摘要:為了保證城鎮(zhèn)居民飲水安全,針對(duì)水質(zhì)分級(jí)標(biāo)準(zhǔn)存在的模糊性,引入模糊神經(jīng)網(wǎng)絡(luò)理論,建立水環(huán)境質(zhì)量評(píng)價(jià)模型。選取吉林省白山市白云峰水庫(kù)為研究區(qū),通過(guò)調(diào)查采樣選定6處監(jiān)測(cè)點(diǎn),將其模型評(píng)價(jià)結(jié)果與尼梅羅綜合指數(shù)法的評(píng)價(jià)結(jié)果進(jìn)行對(duì)比分析。結(jié)果顯示,模糊神經(jīng)網(wǎng)絡(luò)評(píng)價(jià)水環(huán)境質(zhì)量是可行的,水質(zhì)評(píng)價(jià)結(jié)果精度更準(zhǔn)確,打破了傳統(tǒng)方法的局限性。模糊神經(jīng)網(wǎng)絡(luò)模型具有較強(qiáng)的學(xué)習(xí)能力,能夠提高地下水水質(zhì)評(píng)價(jià)的準(zhǔn)確性,為日后保護(hù)和管理水環(huán)境提供了科學(xué)依據(jù)。
關(guān)鍵詞:模糊神經(jīng)網(wǎng)絡(luò);水環(huán)境質(zhì)量評(píng)價(jià);監(jiān)測(cè)點(diǎn)
中圖分類號(hào):TP18 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1009-3044(2014)20-4813-02
Application of Fuzzy Neural Network in Water Environmental Quality Assessment
ZHAO Xu1 ,CHEN Li-li2
(1.Geological and Mineral Resources of Liaoning Province Survey Institute, Shenyang 110031,China; 2.Heilongjiang Institute of Geological Survey, Harbin 150036,China)
Abstract: In order to ensure the safety of drinking water for urban residents, the fuzziness of classification of water quality standard, introduce the fuzzy neural network theory, establish the model of water environment quality evaluation. Selects the Jilin province Baishan City baiyunfeng reservoir as a study area, by sampling selected 6 monitoring points, the evaluation of the model evaluation results and the Nemero index analysis and comparison of results. The results showed that, fuzzy neural network evaluation of water environment quality is feasible, water quality evaluation result more accurate, to break the limitations of traditional methods. The model of fuzzy neural network has strong learning ability, can improve the accuracy of groundwater quality evaluation, provided the scientific basis for the protection and management of water environment.
Key words: fuzzy neural network; water quality evaluation; monitoring point
我國(guó)當(dāng)前經(jīng)濟(jì)社會(huì)的發(fā)展正處在城市化、工業(yè)化、現(xiàn)代化進(jìn)程中,有效地保護(hù)和合理利用水資源,防止項(xiàng)目建設(shè)和生產(chǎn)造成的人為水資源破壞,最大限度地減少和降低對(duì)水環(huán)境的影響,保證工程項(xiàng)目的順利建設(shè)和安全運(yùn)行,促進(jìn)水資源的循環(huán)利用和生態(tài)環(huán)境的可持續(xù)維護(hù),水環(huán)境質(zhì)量科學(xué)準(zhǔn)確的評(píng)價(jià)必不可少[1]。該文綜合考慮神經(jīng)網(wǎng)絡(luò)的特點(diǎn),把模糊理論引入評(píng)價(jià)模型中,以水質(zhì)評(píng)價(jià)指標(biāo)作為模型的輸入變量建立模糊神經(jīng)網(wǎng)絡(luò),以白山市白云峰水庫(kù)為研究區(qū),評(píng)價(jià)其水環(huán)境質(zhì)量。
1 模糊神經(jīng)網(wǎng)絡(luò)
1974年,S.C.Lee以和E.T.Lee首次把模糊集和神經(jīng)網(wǎng)絡(luò)聯(lián)系在一起; 1985年,J.M Keller和D.Huut提出把模糊隸屬函數(shù)和感知器算法相結(jié)合。自1992年開(kāi)始,J.J.Backley發(fā)表了多篇關(guān)于混合模糊神經(jīng)網(wǎng)絡(luò)的文章,它們也反映了人們近年來(lái)的興趣點(diǎn)。……