煤炭开采区水源地保护范围界定的数值模拟研究  

Numerical simulation study on thedefinition of water source area protection in coal mining area

作　　者：秦娜[1] 唐芳芳 胡君春 刘志刚 QIN Na;TANG Fang-fang;HU Jun-chun;LIU Zhi-gang(Shanxi Conservancy Technical Institute,Taiyuan 030032,Shanxi,China;Beijing Zhongshui Xinhua International Engineering Consulting Co.Ltd,Shanxi branch,Taiyuan 030024,China;Yunnan Coal Geological Exploration Institute,Kunming 650218,China;Shanxi agricultural university,Taiyuan 030031,China)

机构地区：[1]山西水利职业技术学院,山西太原030032 [2]北京中水新华国际工程咨询有限公司山西分公司,山西太原030024 [3]云南省煤炭地质勘查院,云南昆明650218 [4]山西农业大学,山西太原030031

出　　处：《地下水》2021年第6期91-94,共4页Ground water

摘　　要：对七元煤矿矿区内2个水源地及其保护区周边煤层进行开采,将会形成导通水源地取水含水层的导水裂隙带,矿井水疏排直接造成含水层地下水水位下降、水量减少等问题,为确保七元煤矿开采对水源井供水不造成影响,并尽可能地减少留设煤柱资源,应用Visual Modflow4.1软件建立三维水文地质渗流概念模型和数学模型,预测煤矿开采10 a、30 a、60 a对水源地的影响范围,并根据数值模拟结果合理设置出禁采区范围,即水源地保护范围为:尹灵芝水源井保护范围长420 m,宽300 m,面积为126000 m2;马首乡水源井保护范围为长220 m,宽160 m,面积为35200 m2,为同类煤矿区禁采区划定和水源井保护提供技术保障。Mining 2 water sources and surrounding coal seams in Qiyuan coal mine area,the will form a water-conduc⁃ting fissure zone in the water intake aquifer.The drainage of mine water directly causes the groundwater level of the aquifer to decrease and the quantity of water to decrease,In order to ensure that Qiyuan coal mining does not affect the water supply of water wells,and to minimize the retention of pillar resources,Application of Visual Modflow4.1 software to establish three-dimensional hydrogeological seepage conceptual model and mathematical model,Forecast the influence range of 10a,30a,60a coal mining on water source,and setting up reasonable range of forbidden mining area according to the numerical simula⁃tion results,namely water source protection scope.Yinlingzhi water source well protection range 420m long,300m wide,an area of 126000 square meters;the protection scope of the Mashouxiang water source well is 220m in length,160m in width and 35200 square meters in area,they provides technical support for the delineation of the forbidden mining areas and the pro⁃tection of the water source well in similar coal mine areas.

关 键 词：Modflow数值模拟 地质调查 煤炭开采 水源地 禁采区 

分 类 号：P641.2[天文地球—地质矿产勘探]