摘要
本文在分析总结西安地裂缝基本特征的基础上，采用二维有限元法，对西安地裂缝进行了数值模拟。结果给出，西安地裂缝从空间分布上虽受地形地貌和断裂构造局部地段的准静态控制，但其形成发展和剧烈活动与西安市区强采地下水而引起的地面不均匀沉降直接有关。故可认为，西安市区只有通过对地下承压水的合理均衡开采，控制西安市区地面的不均匀沉降。
In this paper,based on the analysis of basic features of ground fissures in Xi'an,the numerical simulation of ground fissures in Xi'an is made by using two dimensional finite element method.The results show that although the spatial distribution of ground fissures in Xi'an is para statically controlled by topographic expression and the local faults,the inhomogeneous ground subsidence induced by over extraction of confined groundwater is the primary cause of ground fissures in the Xi'an city.So,extraction of confined groundwater in a reasonable way to control the inhomogeneous ground subsidence is a fundamental way for reduction or basic control of the activity of ground fissures in Xi'an.
出处
《水文地质工程地质》
CAS
CSCD
1999年第5期33-36,共4页
Hydrogeology & Engineering Geology
基金
陕西省科学技术委员会资助
关键词
数值模拟
地裂缝
形成机制
西安市
numerical simulation, ground fissures in Xi'an, forming mechanism
