小浪底灌區(qū)11號(hào)隧洞F29斷層滲水問(wèn)題的同位素水文地球化學(xué)研究
發(fā)布時(shí)間：2018-11-09 07:37
【摘要】：小浪底北岸灌區(qū)作為河南最重要的糧食生產(chǎn)核心區(qū)之一,通過(guò)工程建設(shè),完善水利基礎(chǔ)設(shè)施,搞好田間排灌體系,對(duì)于加快河南省糧食生產(chǎn)核心區(qū)建設(shè),提高糧食綜合生產(chǎn)能力,保障國(guó)家糧食安全具有積極意義。近年來(lái),灌區(qū)范圍內(nèi)的濟(jì)源市發(fā)展迅速,水資源供需矛盾更為突出,故需開(kāi)辟新的水源。小浪底北岸灌區(qū)一期工程主要任務(wù)是由小浪底水庫(kù)向濟(jì)源市供水,而其11號(hào)隧洞涌水問(wèn)題關(guān)系著整個(gè)工程能否順利進(jìn)行,小浪底北岸灌區(qū)受區(qū)域性斷裂影響,場(chǎng)區(qū)內(nèi)分布有次級(jí)斷裂及裂隙發(fā)育,對(duì)隧洞影響規(guī)模較大,并出現(xiàn)了隧洞涌水問(wèn)題。隧洞涌突水是隧洞施工和運(yùn)營(yíng)過(guò)程中常見(jiàn)的地質(zhì)災(zāi)害。隧洞的涌突水嚴(yán)重危及隧洞施工的安全,影響隧洞施工的進(jìn)度,而且如果隧洞施工措施不當(dāng),常常會(huì)使隧洞建成后運(yùn)營(yíng)環(huán)境惡劣,地表環(huán)境惡化,給人們的生產(chǎn)和生活造成重大的損失,因此對(duì)其進(jìn)行研究對(duì)工程安全及供水問(wèn)題的解決具有重要的理論及實(shí)踐意義。本論文應(yīng)用環(huán)境同位素與水文地球化學(xué)方法,以研究區(qū)裂隙型地下水補(bǔ)-徑-排條件為主線,在區(qū)域水文地質(zhì)條件的約束下,開(kāi)展了F29斷層周圍地下水的補(bǔ)給、徑流、排泄條件;大氣降水、上部風(fēng)化裂隙水、下部構(gòu)造裂隙水之間的水力聯(lián)系;隧洞涌水的來(lái)源及其混合比例;斷層的水文地質(zhì)意義等一系列問(wèn)題的研究,對(duì)研究區(qū)地下水的水文地球化學(xué)特征及其水化學(xué)形成作用;研究區(qū)裂隙型地下水的δD、δ18O與3H等環(huán)境同位素特征;F29斷層水的補(bǔ)給來(lái)源、補(bǔ)給高程;不同水流系統(tǒng)對(duì)隧洞涌水的貢獻(xiàn)混合比例及潛在涌水量等相關(guān)水文地質(zhì)問(wèn)題提供了同位素水文地球化學(xué)證據(jù)。實(shí)踐證明環(huán)境同位素與水文地球化學(xué)結(jié)合對(duì)于解決隧洞滲水問(wèn)題有較強(qiáng)的示蹤作用,可普遍用于水利工程隧洞滲水及相關(guān)水文地質(zhì)問(wèn)題。
[Abstract]:As one of the most important grain production core areas in Henan Province, the North Bank Irrigation District of Xiaolangdi, through engineering construction, improving water conservancy infrastructure and improving field drainage and irrigation system, will speed up the construction of grain production core areas in Henan Province. It is of positive significance to improve the comprehensive production capacity of grain and ensure national food security. In recent years, Jiyuan City in irrigation district has developed rapidly and the contradiction between supply and demand of water resources is more prominent, so it is necessary to open up new water sources. The main task of the first stage project of Xiaolangdi North Shore Irrigation District is to supply water from Xiaolangdi Reservoir to Jiyuan City. However, the water gushing problem of its No. 11 tunnel is related to whether the whole project can be carried out smoothly, and the irrigation area along the North Coast of Xiaolangdi is affected by regional faults. Secondary faults and fissures are distributed in the field area, which have a great influence on the tunnel scale, and the problem of tunnel water gushing appears. Tunnel water inrush is a common geological hazard in tunnel construction and operation. The water inrush of the tunnel seriously endangers the safety of the tunnel construction and affects the progress of the tunnel construction. Moreover, if the tunnel construction measures are not appropriate, the operation environment will be bad and the surface environment will deteriorate after the tunnel is completed. The research on it is of great theoretical and practical significance to solve the problems of engineering safety and water supply. Based on the environmental isotopic and hydrogeochemical methods, the recharge and runoff of groundwater around F29 fault are carried out under the constraints of regional hydrogeological conditions, taking the recharge, path and discharge conditions of fissured groundwater in the study area as the main line. Discharge conditions; The hydraulic relation between the upper weathering fissure water and the lower structural fissure water, the source of tunnel water gushing and its mixing ratio; A series of problems, such as hydrogeological significance of faults, have been studied on hydrogeochemical characteristics and hydrochemical formation of groundwater in the study area, environmental isotopic characteristics such as 未 D, 未 18O and 3H of fissured groundwater in the study area. Related hydrogeological problems such as the recharge source of F29 fault water, the recharge height, the contribution of different flow systems to the tunnel water inflow and the potential water inflow, etc., provide isotopic hydrogeochemical evidence. It is proved by practice that the combination of environmental isotope and hydrogeochemistry has a strong tracer effect on solving the seepage problem of tunnel and can be widely used in water conservancy engineering tunnel seepage and related hydrogeological problems.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TV223.4
