海洋测量技术在输水隧洞进水口检测中的应用

本文以某输水隧洞进水口岩塞爆破后水下检测为例，综合利用多波束声呐、水下机器人、彩色图像声呐等声学和光学相结合的海洋测量技术，获得高精度、全覆盖、高时效性的输水隧洞进水口测量数据。检测结果显示：多波束声呐水下地形测量地形分辨率达1.25 cm,实现输水隧洞进水口岩塞爆破后的形状、尺寸、平面位置、高程及洞口周围边坡高精度检测；水下机器人深入隐蔽复杂的隧洞水底环境，搭载的彩色图像声呐剖面扇扫可拟合隧洞进水口岩塞段、锁口段和集渣坑断面，高清水下摄像呈现了爆破后洞身衬砌质量和集渣坑内块石堆积状况。本文综合利用海洋测量技术，实现了复杂环境水下隧洞的安全、高效、全覆盖检测，其技术手段可为相关水下工程测量提供借鉴。

Application of oceanographic survey technology in underwater detection to convey tunnel inlet

In this paper, the underwater detection to convey tunnel inlet after blasting construction is taken as an example, comprehensive using of multiple-beam sonar, underwater robot, color image sonar and other combined acoustic and optical oceanographic survey technology, to obtain high precision, full coverage and high time efficiency measurement data of water inlet. The results show that, the multi-beam sonar scanning reaches the resolution of 1.25 cm, detecting shape and size of the tunnel, plane position, elevation and surrounding rock slope with high precision. Underwater robot could go deep into complex underwater environment, carried the color image sonar scanning could fit the shape of tunnel inlet rock plug section, lock section and slag pit. High-definition underwater video showed the lining quality of tunnel inlet body and accumulation of blocks and stones in the slag pit after blasting. This technology realizes the safe, efficient and full coverage detection of underwater tunnel in complex environment, and could be used as reference for relevant underwater engineering.