Tunnelling in rock presents considerable hydrogeological risks, primarily due to the potential for encountering groundwater. This can lead to significant water ingress, destabilising the rock structure, and creating hazardous conditions for workers. Ground investigation prior to construction is crucial to identify these risks early, allowing for effective planning and implementation of robust waterproofing and support systems. Follow us at tunnel.engineering #hydrogeology #geology #watertunnel #

The "drill and split" method involves drilling holes along a predetermined line and then splitting the rock between the holes using wedges or other mechanical means. It's typically used in softer rock or where blasting isn't feasible due to environmental or safety concerns. Follow us at tunnel.engineering We invite you to register in our Online Tunnel Engineering course. Click the link below https://www.tunnel.engineering/challenge-page/51f7482b-3bfd-48fa-b9a2-3b14d6f8b5ae #drillandsplit #drilla