Advance Search
LI Ang,LI Yuanmou,LIU Chaoyang,et al. Water inrush mechanism and engineering application of concealed collapse column in coal seam floor[J]. Coal Science and Technology,2024,52(S2):142−152. DOI: 10.12438/cst.2022-1364
Citation: LI Ang,LI Yuanmou,LIU Chaoyang,et al. Water inrush mechanism and engineering application of concealed collapse column in coal seam floor[J]. Coal Science and Technology,2024,52(S2):142−152. DOI: 10.12438/cst.2022-1364

Water inrush mechanism and engineering application of concealed collapse column in coal seam floor

More Information
  • Received Date: August 18, 2022
  • Available Online: January 17, 2025
  • Concealed collapse column in North China Coalfield is difficult to explore, easy to water inrush, hidden dangers, is a typical representative of coal mine safety hazards. Taking the hidden collapse column under the floor of 1501 working face in Shanyang Coal Mine of Chenghe Mining Area as the engineering geological background, according to the water-bearing ( water-conducting ) characteristics of the collapse column, the water inrush accident is divided into two modes : overall shear failure and tip splitting failure. Combined with higher rock mechanics and fracture mechanics, the hydraulic model of water inrush is established respectively. Through the critical equilibrium condition and fracture criterion, the analytical solution of the critical water pressure that the floor aquifuge can resist and the safety threshold of the thickness of the aquifuge are theoretically derived.The results show that the critical water inrush pressure consists of two parts, namely, the water pressure value of the floor itself and the water pressure value of the surrounding rock. The critical water inrush pressure is positively correlated with the thickness of key strata, and decreases first and then increases with the top width of collapse column. When the width of collapse column top is 11.2 m, the limit water pressure is mainly controlled by the thickness of effective aquiclude when it is less than this value, and the horizontal stress of surrounding rock has a great influence on the limit water pressure when it is greater than this value. The fissure extension length around collapse column is positively correlated with water pressure and negatively correlated with overburden pressure. The collapse column axis angle between 60° and 90° is more likely to induce flood disaster. The research results are applied to the risk assessment of the floor of 1501 working face. The theoretical analysis shows that the critical water inrush pressure of the floor under the influence of mining disturbance is 0.95 MPa, which is not enough to resist the pressure of the Ordovician limestone confined water pressure of 1.2 MPa, and the growth and development of secondary cracks around the collapse column after mining threaten the stability of the water isolation at the top of the collapse column. According to the suspected cavity inside the collapse column, the treatment method of ‘water plugging + double liquid grouting’ was scientifically constructed. After treatment, the water inflow of the working face was reduced from 65 m3/h to 0.3 m3/h, and the working face was successfully mined.

  • [1]
    魏久传,肖乐乐,牛超,等. 2001—2013年中国矿井水害事故相关性因素特征分析[J]. 中国科技论文,2015,10(3):336−341,369. doi: 10.3969/j.issn.2095-2783.2015.03.019

    WEI Jiuchuan,XIAO Lele,NIU Chao,et al. Characteristics analysis of the correlation factors of China mine water hazard accidents in 2001-2013[J]. China Sciencepaper,2015,10(3):336−341,369. doi: 10.3969/j.issn.2095-2783.2015.03.019
    [2]
    许光泉,张海涛,周继生,等. 华北煤田岩溶陷落柱及其突水研究综述及展望[J]. 中国岩溶,2022,41(2):259−275. doi: 10.11932/karst20220207

    XU Guangquan,ZHANG Haitao,ZHOU Jisheng,et al. Study and prospect of Karst collapse columns and their water inrush in the coalfield of North China[J]. Carsologica Sinica,2022,41(2):259−275. doi: 10.11932/karst20220207
    [3]
    安羽枫. 承压水上含隐伏陷落柱构造底板突水致灾机理研究[D]. 青岛:山东科技大学,2019.

    AN Yufeng. Study on disaster-causing mechanism of water inrush from structural floor with concealed collapse column on confined water[D]. Qingdao:Shandong University of Science and Technology,2019.
    [4]
    景国勋,秦瑞琪. 2011—2020年我国煤矿水害事故相关因素特征分析[J]. 安全与环境学报,2022,22(4):2297−2304.

    JING Guoxun,QIN Ruiqi. Analysis on the characteristics of correlative factors in coal mine water disasters from 2011 to 2020[J]. Journal of Safety and Environment,2022,22(4):2297−2304.
    [5]
    吴国庆,马彦龙. 地质透明化工作面内多种异常体的槽波解释方法研究[J]. 煤炭科学技术,2023,51(5):149−160.

