Deploying Sonar Systems to Create 3D Maps for Underwater Excavation: Multibeam Echosounder, ROV-Mounted Sonar Used To Survey Blast Site for Construction of Reservoir Intake

摘要

The construction of the third water intake of the Southern Nevada Water Authority at the Lake Mead reservoir required an underwater excavation at 100 meters depth, and a large basalt surface had to be deepened by 20 meters. No new technology was available to fit the project, so the old imprecise yet effective method of using shaped demolition charges was chosen. However, no shaped charge was found in the market that fit the underwater specifications of the project, so a new one had to be conceived, along with a deployment system and technique, monitoring and survey procedures.