| 介质层振动信号时域分析及其在填埋场漏洞修 |
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| 引用本文： | 金朝娣,能昌信,常 琳,董 路,刘玉强.介质层振动信号时域分析及其在填埋场漏洞修[J].环境科学研究,2010,23(1):85-89. |
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| 作者姓名： | 金朝娣 能昌信 常 琳 董 路 刘玉强 |
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| 作者单位： | 1.中国环境科学研究院固体废物污染控制技术研究所, 北京 100012;中国矿业大学(北京)机电与信息工程学院, 北京 100083 |
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| 基金项目： | 国家高技术研究发展计划(863)项目(2007AA061303) |
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| 摘 要： | 钻探灌浆修补技术是填埋场防渗层漏洞修补的重要发展方向，难点是如何准确地控制和判断钻头到达填埋场防渗层(即卵石保护层)而不会破坏其下面的HDPE膜. 利用采集仪对钻头在防渗层不同介质层中的振动加速度信号进行采集，分别采用波形幅度分析法、循环绝对值求和法及分段均方根法对数据进行了分析. 结果表明:①波形幅度分析法能够明显区分垃圾层和卵石层；②循环绝对值求和法与分段均方根法也可区分垃圾层和卵石层，但存在约1 s的时间误差或0.5 cm的距离误差，该误差在允许的范围内. 3种不同时域分析方法的对比显示，波形幅度分析法简单直观，其他2种分析方法能够直观地反映信号的包络趋势，据此敏感地反映信号的突变情况和加速度幅度大小在单位时间内的概率分布，进而可以灵活地控制钻机.
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| 关 键 词： | 防渗层修补 振动信号 时域分析 |
| 收稿时间： | 2009/6/3 0:00:00 |
| 修稿时间： | 2009/7/16 0:00:00 |
Time-Domain Analysis of Vibration Signals in Different Media of Landfills and Application in the Technology of Leak Repair |
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| JIN Zhao-di,NAI Chang-xin,CHANG Lin,DONG Lu and LIU Yu-qiang.Time-Domain Analysis of Vibration Signals in Different Media of Landfills and Application in the Technology of Leak Repair[J].Research of Environmental Sciences,2010,23(1):85-89. |
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| Authors: | JIN Zhao-di NAI Chang-xin CHANG Lin DONG Lu and LIU Yu-qiang |
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| Institution: | 1.Institute of Solid Waste Management, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;School of Mechanical Electronic & Information Engineering, China University of Mining & Technology, Beijing 100083, China2.Institute of Solid Waste Management, Chinese Research Academy of Environmental Sciences, Beijing 100012, China3.School of Mechanical Electronic & Information Engineering, China University of Mining & Technology, Beijing 100083, China |
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| Abstract: | Drilling and grouting repair technology is an important direction of landfill liner leakage detection and repair.The difficulty of this technology is how to detect the gravel layer,in order to avoid damaging the HDPE membrane.In this paper,different vibration signals of the bit in different medium layers were collected by Data Acquisition Instrument and analyzed by the waveform amplitude analysis method,the rotative sum of absolute values method and the sub-root-meansquare method.The results show that: the ... |
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| Keywords: | impermeable layer patch vibration signals time-domain analysis |
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