This article discusses the reasons of leakage of the underground continuous walls of the arcade of car dumper house,the fifth project of Qinhuangdao Coal Harbor,and introduces the preventive measures in construction and the repair of leakage of underground continuous walls.

How to predict the deformation of the support construction-underground continuous wall in the process of pi.

The bending moment of the front wall and the rear anchored diaphragm wall,the earth pressure.

32 berths in Jingtang Harbour District,the concrete used at the design elevation of the diaphragm wall of-1.

The paper describes the construction of underground diaphragm retaining walls,which had to be executed in backfilled sand and stones,and had to cut through the rubble mound foundation for the caissons adjacent to the diaphragm walls.

The common problems in the construction of underground continuous wall and the management;

Research on the quality control points of underground continuous wall;

Analysis of effect of different membership function on calculation of fuzzy reliability in underground continuous wall;

Construction techniques of diaphragms under special conditions;

Based on the analysis of a certain retaining and protecting for deep foundation excavation,several structural schemes including piles in row,bracing system,soil nailing wall and diaphragm are compared.

This paper presents the concept of dynamic strength reliability and dynamic rigidity reliability of retaining diaphragm during construction.