中文摘要：

5.12汶川地震引发了大量的滑坡堆积体,在雨水的冲刷下,不仅会造成山体崩塌,还会发生次生灾害。本文以汶川震区滑坡堆积体为研究对象,采用室内人工模拟降雨方法,探讨了不同降雨强度和土石比条件下滑坡堆积体坡面产流与入渗规律。结果表明：（1）除土石比1∶4的滑坡堆积体在所设计的降雨强度（1.0,1.5和2.0 mm/min）和土石比为1∶2滑坡堆积体在降雨强度为1.0 mm/min时没有出现产流,其他条件下的滑坡堆积体的产流时间随着降雨强度的增大而减小,而产流率随着降雨强度的增大而增大,且土石比为1∶1的平均产流率比土石比为1∶2的滑坡堆积体大。（2）根据3种入渗模型的对比分析,可知Horton模型为最适合震区堆积体的入渗模型。（3）在降雨强度为1.5 mm/min时,土石比1∶1的滑坡堆积体累积产流量比土石比为1∶2的堆积体大;在降雨强度为2.0 mm/min时,土石比1∶1和1∶2滑坡堆积体累积产流量的变化规律几乎相同。本研究可为汶川震区滑坡堆积体的灾后修复提供实验依据。

英文摘要：

The Wenchuan earthquake led to a lot of landslide deposits,which triggered mountain collapseand secondary geological disasters under the condition of rain washing out. In this article,the landslide de-posit was chosen as the research object in the Wenchuan Earthquake area,and the slope runoff and infil-tration principle of the landslide deposit was researched by using indoor artificial rainfall simulation methodunder the conditions of different rainfall intensities and earth rock ratios. The results show that：（1） Therewas no runoff under the conditions of the earth-rock ratio of 1∶4 and the earth-rock ratio of 1∶2 at therainfall intensity of 1.0 mm/min,the runoff time of deposit decreased with the increasing rainfall intensity,but the runoff rate was opposite and the average flow rate of earth-rock ratio of 1∶1 was greater than thatof 1∶2.（2） The infiltration showed significantly different laws under the three kinds of earth-rock depositand rainfall intensity, and the Horton model was the most suitable model to describe the infiltration onWenchuan Earthquake landslide deposit.（3） The cumulative runoff of earth-rock ratio of 1∶1 was greaterthan that of 1∶2 under the conditions of 1.5mm/min rainfall intensity while the cumulative runoff of earth-rock ratio of 1∶1 was equal to the earth-rock ratio of 1∶2 under the conditions of 2.0mm/min rainfall inten-sity. This study provides strong experimental basis for managing the Wenchuan earthquake landslide deposit.