Dynamic Regularity and Prognoses of Landslide

Dynamic regularity is discussed tightly combining with method and principle of displacement monitoring for landslide . By the principle of dynamic energy analysis is performed emphatically for the broken - line condi on of sliding surface being always made of multiple combination of unit geostructural planes with different dip angles .Several formulae are derived from given conditions and , presented to describe the dynamic regularity . Based on the regularity an example of huge landslide is cited to calculate water urge height of reservoir . By Poisson cycle principle the latter was made for another large slide . The results showed themselves to have very approached vis-a-vis the actual ones .

穿越古滑坡的浅埋偏压连拱隧道动态施工响应规律

复杂地质条件下地下工程围岩稳定性问题,一直是地质工程界备受关注的热门议题。文中针对云南思茅-小勐养高速公路曼歇4号连拱隧道的特殊复杂地质结构,通过数值模拟对穿越古滑坡的浅埋偏压连拱隧道施工过程围岩应力场、位移场和塑性区变化规律进行了数值分析,从而有效揭示出施工各阶段围岩应力集中位置和潜在塑性破坏区,不仅为隧道的安全顺利施工提供了预警信息和直接指导,同时为连拱隧道的优化设计提供可靠的理论依据。在穿越古滑坡的浅埋偏压连拱隧道施工中,应高度重视古滑坡的彻底治理和中隔墙的支护加固,从而确保整座连拱隧道的围岩稳定和安全运营。

滑坡系统静动态规律及斜坡不稳定性空时定量预测

文章基于近数年来室内外测绘试验分析研究工作,论述了滑坡静、动态规律。针对其群体“静态” 规律,论证了斜坡不稳定性空间定量预测的某些基本原理方法;针对其群、单体动态规律讨论了滑坡灾害暴发时间的预测预报基础技术。从系统论观点出发,概括了滑坡系统空时定量预测的三类数学模型——确定性、随机性及灰色系统模型的基本分工和联合模式的勾通特点与功能。文章以陕西东南部变质岩滑坡和长江中上游中生界砂泥岩地层滑坡为实例,讨论了斜坡不稳定性空、时定量预测的重点研究成果。文末概括了几点重要结论。