涔天河水库扩建工程泄洪雾化对2#滑坡体稳定性评价

Evaluation of Atomization by Flood Discharge in Centianhe Reservoir Expansion Project of the 2# Landslide Stability

暴雨是导致滑坡失稳的主要因素之一,涔天河水库扩建工程泄洪洞泄洪时,将在出口附近雾化产生远>100 mm/h强度的暴雨,利用有限元模拟泄洪雾化暴雨时泄洪洞出口河对岸2#滑坡体的暂态渗流场,将计算得到的暂态孔隙水压力分布值用于滑坡的极限平衡分析,探讨雾化暴雨时长对2#滑坡体稳定性的影响。研究表明:当雾化暴雨强度为100 mm/h时,2#滑坡在泄洪洞泄洪6 h将发生整体失稳。

The heavy rain is one of the main factors of unstability. Centianhe reservoir expansion project releasing flood water, will have a far greater than 100 mm/h intensity rainstorm near the outlet atomization, transient seepage field is simulated using the finite element. The calculated transient pore water pressure distribution for limit equilibrium analysis of landslide ,to study the effect of the length of atomized rain on 2# landslide stability. The results show that when the atomizing rainfall intensity is 100mm/h ,6h long hole in release flood water will occur overall unstability of 2# landslide.