Distributed grouting system for underground diaphragm wall

Abstract

The invention discloses a distributed grouting system for an underground diaphragm wall. The distributed grouting system comprises a vertical grouting pipe, a transverse grouting pipe, wall side grouting heads, wall bottom grouting heads, connecting sleeves, first tee joints and second tee joints; the vertical grouting pipe and the transverse grouting pipe are evenly distributed in the underground diaphragm wall and provided with the wall side grouting heads and the wall bottom grouting heads respectively; the vertical grouting pipe is connected with the wall side grouting heads through the connecting sleeves and the first tee joints; a grouting operation head is arranged in the vertical grouting pipe; the transverse grouting pipe is connected with the wall side grouting heads through the connecting sleeves and the second tee joints; the wall bottom grouting heads are connected to the bottom end of the vertical grouting pipe and the bottommost transverse grouting pipe through the connecting sleeves and the second tee joints; the wall side grouting heads face the outer side of the wall of the underground diaphragm wall; and the wall bottom grouting heads face the outer side of the wall bottom of the underground diaphragm wall. The distributed grouting system can be suitable for the uniform grouting process of the large-area underground diaphragm wall.

Description

technical field [0001] The invention relates to the technical field of underground diaphragm wall grouting, in particular to a distributed grouting system for an underground diaphragm wall. Background technique [0002] Diaphragm wall is a form of deep foundation with high bearing capacity and low settlement, which is widely used in bridges, major buildings and other projects. The construction of the underground diaphragm wall generally involves measures such as groove formation, lower reinforcement cage and pouring concrete. For deep foundations, the groove depth is generally deep, and mud retaining walls are required to keep the walls intact, which also brings some negative problems, such as the softening of the soil near the hole walls to form mud skins on the wall and soil sides, and The accumulation of sediment at the bottom of the trench is unavoidable during the construction of the trench, and the above problems seriously affect the bearing performance of the undergr...

AI Technical Summary

Problems solved by technology

However, the post-grouting construction of the existing underground diaphragm wall needs to arrange a number of pile side and pile bottom grouting pipes in the steel cage. There are many grouting pipes, uneven filling of grouting liquid, and differences in grouting effects at different positions. Major and other issues

Images