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Volume 42 Issue 2
Apr.  2023
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Article Navigation >  CARSOLOGICA SINICA  > 2023  >  42(2): 361-369
CHEN Biaodian, LI Xi, XIONG Qihua, LI Yulei, TU Jing, LIU Pengrui, Ye Jiang. Evolution and monitoring of karst ground collapse in the Zhifang-Miaoshan paleo-clay area of Wuhan[J]. CARSOLOGICA SINICA, 2023, 42(2): 361-369. doi: 10.11932/karst20230207
Citation: CHEN Biaodian, LI Xi, XIONG Qihua, LI Yulei, TU Jing, LIU Pengrui, Ye Jiang. Evolution and monitoring of karst ground collapse in the Zhifang-Miaoshan paleo-clay area of Wuhan[J]. CARSOLOGICA SINICA, 2023, 42(2): 361-369. doi: 10.11932/karst20230207
shu

Evolution and monitoring of karst ground collapse in the Zhifang-Miaoshan paleo-clay area of Wuhan

doi: 10.11932/karst20230207
  • 1.

    Hubei Key Laboratory of Resources and Eco-environmental Geology, Wuhan, Hubei 430034, China

  • 2.

    Geological Environmental Center of Hubei Province, Wuhan, Hubei 430034, China

  • Received Date: 2022-05-24
    Abstract
  • This study is aimed at finding out the disaster mechanism of karst ground collapse in the Zhifang-Miaoshan paleo-clay area of Wuhan and selecting appropriate methods for the monitoring and early warning, so as to effectively reduce the harm caused by karst ground collapse. Through a special karst survey, we have identified the distribution and geological structure of soluble rocks, analyzed the formation and evolution process of karst ground collapse and selected monitoring methods for different collapse stages in the study area. The survey results show that the study area is mostly distributed by paleo-clay with single-layered structure. According to the upper and lower stacking relationship of overburden cohesive soil, soft soil and non-soluble rock (red layer), the geological structure distribution of soluble rock can be divided into three categories (①, ② and ③). In the structure of class ①, the upper part is composed of cohesive soil; the lower part is soluble rock. The cohesive soil is mostly composed of paleo-clay with the value of cohesion C mainly from 42 kPa to 70 kPa, and the φ value mostly from 10.3° to 19.1°. The free movement of the soil particles is limited, and soil holes are usually formed at the bottom of the soil layer in the soil body. In the structure of class ②, the upper part is composed of cohesive soil; the middle part is soft soil (residual red clay in the shape of soft plastic-flow plastic); the lower part is composed of soluble rock, in which the red clay—weathering residues of the limestone surface—is prone to soften in the shape of soft-fluid plastic in water. Mainly distributed in solution grooves with uneven thicknesses, the red clay usually loses with the action of gravity or suction force, and hence is developed into soil holes. In the structure of class ③, the upper part is composed of cohesive soil; the middle part is the red layer (K2E1g red sandstone); the lower part is soluble rock. In this structure, soil holes are difficult to form due to the barrier of red layer; therefore, karst ground collapse is not likely to occur under the natural condition. According to the different physical and mechanical characteristics of soil bodies, the process mechanism of karst ground collapse is various in different geological structures. Soil-hole collapse mainly occurs in the structure of class ①.The disaster evolution process can be summarized as follows: (A) In the undisturbed stage, the karst water level drops little, and the small value of the suction negative pressure leads to the failure of soil denudation caused by insufficient suction force. Therefore, there is no significant change in the soil body. (B) Affected by the repeated fluctuations of karst groundwater level or human engineering activities, the soil hole is developed initially along the surface of the open karst cave, when the corrosion absorption force is greater than the collapse resistance force of the soil itself. Then the soil of the cave roof collapsed, and the continuous collapse upward contributes to the expanding of the soil hole and the thinning of its roof. (C) The hole continues to expand upwards, and the roof of the soil hole keeps balanced under the friction force generated by the lateral pressure of soil around it. In the early stage of imminent collapse, the ground surface often presents a small amount of subsidence deformation. (D) Induced by natural or man-made factors, the surrounding friction can not balance the gravity of the roof of soil hole. Consequently, the roof may collapse quickly. In the structure of class ②, there mainly occurs compound collapse of mud flow+soil hole. The process of disaster formation and evolution can be summarized as follows: (A) Thick layers of soft soil and cohesive soil are developed on the upper soluble rock. The karst opening is in the stable stage due to the blockage of the cohesive soil. (B) Affected by fluctuations of karst groundwater level or human engineering activities, the soft soil flows and loses to the cave fissure, which forms the mudflow hole, and the hole quickly expands to the top of the soft soil. (C) The soil hole continues to expand upward in the layer of cohesive soil, and the roof of the soil hole keeps balanced under the friction force generated by the lateral pressure of soil around it. In the early stage of imminent collapse, the ground surface often presents a small amount of subsidence deformation. (D) Induced by natural or man-made factors, the surrounding friction can not balance the roof of soil hole (dead weight+loading); consequently, the roof collapsed quickly. Besides, the quick loss of red clay in shapes of soft plastic-fluid plastic accelerates karst ground collapse. In the structure of class ③, it is unlikely to occur collapse because the barrier of red layer makes it difficult to form the cohesive soil. Combined with the formation mechanism of collapse, the formation and evolution of soil hole can be monitored by optical fiber, and induced factors such as groundwater levels and water pressures should also be monitored. During the deformation and collapse stage, precise leveling or GPS monitoring can be used to monitor surface deformation because the ground surface often presents a small amount of subsidence deformation before the imminent collapse.

