A Study of Full Coupling Numerical Simulation of Land Subsidence in the Ningbo Plain
详细信息
- 责任者：Zhang Honghuai (Ningbo Monitoring Station for Geological Environment ; Ningbo 315040 ; China) ; Zheng Xianxin
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2013
- 卷期：40(4)
- 关键词：地面沉降 ; land subsidence ; 浙江 ; Zhejiang Province
- 页码：p.77-82,87
- 图表：illus., 4 tables, 10 refs.
- 分类号：1800
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
Occurrence of land subsidence has undergone about half a century in the city of Ningbo.With the rapid urbanization and the consequent increasing dynamic and dead load,the cause of the land subsidence has gradually changed from unreasonable groundwater withdrawal to both massive engineering load and foundation pit draining.Since the forbidden draining of groundwater in urban area at the end of 2008,the land subsidence funnel has continued to expand slowly,the subsidence quantity at the land subsidence monitoring center has increased continuously,and many new small funnels have arisen.Based on the full demonstration of the functions and the characteristics of the land subsidence caused by the massive engineering load in theNingbo plain,the full coupling numerical model of the land subsidence resulting from groundwater withdrawal and massive engineering load is established by using the finite difference method in this article.The compared results show that the good fitting relationship between the actual observed value and the predicted value has been attained.Furthermore,the land subsidence development trend in the period of 2012-2015 has been forecast,which will be used as technical bases for land subsidence controlling,urbanization constructing,and marine economy development in the Ningbo plain.
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