接入大感性施工负荷的核电厂独立厂用电系统可靠性分析

根据业主提出的由一期工程厂用电系统供电二期工程施工负荷的改接方案,从设计规定符合性,不同母线段接入方案比选,采用隔离变压器合理性,以及对厂用电系统的暂态稳定、电能质量、继电保护等方面的影响进行了可靠性分析,认为核电厂的厂用电系统不宜带载施工负荷。

基于施工环境负荷的施工环境因素的识别与控制

为了减少施工阶段环境污染，推行绿色施工，本文提出了施工环境负荷来量化和比较施工操作对环境的影响程度，从而识别施工阶段的重要环境因素并对重要环境因素制定了相应的控制对策。

基于施工环境负荷的施工环境因素的识别与控制

为了减少施工阶段环境污染,推行绿色施工,提出了施工环境负荷来量化和比较施工操作对环境的影响程度,从而识别施工阶段的重要环境因素并对重要环境因素制定了相应的控制对策。

扎拉、轰东梯级电站施工供电方案探讨

本文通过对怒江支流玉曲河梯级扎拉、轰东电站施工供电规划方案的探讨,研究提出了扎拉、轰东电站施工供电电源接入点和梯级电站施工供电方案,并对施工供电规划方案与电网现状及电网规划的结合作了简要论述,对类似工程的施工供电设计具有一定的参考和借鉴意义。

新建铁路施工用电设施转为铁路永久使用的探讨

随着时代的发展,修建铁路的机械化程度逐步提高,施工用电负荷也随之增大,而且大型的新工程机械在使用时,对供电质量要求也越来越高,因此,新的铁路建设项目上马后,必须获得可靠的施工电源,所以需兴建工地变电站和输配电线路,来为施工生产服务,才能保证工程进度和质量。近年来我国新建铁路站前工程施工周期一般在3～5年,施工用电完成后,大部分施工电源和输配电设施却不再利用而遭废弃。

Impact of Grouting and Loading of Building Construction on the Water Level of Tangshan Mine Well

The water level rising rate of Tangshan mine well significantly accelerated in 2010,and the ascensional range was obviously higher than that of the same period in previous years.From the view of groundwater dynamics and loading effects,and based on the water pumping( pouring) water test model and semi-infinite elastic space theory model under uniform load,the effects of grouting and loading of nearby building construction on the well water level were analyzed. Results show that grouting at a distance of 200 ~ 700 m to the well,with amount of 2500m3 per day and duration of 270 d,can cause an 8 ~ 11 m rise of well water level; and loading of large-area building construction can cause about a 4m rise of well water level. Through the analysis of these factors,we find that the water level anomalous rising of Tangshan mine well was relevant to grouting and loading of the nearby building construction. This study provides a scientific basis for anomalous rising analysis of water level of Tangshan mine well.