摘要
运用GeoStudio软件建立模型,并采用Morgenstern-Price法对广东新丰抽水蓄能电站下水库进出水口边坡在开挖前后的不同工况稳定性进行计算分析。结果表明:开挖前该边坡处于稳定状态,开挖后边坡的稳定性在暴雨和地震工况下显著下降;当库水位骤升时,坡脚处的地下水受到的影响最大,水由库内向边坡入渗,增大了边坡的稳定性;水位下降时,增加了潜在滑体的下滑力,降低了边坡的稳定性;水位骤降是对该边坡稳定性影响的最大因素。另外,对边坡进行锚杆支护后,在最危险的水位骤降工况时边坡依然处于稳定状态,且安全裕度大。
The article uses GeoStudio software to establish a model and applies the Morgenstern-Price method to calculate and analyze the slope stability of the inlet and outlet slopes of the lower reservoir of the Xinfeng pumped storage power station in Guangdong under different conditions before and after excavation.The results indicate that prior to excavation,the slope was in a stable state.After excavation,the stability of the slope significantly decreased under conditions of heavy rainfall and earthquakes.When the reservoir water level rises rapidly,the groundwater at the toe of the slope is most affected,with water infiltrating from the reservoir into the slope,which increases the slope stability.Conversely,when the water level decreases,the sliding force on the potential slip mass increases,reducing the slope stability.The rapid decrease in water level is found to be the greatest factor affecting the stability of the slope.Furthermore,after the slope was reinforced with anchor bolts,the slope remained stable even under the most dangerous condition of a rapid water level drop,with a large safety margin.
作者
刘中政
LIU Zhong-zheng(Guangdong Hydropower Planning&Design Institute Co.,Ltd.,Guangzhou 510635,China)
出处
《广东水利电力职业技术学院学报》
2025年第2期43-46,共4页
Journal of Guangdong Polytechnic of Water Resources and Electric Engineering
