【摘要】：為定量闡述采煤導水裂隙帶發(fā)育對潛水含水層的影響,在分析采煤導水裂隙帶發(fā)育形成機理的基礎上,依據(jù)采煤導水裂隙帶發(fā)育對潛水含水層的影響進行分類研究,按照對潛水水位影響的程度分為兩類模式�；谶@兩種分類模式,以錦界礦區(qū)為研究對象,建立考慮導水裂隙帶發(fā)育的地下水數(shù)值模擬模型,利用大量實測水位反演出導水裂隙帶影響下各分區(qū)垂向滲透系數(shù)值變化序列,以此反映導水裂隙帶發(fā)育對潛水含水層的影響。通過構建的地下水數(shù)值模型計算表明,在分類模式二條件下,由于導水裂隙帶導通潛水關鍵隔水層構成垂向滲漏通道,隔水層垂向滲透系數(shù)顯著增大,潛水水位形成大范圍地下水降落漏斗。開采前10年最大降深值28 m,降深大于20 m的影響嚴重區(qū)域面積約為2.56 km~2,開采后20年,潛水位最大降深達到32 m。
[Abstract]:In order to quantitatively explain the influence of the development of coal mining water diversion fracture zone on the submersible aquifer, on the basis of analyzing the formation mechanism of the coal mining water diversion fracture zone, and according to the influence of the development of the coal mining water diversion fracture zone on the diving aquifer, this paper classifies and studies the influence of the development of the coal mining water diversion fracture zone on the submersible aquifer. According to the degree of influence on diving water level, there are two types of models. Based on these two classification models, taking Jinjie mining area as the research object, a numerical simulation model of groundwater considering the development of water diversion fracture zone is established, and the numerical variation sequence of vertical permeability coefficient under the influence of water conductivity fracture zone is deduced by using a large number of measured water levels. In order to reflect the influence of the development of water diversion fracture zone on submersible aquifers. The calculation of the numerical model of groundwater shows that under the condition of classification model two, the vertical permeability coefficient of the water insulation layer increases significantly due to the vertical leakage channel formed by the key water insulation layer of the diversion fracture zone. The diving water level forms a wide range of groundwater drop funnel. In the 10 years before mining, the maximum depth drop is 28 m, and the affected area with depth greater than 20 m is about 2.56 km~2, 20 years after mining, and the maximum depth of submersible water level reaches 32 m.
【作者單位】： 黃河水利科學研究院;
【基金】：黃河水利科學研究院基本科研業(yè)務費專項(HKY-JBYW-2016-40)
【分類號】：TD745

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