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Volume 44 Issue 3
Jun.  2025
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Article Navigation >  CARSOLOGICA SINICA  > 2025  >  44(3): 587-597
PAN Zongyuan, SHU Rui, DAI Jianling, MENG Yan, LEI Mingtang, JIA Long, MA Xiao, BAI Bing. Mechanisms and critical criteria of coverd karst collapses under extreme rainfall conditions[J]. CARSOLOGICA SINICA, 2025, 44(3): 587-597. doi: 10.11932/karst20250308
Citation: PAN Zongyuan, SHU Rui, DAI Jianling, MENG Yan, LEI Mingtang, JIA Long, MA Xiao, BAI Bing. Mechanisms and critical criteria of coverd karst collapses under extreme rainfall conditions[J]. CARSOLOGICA SINICA, 2025, 44(3): 587-597. doi: 10.11932/karst20250308
shu

Mechanisms and critical criteria of coverd karst collapses under extreme rainfall conditions

doi: 10.11932/karst20250308
  • 1.

    Institute of Karst Geology, CAGS/ Innovation Center of Karst Collapse Prevention Technology, China Geological Survey, Guilin, Guangxi 541004, China

  • 2.

    International Research Centre on Karst under the Auspices of UNESCO/ National Center for International Research on Karst Dynamic System and Global Change,Guilin,Guangxi 541004,China;

  • 3.

    College of Civil and Architecture, Guilin University of Technology, Guilin, Guangxi 541004, China

  • 4.

    Guizhou Transportation Planning Survey and Design Academe Co., LTD., Guiyang, Guizhou 550001, China

  • Received Date: 2024-02-24
    Available Online: 2025-09-03
    Abstract
  • In recent years, the increasing occurrence of covered karst collapses triggered by rainfall conditions has posed a threat to human life and property safety. According to field investigations and statistical data, the triggering factors of karst collapses can be categorized into natural and human factors, with 40% of these collapses attributed to natural causes. Natural factors, such as rainfall, earthquake, tsunami, etc., exert different effects on the development of karst collapses. Notably, most karst collapses are associated with extreme rainfall conditions, indicating a correlation between rainfall and the occurrence of collapses. At present, research of the impact of rainfall on karst collapses mainly focuses on pressure changes in groundwater and air, the effects of increased load, vertical permeability deformation, and saturation erosion caused by rainfall infiltration. However, there is a scarcity of studies providing quantitative analyses of the evolution process of karst collapses triggered by rainfall. Therefore, understanding the mechanisms of karst collapses under extreme rainfall conditions has been considered as a key research objective. Based on field investigations, a hydrogeological structural model has been developed, taking into account the hydrogeological conditions and the presence of covered karst collapses in the study area. Subsequently, a physical model of these collapses has been constructed to simulate their formation process under rainfall conditions. To enhance the understanding of the mechanisms of karst collapses and to further refine methods for preventing their occurrence, the dynamic characteristics of pore water pressure, earth pressure, and displacement of overburden materials have been monitored and analyzed through model testing. In addition, the coupling effect among pore water pressure, earth pressure, and displacement of overburden materials has been comprehensively analyzed, along with the formation processes, collapse types, and triggering factors associated with these events.The results show that: (1) The pore water pressure, earth pressure, and displacement of overburden layers under extreme rainfall conditions exhibit synchronous deformation patterns and present as a strong correlation with different evolution stages of karst collapses. As the rainfall intensity and frequency increase, the pore pressure and earth pressure of overburden materials also rise continuously, which is related to water retention capacity of overburden layers. Additionally, variation in displacement of overburden materials reflects the formation process of karst collapses. When a collapse occurs, displacement of overburden materials manifests as a rapid variation curve. (2) Under extreme rainfall conditions, karst collapses can be categorized into two types: creep failure and compression-shear fracture. In the case of creep failure, the pore pressure and the earth pressure of overburden materials exhibit similar form peak-cluster fluctuations. The dynamic curves of pore pressure and earth pressure experience homogeneous variations, while both pressures constantly increase. The displacement of deeper layers initially increases and then decreases, whereas the displacement of the upper and middle layers gradually increases with the frequency of rainfall cycles. Furthermore, in the compression-shear fracture type, the pore pressure, earth pressure, and displacement display isolated peaks, which sharply increase over a short period before decreasing. (3) The formation process of creep failure type of karst collapse involves softening, water loading, and corrosion absorption, leading to soil damage, the increase and enlargement of pores and cracks, and ultimately resulting in forming ground collapses. This type of karst collapses is the result of circulation and accumulation effects of softening, water saturation and increased load, and soil damage. Conversely, the formation process of the compression-shear fracture type of karst collapses consists of softening and water loading, followed by vertical shear failure of the roof and subsequent ground collapse. This suggests that karst collapses are mainly induced by water saturation, increased load, and soil damage.The critical early warning criteria of karst collapses in the study area should take into account the different overburden thicknesses: (1) When the overburden thickness is 0.5 m, the critical pore water pressure in the study area is 17.95 kPa to 19.1 kPa, the critical earth pressure is 15.3 kPa to 17.3 kPa, and the critical displacement is 589.95 μm to 928.4 μm. (2) When the overburden thickness is 1.0 m, the critical pore water pressure is 23.55 kPa to 25.55 kPa, the critical earth pressure is 17.75 kPa to 20.95 kPa, and the critical displacement is 770.7 μm to 988.6 μm. (3) When the overburden thickness is 1.5 m, the critical pore water pressure is 29.15 kPa to 30.4 kPa, the critical earth pressure is 20.25 kPa to 26.5 kPa, and the critical displacement is 967.25 μm to 1,087.5 μm. The overburden thickness is positively correlated with the critical criteria of covered karst collapses, which indicates that a thicker overburden layer provides better anti-collapse properties. This paper focuses on the mechanisms and critical criteria of rainfall-induced karst collapses. However, during rainfall infiltration, a relatively impermeable layer forms within the overburden layer, and fluctuations in the groundwater level will compress the air in the cavity of rock and soil materials, resulting in a complex water-soil-air coupling effect. Understanding this coupling effect and the collapse mechanism is of great significance for improving the mechanism theory of karst collapses, which will be further studied in the following experiments.