    WU Guoqing,MA Yanlong. Research on the interpretation method of channel waves for various abnormal bodies in geologically transparent working faces[J]. Coal Science and Technology,2023,51(5):149−160.
    [6]
    尹尚先,武强,王尚旭. 北方岩溶陷落柱的充水特征及水文地质模型[J]. 岩石力学与工程学报,2005,24(1):77−82. doi: 10.3321/j.issn:1000-6915.2005.01.013

    YIN Shangxian,WU Qiang,WANG Shangxu. Water-bearing characteristics and hydro-geological models of karstic collapse columns in North China[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(1):77−82. doi: 10.3321/j.issn:1000-6915.2005.01.013
    [7]
    郝兵元,张玉江,戚庭野,等. 综采面过陷落柱采动应力与柱体应力相互影响模拟研究[J]. 采矿与安全工程学报,2015,32(2):192−198.

    HAO Bingyuan,ZHANG Yujiang,QI Tingye,et al. Simulation of interaction between mine-induced stress and stress of collapse column with fully-mechanized working face advancing[J]. Journal of Mining & Safety Engineering,2015,32(2):192−198.
    [8]
    李振华,李见波,贺志宏. 双柳煤矿陷落柱发育特征及突水危险性分析[J]. 采矿与安全工程学报,2014,31(1):84−89.

    LI Zhenhua,LI Jianbo,HE Zhihong. Analysis on development characteristics of Karst collapse column and water inrush risk in Shuangliu coal mine[J]. Journal of Mining & Safety Engineering,2014,31(1):84−89.
    [9]
    刘港,张勃阳,吴琳琳. 基于板壳理论的隐伏陷落柱突水煤层底板破断机理研究[J]. 河南理工大学学报(自然科学版),2022,41(1):23−28. doi: 10.3969/j.issn.1673-9787.2022.1.jzgxyxb202201004

    LIU Gang,ZHANG Boyang,WU Linlin. Study on the mechanism of floor breakage after water-inrush from the hidden collapse column based on the plate and shell theory[J]. Journal of Henan Polytechnic University (Natural Science),2022,41(1):23−28. doi: 10.3969/j.issn.1673-9787.2022.1.jzgxyxb202201004
    [10]
    尹尚先,连会青,刘德民,等. 华北型煤田岩溶陷落柱研究70年:成因·机理·防治[J]. 煤炭科学技术,2019,47(11):1−29.

    YIN Shangxian,LIAN Huiqing,LIU Demin,et al. 70 years of investigation on Karst collapse column in North China coalfield:Cause of origin,mechanism and prevention[J]. Coal Science and Technology,2019,47(11):1−29.
    [11]
    赵家巍,周宏伟,薛东杰,等. 深部承压水上含隐伏构造煤层底板渗流路径扩展规律[J]. 煤炭学报,2019,44(6):1836−1845.

    ZHAO Jiawei,ZHOU Hongwei,XUE Dongjie,et al. Expansion law of seepage path in the concealed structural floor of coal seam in deep confined water[J]. Journal of China Coal Society,2019,44(6):1836−1845.
    [12]
    尹万才,施龙青,卜昌森. 华北煤田陷落柱发育的几何特征[J]. 山东科技大学学报(自然科学版),2004,23(2):23−25. doi: 10.3969/j.issn.1672-3767.2004.02.007

    YIN Wancai,SHI Longqing,BU Changsen. Geometrical characteristics of sunken column in North China coalfield[J]. Journal of Shandong University of Science and Technology (Natural Science),2004,23(2):23−25. doi: 10.3969/j.issn.1672-3767.2004.02.007
    [13]
    TIAN Chenglin,YANG Xuelin,SUN Haitao,et al. Experimental study on the overburden movement and stress evolution in multi-seam mining with residual pillars[J]. Energy Science & Engineering,2019,7(6):3095−3110.
    [14]
    姚邦华,王连成,魏建平,等. 煤矿陷落柱突水的变形-渗流-冲蚀耦合模型及应用[J]. 煤炭学报,2018,43(7):2007−2013.

    YAO Banghua,WANG Liancheng,WEI Jianping,et al. A deformation-seepage-erosion coupling model for water outburst of Karst collapse pillar and its application[J]. Journal of China Coal Society,2018,43(7):2007−2013.
    [15]
    DAWSON E. Trends in Rock Mechanics[M]. Reston Va American Society of Civil Engineers,Reston,Virginia,2000,2(2):115−126.
    [16]
    赵应,杨丹. 应用常微分方程求解泰沙基理论及泰沙基理论的应用[J]. 科学技术创新,2019(11):1−2. doi: 10.3969/j.issn.1673-1328.2019.11.002

    ZHAO Ying,YANG Dan. Applying ordinary differential equations to solve Taishaki theory and its application[J]. Scientific and Technological Innovation,2019(11):1−2. doi: 10.3969/j.issn.1673-1328.2019.11.002
    [17]
    陈忠辉,胡正平,李辉,等. 煤矿隐伏断层突水的断裂力学模型及力学判据[J]. 中国矿业大学学报,2011,40(5):673−677.

    CHEN Zhonghui,HU Zhengping,LI Hui,et al. Fracture mechanical model and criteria of insidious fault water inrush in coal mines[J]. Journal of China University of Mining & Technology,2011,40(5):673−677.
    [18]
    RECHO N. Fracture mechanics and crack growth[M]. London:ISTE Ltd. ,2012.
    [19]
    中国航空研究院. 应力强度因子手册[M]. 北京:科学出版社,1981.
    [20]
    李昂,牟谦,刘朝阳,等. 渭北煤田多因素影响下底板扰动破坏深度研究[J]. 煤炭工程,2020,52(5):138−143.

