钻孔置入式地下空洞三维激光(声呐)扫描技术研究与应用

Research and application of equipment placed-in through borehole for three- dimensional laser (sonar) scanning technology for underground cavity

针对现有设备不能满足地下空洞精确测量需求的现状,利用激光和声呐扫描技术,通过逐层扫描空洞二维轮廓构建出空洞三维形态,研制了钻孔置入式地下空洞三维扫描设备。该设备的扫描探头能通过一般地质钻孔顺利置入到待测地下空洞,在无水环境使用激光扫描、有水环境使用声呐扫描。工程应用结果表明:该设备能够探测出溶洞的三维形态、规模和走向,为工程设计和施工提供了重要的基础数据,具有良好的普适性和推广应用价值。

Aiming at the current situation that the existing equipment cannot meet the requirement of accurate measurement of underground cavity, the three-dimensional shape of the cavity was constructed by scanning the two-dimensional outline of the cavity layer by layer using laser and sonar scanning technology, and the borehole embedded three-dimensional scanning equipment of underground cavity was developed.The scanning probe of the device could be successfully placed into the underground cavity through ordinary geological boreholes.Laser scanning was used in anhydrous environments and sonar scanning was used in watery environments.Engineering application results showed that this device could detect the three-dimensional form, scale and trend of karst caves, which provided important basic data for engineering design and construction, and had good universality and application value.