本文選題：數(shù)值模擬 + 構(gòu)造控水�。� 參考：《華北理工大學(xué)》2017年碩士論文

【摘要】：煤礦開采對(duì)地下水的影響是一個(gè)動(dòng)態(tài)且持續(xù)的過程,打破了地下水原有的補(bǔ)徑排平衡狀態(tài),使地下水系統(tǒng)變得日益復(fù)雜。煤礦開采形成的采空區(qū)采掘深度不同、大小不同,其頂板的上覆巖層因失去支撐而依次出現(xiàn)冒落、塌陷和斷裂裂隙,形成導(dǎo)水裂隙帶,致使上覆含水層地下水向下部轉(zhuǎn)移,導(dǎo)致礦井涌水,威脅礦井的安全生產(chǎn)。深入分析礦井水文地質(zhì)條件,預(yù)測(cè)礦井涌水量對(duì)于防止礦井突水、淹井等礦山惡性事故、降低生產(chǎn)成本、保障礦山安全生產(chǎn)具有十分重要意義。以開灤東歡坨礦北二采區(qū)為研究區(qū)域,系統(tǒng)收集了礦井勘查與生產(chǎn)勘探獲得的地質(zhì)與水文地質(zhì)資料,結(jié)合現(xiàn)場(chǎng)調(diào)查,全面分析了北二采區(qū)5煤層開采充水水文地質(zhì)條件。通過對(duì)抽水試驗(yàn)數(shù)據(jù)、鉆孔巖性與厚度、水位、涌水量、地質(zhì)構(gòu)造條件、采動(dòng)破壞影響等綜合研究,掌握了煤5頂板0~100m充水含水層的補(bǔ)給與邊界條件、含水層非均勻分布儲(chǔ)導(dǎo)水性、8煤層開采導(dǎo)水裂縫帶含水層影響等規(guī)律。運(yùn)用Visual Modflow數(shù)值模擬軟件,建立了北二采區(qū)主要頂板充水含水層地下水?dāng)?shù)值模型,模擬了北二采區(qū)開采前地下水在長(zhǎng)期的流動(dòng)中形成的穩(wěn)定流狀態(tài),獲得東歡坨礦開懫前的初始水位與水流場(chǎng)。采用排水溝代替多個(gè)抽水井的方法實(shí)現(xiàn)了礦井采面排水,模擬了北二采區(qū)開采期間非穩(wěn)定流地下水水位變化情況。依據(jù)煤5頂板長(zhǎng)觀孔東觀27孔和東觀39孔的觀測(cè)數(shù)據(jù)對(duì)模型進(jìn)行了擬合與檢驗(yàn),得出兩個(gè)長(zhǎng)觀孔的歷時(shí)擬合曲線和模擬區(qū)的滲透系數(shù)分區(qū)結(jié)果。利用經(jīng)過識(shí)別驗(yàn)證的模型對(duì)5煤層開采工作面涌水量進(jìn)行了模擬預(yù)測(cè)。結(jié)果表明:北二采區(qū)煤5以上0~100m強(qiáng)含水層為5、8煤層開采主要直接充水含水層,單位涌水量0.016~1.507L/s.m,滲透系數(shù)0.369~10.492m/d,裂隙非常發(fā)育,富水性強(qiáng),且強(qiáng)烈不均。接受沖積層補(bǔ)給,水位、涌水量受構(gòu)造影響。構(gòu)造裂隙等導(dǎo)致含水層滲透系數(shù)非均勻性分布,形成六個(gè)分區(qū)。通過調(diào)整參數(shù),東觀27孔和東觀39孔水位擬合較好,模擬結(jié)果顯示5煤層開采預(yù)測(cè)最大涌水量5852.97m3/d,最小涌水量為1352.1 m3/d。
[Abstract]:The influence of coal mining on groundwater is a dynamic and continuous process, which breaks the original equilibrium state of recharge and discharge of groundwater, and makes the groundwater system become more and more complex. The mining depth of the goaf formed by coal mining is different and the magnitude is different. The overlying strata of the roof appear caving, collapsing and fracture fissures as a result of the loss of support, forming a water-conducting fissure zone, which causes the groundwater of the overlying aquifer to be transferred to the lower part of the overlying aquifer. Causes the mine to gush the water, threatens the mine safe production. Further analysis of mine hydrogeological conditions and prediction of mine water discharge are of great significance in preventing mine water inrush, flooding and other malignant accidents in mines, reducing production costs and ensuring safe production in mines. Taking Bei No. 2 mining area of Donghuantuo Coal Mine in Kailuan as the research area, the geological and hydrogeological data obtained from mine exploration and production exploration are collected systematically. Combined with field investigation, the hydrogeological conditions of water filling in coal seam No. 5 of Bei No. 2 Mining area are comprehensively analyzed. Based on the comprehensive study of pumping test data, borehole lithology and thickness, water level, water inflow, geological structural conditions and the influence of mining failure, the recharge and boundary conditions of 100 m water-filled aquifer with coal 5 roof are mastered. The influence of aquifer on water conductivity fracture zone in non-uniform distribution of aquifer is studied. By using Visual Modflow software, the groundwater numerical model of the main roof filling aquifer in Bei No.2 mining area is established, and the steady flow state of groundwater formed during the long term flow before exploitation in Bei er mining area is simulated. The initial water level and water flow field of Donghuantuo Mine before opening are obtained. The drainage of mining face is realized by using drainage ditch instead of several pumping wells, and the variation of groundwater level of unsteady flow during mining in Bei No.2 mining area is simulated. According to the observation data of 27 holes and 39 holes in the east of coal roof, the model was fitted and tested, and the diachronic fitting curves of the two holes and the partition results of permeability coefficient in the simulated area were obtained. The model verified by identification is used to simulate and predict the water inflow of 5 coal seam mining face. The results show that the strong water-filling aquifer of coal above 5 ~ 100 m in Bei No. 2 mining area is the main direct water-filled aquifer in coal seam No. 5. The unit water inflow is 0.016 ~ 1.507L / s 路m, the permeability coefficient is 0.369 ~ 10.492 m / d, the fissure is very developed, the water-rich is strong, and the water content is strong and unevenness. Accept alluvial bed recharge, water level, gushing water is affected by structure. Structural fissures lead to heterogeneous distribution of aquifer permeability coefficient, forming six subzones. By adjusting the parameters, the water level of Dongguan 27 well and Dongguan 39 hole is fitted well. The simulation results show that the predicted maximum water inflow of coal seam 5 is 5852.97 m3 / d, and the minimum water inflow is 1352.1 m3 / d.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD745;P641

