【摘要】：鄂爾多斯盆地賦存豐富的煤炭資源,但受成巖過程及后期構(gòu)造影響,侏羅系煤層頂板砂巖裂隙-孔隙水分布與賦存具有不均勻性,對(duì)回采過程產(chǎn)生一定的威脅。為此,研究其水文地質(zhì)特征、評(píng)價(jià)其疏放性及模擬回采過程中滲流場(chǎng)變化特征對(duì)礦井水害防治具有一定的指導(dǎo)意義。 本文在查閱國(guó)內(nèi)外相關(guān)文獻(xiàn)的基礎(chǔ)上,以東勝礦區(qū)的泊江海子礦為例,系統(tǒng)分析了地質(zhì)及水文地質(zhì)條件,重點(diǎn)研究了113101首采面3-1煤層頂板侏羅系中統(tǒng)含水層在疏放下條件下的水量、水位動(dòng)態(tài)變化特征,并建立了水文地質(zhì)概念模型和孔隙-裂隙三維非穩(wěn)定流數(shù)學(xué)模型,經(jīng)識(shí)別和驗(yàn)證后,獲得了研究區(qū)的水文地質(zhì)參數(shù)。利用上述模型,模擬首采面在回采過程中的侏羅系中統(tǒng)地下水位下降形成疏干漏斗的演化過程,并間接計(jì)算了涌水量,經(jīng)與“大井法”對(duì)比發(fā)現(xiàn)兩種預(yù)測(cè)結(jié)果較為接近。 此外,從含水層地下水位、水量隨時(shí)間變化角度評(píng)價(jià)工作面疏放水效果,并采用檢驗(yàn)單孔出水量進(jìn)行驗(yàn)證,同時(shí)利用流量變化率及疏放率評(píng)價(jià)局部疏放效果,可看出顯著的疏放水效果減輕了工作面回采時(shí)受到的水害威脅的壓力,因而具有十分重要的現(xiàn)實(shí)意義。
[Abstract]:There are abundant coal resources in Ordos Basin, but under the influence of diagenetic process and late stage structure, the distribution and occurrence of fracture-pore water in Jurassic coal seam roof sandstone are not uniform, which threaten the mining process to a certain extent. Therefore, the study of its hydrogeological characteristics, the evaluation of its sparsity and the change characteristics of seepage field in the process of simulated recovery are of guiding significance to the prevention and control of mine water hazards. Taking Bojiang Haizi Mine in Dongsheng Mining area as an example, the geological and hydrogeological conditions are systematically analyzed on the basis of consulting relevant literatures at home and abroad. The dynamic variation characteristics of water volume and water level in the middle Jurassic aquifer under the condition of sparse setting are studied in this paper, and the hydrogeological conceptual model and the mathematical model of pore-fracture three-dimensional unsteady flow are established. After identification and verification, the hydrogeological parameters of the study area are obtained. Using the above-mentioned model, the evolution process of the dewatering funnel formed by the drop of groundwater level in the middle Jurassic system during the recovery of the first mining face is simulated, and the water inflow is indirectly calculated. The comparison between the two prediction results and the "large well method" shows that the two kinds of prediction results are close to each other. In addition, the drainage effect of working face is evaluated from the point of view of groundwater level and water volume changing with time, and verified by checking the single hole water output, and the local drainage effect is evaluated by using the rate of change of discharge and the rate of drainage. It can be seen that the obvious effect of drainage can reduce the pressure of water damage in face mining, so it has very important practical significance.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P641.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 馬瑞杰;趙宇琦;張靜;黃平;;基巖三維流數(shù)學(xué)模型求解的廣義差分法及應(yīng)用[J];吉林大學(xué)學(xué)報(bào)(地球科學(xué)版);2009年05期

2 賈金生,田冰,劉昌明;Visual MODFLOW在地下水模擬中的應(yīng)用——以河北省欒城縣為例[J];河北農(nóng)業(yè)大學(xué)學(xué)報(bào);2003年02期

3 王秀艷,劉長(zhǎng)禮;對(duì)粘性土孔隙水滲流規(guī)律本質(zhì)的新認(rèn)識(shí)[J];地球?qū)W報(bào);2003年01期

4 郭曉東;田輝;張梅桂;朱威;崔健;;我國(guó)地下水?dāng)?shù)值模擬軟件應(yīng)用進(jìn)展[J];地下水;2010年04期

5 趙俊峰;劉池洋;喻林;王曉梅;;鄂爾多斯盆地中生代沉積和堆積中心遷移及其地質(zhì)意義[J];地質(zhì)學(xué)報(bào);2008年04期

6 張幼寬;;裂隙-巖溶含水層雙重介質(zhì)滲流模型及其里茲有限元解[J];工程勘察;1983年04期

7 李宏卿;吳瓊;李宏罡;李緒謙;;Visual Modflow在地下水資源評(píng)價(jià)中的應(yīng)用[J];工程勘察;2005年03期

8 李平;盧文喜;馬洪云;楊忠平;;Visual MODFLOW在地下水?dāng)?shù)值模擬中的應(yīng)用——以公主嶺市黃龍工業(yè)園水源地為例[J];工程勘察;2006年03期

9 薛禹群;;中國(guó)地下水?dāng)?shù)值模擬的現(xiàn)狀與展望[J];高校地質(zhì)學(xué)報(bào);2010年01期

10 鄭紅梅;劉明柱;;Visual modflow在天津市地下水?dāng)?shù)值模擬中的應(yīng)用[J];華北水利水電學(xué)院學(xué)報(bào);2007年02期

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