Abstract:Combining with a certain high[CD*2]rise building deep foundation pit of safety monitoring project, according to the specification and the associated practice, the alarm value of safety monitoring has been confirmed and the circuit of processing of data and information feedback has been drawn up. Main contents of safety monitoring and the situation of point arrangement have been introduced in this paper. By using high precision measuring instruments, monitoring data of excavation wall horizontal displacement, vertical displacement, road cracks and subsidence have been collected, analyzed and discussed.