     

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    • References(19)
  • [1]
    Lei M T, Gao Y L, Jiang X Z, Guan Z D. Mechanism analysis of sinkhole formation at Maohe village, Liuzhou city, Guangxi province, China[J]. Environ Earth Science, 2016(75): 542.
    [2]
    JIANG Xiaozhen, LEI Mingtang, GAO Yongli. Formation mechanism of large sinkhole collapses in Laibin, Guangxi, China[J]. Environ Earth Sci, 2017(76): 823.
    [3]
    Zhou Y F, Tham L G, Yan R W M, Xu L.The mechanism of soil failures along cracks subjected to water infiltration[J]. Computers and Geotechnics, 2014(55): 330-341.
    [4]
    罗先启, 毕金锋. 地质力学模型试验理论与应用[M]. 上海: 上海交通大学出版社, 2016: 7-27.

    LUO Xianqi, BI Jinfeng. Geomechanics model test theory and application[M]. Shanghai: Shanghai Jiao Tong University Press, 2016: 7-27.
    [5]
    雷明堂, 蒋小珍, 李瑜. 唐山市岩溶塌陷模型试验研究[J]. 中国地质灾害与防治学报, 1997(8): 179-186.

    LEI Mingtang, JIANG Xiaozhen, LI Yu. Model experiment of karst collapse in Tangshan[J]. The Chinese Journal of Geological Hazard and Control, 1997(8): 179-186.
    [6]
    JIANG Fuwei, DAI Jianling, LEI Mingtang, QIN Youqiang, JIANG Xiaozhen, MENG Yan. Experimental study on the critical triggering condition of soil failure in subsidence sink- holes[J]. Environ Earth Science, 2015(74): 693-701.
    [7]
    张鑫, 崔可锐, 查甫生. 覆盖型岩溶塌陷临界水位降幅模型试验研究[J]. 科学技术与工程, 2016, 16(12): 195-200.ZHANG Xin, CUI Kerui, ZHA Pusheng. Experiment research of the critical water level fell of covered karst collapse [J]. Science Technology and Engineering, 2016,16(12):195-200. doi: 10.3969/j.issn.1671-1815.2016.12.033
    [8]
    陶小虎, 赵坚, WANG Xiaoming, YE Ming, Roger Benito Pacheco Castro. 地下水位变化对透-阻型岩溶塌陷影响的分析[J]. 中国岩溶, 2017, 36(6): 777-785. doi: 10.11932/karst2017y50

    TAO Xiaohu, ZHAO Jian, WANG Xiaoming, YE Ming, Roger Benito Pacheco Castro. Analysis of seepage effect on the formation of sinkhole in unconfined aquifer-aquitard system caused by groundwater changes[J]. Carsologica Sinica, 2017, 36(6): 777-785. doi: 10.11932/karst2017y50
    [9]
    吴庆华, 张伟, 刘煜, 崔皓东. 基于物理模型试验的岩溶塌陷定量研究[J]. 长江科学院院报, 2018, 35(3): 52-58. doi: 10.11988/ckyyb.20171079

    WU Qinghua, ZHANG Wei, LIU Yu, CUI Haodong. Quantifying the process of karst collapse by a physical model[J]. Journal of Yangtze River Scientific Research Institute, 2018, 35(3): 52-58. doi: 10.11988/ckyyb.20171079
    [10]
    张少波, 简文彬, 洪儒宝, 黄鹏, 陈鸿志, 刘奔. 水位波动条件下覆盖型岩溶塌陷试验研究[J]. 工程地质学报, 2019, 27(3): 659-667.

