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中文摘要：
为定量评价蒙陕矿区采煤对松散含水层影响程度，提出了通过预测导水裂缝带发育高度和地面沉陷值、应用地下水数值模拟技术、数值化处理地面沉陷和边界化处理导水裂缝带的技术手段，构建三维地下水影响评价的计算机模型，并引用案例定量评价了井田开发过程中不同导水裂缝带范围内和地面沉陷影响下松散含水层地下水资源变化特征。案例显示，水源地大量取水对松散含水层地下水流场影响突出，地面沉陷影响程度极小；由于采煤形成导水裂缝带距松散含水层底板较远，导水裂缝带影响程度较小。
英文摘要：
In order to quantitatively evaluate the mining impact degree on unconsolidated aqG uifer in ShaanxiGInner Mongolia mining area,the paper proposes to construct a 3D computer model of groundwater impact evaluation through predicting the development height of water flowing fractured zone and ground subsidence,using groundwater numerical simulation,ground subsidence numerical processing,boundary processing of the water flowing fractured zone,and through the cases,the paper quantitatively evaluates the changing characteristics of groundwater in unconsolidated aquifer in range of different water flow fractured zones and under the influence of ground subsidence during the coal mining.Cases show that large water withdrawal from water source has obvious impact on groundwater flow field in unconsolidated aquifer,and the ground subsidence has little impact;since the water flowing fractured zone resulted from coal mining is far away from the unconsolidated aquifer floor,so the water flowing fractured zone has smaller influence.
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North China Lower Coal Surrounding Rock Failure Characteristics Study Based on FLAC3D and Fiber Brag
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