Retaining and Protecting for foundation pit,Design of Dewatering in Foundation Pit,and Construction Emphasis of CCTV Central Buildings

Taking the foundation pit of CCTV Central Buildings as an example,this paper introduces the retaining and protecting,design dewatering,construction emphasis and difficult of the deep and big foundation pit with complex elevation and underground water,and analyzes in detail the characteristics of the retaining and protecting,dewatering in foundation pit.This engineering design and construction experience may be applied widely into the deep foundation pit construction,and are referenced significant to many design and construction personnel.