多元融合探测技术在钱塘江古海塘根石探测工程中的应用

Application of Multi-fusion Detection Technology in Root Stone Detection Project of Qiantang Ancient Seawall

钱塘江强涌潮区古海塘塘前滩地冲淤变化复杂多变,塘脚根石分布不匀。应用多波束测深系统快速、高效获取塘前滩地地形,结合侧扫声呐快速实现塘前滩地及丁坝成像,摸清水下塘前滩地及丁坝冲刷情况;利用地质雷达探测滩地下方根石分布情况,从多元探测技术融合出发,在创新和实践的基础上,建立完善的根石探测体系,实现了对单一手段探测数据的互为印证和补充,并将根石探测体系运用于全线古海塘,基本摸清了沿线钱塘江古海塘根石情况,为保障古海塘安全提供有力支撑。

The scouring-silting of the foreland of ancient seawall in strong tidal area of the Qiantang River is complex,and the root stone of the seawall is unevenly distributed.The multi-beam sounding system is used to efficiently obtain the topography of the foreland,and the side-scan sonar is used to instantly image the foreland and groin,so as to quickly understand the scouring situation of the foreland and groin.The geological radar is also used to detect the distribution of the square root stones.By the integration of multiple detection technologies,a perfect root stone detection system is established on the basis of innovation and practice,realizing mutual verification and supplement to the detection data of a single means,which is applied to the whole line of the ancient seawall.The root stones of the ancient seawall along Qiantang River is basically found out,providing strong support for ensuring the safety of the ancient seawall.