2005. Total N and C sedimentation ranged from 0.49 to 0.92 g‐N m^?2 and 5.2 to 19.9 g‐C m^?2. Fe dominates the sediment chemistry and results show the elemental abundance in the order of Al > Fe > Ca > K > Mg > S > P > Na > Mn > Zn > B > Cu > Mo. A hydrologic pulsing index (HPI) could be used as an indicator for mass changes of energies with hydrologic pulsing events. Restoration of seasonally flooded bottomland forests could stimulate potentially large nutrient and Fe releases, which would eventually lead to an enhanced forest productivity and biodiversity. Copyright © 2007 John Wiley & Sons, Ltd.     

莲花水电站外部变形自动监测系统改造

介绍莲花水电站大坝面板及溢洪道外部变形自动化监测系统设计、测量精度分析及运行情况.     

Application of Code Approach for Emergency Evacuation in a Rail Station

This paper presents an emergency evacuation analysis during a mid-platform train fire in an underground rail station. A time-based evacuation scenario is developed taking into account the stairway inaccessibility due to smoke blockage. The calculation approach in NFPA 130 is then applied to a parametric study of this time-based scenario and its reliability is examined using a micro-simulation model. Both methods give consistent predictions of the exiting times. The results demonstrate that with the division of the station into two zones, the exiting time could not meet the code requirements, whereas it does meet the required exiting time without the division. Such division is due to smoke blockage and creates an uneven ratio of the occupant load to the available exiting capacity. This shows that appropriate consideration of the fire and smoke effects is important for station egress evaluation. Other issues such as the fire growth rate and the pre-evacuation time are also discussed.     

天楼地枕水电站的综合自动化改造

天楼地枕水电公司为实现水电站"无人值班,少人值守"的目标,对水电站进行了综合自动化改造,论述了该自动化系统的结构特点及实施情况.