试论滑坡基本地质模型   总被引：17，自引：7，他引：10  

晏鄂川  刘广润 《工程地质学报》2004,12(1):21-24

滑坡基本地质模型是工程地质学研究的一个基础理论问题。本文在综合滑坡分类体系基础上 ,从滑坡活动各要素的地位与作用出发 ,遴选最能表征其活动特点的主要因素 ,作为建模的基本要素 ,形成滑坡基本地质模型体系。随着勘探阶段的不同 ,针对不同的应用目的 ,可以建立滑坡具体地质模型体系。  相似文献   

全球海啸灾害事件统计及预警系统简述     

侯京明  李涛  范婷婷  闪迪 《海洋预报》2013,30(4):87-92

统计分析了全球历史海啸灾害数据,结合相关海啸研究成果,给出了全球海啸的分布特点及历史重大事件,并介绍了全球海啸预警系统、数值技术以及海啸监测等防灾情况。  相似文献   

香港工程边坡防治进展概述     

孙萍  吴树仁 《地质力学学报》2014,20(3):243-253

受特殊的丘陵地形、强风化岩石以及季节性强降雨的影响, 香港滑坡时有发生。根据香港土木工程拓展署(CEDD)土力工程处(Geotechnical Engineering Office, GEO)的相关资料, 梳理了香港工程边坡防治进展的历史进程和关键防治技术, 对我国大陆相关工程边坡防治具有一定的参考价值。   相似文献   

《防灾减灾工程学报》稿源多元化实践与思考     

安珍  赵霞  苏泽云 《山西地震》2014,(4):22-24

从办刊宗旨的演变过程、发表论文专业结构调整、对自由投稿的发掘引导、专刊约稿的组织出版、学术会议的推动促进等方面,探讨了《防灾减灾工程学报》在拓展稿源渠道方面的实践,并提出了改进措施。  相似文献   

地震重点监视防御区制度实施现状调查(山东市级)     

李波  晁洪太  王伟  冯恩国  田丹 《中国地震》2014,30(3):363-372

以山东省市级防震减灾工作为研究对象,在全国范围内组织开展了两次(2007年、2012年)地震重点监视防御区制度实施情况问卷调查,根据回收的问卷从市级防震减灾组织机构、经费投入、监测预报、震害防御、应急救援和宣传教育等6个方面14项指标人手,对比地震重点监视防御区和非地震重点监视防御区防震减灾工作在两个调查年度的发展、变化,分析研究地震重点监视防御区制度在山东省(市级)的实施现状和成效.将两个调查年度描述山东省防震减灾工作进展的主要指标与全国相应指标的均值进行了对比研究.并对防震减灾工作的“山东现象”进行了分析.  相似文献   

地震重点监视防御区政府职能履行现状研究     

李健  续新民  林碧苍  石玉瑜  陈明金  刘强 《中国地震》2014,30(3):330-340

地震灾害是中国社会稳定和经济发展的重大风险源,而地震风险控制是社会多元主体参与的复合型风险治理模式.本课题以风险理论为基础,在调查问卷、访谈、座谈、考察调研和现行文献研究的基础上,通过对地震重点监视防御区政府职能履行现状的研究,分析影响地震重点监视防御区制度实施的各种因素,进而提出加强地震重点监视防御区中央和地方政府社会管理和公共服务职能的政策性措施与建议,旨在完善地震重点监视防御区地震风险管理制度,形成政府社会共同应对地震社会风险,降低社会易损性,从而达到控制地震社会风险的目的.  相似文献   

Experimental study of debris flow caused by domino failures of landslide dams   总被引：1，自引：0，他引：1  

Hua-Yong CHEN  Peng CUI  Gordon G.D.ZHOU  Xing-Hua ZHU  Jin-Bo TANG 《国际泥沙研究》2014,29(3):414-422