     

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    • References(14)
  • [1]
    徐卫国, 赵桂荣. 论岩溶塌陷形成机理[J]. 煤炭学报, 1986(2):1-11. doi: 10.13225/j.cnki.jccs.1986.02.001

    XU Weiguo, ZHAO Guirong. On the mechanism of karst collapse formation[J]. Journal of China Coal Society, 1986(2):1-11. doi: 10.13225/j.cnki.jccs.1986.02.001
    [2]
    康彦仁. 论岩溶塌陷形成的致塌模式[J]. 水文地质工程地质, 1992(4):32-34, 46. doi: 10.16030/j.cnki.issn.1000-3665.1992.04.014

    KANG Yanren. On the collapse-causing mode of karst collapse formation[J]. Hydrogeology & Engineering Geology, 1992(4):32-34, 46. doi: 10.16030/j.cnki.issn.1000-3665.1992.04.014
    [3]
    罗小杰, 罗程. 岩溶地面塌陷三机理理论及其应用[J]. 中国岩溶, 2021, 40(2):171-188.

    LUO Xiaojie, LUO Cheng. Three-Mechanism Theory (TMT) of karst ground collapse and its application[J]. Carsologica Sinica, 2021, 40(2):171-188.
    [4]
    王金晨, 吴迪, 娄万鹏, 吴远斌. 岩溶塌陷监测技术及发展趋势[J]. 工程技术研究, 2021, 6(8):55-57. doi: 10.3969/j.issn.1671-3818.2021.08.023

    WANG Jinchen, WU Di, LOU Wanpeng, WU Yuanbin. Karst collapse monitoring technology and development trend[J]. Engineering and Technological Research, 2021, 6(8):55-57. doi: 10.3969/j.issn.1671-3818.2021.08.023
    [5]
    李成香, 刘磊, 周世昌, 王斌战. 物探技术在岩溶塌陷灾害监测预警中的应用研究[J]. 资源环境与工程, 2021, 35(6):887-894. doi: 10.16536/j.cnki.issn.1671-1211.2021.06.020

    LI Chengxiang, LIU Lei, ZHOU Shichang, WANG Binzhan. Application of geophysical prospecting technology in karst collapse disaster monitoring and early warning[J]. Resources Environment & Engineering, 2021, 35(6):887-894. doi: 10.16536/j.cnki.issn.1671-1211.2021.06.020
    [6]
    蒋小珍, 雷明堂. 岩溶塌陷灾害的岩溶地下水气压力监测技术及应用[J]. 中国岩溶, 2018, 37(5):786-791.

