Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
doi:10.5194/nhess-2016-345
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
19 Dec 2016
Review status
A revision of this discussion paper is under review for the journal Natural Hazards and Earth System Sciences (NHESS).
Influencing factors and development patterns of cracking–sliding failure of loess in China
Jiarui Mao1, Xiqiong Xiang1, and Yanrong Li2 1Guizhou University, Guiyang, 550025, China
2Department of Earth Sciences and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
Abstract. Loess is a porous, weakly cemented, and unsaturated Quaternary sediment deposited in arid and semi-arid regions by the wind. It is widely and thickly distributed in China, making the Loess Plateau the largest bulk accumulation of loess on the Earth. However, the fragile geoenvironment in the loess areas of China causes frequent and various geohazards, among which, the Cracking-sliding (Beng-hua) is a typical failure mode because it causes the largest number of casualties each year. This study investigates the development pattern and main influencing factors of cracking–sliding failure to help in effectively preventing its occurrence and reducing losses. The following conclusions are derived: (1) cracking–sliding failures are prone to occur in rectilinear slopes, convex slopes, slopes with gradients greater than 60°, slopes with heights of 5 m to 40 m, and sunward slopes with aspects of 180° to 270°; (2) cracking–sliding failures occur mostly from 9 p.m. to 4 a.m. the next day, and concentrates in the rainy season (July to September) and freeze-thaw season (March to May); and (3) the more intense the human activities in the region, the greater the possibility of cracking–sliding failures.

Citation: Mao, J., Xiang, X., and Li, Y.: Influencing factors and development patterns of cracking–sliding failure of loess in China, Nat. Hazards Earth Syst. Sci. Discuss., doi:10.5194/nhess-2016-345, in review, 2016.
Jiarui Mao et al.
Jiarui Mao et al.
Jiarui Mao et al.

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