The shield tunnel of the Kunming subway crosses beneath the Kun-Shi Railway. Due to the high requirements of railway track for settlement control, this article proposes the following technical measures for controlling the settlement based on the analysis of risks arising from the shield crossing railway: (1) Reinforcing the stratum of the region crossed by the shield in advance to achieve high ...

Abstract The Semmering Base Tunnel (SBT), with a total length of 27.3 km, is one the leading construction projects Baltic-Adriatic Railway Network. tunnel connects two federal provinces Lower Austria and Styria cuts through eastern part Alps. lot SBT 1.1-Tunnel Gloggnitz characterized by complex geological- hydro-geological architecture containing alternating competent geological structures, ma...

Abstract Grouting is an important method to reinforce soft coal roadway, and the presence of primary cracks in body has influence on grouting effect. With discrete element simulation method, process seam was simulated. The mechanism revealed, while fracture characteristics pressure effect analyzed. results demonstrated that involves stages seepage, rapid splitting, slow stability. Due cracks, d...