将下面摘要翻译成英文：平缓滑坡因地形坡度小易受强降雨影响而发生变形破坏。为深入研究强降雨对滑坡复活变形及稳定性的影响以湖北省秭归县土地岭滑坡为例进行强降雨条件下的滑坡渗流-应力耦合模拟分析不同降雨条件下的滑坡复活变形过程中的孔隙水压力、位移场变化和稳定性演化。研究表明平缓的土地岭滑坡的阶跃变形与集中强降雨密切相关降雨导致滑坡体内孔隙水压力从后部到前部逐渐增加前部响应最快；滑坡稳定性系数随降雨过程逐

The deformation and failure of gentle slope landslides are easily influenced by heavy rainfall due to their small terrain slope. In order to investigate the impact of heavy rainfall on the revival deformation and stability of landslides, a coupled simulation of seepage-stress under conditions of heavy rainfall was conducted using the TDL landslide in Zigui County, Hubei Province as an example. The evolution of pore water pressure, displacement field and stability under different rainfall conditions during the revival deformation process of the landslide was analyzed. The research shows that the step deformation of the gentle TDL landslide is closely related to concentrated heavy rainfall. Rainfall causes the pore water pressure inside the landslide to gradually increase from the back to the front, with the front responding the fastest. The stability coefficient of the landslide gradually decreases during the rainfall process, with the most significant decrease occurring within 24 hours. This has certain reference value for understanding the deformation mechanism and warning of landslides caused by heavy rainfall