摘要
通过三维快速拉格朗日有限差分法分析了阳春市大河水库移民河西安置典型土洞的塑性区分布情况。数值分析结果表明研究区典型土洞覆盖层在自重作用下所引起的塑性区已发展至地面,因此存在较大的塌陷可能。作者以此为基础,通过数值分析的方法,研究了在自重及其与均布外载联合作用下土洞型岩溶塌陷区的高度与覆盖层抗剪强度之间的关系。
This paper analyzes the distribution of plastic zone of placing typical dust hole near the reservoir of Yangchun city using triaxiality rapid lagrange finite difference method. The results shows that the plastic zone caused by the empty weight will probable lead to sink. The author studies the relationship between shear strength of cover layer and the rock dissolve sink height under the combined action of empty weight and
出处
《林业科技情报》
2010年第1期102-104,共3页
Forestry Science and Technology Information
关键词
覆盖层
自重
均布外载
抗剪强度
土洞型岩溶
塌陷高度
数值分析
cover layer
empty weight
uniform distributed load
shear strength
soil cave karst
collapse height
numerical analysis
