一、工程地质测绘采用航空摄影照片进行地质填图已成为常规方法。近来又有比摄影测量更快更省的办法,如利用卫星图象,其误差为0.75米;激光测绘可以穿过树木,并能穿过20米水层;红外航空摄影等。采用这些方法,还可通过计算机进行图象处理,其识别能力有很大提高,可以解释肉眼无法分辨的地质现象。 First, the engineering geological mapping using aerial photography photographs for geological mapping has become the conventional method. Recently, there has been a faster and more efficient method than photogrammetry, such as the use of satellite imagery with an error of 0.75 meters; laser mapping can cross the trees and can pass through a water layer of 20 meters; and infrared aerial photography. By using these methods, the image processing can also be performed by a computer, the recognition ability is greatly improved, and the geological phenomenon that the naked eye can not resolve can be explained.