| 气举反循环清理地下连续墙槽底沉渣数值分析 |
| 投稿时间：2017-06-02 修订日期：2017-10-30 点此下载全文 |
| 引用本文：曾纪文,胡福洪,閤超,等.气举反循环清理地下连续墙槽底沉渣数值分析[J].钻探工程,2017,44(12):71-74.ZENG Ji-wen,HU Fu-hong,GE Chao,et al. Numerical Analysis on Slag Removal of Diaphragm Wall Groove Bottom by Air-lift Reverse Circulation[J]. Drilling Engineering, 2017,44(12):71-74. |
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| 中文摘要:为了深入研究用气举反循环清除地下连续墙槽底沉渣的效果，采用Fluent软件，运用模拟数值分析的方法，建立二维模型，并以气举混合器安置深度、空压机清槽压力、沉渣直径为研究对象，得出了如下结论：气举反循环技术能够有效地将沉渣从连续墙基坑底部返出，沉渣的出口速度范围在0.014～1.098 m/s，粘粒的逃逸速度比其它粒径的逃逸速度大；沉渣厚度越大，沉渣清理出来越难。 |
| 中文关键词:地下连续墙 沉渣 气举反循环、清渣、数值分析 |
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| Numerical Analysis on Slag Removal of Diaphragm Wall Groove Bottom by Air-lift Reverse Circulation |
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| Abstract:In order to study the application effect of air-lift reverse circulation in slag removal of diaphragm wall groove bottom, Fluent software was used to establish a two-dimensional model by means of simulated numerical analysis method. The placement depth of air-lift mixer, slag cleaning pressure of air compressor and slag diameter are taken as the research objects. It is concluded that the air-lift reverse circulation technology can effectively remove slag from the foundation pit bottom of diaphragm wall. The velocity of slag flowing out is 0.014～1.098m/s, the escape velocity of clay particles is faster than that of slag with other sizes; and the thicker the slag is, the more difficult the slag removal is. |
| keywords:diaphragm wall slag gas-lift reverse circulation slag removal numerical analysis |
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