three-arm drilling trolley

Brief Analysis of the Application of Three-arm Drilling Trolley in Highway Tunnel Excavation Construction

In order to clarify the application method and application effect of three-wall drilling trolley in highway tunnel engineering excavation construction, combined with the Beidouping Tunnel example, the excavation construction process of the three-arm drilling trolley and the problems existing in the

railway single-line tunnel

Application of three-arm drilling trolley in efficiency improvement and excess consumption control of railway single-line tunnel construction

Based on the application of the three - arm rock drilling trolley in the excavation and drilling construction of a single line railway tunnel, this paper controls the Angle of the excavation cut hole and the surrounding hole through the modification of the beam and the adjustment of the on-site

tunnels

Application Research and Analysis of Three-arm Drilling Trolley in Sanleng Mountain Tunnel

Three-arm drilling trolley is the most advanced special equipment for mountain drilling and drilling technology，especially for soft and broken geological tunnel． In this paper，taking Sanleng mountain tunnel for example，for the characteristics of tunnel surrounding rock more broken，excavation section