摘要
2002年6月30日,福建省安溪县剑斗镇湖丘角落发生地面塌陷,造成房屋倒塌,人员伤亡。通过对该区环境地质条件和地面塌陷分布规律的分析与研究认为:塌陷区内岩溶裂隙发育是形成地面塌陷地质条件;矿井对地下水的疏干这是导致地面塌陷或不均匀沉降产生地裂缝的内在动力;深部及周围石灰岩矿的开采,为岩溶洞隙充填物提供了被搬运带走的空间,使得潜蚀作用可以不断地向上扩展;强降雨是加速岩溶区地面塌陷的外部动力。
A fatal surface subsidence was happened in Huqiujiaoluo Village, Jiandou Township, Anxi County, Fujian Province, June 30, 2002, which caused houses collapse and casualties. Through analysis and study on environmental geologic condition and surface subsidence distribution regularities, the authors are of the opinion that; the karst fissures in the region are geologic causality of surface subsidence; mine drainage is inherent dynamic force of surface subsidence and differential settlement, which causes ground fissures; deep part and peripheral limestone mining leaves space for fillers in karst caves and fissures that causes pipe erosion expanding upward ceaselessly; strong rainfall is external dynamic force to accelerate surface subsidence in karst region.
出处
《中国煤田地质》
2004年第2期30-33,共4页
Coal Geology of China
关键词
地质灾害
地面塌陷
成因分析
福建安溪县
geologic hazard
surface subsidence
genetic analysis
Anxi County,Fujian Province
