本文關鍵詞： Visual MODFLOW 地下水流數(shù)值模擬 尚志市 地下水資源評價　出處：《吉林大學》2015年碩士論文　論文類型：學位論文

【摘要】：黑龍江省尚志市同其他北方農(nóng)業(yè)地區(qū)一樣，淡水資源緊缺，水體出現(xiàn)污染和洪澇災害等危機，供需矛盾日益突出，直接影響當?shù)厣鐣�(wěn)定和經(jīng)濟發(fā)展。近年來，尚志市區(qū)生產(chǎn)生活用水一直依靠地表水和淺部地下水，由于經(jīng)濟發(fā)展和人口增長，城區(qū)需水量逐年增加，原有供水水源地已無法滿足開采需求，供水質(zhì)量也不同程度的有所下降，給供水安全帶來了影響。因此，本文對尚志市東北部地區(qū)進行地下水資源評價和研究，尋找良好的的地下水源，解決當?shù)氐墓┧畣栴}。 本文根據(jù)尚志市供水水文地質(zhì)詳查資料，分析研究區(qū)的第四系地質(zhì)特征、水文地質(zhì)特征，建立了水文地質(zhì)概念模型，對研究區(qū)進行了含水層概化、水力特征概化和邊界條件的概化。根據(jù)抽水試驗及地下水位動態(tài)資料，計算水文地質(zhì)參數(shù)，圈定富水地段，確定水源地開采區(qū)與開采目的層，對區(qū)內(nèi)地下水資源量、允許開采量進行計算，并對地下水資源進行評價。通過水質(zhì)化驗結(jié)果，對研究區(qū)進行生活用水評價和鍋爐用水評價。 本次模擬主要利用visual MODFLOW地下水流數(shù)值模擬軟件，建立水文地質(zhì)概念模型和數(shù)學模型，并對其進行求解，通過模型的識別和驗證，校驗模型建立的準確性。根據(jù)模型識別時段的地下水頭計算值與實測值擬合效果良好，說明含水層結(jié)構(gòu)、邊界條件的概化以及水文地質(zhì)參數(shù)的選取是合理的，該模型能夠真實地反映當?shù)氐乃牡刭|(zhì)條件。為進一步驗證模型建立的可靠性，在初始條件和邊界條件不變的條件下，降水資料采用當年實測資料進行驗證，結(jié)果顯示模型的擬合效果良好，即該模型能夠真實地反映當?shù)氐乃牡刭|(zhì)條件，可用于地下水位預測。根據(jù)用水統(tǒng)計結(jié)果和不同的水源地開采資源量，預測未來10年地下水流場的變化趨勢，并制定不同的開采方案。分析各方案未來10年地下水位平均降速、中心降深及降落漏斗面積變化情況，，分析地下水資源開發(fā)潛力，最終確定方案二為現(xiàn)狀條件下的最優(yōu)開采方案。因此，采用方案二的開采方式在研究區(qū)建立水源地。 根據(jù)地下水資源評價和地下水數(shù)值模擬預測結(jié)果，確定合理的開采方案，選定地下水開采開采靶區(qū)，對研究區(qū)地下水環(huán)境現(xiàn)狀進行預測與評價，建立衛(wèi)生防護帶，提出水源地保護方案。衛(wèi)生防護帶的建立，防止地下水資源遭受污染，減輕了對當?shù)厣鷳B(tài)環(huán)境的負面影響。
[Abstract]:Like other agricultural areas in northern Heilongjiang Province, Shangzhi City of Heilongjiang Province is short of fresh water resources, water pollution and flood disasters, and the contradiction between supply and demand is becoming more and more prominent, which directly affects local social stability and economic development in recent years. The production and living water in Shangzhi city has always depended on surface water and shallow groundwater. Due to the economic development and population growth, the urban water demand has increased year by year, and the original water supply source can not meet the demand of mining. The quality of water supply has also decreased to some extent, which has had an impact on the safety of water supply. Therefore, this paper evaluates and studies the groundwater resources in the northeast of Shangzhi City to find a good groundwater source. Solve the problem of local water supply. Based on the detailed investigation data of water supply hydrogeology in Shangzhi city, this paper analyzes the Quaternary geological characteristics and hydrogeological characteristics of the study area, establishes a hydrogeological conceptual model, and generalizes the aquifer in the study area. Based on pumping test and dynamic data of groundwater level, hydrogeological parameters are calculated, water-rich section is delineated, and mining area and target layer of water source are determined. The quantity of groundwater resources in the study area is calculated, and the groundwater resources are evaluated. Based on the results of water quality tests, the evaluation of domestic water and boiler water is carried out in the study area. This simulation mainly uses the visual MODFLOW groundwater numerical simulation software, establishes the hydrogeological concept model and the mathematical model, and carries on the solution to them, through the model identification and the confirmation. The accuracy of establishing the model is verified. According to the model identification period, the calculated value of groundwater head is fitted well with the measured value, which shows that the aquifer structure, the generalization of boundary conditions and the selection of hydrogeological parameters are reasonable. The model can truly reflect the local hydrogeological conditions. In order to further verify the reliability of the model, the precipitation data are verified by the measured data in the same year under the condition of invariant initial and boundary conditions. The results show that the model fits well, that is, the model can truly reflect the local hydrogeological conditions and can be used for groundwater level prediction. The change trend of groundwater flow field in the next 10 years is forecasted, and different mining schemes are worked out. The variation of average velocity of groundwater level, the depth of center and the area of falling funnel in the next 10 years are analyzed. Based on the analysis of the potential of groundwater resources exploitation, it is determined that the second scheme is the optimal exploitation plan under the condition of present situation. Therefore, the exploitation mode of scheme two is adopted to establish the water source area in the study area. According to the results of groundwater resources evaluation and groundwater numerical simulation, the reasonable exploitation plan is determined, and the target area of groundwater exploitation is selected to predict and evaluate the present situation of groundwater environment in the study area. The establishment of sanitary protection belt can prevent groundwater resources from being polluted and reduce the negative impact on local ecological environment.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P641.8

【參考文獻】

相關期刊論文 前10條

1 張盛學;;黑龍江省東部山地區(qū)域分異及農(nóng)業(yè)布局[J];哈爾濱師范大學自然科學學報;1985年03期

2 時吉狀,李明,張立秋;螞蟻河的河道演變及河道整治淺析[J];黑龍江水專學報;2004年02期

3 孫強;李學建;;尚志市城市地下水資源分析評價及開發(fā)對策[J];黑龍江水利科技;2009年04期

4 楊旭,黃家柱,陶建岳;基于GIS的地下水流可視化模擬系統(tǒng)研究[J];現(xiàn)代測繪;2005年02期

5 鄭環(huán);;現(xiàn)代地下水資源數(shù)值模擬技術研究[J];節(jié)水灌溉;2008年07期

6 武強,徐華;地下水模擬的可視化設計環(huán)境[J];計算機工程;2003年06期

7 吳艷祥;;淺析環(huán)境保護與可持續(xù)發(fā)展戰(zhàn)略問題[J];價值工程;2010年17期

8 丁繼紅,周德亮,馬生忠;國外地下水模擬軟件的發(fā)展現(xiàn)狀與趨勢[J];勘察科學技術;2002年01期

9 程璐,朱國榮,江思珉;Theis公式的優(yōu)選逼近求解及在Pocket PC上的嵌入[J];勘察科學技術;2005年03期

10 涂亮;宋漢周;;基于Visual Modflow的黑河中游地下水流數(shù)值模擬[J];勘察科學技術;2009年02期

本文編號：1454646