Study on Ground Fissures and Land Subsidence Induced by Seepage Deformation in Xi'an

• 作者: Dong Yin Tao Hong Xu Chaomei Zhang Hexin Zhang Jianjun Zhang Maosheng
• 来源期刊: 气象与环境研究:英文版
• 学科: 地球科学
• 关键词: SEEPAGE deformation Land SUBSIDENCE Ground FISSURES Xi'an Composite AQUIFER
• 年，卷（期）: 2018,（6）
• 页码范围: 53-61
• 页数: 9页
• 分类号: P

摘要

There are lots of theories about the causation of ground fissures in Xi’an,such as the tectonics theory,the excessive groundwater exploitation theory and the compositive theory. Based on the construction of the geologic environment monitoring network in Guanzhong urban agglomeration,the latest survey of ground fissures and land subsidence in Yuhuazhai in Xi’an shows that the extensive piping and quicksand in self-supply wells is a factor to induce ground fissures and land subsidence. It is suggested that the seepage deformation caused by high hydraulic gradient leads to sand gushing and changes some aquifers into the composite aquifer,which is the main factor to induce ground fissures and land subsidence. The development characteristics of ground fissures and land subsidence caused by seepage deformation were summarized. The results will supply new schemes and methods for the causation of land subsidence and ground fissures in Xi’an and lay out a clear road map of measures to control land subsidence and ground fissures.