本文編號(hào)：2319772
[Abstract]:As one of the most important grain production core areas in Henan Province, the North Bank Irrigation District of Xiaolangdi, through engineering construction, improving water conservancy infrastructure and improving field drainage and irrigation system, will speed up the construction of grain production core areas in Henan Province. It is of positive significance to improve the comprehensive production capacity of grain and ensure national food security. In recent years, Jiyuan City in irrigation district has developed rapidly and the contradiction between supply and demand of water resources is more prominent, so it is necessary to open up new water sources. The main task of the first stage project of Xiaolangdi North Shore Irrigation District is to supply water from Xiaolangdi Reservoir to Jiyuan City. However, the water gushing problem of its No. 11 tunnel is related to whether the whole project can be carried out smoothly, and the irrigation area along the North Coast of Xiaolangdi is affected by regional faults. Secondary faults and fissures are distributed in the field area, which have a great influence on the tunnel scale, and the problem of tunnel water gushing appears. Tunnel water inrush is a common geological hazard in tunnel construction and operation. The water inrush of the tunnel seriously endangers the safety of the tunnel construction and affects the progress of the tunnel construction. Moreover, if the tunnel construction measures are not appropriate, the operation environment will be bad and the surface environment will deteriorate after the tunnel is completed. The research on it is of great theoretical and practical significance to solve the problems of engineering safety and water supply. Based on the environmental isotopic and hydrogeochemical methods, the recharge and runoff of groundwater around F29 fault are carried out under the constraints of regional hydrogeological conditions, taking the recharge, path and discharge conditions of fissured groundwater in the study area as the main line. Discharge conditions; The hydraulic relation between the upper weathering fissure water and the lower structural fissure water, the source of tunnel water gushing and its mixing ratio; A series of problems, such as hydrogeological significance of faults, have been studied on hydrogeochemical characteristics and hydrochemical formation of groundwater in the study area, environmental isotopic characteristics such as 未 D, 未 18O and 3H of fissured groundwater in the study area. Related hydrogeological problems such as the recharge source of F29 fault water, the recharge height, the contribution of different flow systems to the tunnel water inflow and the potential water inflow, etc., provide isotopic hydrogeochemical evidence. It is proved by practice that the combination of environmental isotope and hydrogeochemistry has a strong tracer effect on solving the seepage problem of tunnel and can be widely used in water conservancy engineering tunnel seepage and related hydrogeological problems.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TV223.4
【參考文獻(xiàn)】
相關(guān)期刊論文 前1條
1 尹觀,倪師軍;地下水氘過(guò)量參數(shù)的演化[J];礦物巖石地球化學(xué)通報(bào);2001年04期
，本文編號(hào)：2319772
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