摘要
采用极限平衡法推导了垃圾填埋场封盖土坡系统在渗流作用、地震作用下的安全系数计算公式,同时给出了屈服加速度的计算方法。不同参数下的封盖土坡系统的地震稳定性分析表明:浸润面高度显著影响封盖土坡系统的稳定性和屈服加速度。认为在填埋场设计中,必须高度重视渗流影响,以保证封盖土坡系统长期有效的设计排水能力。
The instability of soil slopes under earthquake load is often related to seepage and the seismic stability analysis of cover soil slopes subjected to seepage has attracted increasing attention in recent years.The procedure for calculating safety factor of cover soil slope with seepage under earthquake load was established in this paper by using the Limit Equilibrium Method（LEM）,and the method to calculate yield acceleration was induced.The seismic stability analysis of cover soil slope with different parameters shows that the height of the soakage plane has obvious affect the stability of the cover soil slope and the yield acceleration.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
《水利水电科技进展》
CSCD
北大核心
2010年第3期62-64,共3页
Advances in Science and Technology of Water Resources