The formation of landslide dams is often induced by earthquakes in mountainous areas.The failure of a landslide dam typically results in catastrophic flash floods or debris flows downstream.Significant attention has been given to the processes and mechanisms involved in the failure of individual landslide dams.However,the processes leading to domino failures of multiple landslide dams remain unclear.In this study,experimental tests were carried out to investigate the domino failure of landslide dams and the consequent enlargement of downstream debris flows.Different blockage conditions were considered,including complete blockage,partial blockage and erodible bed（no blockage）.The mean velocity of the flow front was estimated by videos.Total stress transducers（TSTs）and Laser range finders（LRFs） were employed to measure the total stress and the depth of the flow front,respectively.Under a complete blockage pattern,a portion of the debris flow was trapped in front of each retained landslide dam before the latter collapsed completely.This was accompanied by a dramatic decrease in the mean velocity of the flow front.Conversely,under both partial blockage and erodible bed conditions,the mean velocity of the flow front increased gradually downward along the sloping channel.Domino failures of the landslide dams were triggered when a series of dams（complete blockage and partial blockage） were distributed along the flume.However,not all of these domino failures led to enlarged debris flows.The modes of dam failures have significant impacts on the enlargement of debris flows.Therefore,further research is necessary to understand the mechanisms of domino failures of landslide dams and their effects on the enlargement of debris flows.  相似文献   

Modeling study of regional severe hazes over mid-eastern China in January 2013 and its implications on pollution prevention and control   总被引：9，自引：0，他引：9  

WANG ZiFa  LI Jie  WANG Zhe  YANG WenYi  TANG Xiao  GE BaoZhu  YAN PinZhong  ZHU LiLi  CHEN XueShun  CHEN HuanSheng  WAND Wei  LI JianJun  LIU Bing  WANG XiaoYan  WAND Wei  ZHAO YiLin  LU Ning  SU DeBin 《中国科学:地球科学(英文版)》2014,57(1):3-13

The Nested Air Quality Prediction Model System(NAQPMS)was used to investigate the temporal and spatial variations of PM2.5over tropospheric central eastern China in January 2013.The impact of regional transport and its implications on pollution prevention and control were also examined.Comparison between simulated and observed PM2.5showed NAQPMS was able to reproduce the evolution of PM2.5during heavy haze episodes.The results indicated that regional transport of PM2.5played an important role in regional haze episodes in the city cluster including Hebei,Beijing and Tianjin(HBT).The cross-city clusters transport outside HBT and transport among cities inside HBT contributed 20%–35%and 26%–35%of PM2.5as compared with local emission,in HBT respectively.To meet the Air Quality Standards for Grade II,90%,90%and65%of emissions would have to be cut down in Hebei,Tianjin and Beijing,if non-control strategy was taken in the surrounding city clusters of HBT.This implicated that control of emissions in one city cluster is not sufficient to reduce regional haze events,and joint efforts among city clusters are essential.Besides regional transports,two-way feedback between boundary-layer evolution and PM2.5also significantly contributed to the formation of heavy hazes,which contributed 30%of monthly average PM2.5concentration in HBT.  相似文献   

防雷工作中几个疑难和易误技术问题的处理     

陈勇斌  曹和生  蒋焕宇 《气象》2009,35(8):109-111

针对加油站罩棚的防雷争议、两级SPD的安装间距、接地引下线尽可能短及接地电阻异常等问题,文章提出了探索处理以上防雷疑难及易误技术问题的方案.  相似文献   

黔南暴雨洪涝灾害情势及防御   总被引：3，自引：0，他引：3  

石昌军 《贵州气象》2010,34(4):6-10

根据黔南州1983—2007年共25 a的暴雨洪涝灾害资料及降水资料,对黔南州洪涝灾害的基本特征和主要特点进行分析、总结,并结合该州气候变化趋势及人文地理、经济社会发展等情况进行研究,结果表明:5—8月是该州暴雨洪涝灾害的多发季节,尤以6月最多,7月次之;州的南部和中部地区洪涝灾害要重于北部地区,而且随着经济的发展,暴雨洪涝灾害所造成的损失越来越大,全州防御暴雨洪涝灾害面临的形势更加严峻。同时,根据防灾减灾面临的形势提出一些防御措施。  相似文献