Warning System for Rain-Induced Landslides Based on Internet in Zhejiang Province, China
-
摘要: 滑坡发生的最主要诱发因素是降雨.基于浙江省淳安、磐安、庆元和永嘉4个县的历史滑坡资料, 在研究降雨量、降雨强度和降雨过程与滑坡灾害的空间分布、时间上的对应关系, 建立起滑坡灾害时空分布与降雨过程的统计关系, 确定区域性滑坡的临界降雨量和降雨强度阀值的基础上, 开发出了降雨型滑坡预警预报系统, 其中采用临界降雨量模型和有效降雨量模型来进行预警预报.系统留给浙江省气象台一个传送数据的接口, 气象台将每天按时上传降雨数据, 数据保存在后台数据库MicrosoftSQLServer中.建成的系统能够自动获取数据库中的数据生成时间与降雨量实时曲线, 当降雨量达到降雨强度阀值时, 触发MAPGIS图件, 在Internet上发布区域预警预报信息, 并提供预警措施.Abstract: One of the main factors attributed to landslide causation is rainfall. On the basis of historic landslide information from Chun'an, Pan'an, Qingyuan and Yongjia, in east China's Zhejiang Province, this paper studies the relationship between rainfall, rain intensity, rain process, and the spatial distribution and time effects of landslides. Statistical connections between time, spatial distribution and precipitation are set up, and the critical rainfall and the threshold values of rain intensity are presented. Based on these, a warning system for rain-induced landslides is developed. In the system, the critical rainfall model and effective rainfall model were adopted for prediction, and an interface was provided for the Zhejiang Province observatory. The rain data will be uploaded to the server using this interface, and saved in a Microsoft SQL Server database. The data can be obtained automatically from the database to build a real-time curve between time and rainfall. When the rain intensity reaches the rainfall threshold values, a geo-hazards map will be triggered, prediction information will be released, and preventative measures will be provided via the Internet.
-
图 1 有效降雨量与滑坡点密度的关系曲线
Fig. 1. Curve of effective rainfall in non: typhoon zone and point density of landslides
图 3 浙江省连续降雨实测信息
（2003年06月27日08时到2003年06月28日08时日降雨量）
Fig. 3. Real information of continuous raining
图 5 地质灾害预警预报信息网上发布界面
Fig. 5. Releasing interface on internet about the geo-hazards warning information
表 1 滑坡灾害预警区等级划分
Table 1. Early warning grade
表 2 降雨量数据库
Table 2. rainfall database
-
Li, X.H., Lin, H., Chen, X.Q., et al., 2001. GIS aimed and numeric simulation of initiation mechanism of landslide due to precipitation. Journal of Engineering Geology, 9 (1): 133 -140(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-GCDZ200102005.htm Lin, X.S., 2001. The study of landslide related to rainfall. Journal of Geological Hazards and Environment Preservation, 18(4): 1 -7(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZHB200103000.htm Wang, S.F., Wang, Y.G., Hu, Z.Z., 2000. Actuality of hill sliding and its cause in mountainous region of Zhejiang Province. Journal of Mountain Science, 18(4): 373-376(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SDYA200004015.htm Xie, J.M., Liu, L.L., Yin, K.L., 2003. Study on threshold values of rainfall about landslide hazards for early-warning and prediction in Zhejiang Province. Geologic Science and Technology In formation, 22(4): 101 -105(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZKQ200304019.htm Zhang, H.L., 2002. A web based on real estate information releasing system. Engineering of Surveying and Maping, 11(1): 28 -31(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-CHGC200201006.htm 李先华, 林珲, 陈晓清, 等, 2001. GIS支持下降雨滑坡的启动机制研究与数字仿真. 工程地质学报, 9(1): 133 -140. https://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ200102005.htm 林孝松, 2001. 滑坡与降雨研究. 地质灾害与环境保护, 18 (4): 1 -7. https://www.cnki.com.cn/Article/CJFDTOTAL-DZHB200103000.htm 王深法, 王援高, 胡珍珍, 2000. 浙江山地滑坡现状及其成因. 山地学报, 18(4): 373 -376. doi: 10.3969/j.issn.1008-2786.2000.04.016 谢剑明, 刘礼领, 殷坤龙, 2003. 浙江省滑坡灾害预警预报的降雨阀值研究. 地质科技情报, 22(4): 101 -105. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ200304019.htm 张怀莉, 2002. 基于WEBGIS的房地产信息发布系统. 测绘工程, 11(1): 28 -31. https://www.cnki.com.cn/Article/CJFDTOTAL-CHGC200201006.htm -
下载:
点击查看大图
计量
- 文章访问数: 3971
- HTML全文浏览量: 504
- PDF下载量: 11
- 被引次数: 0
