【摘要】：為定量闡述采煤導(dǎo)水裂隙帶發(fā)育對(duì)潛水含水層的影響,在分析采煤導(dǎo)水裂隙帶發(fā)育形成機(jī)理的基礎(chǔ)上,依據(jù)采煤導(dǎo)水裂隙帶發(fā)育對(duì)潛水含水層的影響進(jìn)行分類(lèi)研究,按照對(duì)潛水水位影響的程度分為兩類(lèi)模式�；谶@兩種分類(lèi)模式,以錦界礦區(qū)為研究對(duì)象,建立考慮導(dǎo)水裂隙帶發(fā)育的地下水?dāng)?shù)值模擬模型,利用大量實(shí)測(cè)水位反演出導(dǎo)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(dǎo)水裂隙帶發(fā)育對(duì)潛水含水層的影響。通過(guò)構(gòu)建的地下水?dāng)?shù)值模型計(jì)算表明,在分類(lèi)模式二條件下,由于導(dǎo)水裂隙帶導(dǎo)通潛水關(guān)鍵隔水層構(gòu)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(kāi)采前10年最大降深值28 m,降深大于20 m的影響嚴(yán)重區(qū)域面積約為2.56 km~2,開(kāi)采后20年,潛水位最大降深達(dá)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(xué)研究院;
【基金】：黃河水利科學(xué)研究院基本科研業(yè)務(wù)費(fèi)專(zhuān)項(xiàng)(HKY-JBYW-2016-40)
【分類(lèi)號(hào)】：TD745

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本文編號(hào)：2479202