摘要
主动柔性防护系统以其轻便稳定等优点而被越来越多地应用于边坡浅层防护,现阶段针对某一具体的边坡防护工程,其防护体系的设计多根据设计者的经验确定,对柔性防护的边坡稳定性缺乏定量评价标准。基于主动防护体系的系统构件分析,提出柔性防护边坡块体安全系数的计算方法。在实际计算中,首先根据现场可移动块体的发育特点,验算柔性防护系统所能防护的最大块体体积,然后通过最大可能防护块体与实际块体的比较,评价防护边坡的稳定性。
The flexible protection system has been widely used in slope protection against geological hazards. However, the design of this system is mainly preformed based on the experience of engineers. Few methods can be used to evaluate the slope stability. A new method for evaluating the stability of the slope protected by flexible active protection system is put forward. First, the strengthened force of unit steel wire net can be obtained by analyzing the steel wire material. Secondly, the boundary of the maximal potential fail rock block can be determined by field investigation, and the safety factor of the rock block can be calculated through the formulae deduced from the classical wedge theory. In practical calculation, the designer can define the design safety factor beforehand, and the volume of the maximal rock block protected by the flexible system can be obtained based on field investigation. The comparison between the maximal volume and the field rock blocks is made. If the maximal volume is larger than all the field rock blocks, the stability of the slope is acceptable. Otherwise, the slope must be reinforced.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第2期294-298,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
边坡工程
柔性防护
稳定性分析
安全系数
slope engineering
flexible protection system
stability analysis
safety factor
