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山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (3): 78-87.doi: 10.6040/j.issn.1672-3961.0.2021.451

• 土木工程 • 上一篇    下一篇

浅埋煤层开采诱发地下水渗流过程

李婧1,张伟俊2,李赟鹏1,冯春3,4,张一鸣1*   

  1. 1. 河北工业大学土木与交通学院, 天津 300401;2.山东建勘集团有限公司, 山东 济南 250031;3.中国科学院力学研究所, 北京 100190;4.中国科学院大学工程科学学院, 北京 100049
  • 出版日期:2023-06-20 发布日期:2023-07-07
  • 作者简介:李婧(1998— ),女,河北衡水人,硕士研究生,主要研究方向为岩土工程. E-mail:752721089@qq.com. *通信作者简介:张一鸣(1984— ),男,上海人,教授,博导,主要研究方向为岩土工程防灾减灾等. E-mail: yiming.zhang@hebut.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(51809069);国家重点研发计划项目(2018YFC1505504)

Groundwater seepage induced by shallow coal mining

LI Jing1, ZHANG Weijun2, LI Yunpeng1, FENG Chun3,4, ZHANG Yiming1*   

  1. 1.School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, China;
    2.Shandong Construction and Prospecting Group Co., Ltd., Jinan 250031, Shandong, China;
    3.Institute of Mechanics, Chinese Academy of Science, Beijing 100190, China;
    4.School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
  • Online:2023-06-20 Published:2023-07-07

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摘要： 针对榆神矿区覆岩层的红土层遇水展现出的裂隙张开-弥合效应,采用连续-非连续单元法(continuous-discontinuous element method, CDEM)研究表征黏性土层塑性变形特征的力学本构,对该地区黏土层中裂隙张开-弥合过程重现,并对浅层煤层开采诱发的水-力渗流过程展开分析。结果表明,红土层遇水膨胀,对周围土体产生挤压作用,部分裂缝会发生弥合现象,破裂度和导水裂隙带减少,土体体应变增大,整体位移上升,模拟结果的导水裂隙带高度与经验公式对比,相对误差为4%。与页岩水力压裂试验结果对比,裂缝发育面积、位置和厚度基本一致,验证了该模拟的有效性。

关键词: 连续-非连续单元法, 水-力耦合, 裂隙扩展, 裂隙弥合, 遇水膨胀

中图分类号: 

  • TU45
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