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1.
鄂西种秭归盆地是长江三峡地区重要的构造单元之一,盆地东侧水田坝断裂与其南部龙王冲断裂、北部新华断裂,经分析不属同一基底构造体系。尽管各断裂近期活动不甚明显,按活动断裂评价标准,均不属工程活动断裂,但不能排除发生中强地震的危险性。用经验公式法估算的最大构造地辱震级,水田坝断裂为5.5级、龙王冲断裂为6.0级、新会断裂为6.5级。  相似文献   
2.
汶川地震对碧口、麒麟寺及苗家坝水电站均造成了不同程度的损伤.对震损部位修复工作的组织设计和实施效果进行评价探讨,为类似工程的修复提供参考.  相似文献   
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汶川地震灾区城市供水的水质风险和应急处理技术与工艺   总被引:2,自引:0,他引:2  
对汶川大地震后震区饮用水水源存在的次生污染风险进行分析,其中微生物浓度升高是首要风险,同时还存在大量使用消杀剂引起的杀虫剂污染和水源臭味增强的风险。针对这些风险,开展了一系列应急处理技术的验证性试验,提出了保障性应急处理工艺、强化吸附应急处理工艺和强化氧化应急处理工艺三种方案,以应对可能出现的震后次生水源污染,确保城市饮用水水质安全。  相似文献   
5.
针对城市给水管线不同管段在灾后对于管网整体可靠度影响的差异性,为了能够较好地评价不同管段对管网系统连接可靠度的贡献,引入失效概率重要度和关键重要度,建立了基于历史经验方法的管网可靠度及管线失效概率重要度、关键重要度计算模型。实例计算结果表明,该模型计算的管网连接可靠度结果与其他文献方法的计算结果基本一致,验证了模型的合理性、有效性。进而应用该模型计算出各段管线的失效概率重要度、关键重要度,对管线防灾等级划分,给出了管网分割方法与管网震后恢复策略。研究结果为编制给水管网抗震防灾规划、震后管网恢复计划及制定出相应的抗灾应急措施提供依据。  相似文献   
6.
汶川大地震影响范围广泛,陕西省宝鸡市也遭受严重震害。根据对宝鸡市受灾现场的调查,介绍了学校、农村住宅、工业厂房、商业建筑以及水塔等不同建筑在本次大地震中遭受震害的情况,并对其破坏原因作了初步分析。  相似文献   
7.
    
Enhancing the earthquake behavioral responses and post-earthquake evacuation preparedness of building occupants is beneficial to increasing their chances of survival and reducing casualties after the mainshock of an earthquake. Traditionally, training approaches such as seminars, posters, videos or drills are applied to enhance preparedness. However, they are not highly engaging and have limited sensory capabilities to mimic life-threatening scenarios for the purpose of training potential participants. Immersive Virtual Reality (IVR) and Serious Games (SG) as innovative digital technologies can be used to create training tools to overcome these limitations. In this study, we propose an IVR SG-based training system to improve earthquake behavioral responses and post-earthquake evacuation preparedness. Auckland City Hospital was chosen as a case study to test our IVR SG training system. A set of training objectives based on best evacuation practice has been identified and embedded into several training scenarios of the IVR SG. Hospital staff (healthcare and administrative professionals) and visitors were recruited as participants to be exposed to these training scenarios. Participants’ preparedness has been measured along two dimensions: 1) Knowledge about best evacuation practice; 2) Self-efficacy in dealing with earthquake emergencies. Assessment results showed that there was a significant knowledge and self-efficacy increase after the training. In addition, participants acknowledged that it was easy, helpful, and engaging to learn best evacuation practice knowledge through the IVR SG training system.  相似文献   
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Hybrid design of 18-story “Tall Wood Building“ in Vancouver and alternative in wood The first part of this paper discusses the design of one of the world's tallest hybrid wood buildings: the “Tall Wood Building“, a 18-story, 53 m tall student residence on the campus of the University of British Columbia in Vancouver, Canada. The building consists of 17 floors in solid wood construction on one floor in reinforced concrete. Two vertical concrete cores provide the required lateral load resisting system. The timber construction system consists of cross laminated timber, point supported on glulam beams. While the construction of the concrete cores lasted 14 weeks, the entire solid wood structure took only ten weeks to complete. Substantial shortening of the project duration and reduction of the ecological footprint of the building could have been achieved, if wood had been used for the cores. In the second part of this work, we examine the possibility of designing the building with solid wood cores. The results of a validated numerical model show that the criteria for earthquake and wind design of the current Canadian building standards can be met.  相似文献   
9.
In this work the liquefaction cycle is introduced as a framework to describe the coupled processes that take place in fluid-saturated granular media that lead to liquefaction. The modular formulation of liquefaction makes it possible to test the various processes that contribute to liquefaction separately, and to assemble different formulations of the relevant physics into a numerical model for liquefaction. This view on liquefaction is used here to assess the role of drainage in liquefaction. We present a simple scale analysis of the role of drainage. A numerical implementation of the liquefaction cycle shows, however, that the scale analysis is deceptive for the case when strong spatial variations in the permeability inhibit fluid migration. As an illustration the numerical model is used to quantify the imprint of a low-permeability layer on the liquefaction behavior.We greatly appreciate our conversations with Masami Nakagawa and Vaughan Griffiths about this work. The critical and constructive comments of two anonymous reviewers are very much appreciated. The visit of Annemieke van den Beukel to Golden was supported by the Molengraaff fonds, the Schuurman Schimmel van Outeren Stichting, the Stichting Dr. Hendrik Mullers Vaderlandsch Fonds, and the Trajectum Fonds.  相似文献   
10.
安县晓坝镇处于"5.12"汶川大地震极重灾区,受灾严重,不具备重建条件,需选址重建。在野外详细调查的基础上,通过现场勘查和室内试验,深入研究了晓坝镇灾后新建场址的主要岩土工程问题。研究表明,新建场址主要土层为粉质粘土和淤泥质土,属高压缩性软弱土;地下水埋深浅,对基础施工和地基土承载力影响大;建筑场地类别Ⅱ类,属抗震不利地段。提出了深层水泥土搅拌法和换填地基两种软基处理方案,以及加强地基基础抗震设计等措施。  相似文献   
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