Characteristic of Interflow Production Processes on the Landslide Deposit in Wenchuan Earthquake Area

GAN Fengling1; WANG Tao2; HE Binghui1

doi:10.13870/j.cnki.stbcxb.2016.05.012

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Characteristic of Interflow Production Processes on the Landslide Deposit in Wenchuan Earthquake Area

更新时间：2025-03-12

- Characteristic of Interflow Production Processes on the Landslide Deposit in Wenchuan Earthquake Area
- Vol. 30, Issue 5, Pages: 69-75(2016)
- 作者机构：
  
  1. 西南大学资源环境学院,三峡库区生态环境教育部重点实验室,重庆,400715
  2. 中国电力工程顾问集团中南电力设计院有限公司,武汉,430071
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2016.05.012
  CLC： S157.1
- Published：2016
- 稿件说明：
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GAN Fengling1, WANG Tao2, HE Binghui1. Characteristic of Interflow Production Processes on the Landslide Deposit in Wenchuan Earthquake Area[J]. 2016, 30(5): 69-75.
DOI：

GAN Fengling1, WANG Tao2, HE Binghui1. Characteristic of Interflow Production Processes on the Landslide Deposit in Wenchuan Earthquake Area[J]. 2016, 30(5): 69-75. DOI： 10.13870/j.cnki.stbcxb.2016.05.012.

摘要

“5·12”汶川地震引发了大量的山体滑坡，在降雨径流的冲刷下，造成更加严重的次生灾害。为研究震区滑坡堆积体的壤中流产流特征，采用室内人工降雨装置，对在不同降雨强度（1.0，1.5，2.0 mm/min）和土石比(1︰1，1︰2，1︰4)条件下滑坡堆积体壤中流产流开展人工降雨—产流过程的试验。结果表明：（1）在不同土石比的条件下，壤中流总体趋势体现为在开始阶段增长极快，然后趋于稳定阶段直至降雨停止后，壤中流产流量迅速减小。（2）壤中流累计产流量和降雨时间为线性显著相关（R2为0.946 5～0.999 6）。（3）随着降雨强度的增大

土石比1︰1与土石比1︰2的滑坡堆积体壤中流产流时间表现出的规律相反，而土石比1︰4的滑坡堆积体表现却无规律可循。（4）在土石比为1︰4的堆积体只有壤中流存在；土石比1︰1的滑坡堆积体在雨强为2.0 mm/min时，壤中流时间略长于地表径流产流时间；其他情况下的地表产流时间长于壤中流产流时间，且壤中流产流时间均在10 min以内。

Abstract

The Wenchuan earthquake led to a lot of landslide deposit. It was triggered more serious secondary geological disasters under the condition of rain washing out. In this article

the landslide deposit was chosen to be the research object in the Wenchuan earthquake area

an artificial rainfall device was used to conduct indoor rainfall-interflow production observation experiment at different rainfall intensities (1.0

1.5

2.0 mm/min) and soil-rock ratios(1︰1

1︰2

1︰4). The results indicated that: (1) The interflow increase rapidly in the beginning

then stabilized gradually until the rainfall stopped under the different rock-ratio. (2) The interflow yield presented a significant positive correlation with the rainfall time (R2=0.946 5～0.999 6). (3) Except for the soil-rock 1︰4 of landslide deposit

the time of the interflow production process showed significantly different laws between the soil-rock 1︰1 and 1︰2 is opposite under the increase of rainfall intensity. (4) The soil-rock 1︰4 of landslide deposit only produced interflow yield; Except for the time of interflow production was a little longer than the time of surface runoff when the soil-rock 1︰1 of landslide deposit under the conditions of 2.0 mm/min rainfall intensity

the other’s interflow production was shorter than the time of surface runoff within 10 min.

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