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給水度測定儀設(shè)計
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國家高技術(shù)研究發(fā)展計劃(863計劃)資助項目(2002AA62Z3191);陜西省農(nóng)業(yè)科技創(chuàng)新項目(2011NXC01—20)


Design of Determinator for Specific Yield
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    摘要:

    針對目前原狀土測定給水度方法存在較大誤差,,設(shè)計了一種原狀土給水度測定儀,,并提出新的測試思路及其計算方法,。首先設(shè)計了給水度測定儀的結(jié)構(gòu)及其操作過程,,然后在分析土體入滲過程和釋水過程的基礎(chǔ)上,,根據(jù)給水度定義,,對給水度的計算公式進(jìn)行推導(dǎo),,得到了用介質(zhì)和滲透液的物理性質(zhì)指標(biāo)表述的給水度計算公式,。分析結(jié)果及實(shí)例計算表明,,原狀土給水度測定儀測定過程簡單,,滲流過程與實(shí)際流態(tài)相近,公式計算結(jié)果準(zhǔn)確,。

    Abstract:

    Because the current methods for determining specific yield of undisturbed soil are not precise, aimed at designing a new determinator and proposing a new test idea and its calculation method, the research was conducted. First, the structure of a new determinator and its operational process for specific yield were proposed. Second, based on the analysis of infiltration and water release process of soil and the definition of specific yield, the formula presented by physical property parameters of medium and penetration liquid was obtained for computation of specific yield. The analysis results and examples indicated that the determination process of the determinator designed is simple. The seepage process was approximately the same as the practical flow pattern, and the formula has high accuracy.

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趙延風(fēng),王正中,劉計良.給水度測定儀設(shè)計[J].農(nóng)業(yè)機(jī)械學(xué)報,2011,42(9):69-73. Zhao Yanfeng, Wang Zhengzhong, Liu Jiliang. Design of Determinator for Specific Yield[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(9):69-73.

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