REVICE MECHANISM AND DEVELOPING TENDENCY OF ANCIENT LANDSLIDE IN TUFENOYAN-MAJIABA OF THREE GORGES REGION

Liu Xin-min; Wang Shu-min; Peng Bing-kun

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REVICE MECHANISM AND DEVELOPING TENDENCY OF ANCIENT LANDSLIDE IN TUFENOYAN-MAJIABA OF THREE GORGES REGION

- REVICE MECHANISM AND DEVELOPING TENDENCY OF ANCIENT LANDSLIDE IN TUFENOYAN-MAJIABA OF THREE GORGES REGION
- Bulletin of Soiland Water Conservation Vol. 5, Issue 5, Pages: 41-48(1986)
- 作者机构：
  
  1. 中国科学院成都地理研究所
  2. 湖北省秭归县水电局
- 作者简介：
- 基金信息：
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- Published：1986
- 稿件说明：
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Liu Xin-min, Wang Shu-min, Peng Bing-kun. REVICE MECHANISM AND DEVELOPING TENDENCY OF ANCIENT LANDSLIDE IN TUFENOYAN-MAJIABA OF THREE GORGES REGION[J]. Bulletin of Soiland Water Conservation, 1986, 5(5): 41-48.
DOI：

Liu Xin-min, Wang Shu-min, Peng Bing-kun. REVICE MECHANISM AND DEVELOPING TENDENCY OF ANCIENT LANDSLIDE IN TUFENOYAN-MAJIABA OF THREE GORGES REGION[J]. Bulletin of Soiland Water Conservation, 1986, 5(5): 41-48. DOI：

摘要

继1982年鸡筏子滑坡、1985年新滩滑坡之后

于1986年7月16日

距长江南岸7.5公里的秭归县土凤岩—马家坝又发生一起灾害性滑坡。滑坡性质

属历史上古滑坡的一次全面复活。滑体总量约3

000万立方米。滑坡为特大暴雨触发

起始于坡体上部基岩崩塌堵沟。沟内水位迅速陡涨

洪水在短时间内侧向注入古崩滑体内

产生强大的动水、静水压力

推动坡体中下部各级古滑体向下滑移

直至河谷为止。目前滑体重心还相当高

地表裂缝密集

两侧天然排水沟被滑坡堆积物充填

滑坡堵江的趋势已势在必然。防治措施是

继续开展滑坡监测及报警工作

修复排水系统

改水田为旱地

夯实地表裂缝。

Abstract

Following Jifazi landslide occurred in 1982 and Xintian landslide in 1985

a catastrophic landslide of Majiaba in Zigui County occurred on 16 July

1986

about 7.5 km south of Yangtze River

being a complete revice of historic dormant landslide. Its revice was triggered by particularly heavy rainfall. The reactivated landslide attained a volume of 30 million m~3. Being due to damming gully by rock collapse at upper part of the slope

impounding water level in the gully rose rapidly

flooding emptied both-sidely into ancient slide deposits in a short time

creating a strong dynamic-statical water pressure

pushing ancient slide deposits on the middle-lower part of the slope to move downward till the valley. The gravity center of the gliding mass is higher now

there are many ruptures on the ground

both sides natural drains are filled by sliding deposits

therefore there must be a tendency of damming river. Taking continually monitor of slide movement

sliding

warning repairing drain system

transforming paddy fields into dry land

ramming ruptures on the ground can be taken as countermeasures.

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