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鄭燕;馬亞杰;劉金國(guó);李瑛;張輝;馬愛軍;王東;;煤礦充水含水層Q—S曲線類型判別與對(duì)比[J];礦業(yè)安全與環(huán)保;2016年05期

2 劉基;高敏;;母杜柴登礦首采工作面疏干水量計(jì)算研究[J];煤炭工程;2015年06期

3 馮玉;馬亞杰;王東;李玉忠;;隱伏向斜揚(yáng)起端構(gòu)造復(fù)雜區(qū)回采工作面防治水技術(shù)[J];煤炭科學(xué)技術(shù);2015年05期

4 楊志斌;呂漢江;;桌子山煤田構(gòu)造控水機(jī)理研究[J];地下水;2014年05期

5 羅林;李元林;李筑;;河南省太行山南脈找水規(guī)律分析探討[J];地下水;2014年05期

6 郝文霞;;張家口市壩下山區(qū)巖溶水的富集規(guī)律研究[J];地下水;2014年04期

7 邱康利;李旭;賀江輝;趙祥龍;;Visual MODFLOW在地下水?dāng)?shù)值模擬中的應(yīng)用[J];煤炭與化工;2014年06期

8 宋振騏;郝建;湯建泉;石永奎;;斷層突水預(yù)測(cè)控制理論研究[J];煤炭學(xué)報(bào);2013年09期

9 劉化光;;J_3含水層鉆孔單位涌水量換算[J];山東煤炭科技;2013年05期

10 武強(qiáng);崔芳鵬;趙蘇啟;劉守強(qiáng);曾一凡;谷亞威;;礦井水害類型劃分及主要特征分析[J];煤炭學(xué)報(bào);2013年04期

相關(guān)博士學(xué)位論文 前1條

1 喬偉;礦井深部裂隙巖溶富水規(guī)律及底板突水危險(xiǎn)性評(píng)價(jià)研究[D];中國(guó)礦業(yè)大學(xué);2011年

相關(guān)碩士學(xué)位論文 前8條

1 賀江輝;淮南煤田北部礦區(qū)構(gòu)造控水機(jī)理研究[D];安徽理工大學(xué);2015年

2 李治邦;黃巖匯煤礦開采對(duì)上覆含水層影響的數(shù)值模擬研究[D];太原理工大學(xué);2014年

3 紀(jì)媛媛;新疆三塘湖北煤田供水水文地質(zhì)詳查區(qū)地下水流數(shù)值模擬研究[D];新疆農(nóng)業(yè)大學(xué);2014年

4 �，|;寧夏金風(fēng)煤礦首采區(qū)煤層開采過程中地下水水動(dòng)力場(chǎng)的演化研究[D];吉林大學(xué);2014年

5 顏文珠;煤礦開采對(duì)地下水影響的數(shù)值模擬研究[D];山東科技大學(xué);2011年

6 胡艷卉;礦井地下水流場(chǎng)數(shù)值模擬及其應(yīng)用研究[D];山東科技大學(xué);2010年

7 徐德金;基于Visual Modflow煤層底板灰?guī)r水疏放性研究[D];安徽理工大學(xué);2009年

8 魏t熛，

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