本文選題：龍湖 + 滲漏量　； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：龍湖工程位于河南省鄭州市鄭東新區(qū)，通過(guò)人工開挖成湖，龍湖周邊湖岸規(guī)劃標(biāo)高87.50m，正常蓄水位85.50m，龍湖水域面積5.6km2，平均水深4.5m，最大水深7.0m，相應(yīng)的水體體積為2680×104m3。龍湖工程采用垂直防滲與水平防滲相結(jié)合的方案，即湖周設(shè)一道塑性混凝土防滲墻，防滲墻厚度為30cm、防滲墻滲透系數(shù)為1106cm/s，防滲墻深入第5層重粉質(zhì)壤土層1m；湖灣區(qū)采用壤土鋪蓋防滲，防滲鋪蓋透水性為110-6cm/s、鋪蓋厚度為50cm。湖區(qū)周邊布置25個(gè)截滲井，井半徑0.5m，井深至細(xì)沙層1~5m，即75m高程。 鑒于龍湖工程仍有一定的水滲入周邊地區(qū)，本文依據(jù)鄭東新區(qū)龍湖周邊水文地質(zhì)資料，建立龍湖工程三維滲流模型，對(duì)截滲井回注水方案進(jìn)行研究。 （1）數(shù)值模擬了建湖前龍湖所在區(qū)域的地下水狀況，，并與勘測(cè)地下水?dāng)?shù)據(jù)進(jìn)行了比較，率定了所建立的龍湖地下水?dāng)?shù)學(xué)模型，數(shù)值模擬結(jié)果與實(shí)測(cè)地下水結(jié)果吻合較好。 （2）模擬了龍湖成湖后無(wú)防滲措施情況下龍湖湖區(qū)水位85.5m的地下水滲流場(chǎng)及滲漏量。研究結(jié)果表明，龍湖無(wú)防滲措施情況年滲漏量3102.5×104m3/a。 （3）模擬了龍湖成湖后采取防滲措施情況下龍湖湖區(qū)水位85.5m的地下水滲流場(chǎng)及滲漏量。研究結(jié)果表明，龍湖有防滲措施情況年滲漏量739.9×104m3/a。 （4）模擬了有防滲措施情況龍湖湖區(qū)水位85.5m的湖周邊截滲井初始方案的抽水量及水位變化。研究結(jié)果表明，截滲井單井年抽水量22.56×104m3/a，截滲井年抽水總量564×104m3/a。 （5）根據(jù)初始方案的模擬結(jié)果進(jìn)行優(yōu)化，提出了五個(gè)截滲井優(yōu)化方案，進(jìn)行了抽水量及水位的模擬，通過(guò)分析比較，提出了截滲井抽水最終方案。截滲井抽水最終方案，即湖區(qū)周邊設(shè)置29個(gè)截滲井，截滲井單井抽水量為60m3/h，研究結(jié)果表明，截滲井單井年抽水量20.82×104m3/a截滲井年抽水總量604×104m3/a。
[Abstract]:The Longhu Lake Project is located in the Zheng Dong New area of Zhengzhou City, Henan Province. The lake is constructed into a lake by artificial excavation. The normal water level is 85.50 m, the water area is 5.6 km ~ 2, the average water depth is 4.5 m, the maximum water depth is 7.0 m, and the corresponding water volume is 2680 脳 10 4 m ~ 3. The project of Longhu Lake adopts the combination of vertical and horizontal seepage control, that is, a plastic concrete cutoff wall is set up around the lake. The thickness of impermeable wall is 30 cm, the permeability coefficient of impervious wall is 1106 cm / s, the impervious wall is 1 m deep into the fifth layer of heavy silty loam, and the impermeability of impermeable cover is 110-6 cm / s and the thickness of pavement is 50 cm 路s. Around the lake area, 25 percolation wells with a radius of 0.5 m are arranged, and the depth of the well is 1 ~ 5 m, that is, 75 m elevation. According to the hydrogeological data of Longhu Lake in the new area of Zheng Dong, the three-dimensional seepage model of Longhu Lake project is established, and the water injection scheme of the intercepting seepage well is studied in this paper. 1) the groundwater condition of Longhu Lake in front of the lake is simulated numerically, and compared with the groundwater survey data, the mathematical model of groundwater in Longhu Lake is established. The numerical simulation results are in good agreement with the measured groundwater data. 2) the groundwater seepage field and seepage amount of 85.5 m water level in Longhu Lake were simulated without anti-seepage measures after the formation of Longhu Lake. The results show that the annual leakage of Longhu Lake is 3102.5 脳 104 m3 / a without seepage control measures. (3) the seepage field and seepage amount of the groundwater level of 85.5 m are simulated under the condition of taking anti-seepage measures after the formation of Longhu Lake. The results show that the annual leakage of Longhu Lake is 739.9 脳 104 m3 / a. (4) the water pumping capacity and water level change of the initial scheme of the percolation well around the lake with 85.5 m water level in the Longhu Lake region are simulated. The results show that the annual pumping capacity of a single well is 22.56 脳 10 ~ 4 m ~ (3 / a), and the total annual pumping amount is 564 脳 10 ~ (4) m ~ (-3 / a) a. 5) according to the simulation results of the initial scheme, the paper puts forward five optimized schemes for the seepage intercepting wells, and simulates the pumping capacity and water level. Through analysis and comparison, the final scheme of pumping in the percolation well is put forward. The final water pumping scheme of the percolation well is that 29 percolation wells are set up around the lake area, and the pumping capacity of the single well is 60m3 / h. The results show that the annual pumping capacity of the single well is 20.82 脳 104m3/a. The total annual pumping amount of the single well is 604 脳 10 ~ 4 m ~ 3 / a.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV213.4

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