采动作用下煤矿地下水流场的演变规律
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P641.4

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国家自然科学基金(41702264):基于裂隙介质渗流理论的煤层底板突水量的预测方法研究


Evolution Law of Groundwater Flow Field in Coal Mine under Mining Action
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    摘要:

    采动条件下含水层结构变化对地下水流场和地下水资源分布具有显著影响。以梨园河煤矿为例,在分析研究区水文地质条件的基础上,结合采动裂隙对含水层结构的破坏程度,采用数值模拟方法,预测分析了采煤20年后研究区不同含水层地下水流场动态特征。结果表明:松散岩类孔隙含水层流场基本保持不变,仅井田北部的导通区地下水位有所下降,局部形成降落漏斗,最大降深18m;碎屑岩类裂隙含水层受矿井排水影响,地下水位大幅降低,地下水流场变化明显,形成了以井田中部为中心的降落漏斗,最大降深106m。研究结果可为保护矿区地下水资源与制定防治水措施提供理论依据。

    Abstract:

    The change of aquifer structure under mining condition has a significantt impact on the groundwater flow field and the distribution of groundwater resources.Taking Liyuanhe coal mine as an example, based on the analysis of hydrogeological conditions in the study area, combined with the damage degree of mining fissures to aquifer structure, this paper uses numerical simulation method to predict and analyze the dynamic characteristics of groundwater flow field in different aquifers in the study area after 20 years of mining.The results show that: The flow field of unconsolidated rock pore aquifer remains basically unchanged, only the groundwater level in the north of the mine field decreases, and a depression funnel is formed locally with a maximum depth of 18m;The clastic rock fractured aquifer is affected by the drainage of the mine, the groundwater level is greatly reduced, and the groundwater flow field changes significantly, forming a falling funnel centered at the middle of the mine field, with a maximum depth of 106m.

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张耀文,张莉丽,宋颖霞,等. 采动作用下煤矿地下水流场的演变规律[J]. 科学技术与工程, 2021, 21(12): 4830-4837.
Zhang Yaowen, Zhang Lili, Song Yingxia, et al. Evolution Law of Groundwater Flow Field in Coal Mine under Mining Action[J]. Science Technology and Engineering,2021,21(12):4830-4837.

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  • 收稿日期:2020-09-26
  • 最后修改日期:2021-04-14
  • 录用日期:2020-12-21
  • 在线发布日期: 2021-05-17
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