DETECTION OF BURIED AGRICULTURAL DRAINAGE PIPE WITH GEOPHYSICAL METHODS

DETECTION OF BURIED AGRICULTURAL DRAINAGE PIPE WITH GEOPHYSICAL METHODS
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埋地农业排水管的地球物理检测

DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
H. Youn
H. Youn
中科院分区：
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文献类型：
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作者：
B. Allred;N. Fausey;L. Peters;Chi;J. Daniels;H. Youn

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在美国中西部，农民和土地改良承包商面临的一个更令人沮丧的问题是寻找埋在地下的农业排水管道。在已经有地下排水系统的土地上提高土壤水去除效率通常涉及在旧排水管道之间安装新的排水管道。然而，在尝试这种方法之前，需要找到旧的排水管。传统的地球物理方法有可能解决这个问题。因此，为了确定一种更好的方法来探测埋地排水管道，研究了四种近地表地球物理方法的能力，包括地磁测量，电磁感应，电阻率和探地雷达（GPR）。在这四种方法中，只有地质雷达被证明能够找到农业排水管道。此外，在俄亥俄州西南部、中部和西北部的11个含有地下排水系统的试验区进行了GPR网格调查，就定位每个地点的管道总量而言，该技术的平均有效性为81（在6个位置发现了100%的管道，在1个位置发现了90%的管道，在2个位置发现了75%的管道，在1个位置发现了50%的管道，在1个位置发现了0%的管道。事实证明，总的来说，探地雷达在寻找粘土瓦和波纹方面是成功的。 塑料管排水管，在各种不同的土壤材料中，深度约为1米（3英尺）。因此，虽然更多的研究肯定是必要的，探地雷达方法似乎有很好的潜力，农业排水管道检测。
One of the more frustrating problems confronting farmers and land improvement contractors in the Midwest United States involves locating buried agricultural drainage pipes. Enhancing the efficiency of soil water removal on land already containing a subsurface drainage system typically involves installing new drain lines between the old ones. However, before this approach can be attempted, the older drain lines need to be located. Conventional geophysical methods have the potential to provide a solution to this problem. Therefore, in order to determine a better way to detect buried drainage pipe, the abilities of four near-surface geophysical methods were investigated, including geomagnetic surveying, electromagnetic induction, resistivity, and ground penetrating radar (GPR). Of these four, only GPR proved capable of finding agricultural drainage pipe. Furthermore, GPR grid surveys were conducted in southwest, central, and northwest Ohio at 11 test plots containing subsurface drainage systems, and in regard to locating the total amount of pipe present at each site, this technology was shown to have an average effectiveness of 81% (100% of the pipe was found at six sites, 90% at one site, 75% at two sites, 50% at one site, and 0% at one site.) GPR proved, on the whole, to be successful in finding clay tile and corrugated plastic tubing drainage pipe down to depths of approximately 1 m (3 ft) within a variety of different soil materials. Consequently, although more research is certainly warranted, ground penetrating radar methods appear to have excellent potential with respect to agricultural drainage pipe detection.