本文關(guān)鍵詞：降雨量季節(jié)性變化對營山倒流河流域地下水位的影響　出處：《成都理工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 營山倒流河流域 季節(jié)性降雨 地下水位預(yù)測

【摘要】：降雨量一直以來都是水文模型的非常重要的參數(shù),同時,在防洪抗旱、河川徑流、農(nóng)田灌溉等方面也扮演著非常重要的角色,是研究水文水資源領(lǐng)域的學(xué)者的重點(diǎn)研究對象。營山鄉(xiāng)倒流河流域位于烏蒙山區(qū),屬革命老區(qū),經(jīng)濟(jì)欠發(fā)達(dá)。營山多年平均降雨量在1000mm以上,降水量非常充沛,水資源相對充足,但當(dāng)?shù)鼐用駞s存在用水難的問題。2011年當(dāng)?shù)匕l(fā)生嚴(yán)重旱情,由于當(dāng)?shù)厝狈ν晟频牡叵滤到y(tǒng)資料及監(jiān)測網(wǎng)絡(luò),給抗旱找水工作帶來難度。為當(dāng)?shù)匕傩諏ふ伊己玫乃词悄壳捌惹行枰鉀Q的問題。為進(jìn)一步揭示當(dāng)?shù)氐叵滤畡討B(tài)變化特征,促進(jìn)地下水資源的開發(fā)利用,為當(dāng)?shù)匕傩战⒘己盟?本文結(jié)合野外調(diào)查資料,對數(shù)據(jù)統(tǒng)計分析,并運(yùn)用數(shù)值模擬對地下水位進(jìn)行預(yù)測。對研究區(qū)地質(zhì)條件、水文地質(zhì)條件進(jìn)行了詳細(xì)調(diào)查及分析,查明了區(qū)內(nèi)地下水的化學(xué)類型主要為基巖裂隙水;并且對含水巖組進(jìn)行了劃分,同時對巖組的富水性情況進(jìn)行了探查,區(qū)內(nèi)主要含水層為三疊系下統(tǒng)(T3x)砂巖與侏羅系中統(tǒng)沙溪廟組下段(J2s1)砂巖;對營山地下水的補(bǔ)徑排條件進(jìn)行了探查,查明營山地下水的補(bǔ)給情況,主要是接受降雨補(bǔ)給,通過地表徑流或基巖裂隙以泉形式向倒流河及溝谷排泄;上述工作為建立完善的地下水監(jiān)測系統(tǒng)提供了重要的依據(jù)�；谘芯繀^(qū)一個水文年的降雨量監(jiān)測數(shù)據(jù),對每個月的降雨量,降雨強(qiáng)度,及降雨天數(shù)進(jìn)行統(tǒng)計分析,并與多年平均降雨量數(shù)據(jù)進(jìn)行比較,得出了當(dāng)?shù)亟涤甑募竟?jié)性變化規(guī)律;對研究區(qū)2008年-2013年的全年降水量根據(jù)不同季節(jié)、汛期進(jìn)行統(tǒng)計,分析降水量不同年份在不同季節(jié)的變化規(guī)律,及對地下水位的影響;利用R/S分析法,預(yù)測未來幾年的降水量變化趨勢,上述工作為建立水文地質(zhì)概念模型提供重要參數(shù)依據(jù)。對營山的地質(zhì)條件和水文地質(zhì)條件進(jìn)行探查后,基于這些條件對營山建立的模型的邊界條件以及源匯項(xiàng)的統(tǒng)計進(jìn)行了概化處理,運(yùn)用數(shù)值模擬軟件visual modflow建立地下水流的水文地質(zhì)概念模型和數(shù)值模型,并對季節(jié)性降雨條件下地下水位進(jìn)行預(yù)測及校正檢驗(yàn)。
[Abstract]:Rainfall has always been a very important parameter of hydrological model, at the same time, it also plays a very important role in flood control and drought resistance, river runoff, farmland irrigation and so on. Yingshan backflow river basin is located in Wumeng Mountain area, which is an old revolutionary area with underdeveloped economy. The annual average rainfall of Yingshan is more than 1000mm. The precipitation is very abundant, the water resources are relatively sufficient, but the local residents are difficult to use water. In 2011, serious drought occurred in the local area, because of the lack of perfect groundwater system data and monitoring network. It is an urgent problem to find a good water source for the local people. In order to further reveal the dynamic characteristics of local groundwater and promote the development and utilization of groundwater resources. In order to establish a good water source for local people, this paper combined with field investigation data, statistical analysis of the data, and the use of numerical simulation to predict the groundwater level, and the geological conditions of the study area. The hydrogeological conditions are investigated and analyzed in detail. It is found that the main chemical types of groundwater in this area are bedrock fissure water. The water-bearing rock formation is divided and the water-rich condition of the rock formation is explored. The main aquifers in the area are Triassic Lower Triassic T3x sandstone and Jurassic Lower Shaximiao formation Lower Shaximiao formation (J2s1) sandstone. The recharge condition of underground water in Yingshan is probed into, and the recharge of groundwater in Yingshan is found out, which is mainly to accept rainfall recharge and drain to the river and gully in the form of spring through surface runoff or bedrock fissure. The above work provides an important basis for the establishment of a perfect groundwater monitoring system. Based on the rainfall monitoring data of a hydrological year in the study area, the monthly rainfall and rainfall intensity are analyzed. And the statistical analysis of rainfall days, and the comparison with the average rainfall data for many years, the seasonal variation of local rainfall is obtained. The precipitation of the whole year from 2008 to 2013 in the study area was counted according to different seasons and flood periods, and the variation law of precipitation in different seasons and its influence on groundwater level were analyzed. The precipitation trend in the next few years is predicted by using R- S analysis method. The above work provides important parameter basis for the establishment of hydrogeological conceptual model. The geological conditions and hydrogeological conditions of Yingshan are probed. Based on these conditions, the boundary conditions and the statistics of the source and sink terms of the model established in Yingshan are generalized. The hydrogeological conceptual model and numerical model of groundwater flow are established by using numerical simulation software visual modflow, and the groundwater level under seasonal rainfall is forecasted and corrected.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：P641;P426.6

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本文編號：1402581