本文選題：隧道施工 + 灰色關(guān)聯(lián)法��； 參考：《西南交通大學(xué)》2015年碩士論文

【摘要】：伴隨著隧道建設(shè)快速發(fā)展,基礎(chǔ)設(shè)施環(huán)保觀念的加強,隧道建設(shè)過程中對地下水環(huán)境的影響受到更多的關(guān)注。隧道建設(shè)涌突水導(dǎo)致地下水滲漏、地表沉降等負效應(yīng),同時地下水反作用于隧道,對隧道建設(shè)和運營有不利的影響。本文研究隧道建設(shè)對地下水環(huán)境的影響,首先研究水文地質(zhì)工程分析當(dāng)?shù)氐叵滤奶卣?其次進行水化學(xué)分析,對隧道內(nèi)的出水來源進行識別,并對隧道工程的涌水量進行預(yù)測,最后通過層次分析法對隧道工程負效應(yīng)進行評價。本文依托雪山梁隧道建設(shè)項目,研究了隧道施工對地下水環(huán)境負面影響,主要得出以下結(jié)論：(1)根據(jù)工程地質(zhì)概況得到本地區(qū)巖溶發(fā)育條件極好,但當(dāng)?shù)亟涤昶?多年平均降雨約729mm,地下水埋藏較深,洞身大部分處于垂直循環(huán)帶中,部分處于水平循環(huán)帶中,因此隧道開挖對地下水的影響不大。(2)通過現(xiàn)場地表水地下水取樣,采用水化學(xué)分析隧道水與取水點之間的聯(lián)系,通過灰色關(guān)聯(lián)法得出隧道水與大氣降水的關(guān)聯(lián)度最大,隧道出口隧道水與大氣降水的關(guān)聯(lián)度為0.84,與黃龍景區(qū)的關(guān)聯(lián)度僅為0.39,隧道進口隧道水與大氣降水的關(guān)聯(lián)度為0.72,表明隧道水來源為大氣降水且與黃龍景區(qū)無水力聯(lián)系,與施工揭露的分析結(jié)果一致。(3)通過三維數(shù)值模擬對雪山梁隧址區(qū)進行概化,對補給源、巖體-水、邊界條件進行概化,模擬在無隧道、隧道開挖、開挖后豐水年以及注漿后的地下水影響區(qū)和涌水量,該方法求得根據(jù)本方法隧道開挖后無措施情況、開挖后豐水期、開挖注漿后涌水量平均分別為7281.3m3/d,,14722.8 m3/d,2897.0 m3d。(4)研究隧道開挖后對地下水評價的負效應(yīng),從地下水補給因素、地下水徑流因素和隧道工程因素三個方面分析,判斷負效應(yīng)中較弱和中等占主要優(yōu)勢,雪山梁隧道開挖對地下水影響介于較弱和中等之間,隧道內(nèi)出現(xiàn)明顯或股狀涌水,出現(xiàn)小范圍降水漏斗,局部地表水受影響,流量偏少。
[Abstract]:With the rapid development of tunnel construction and the strengthening of environmental protection concept of infrastructure, more attention has been paid to the impact of tunnel construction on groundwater environment. The water inrush of tunnel construction leads to the negative effects of groundwater leakage and surface subsidence, and the reaction of groundwater to the tunnel has a negative effect on the tunnel construction and operation. In this paper, the influence of tunnel construction on groundwater environment is studied. Firstly, the characteristics of local groundwater are analyzed by hydrogeological engineering, and then hydrochemical analysis is carried out to identify the source of effluent in the tunnel. Finally, the negative effect of tunnel engineering is evaluated by analytic hierarchy process (AHP). Based on the construction project of Xueshanliang Tunnel, this paper studies the negative effects of tunnel construction on groundwater environment, and draws the following conclusion: (1) according to the general situation of engineering geology, the karst development condition in this area is excellent, but the local rainfall is on the low side. The annual average rainfall is about 729mm, the groundwater is buried deep, the hole body is mostly in the vertical circulation zone, and part is in the horizontal circulation zone, so the tunnel excavation has little influence on the groundwater. The relationship between tunnel water and water intake point is analyzed by hydrochemistry, and the maximum correlation degree between tunnel water and precipitation is obtained by grey correlation method. The correlation degree between tunnel water and precipitation at the exit of tunnel is 0.84, that with Huanglong scenic area is only 0.39, and that between tunnel water and precipitation at tunnel entrance is 0.72, which indicates that the water of tunnel comes from atmospheric precipitation and has no hydraulic relation with Huanglong scenic area. In accordance with the analysis results revealed by construction, the three-dimensional numerical simulation is used to generalize the site of Xueshan beam tunnel, to generalize the source of recharge, rock-water and boundary conditions, and to simulate the excavation of the tunnel without the tunnel. The influence area and water quantity of groundwater after excavation and grouting are obtained by this method. According to this method, no measures are taken after tunnel excavation, and the period of high water after excavation is obtained. The average inflow of water after excavation and grouting is 7281.3m3 / d respectively 14722.8 m3s / d 2897.0 m3d.d4) the negative effects of tunnel excavation on groundwater evaluation are studied and analyzed from three aspects: groundwater recharge factor, groundwater runoff factor and tunnel engineering factor. In the judgment of the negative effect, the weak and moderate are the main advantages. The excavation of the Xueshanliang Tunnel has a weak and moderate influence on groundwater. There are obvious or femoral inrush in the tunnel, a small range of precipitation funnel, the local surface water is affected, and the discharge is less.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X82;U455

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