    JIANG Xiaozhen, LEI Mingtang. Monitoring technique and its application of karst groundwater-air pressure in karst collapse[J]. Carsologica Sinica, 2018, 37(5):786-791.
    [7]
    王甫强, 张占彪, 李虎, 柯洋. 光纤传感技术在岩溶地面塌陷地质灾害监测中的应用[J]. 城市勘测, 2021(4):174-178. doi: 10.3969/j.issn.1672-8262.2021.04.041

    WANG Fuqiang, ZHANG Zhanbiao, LI Hu, KE Yang. Application of optical fiber sensing technology in geological hazard monitoring of karst ground collapse[J]. Urban Geotechnical Investigation & Surveying, 2021(4):174-178. doi: 10.3969/j.issn.1672-8262.2021.04.041
    [8]
    陈标典, 李喜, 李祖春, 等. 湖北武汉白沙洲隐伏岩溶区地质结构与岩溶塌陷分类[J]. 中国地质灾害与防治学报. 2021, 32(2): 43-52.

    CHEN Biaodian, LI Xi, LI Zuchun, et al. Types of geological structures and mechanism of karst collapses in Baishazhou, Wuhan City of Hubei Province [J]. The Chinese Journal of Geological Hazard and Control, 2021, 32(2): 43-52.
    [9]
    涂婧, 李慧娟, 彭慧, 魏熊, 贾龙. 武汉市江夏区大桥新区红旗村黏土盖层岩溶塌陷致塌模式分析[J]. 中国岩溶, 2018, 37(1):112-119.

    TU Jing, LI Huijuan, PENG Hui, WEI Xiong, JIA Long. Analysis on collapse model of the karst area covered by clay in Wuhan City Jiangxia district Hongqi village[J]. Carsologica Sinica, 2018, 37(1):112-119.
    [10]
    Li Gang, Tan Jinghe, An Ning. Analysis of the cause of karst land collapse in siding lead-zinc mining area[J]. Applied Mechanics and Materials, 2013, 368-370: 1606-1609.
    [11]
    郑晓明, 陈标典, 潘峰, 等. 武汉市江夏区武嘉高速桩基施工岩溶塌陷形成条件及机理研究[J]. 安全与环境工程. 2019, 26(2): 62-68+75.

    ZHENG Xiaoming, CHEN Biaodian, PAN Feng, et al. Formation conditions and mechanism of karst collapse during pile foundation construction of Wujia Highway in Jiangxia district, Wuhan[J]. Safety and Environmental Engineering. 2019, 26(2): 62-68+75.
    [12]
    Xu Zhimin, Sun Yajun, Gao Shang, Chen Hongying, Yao Minghao, Li Xin. Comprehensive exploration, safety evaluation and grouting of karst collapse columns in the Yangjian coalmine of the Shanxi Province, China[J]. Carbonates and Evaporites, 2021, 36(1): 1-12.
    [13]
    覃剑文, 宋光啸, 潘光明. 城区复杂环境岩溶地面塌陷灾害成因与致灾规律研究: 以贵港市北环新村岩溶地面塌陷灾害为例[J]. 中国岩溶, 2021, 40(2):230-237.

    QIN Jianwen, SONG Guangxiao, PAN Guangming. Cause and law of karst collapse in the urban complex environment: An example of Beihuanxincun, Guigang City[J]. Carsologica Sinica, 2021, 40(2):230-237.
    [14]
    吴远斌, 殷仁朝, 雷明堂, 戴建玲, 贾龙, 潘宗源, 马骁, 周富彪. 重庆中梁山地区隧道工程影响下岩溶塌陷形成演化模式及防治对策[J]. 中国岩溶, 2021, 40(2):246-252.

    WU Yuanbin, YIN Renchao, LEI Mingtang, DAI Jianling, JIA Long, PAN Zongyuan, MA Xiao, ZHOU Fubiao. Triggering factors and prevention-control countermeasures of karst collapses caused by tunnel construction in the Zhongliangshan area, Chongqing[J]. Carsologica Sinica, 2021, 40(2):246-252.
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