知识与财富的链接
在对斜坡演化全过程特点分析的基础上,讨论了斜坡演化的自组织过程.研究表明,斜坡演化过程是一类具有时间-空间变化的广延耗散动力学复杂系统,与外界环境存在着物质、能量和信息的交换,是一种远离平衡态的自组织临界现象.自组织临界性是斜坡动力学过程的吸引子,同时为斜坡作用强度与频度之间的负幂律特征提供了证据.在此基础上,以斜坡崩塌落石为例,建立了斜坡防护系统的可靠性分析模型,并对某铁路缙云至青田段危岩崩塌分布区内拦石网防护系统进行了可靠性分析.
The purpose of the study was to constructa system dynamics model of soil and water loss on slope surface on the basis of system dynamics principles through the analyses of soil and water loss processes and its influencing factors. Experimentwas conducted on three runoff plots ( natural slope,forbidden slope,and level-terrace) in Yuanmou County,Yunnan Province located in the dry-hotvalley of Jinsha River. Data observed form the runoff plots were inputto model and the VENPLE software was used to find the processes of runoff and soil loss. Data of runoff and soil loss obtained from the simulation model were then compared with observed data. Relative error was found to be between 6. 9% and 17%. This illustrates thatthe system dy namics model is an ideal model.
