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high precision ultrasonic borehole imaging technology
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high precision ultrasonic borehole imaging technology
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工学
工程数字化勘测技术
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high precision ultrasonic borehole imaging technology
高精度超声波钻孔成像技术
以孔内探头发出的超声波为信号源,向下发射脉冲超声波信号,信号经倾斜45°放置的凹面镜聚焦反射、改变方向。并垂直入射孔壁,信号经孔壁反射,被探头接收形成一个像点,如此经360°扫描后形成在某一个深度孔壁一周的图像成像技术。
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