    LI Ang,MU Qian,LIU Chaoyang,et al. Fitting analysis and verification of floor disturbance failure depth under the influence of multiple factors in Weibei coalfield[J]. Coal Engineering,2020,52(5):138−143.
    [21]
    王峰. 澄合矿区安阳煤矿1508工作面K2灰岩治理成效研究[J]. 科技与创新,2019(11):102−103.

    WANG Feng. Effect of K2 limestone treatment in No. 1508 working face of Anyang coal mine in Chenghe mining area[J]. Science and Technology & Innovation,2019(11):102−103.
    [22]
    李昂. 带压开采下底板渗流与应力耦合破坏突水机理及其工程应用[D]. 西安:西安科技大学,2012.

    LI Ang. Water inrush mechanism and engineering application of coupling failure of floor seepage and stress under pressure mining[D]. Xi’an:Xi’an University of Science and Technology,2012.
    [23]
    满轲,刘晓丽,宋志飞,等. 岩石静态与动态断裂韧性的宏细观试验[J]. 清华大学学报(自然科学版),2021,61(8):799−808.

    MAN Ke,LIU Xiaoli,SONG Zhifei,et al. Macro-micro experimental study of rock static and dynamic fracture toughness[J]. Journal of Tsinghua University (Science and Technology),2021,61(8):799−808.
    [24]
    刘建功,赵庆彪,白忠胜,等. 东庞矿陷落柱特大突水灾害快速治理[J]. 煤炭科学技术,2005,33(5):4−7. doi: 10.3969/j.issn.0253-2336.2005.05.002

    LIU Jiangong,ZHAO Qingbiao,BAI Zhongsheng,et al. Rapid holding and control for special large water inrush from sink hole in Dongpang Mine[J]. Coal Science and Technology,2005,33(5):4−7. doi: 10.3969/j.issn.0253-2336.2005.05.002
    [25]
    ZHANG Zizheng,DENG Min,BAI Jianbiao,et al. Stability control of gob-side entry retained under the gob with close distance coal seams[J]. International Journal of Mining Science and Technology,2021,31(2):321−332. doi: 10.1016/j.ijmst.2020.11.002
  • Related Articles

    [1]YIN Xiwen, YU Qiuge, ZHANG Yujun, GUAN Yongqiang, FAN Zhenli. Mechanism and whole cycle control technology of water inrush from coal seam floor on condition of hard roof and thick waterproof layer[J]. COAL SCIENCE AND TECHNOLOGY, 2023, 51(S1): 318-327. DOI: 10.13199/j.cnki.cst.2022-2032
    [2]ZHANG Yujun, ZHANG Zhiwei, XIAO Jie, LI Youwei, YU Qiuge. Study on mining water inrush mechanism of buried fault under coal seam floor above confined water body[J]. COAL SCIENCE AND TECHNOLOGY, 2023, 51(2): 283-291. DOI: 10.13199/j.cnki.cst.2022-1698
    [3]DING Tongfu, WANG Minhua, LIU Mancai, ZHU Changhuai, WEN Dongming, CHEN Xiaolei. Technology of accurately constructing collapse column water plugging plug in laminated multi branch horizontal wells[J]. COAL SCIENCE AND TECHNOLOGY, 2022, 50(7): 244-251.
    [4]ZHANG Fengda, SHEN Baohong. PSO_SVM prediction model for evaluating water inrush risk from deep coal seam floor[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (7).
    [5]NIU Guangliang. Study on sectional grouting and sealing method of upward water inrush hole in underground mine[J]. COAL SCIENCE AND TECHNOLOGY, 2018, (3).
    [6]Zhai Xiaorong Wu Jiwen Zhang Hongmei Shen Shuhao Tian Nuocheng, . Study on water-inrush mechanism of mining floor of deep coal seam in mine shaft based on fluid-solid coupling[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (6).
    [7]Zhao Qingbiao Jiang Qinming Gao Chunfang, . Study on floor water inrush mechanism of deep seam in Hanxing Mining Area[J]. COAL SCIENCE AND TECHNOLOGY, 2016, (3).
    [8]ZHANG Yong-jun YANG Deng-feng CHEN Guan-ping LI Qian-long, . Numerical Simulation Research on Activation Water Inrush Mechanism of Mining Floor with Concealed Minor Faults[J]. COAL SCIENCE AND TECHNOLOGY, 2014, (10).
    [9]Study on Quantitative Prediction Evaluation of Water Inrush from Seam Floor[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (10).
    [10]Discussion on Water Inrush Coefficient Method Applied to Predict Water Inrush Danger of Seam Floor Based on Gaojiata Mine as Example[J]. COAL SCIENCE AND TECHNOLOGY, 2011, (7).

Catalog

    Article views (28) PDF downloads (6) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return