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Developmental Characteristics and Genesis of Ground Fissures in Wangjiacun, Emei Plateau, Yuncheng Basin, China

Author

Listed:
  • Feida Li

    (Institute of Geosafety, School of Engineering and Technology, China University of Geosciences Beijing, Beijing 100083, China)

  • Feiyong Wang

    (Institute of Geosafety, School of Engineering and Technology, China University of Geosciences Beijing, Beijing 100083, China
    Key Laboratory of Earth Fissures Geological Disaster, Ministry of Natural Resources (Geological Survey of Jiangsu Province), Nanjing 210018, China
    Observation and Research Station of Ground Fissure and Land Subsidence, Ministry of Natural Resources, Xi’an 710054, China
    Engineering and Technology Innovation Center for Risk Prevention and Control of Major Project Geosafety, MNR, Beijing 100083, China)

  • Fujiang Wang

    (Institute of Geosafety, School of Engineering and Technology, China University of Geosciences Beijing, Beijing 100083, China)

  • Guoqing Li

    (Institute of Geosafety, School of Engineering and Technology, China University of Geosciences Beijing, Beijing 100083, China)

Abstract

The Yuncheng Basin is part of the Fenwei Graben System, which has developed ground fissure hazards that have caused serious damage to farmland, houses, and roads and have brought about huge economic losses. Located in Wanrong County on the Emei Plateau in the northwestern part of the Yuncheng Basin in China, the Wangjiacun ground fissure is a typical and special ground fissure developed in loess areas, and its formation is closely related to tectonic joints and the collapsibility of loess. In order to reveal the formation and genesis of the Wangjiacun ground fissure, the geological background, developmental characteristics, and genesis pattern of the Wangjiacun ground fissures were studied in detail. A total of three ground fissures have developed in this area: a linear fissure (f1) is distributed in an NNE-SSW direction, with a total length of 334 m; a circular fissure (f2) is located near the pool, with a total length of 720 m; f2-1, a linear fissure near f2, has a fissure length of 110 m and an NE orientation. This study shows that tectonic joints in loess areas are the main controlling factors of the linear fissure (f1); differential subsidence in the pool caused by collapsible loess is the main source of motivation for the formation of the circular fissures (f2, f2-1), and tensile stresses produced by the edges of subsidence funnels lead to the cracking of shallow rock and soil bodies to form ground fissures (f2, f2-1). This study enriches the theory of ground fissure genesis and is of great significance for disaster prevention and the mitigation of ground fissures in loess areas.

Suggested Citation

  • Feida Li & Feiyong Wang & Fujiang Wang & Guoqing Li, 2024. "Developmental Characteristics and Genesis of Ground Fissures in Wangjiacun, Emei Plateau, Yuncheng Basin, China," Sustainability, MDPI, vol. 16(9), pages 1-13, April.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:9:p:3649-:d:1383778
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    References listed on IDEAS

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    1. Xiaokun Hou & Shengwen Qi & Fangcui Liu, 2023. "Soil Water Retention and Pore Characteristics of Intact Loess Buried at Different Depths," Sustainability, MDPI, vol. 15(20), pages 1-10, October.
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