Abstract: The concept of “diaphragm wall with pre-stressed vertical bolts” is put forward in this paper,and its functional mechanism is analyzed.According to a practical project,the slope stabilities before and after construction of the wall are analyzed contrastively by analysis of geo-technology software.The results show that slip coefficient is increased markedly by 34.8%,and safety factor against sliping is improved by 16.8%,leading to the stability of wall enhanced.After completion of this scheme,field monitoring revealed that the slope and the diaphragm wall are very stable,and the pit discharge decreases evidently,so the diaphragm wall with pre-stressed vertical bolts is worthy to be popularized widely in the similar projects.

Key words:  Pre stressed anchor bar, Underground , continuous wall, Side slope reinforcement