摘要
岩溶塌陷已成为北方危害严重的地质灾害.唐山市北部低山丘陵区近年来的岩溶塌陷呈逐年加剧趋势,给当地居民生活和生产带来威胁.本文以刘备寨村岩溶塌陷作为唐山市北部低山区岩溶塌陷特点的典型实例,在分析该村岩溶塌陷形成的地质、地形条件和岩溶塌陷空间分布的基础上,对岩溶塌陷的成因机理进行了探讨.结果表明,大强度开采岩溶地下水是本区岩溶塌陷的主要诱发因素,而在盖层厚度较薄的基岩与第四系交汇处,塌陷与降雨也有直接关系.针对本区塌陷灾害的分布规律,提出了本区岩溶塌陷的防治对策。
Karst collapse is one of the primary geological hazards in Northern China. The increasing geological hazards are endangering the local residents in the hilly area of northwestern Tangshan. The Karst collapse in Liubeizhai village is discussed as a typical example of hilly area. Based on the study of its geological condition, topography and distribution of the collapse, this paper has analyzed the mechanism of karst collapse. As a result, it is realized that over-pumping karst groundwater induces the karst collapse in the thick cover and rainwater seeping induces the collapse in the thin cover. The measures of preventing collapse are put forward according to the distribution regularity of the collapse.
出处
《工程勘察》
CSCD
北大核心
2008年第8期29-32,74,共5页
Geotechnical Investigation & Surveying
基金
河北省国土资源厅资助.
关键词
山区
岩溶塌陷
机制分析
防治措施
mountainous region
karst collapse
mechanism analysis
prevention measure
