摘要
探讨了垃圾填埋场在长期运行过程中,由于排水系统失效而导致封盖土坡在渗流作用下失稳的原因。采用极限平衡法,通过算例定量地分析封盖土坡在渗流作用下的稳定性,指出渗流使封盖系统界面摩擦角减小,所产生的渗透压力使滑动面摩擦力下降,导致封盖土坡稳定性不足。强调在垃圾填埋场设计中,必须高度重视渗流影响,保证封盖系统长期有效的设计排水能力。
Stability analysis is made with limit equilibrium method for the cover soil slope on waste landfill under seepage. The parameters of design are correctly taken into account and it is considered that seepage reduces the interface friction angle, and water pressure at interface decreases friction force. The analysis result keeps good agreement to practical case, and it is proposed to design an adequate drainage system to decrease the water pressure at the geosynthetic interface.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第11期1939-1943,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
水利部科技推广中心(00437201000081)资助项目。
