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水闸闸基隐患探测雷达图像特征分析
Feature analysis on radar pictures for detecting hidden danger of floodgate base
【摘要】 水闸闸基隐患严重威胁水闸安全,闸基淘空是水闸较常见的隐患之一.闸底地基垫层在水闸上下游水位差的作用下,经一段时间的运行后,往往会形成强渗流层和淘空区,洪水到来时便产生管涌,危及水闸的安全运行和人民的生命财产安全.利用探地雷达技术可探测出闸基冲刷剥蚀程度、淘空区的位置、范围、发育程度及规模,便于及早采取防范措施,进行加固处理.探地雷达技术是水闸闸基隐患探测的有效手段,雷达图像的特征分析是雷达资料解释的关键,通过雷达图像的特征分析,可判译出闸基隐患的具体部位和类型.
【Abstract】 Hidden danger is seriously threatened the security of floodgate and the safe of the life and property of the people. One of which is made hole of hollow in a base of floodgate where can be lead to piping in flood, as has been work for a time, the base layer is produced strong permeate area and hollow area under the high/low water level difference. It be detected the degree of scouring, denudation, the position of hollow area, growth level and scale by the GPR technique, so a control measure and properly reinforce there is adopted as early as possible, the GPR technique is a effective method of detecting hidden danger in a base of floodgate, the key to explain radar data is the feature analysis of radar picture.
【Key words】 GPR; hollow area; strong permeates area; floodgate hidden danger;
- 【文献出处】 地球物理学进展 ,Progress In Geophysics , 编辑部邮箱 ,2003年03期
- 【分类号】TV66
- 【被引频次】15
- 【下载频次】98