DEFORMATION MECHANISM AND EVOLUTIONARY PROCESS OF THE TIANSHUI FORGING MACHINE PLANT LANDSLIDE IN GANSU

TTIAN You; YANG Wei-min; LIU Ting; LI Hao; CHENG Xiao-jie

Volume 21 Issue 2

Jun. 2015

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Article Navigation > Journal of Geomechanics > 2015 > 21(2): 298-308

QI Xin, HUANG Bo-lin, LIU Guang-ning, et al., 2017. LANDSLIDE SUSCEPTIBILITY ASSESSMENT IN THE THREE GORGES AREA, CHINA, ZIGUI SYNCLINAL BASIN, USING GIS TECHNOLOGY AND FREQUENCY RATIO MODEL. Journal of Geomechanics, 23 (1): 97-104.

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TTIAN You, YANG Wei-min, LIU Ting, et al., 2015. DEFORMATION MECHANISM AND EVOLUTIONARY PROCESS OF THE TIANSHUI FORGING MACHINE PLANT LANDSLIDE IN GANSU. Journal of Geomechanics, 21 (2): 298-308.

Citation:

TTIAN You, YANG Wei-min, LIU Ting, et al., 2015. DEFORMATION MECHANISM AND EVOLUTIONARY PROCESS OF THE TIANSHUI FORGING MACHINE PLANT LANDSLIDE IN GANSU. Journal of Geomechanics, 21 (2): 298-308.

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DEFORMATION MECHANISM AND EVOLUTIONARY PROCESS OF THE TIANSHUI FORGING MACHINE PLANT LANDSLIDE IN GANSU

TTIAN You^1
,,
YANG Wei-min²,
LIU Ting^{1, 2},
LI Hao^{1, 2},
CHENG Xiao-jie²

1.
School of Geosciences and Resources, China University of Geosciences, Beijing 100083, China
2.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

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Abstract

Abstract

The Tianshui Forging Machine Plant Landslide in Gansu Province happened on August 11, 1990 with a volume of 1.4×10⁶ m³. It is a loess interface landslide occurring along the loess/mudstone interface. The landslide body is mainly composed of secondary loess, and the slip bed is mainly composed of Quaternary loess and Neogene mudstone. The landslide is controlled by the double-layered structure of the slope in area, being induced by some factors such as engineering excavation, rainfall and irrigation. The research on the deformation mechanism and evolutionary process of the landslide based on geological survey and engineering drilling shows that the formation process can be divided as follow: the formation period of high and steep side slopes; the landslide incubation period; sliding surface through critical period; landslide falling and accumulating period; landslide revival and deformation period. Field investigation and engineering drilling indicate that the landslide is unstable at present. It can most likely revive and slide again if there is earthquake or heavy rainfall. The results can provide theoretical basis for the disaster warning of this kind of landslide.
- the Tianshui Forging Machine Plant Landslide,
- engineering excavation,
- deformation mechanism,
- evolutionary process

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References

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DEFORMATION MECHANISM AND EVOLUTIONARY PROCESS OF THE TIANSHUI FORGING MACHINE PLANT LANDSLIDE IN GANSU

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