SAFETY CONSTRUCTION TECHNIQUE OF SHIELD CROSSING RAILWAY

When shield construction crosses railway,groun d settlement and shield thrust will affect train movement,so it is very important to control safety construction.Based on experiences in construction of Beijing Subway Line 4 crossing Beijing-Shanhaiguan railway,high-pressure rotary spraying pile reinforcing technique is adopted for soil pressure balance shield crossing in sandy cobble stratum,and shield parameter control technique is used to monitor the operation of Beijing-Shanhaiguan railway,guarantee safety construction and avoid risks.