靳德武, 段建华, 李连崇, 等. 2021. 基于微震的底板采动裂隙扩展及导水通道识别技术研究[J]. 工程地质学报, 29(4): 962-971. doi: 10.13544/j.cnki.jeg.2021-0330.
    引用本文: 靳德武, 段建华, 李连崇, 等. 2021. 基于微震的底板采动裂隙扩展及导水通道识别技术研究[J]. 工程地质学报, 29(4): 962-971. doi: 10.13544/j.cnki.jeg.2021-0330.
    Jin Dewu, Duan Jianhua, Li Lianchong, et al. 2021. Microseismicity based research for mining induced fracture propagation and water pathway identification technology of floor[J]. Journal of Engineering Geology, 29(4): 962-971. doi: 10.13544/j.cnki.jeg.2021-0330.
    Citation: Jin Dewu, Duan Jianhua, Li Lianchong, et al. 2021. Microseismicity based research for mining induced fracture propagation and water pathway identification technology of floor[J]. Journal of Engineering Geology, 29(4): 962-971. doi: 10.13544/j.cnki.jeg.2021-0330.

    基于微震的底板采动裂隙扩展及导水通道识别技术研究

    MICROSEISMICITY BASED RESEARCH FOR MINING INDUCED FRACTURE PROPAGATION AND WATER PATHWAY IDENTIFICATION TECHNOLOGY OF FLOOR

    • 摘要: 华北型煤田开采面临奥陶系石灰岩岩溶富水性强、水压高、地质构造复杂、隔水层薄等问题, 防治水工作面临巨大挑战, 导水通道识别是底板水害防治的关键问题。论文结合微震监测原理, 提出基于微震能量密度及岩层破裂连通度反演导水通道的识别方法, 以河北葛泉矿东井11916工作面底板突水监测工程为背景, 应用上述基于震源参数的底板导水通道识别技术, 通过连通路径反演得到11916工作面内陷落柱区域存在1~3条主导裂隙, 通过视电阻率监测数据验证了导水通道的存在。结果表明, 以微震能量密度及连通度表征底板岩层采动裂隙的导通性是可行性的;研究成果为推动微震监测技术在底板水害防治中的应用提供了一条新途径, 同时, 为提升底板突水监测预警水平奠定了重要基础。

       

      Abstract: The coal mining in North China type coalfield is faced with the problems of high water yield, high water pressure, complex geological structure, thin aquifuge and so on.Water disaster control faces great challenges.The identification of flowing pathway is the key problem of floor water disaster prevention.Based on the principle of microseismic monitoring, the identification method of water diversion pathway is put forward based on microseismic energy density and rock connectivity.Taking the floor water inrush monitoring project of the panel 11916 in East well of Gequan mine, Hebei province as the background, the proposed identification technology is applied.There are 1~3 dominant fissures in the collapse column area of the panel 11916 through inverting the connected flowing pathway.The fissures are verified with apparent resistivity monitoring data.The results show that, the method of characterizing the conductivity of mining induced fractures in floor strata is feasible using microseismic energy density and connectivity.This study provides a new way to promote the application of microseismic monitoring technology in floor water disaster prevention, and lays an important foundation for improving the level of floor water inrush monitoring and early warning.

       

    /

    返回文章
    返回