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随着我国隧道数量和里程的增加,既有隧道的病害也逐渐增加,隧道日常和定期检查也越来越重要。建立既有隧道衬砌表面检测坐标系,有利于现场对病害进行准确定位,避免各检测公司在现场重新确定桩号而出现的人力资源浪费;建立了该坐标系,在后期重复性检测过程中,对外观病害进行编号,实现病害在坐标中定位唯一化、准确化和永久化,较快地提升后期检查的效率,以及准确判断病害发展趋势;另外,如需进行专项检查,隧道衬砌表面检测坐标系也可为地质雷达、衬砌混凝土强度检测等提供精准定位。最后,隧道衬砌表面坐标的建立,可以为三维激光扫描技术提供一套基准线网,实现扫描坐标与衬砌表面坐标的整合,完成三维激光图像的校正。
With the increase of the number of tunnels and the mileage in our country, the diseases of the existing tunnels also gradually increase. The routine and regular inspection of the tunnels is also becoming more and more important. The establishment of the existing tunnel lining surface detection coordinate system is conducive to the on-site accurate positioning of the disease to avoid the detection company in the field to determine the stakes and the emergence of human resources waste; the establishment of the coordinate system, in the latter part of the repetitive detection process, The number of appearance diseases, disease positioning in the coordinates unique, accurate and permanent, faster to improve the efficiency of post-mortem check, and accurately determine the trend of disease development; In addition, for special inspection, tunnel lining surface detection coordinates The system can also provide precise positioning for the detection of geologic radar and lining concrete strength. Finally, the establishment of the surface coordinates of the tunnel lining can provide a set of baseline net for the three-dimensional laser scanning technology to realize the integration of the scanning coordinates and the lining surface coordinates and complete the correction of the three-dimensional laser image.