    ZHANG Shaobo, JIAN Wenbin, Hong Rubo, HUANG Peng, CHEN Hongzhi, LIU Ben. Experimental study on collapse of covered karst under water-level fluctuation[J]. Journal of Enginnering Geology, 2019, 27(3): 659-667.
    [11]
    郭思源, 苏永华, 刘煌海, 黎诗诚, 尹文杰. 地下水位线倾斜的地面塌陷演化过程试验研究[J]. 铁道科学与工程学报, 2003, 20(5): 1774-1786.

    GUO Siyuan, SU Yonghua, LIU Huanghai, LI Shicheng, YIN Wenjie. Experiments on collapse evolution process of karst stratum with inclined groundwater level[J]. Journal of Railway Science and Engineering, 2003, 20(5): 1774-1786.
    [12]
    丁庆忠. 弱透水盖层岩溶塌陷的水—气压力致塌机理[D]. 成都: 成都理工大学, 2016.

    DING Qingzhong. Weakly permeable overburden of water-gas pressure to collapse mechanism of the karst collapse physical model research [D].Chengdu: Chengdu University of Technology, 2016.
    [13]
    XIAO Xianxuan, Gutiérrez Francisco, Guerrero Jesús . The impact of groundwater drawdown and vacuum pressure on sinkhole development. Physical laboratory models[J]. Engineering Geology, 2020(279): 1-10.
    [14]
    马骁, 蒋小珍, 曹细冲, 潘宗源. 岩溶空腔水气压力脉动效应的发现及意义[J]. 中国岩溶, 2019, 38(3): 404-410. doi: 10.11932/karst20190310

    MA Xiao, JIANG Xiaozhen, CAO Xicong, PAN Zongyuan. Discover and significance of water-gas pressure pulsation effect within karst cavity[J]. Carsologica Sinica, 2019, 38(3): 404-410. doi: 10.11932/karst20190310
    [15]
    SHI Hai, LI Quanming, ZHANG Qinglong, YU Yuzhen, XING Yujian, YU Kun. Mechanism of shallow soil cave-type karst collapse induced by water inrush in underground engineering construction[J].Journal of Performance of Constructed Facilities, 2020, 34(1): 0887.
    [16]
    熊启华, 高旭, 涂婧, 王芮琼, 晏鄂川, 李祖春. 负压作用下土洞型岩溶塌陷机理及力学模型研究[J]. 人民长江, 2022, 53(9): 163-168.

    XIONG Qihua, GAO Xu, TU Jing, WANG Ruiqiong, YAN Echuang, LI Zuchun. Mechanism of soil-cave type karst collapse under negative pressure and its mechanical model[J]. Yangtze River, 2022, 53(9): 163-168.
    [17]
    张晓宸, 陈学军, 唐灵明, 杨鑫, 班如龙, 宋宇. 水位波动条件下岩溶土洞塌陷的模型试验[J]. 桂林理工大学学报, 2022, 42(3): 593-600.

    ZHANG Xiaochen, CHEN Xuejun, TANG Lingming, YANG Xin, BAN Rulong, SONG Yu. Model test of karst soil cave collapse under water level fluctuation[J]. Journal of Guilin University of Technology, 2022, 42(3): 593-600.
    [18]
    洪儒宝, 简文彬, 陈雪珍. 覆盖型岩溶土洞对地下水升降作用的响应及其塌陷演化过程[J]. 工程地质学报, 2023, 31(1): 240-247.

    HONG Rubao, JIAN Wenbin, CHEN Xuezhan. Study on the response of covered karst soil cave to groundwater changes and its collapse evolution process[J]. Journal of Engineering Geology, 2023, 31(1): 240-247.
    [19]
    赵颖文, 孔令伟, 郭爱国, 拓勇飞. 广西原状红黏土力学性状与水敏性特征[J]. 岩土力学, 2003, 24(4): 568-573.ZHAO Yingwen, KONG Lingwei, GUO Aiguo, TUO Yongfei. Mechanical behaviors and water-sensitive properties of intact Guangxi laterite [J]. Rock and Soil Mechanics, 2003, 24(4): 568-573. doi: 10.3969/j.issn.1000-7598.2003.04.017
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