Shimizu Corporation announced on the 2nd that it has developed and put into practical use a tunnel face measurement system called "S-LiRT" that uses mobile LiDAR to measure and evaluate excavation accuracy in real time, aiming to improve the safety and productivity of mountain tunnel construction. The system consists of two LiDAR units installed on both sides of the tunnel and two rails on which they move, and is effective for mechanical excavation, acquiring absolute coordinates of the tunnel face shape while compensating for blind spots. The acquired coordinates are immediately converted into overbreak and underbreak amounts and displayed in color on a monitor in the operator's cab to assist the operator. The closing price on the 2nd was 2,396 yen, down 58 yen from the previous day.
Shimizu CorporationDeveloped and commercialized S-LiRT, a new tunnel face measurement system using mobile LiDAR, enhancing safety and productivity.
