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台风“云娜”与斜坡地质灾害时空关系特征分析

发表时间:2011-11-15  浏览量:1275  下载量:641
全部作者: 赵其华,韩俊,陈光平,薛源
作者单位: 成都理工大学地质灾害防治与地质环境保护国家重点实验室;成都理工大学环境与土木工程学院
摘 要: 基于地理信息系统(geographic information system, GIS)数据库平台,从时间和空间2个方面对0414号台风“云娜”和由它引发的斜坡地质灾害之间的关联性进行研究。在时间上,对灾害发生时间与台风登陆和离境时间、强风持续时间,以及强降雨持续时间进行对比分析,发现它们基本一致;在空间上,对灾害点发育分布进行统计对比分析,发现灾害点集中在温州北部的乐清市和永嘉县,这与台风的路径、10级风圈、强风分布范围相一致,并且与台风期间强降雨分布范围、暴雨中心位置相一致。研究表明:台风“云娜”的强风和强降雨与斜坡地质灾害的发生密切相关,在时间和空间上都保持着一致性,二者是诱发温州地区斜坡地质灾害的主导因素。该成果为进一步研究台风诱发斜坡地质灾害的预防、预测和评价等奠定了基础。
关 键 词: 地质工程;时空关系;地理信息系统;斜坡地质灾害
Title: Analysis of time and space relationship between typhoon‘Rananim’ and slope geological hazard
Author: ZHAO Qihua, HAN Jun, CHEN Guangping, XUE Yuan
Organization: State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology; College of Environment and Civil Engineering, Chengdu University of Technology
Abstract: Based on geographic information system (GIS), this paper is elaborated in time and space relevance, and it is mainly carried out according to two aspects, that are the typhoon NO. 0414 ‘Rananim’ and the slope geological hazard induced by it in Wenzhou. From the comparative analysis of time when the geological hazard happened, the typhoon landed and exited, and that of strong breeze and heavy rainfall lasted, it can be discovered that they are basically identical. Through the statistic and comparative analysis of the distribution of hazard points, it can be discovered that they center on Leqing and Yongjia in the north Wenzhou, which is identical with the path of typhoon, ten grade wind circle and the strong winds distribution. In addition, it is in line with the heavy rainfall distribution and center site of storm for the duration of typhoon as well. The research indicates that the strong breeze and heavy rainfall of ‘Rananim’ are the leading factors of the geological hazard, because they are closely related to the occurrence of the slope geological hazard, and they both keep identical in time and space. It lays the foundation for the further study of the prevention, prediction and evaluation of the slope geological hazard caused by typhoon.
Key words: geological engineering; time and space relationship; geographic information system; slope geological hazard
发表期数: 2011年11月第21期
引用格式: 赵其华,韩俊,陈光平,等. 台风“云娜”与斜坡地质灾害时空关系特征分析[J]. 中国科技论文在线精品论文,2011,4(21):1917-1923.
 
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