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The Analysis of Deformation Mechanism and Its Stability of Tianchikou Landslide in Geheyan Reservoir on Qing River

YANG Wei-min1, XU Rui-chun2, WU Shu-ren1, SHI Ju-song1   

  1. 1.Institute of Geomechnics, Chinese Academy of Geological Sciences, Beijing 100081, China;2.Bureau of Investigation & Survey, Changjiang Water Resources Commission, Yichang,Hubei 443002,China
  • Received:2007-01-19 Revised:1900-01-01 Online:2007-09-26 Published:2007-09-26
  • Contact: YANG Wei-min

Abstract: Tianchikou landslide is a large unconsolidated deposit landslide in Geheyan reservoir area on Qing River. After the reservoir was impounded in April,1993,the landslide occurred to deform, especially the frontier edge of the landslide tended to be obvious. According to engineering exploration and lab tests data and field investigation, the deformation mechanism of the landslide has been discussed. The landslide stability has also been calculated and analyzed under the conditions of impounding and precipitation by means of limited equilibrium theory. The research shows that the landslide belongs to two layer structure. The deformation of the landslide results from reservoir impounding and sudden rise-fall of water level. The landslide is basically steady under the condition of normal impounding at present.

Key words: Tianchikou landslide, deformation mechanism, stability, impounding, Geheyan Reservoir

CLC Number: 

  • P642.22
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