| 离心试验中的地下水模拟控制研究 |
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| 引用本文： | 张敏,吴宏伟.离心试验中的地下水模拟控制研究[J].岩土力学,2010,31(2):355-360. |
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| 作者姓名： | 张敏 吴宏伟 |
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| 作者单位： | 1. 深圳大学,土木工程学院,深圳,518060;深圳市土木工程耐久性重点实验室,深圳,518060
2. 香港科技大学,土木工程系,香港 |
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| 基金项目： | 中国国家自然科学基金资助项目，建设部软科学研究项目 |
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| 摘 要： | 为了通过离心模型试验研究地下水位变化对边坡稳定性的影响,设计和使用了一套地下水模拟控制系统。这套系统包括了供水系统以及水位控制系统。通过设置孔压传感器,反馈水位信息以及旋转中电磁阀的开合,可以控制地下水位的上升与下降。由于离心机旋转的特性,孔压的测定以及传感器位置确定存在一定误差,研究了这些误差对试验结果的影响。通过一个地下水上升的砂土边坡离心模型试验,成功应用了该套地下水模拟控制系统。
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| 关 键 词： | 地下水控制 离心模拟 测量误差 |
| 收稿时间： | 2008-09-19 |
Groundwater control technique in centrifuge tests |
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| ZHANG Min,NG Charles W W.Groundwater control technique in centrifuge tests[J].Rock and Soil Mechanics,2010,31(2):355-360. |
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| Authors: | ZHANG Min NG Charles W W |
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| Institution: | 1. School of Civil Engineering, Shenzhen University, Shenzhen 518060, China; 2. Shenzhen Key Lab. of Durability in Civil Engineering, Shenzhen 518060, China; 3. Department of Civil Engineering, Hong Kong University of Science and Technology |
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| Abstract: | A groundwater control system has been designed to simulate various groundwater conditions in centrifuge tests. The system consists of a water supply part and a control part. A desirable groundwater table can be obtained via a solenoid valve and a feed-back pore pressure transducer. Due to the rotation of a centrifuge model, accuracy in the determination of groundwater table and the location of transducer are discussed. The design of the groundwater control system was verified in a centrifuge slope test and satisfactory results were obtained. |
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| Keywords: | groundwater control centrifuge modelling accuracy of measurement |
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