【摘要】：巖溶地區(qū)地表水庫與地下水有較為密切的水力聯(lián)系,合理預測巖溶水庫滲漏程度對工程設計與施工具有重要指導意義。以云南省某水庫為例,在分析庫區(qū)巖溶水文地質(zhì)條件的基礎上,利用USGS開發(fā)的Model Muse對水庫擴建后受影響區(qū)域進行地下水數(shù)值模擬,并結(jié)合UCODE對滲透系數(shù)及入滲強度等參數(shù)進行敏感度分析。得出棲霞茅口組灰?guī)r(P1q+m)的滲透系數(shù)等四個敏感度較高的參數(shù)。這些參數(shù)在合理取值范圍內(nèi)存在多個值會對預測水庫滲漏量及滲漏等級產(chǎn)生較強影響。因此,在利用數(shù)值法預測水庫的滲漏等級時,首先應對研究區(qū)做全面細致勘察,提升參數(shù)的準確性與可靠性。
[Abstract]:There is a close hydraulic relation between surface reservoir and groundwater in karst area. It is important to predict the seepage degree of karst reservoir reasonably for engineering design and construction. Taking a reservoir in Yunnan Province as an example, based on the analysis of the karst hydrogeological conditions in the reservoir area, the groundwater numerical simulation of the affected area after the expansion of the reservoir is carried out by using the Model Muse developed by USGS. The sensitivity of permeability coefficient and infiltration strength were analyzed with UCODE. The permeability coefficient of Qixia Maokou formation limestone (P1Q m) is obtained. The existence of several values in the reasonable range of these parameters will have a strong influence on the prediction of reservoir leakage and leakage grade. Therefore, in order to improve the accuracy and reliability of the parameters, the numerical method should be used to predict the leakage grade of the reservoir.
【作者單位】： 地質(zhì)災害防治與地質(zhì)環(huán)境保護國家重點實驗室(成都理工大學);中國電建集團成都勘測設計研究院有限公司;曲靖市水利電力勘測設計研究院;
【基金】：國家自然科學基金面上項目(41472275);國家自然科學基金青年基金(41502237)資助
【分類號】：TV221.2;TV697

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