摘要
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 self-organized process of slope development is discussed by the analysis of the characteristics of the whole process of slope development. Results show that the process of slope development can be considered as an extensively dissipative dynamical complex system varying in time and space and has mass, energy, and information exchanges with external environment. The process of slope development represents a self-organized criticality（SOC） phenomenon far away from the equilibrium state. SOC is a dynamical attractor in the process of slope development and provides an evidence for minus power law between frequency of slope action and its strength. Based on this understanding, an analysis model for the reliability of slope safeguard system is constructed and the reliability of rockfall protecting nets in the railway section between Jinyun and Qingtian is analyzed by taking the slope rockfall as an example.
出处
《水土保持通报》
CSCD
北大核心
2008年第1期90-94,共5页
Bulletin of Soil and Water Conservation
基金
国家自然科学资助项目(50478085)
关键词
斜坡演化
自组织临界性
干涉模型
可靠度
slope development
self-organized criticality（SOC）
interference model
reliability
