Grouting anchor rod construction process for supporting side slope

Abstract

The invention provides a grouting anchor rod construction process for supporting a side slope. The grouting anchor rod construction process comprises the following steps that an anchor hole is drilled in the slope surface of the side slope, all sundries in the anchor hole are removed, and the anchor hole is divided into a front section and a rear section; a grouting pipe extends into the anchor hole; cement paste is injected into the anchor hole through the grouting pipe, and after the front section is filled with the cement paste, the grouting pipe is pulled out at a constant speed while the cement paste continues to be injected; and after an anchor rod is inserted into the anchor hole, a tray sleeves the anchor rod, a locking nut is screwed, and the tray covers the hole opening of the anchor hole. According to the technical scheme of the grouting anchor rod construction process for supporting the side slope, the anchor hole is divided into the two ends to be grouted in sequence, the grouting pipe is pulled out at the constant speed while the rear section is grouted, cement paste can be filled more compactly, the anchor rod supporting strength is improved, and potential safety hazards are reduced; and the waterproof performance of the cement paste is improved by selecting the reasonable water cement ratio, groundwater is prevented from permeating into the cement paste, and the supporting effect is improved.

Description

technical field [0001] The invention belongs to the technical field of side slope support, in particular to a construction technique of grouting anchor rods for supporting side slopes. Background technique [0002] At present, the use of technical equipment such as bolts and anchor cables has been widely used in construction engineering slope support operations. Among them, in the process of bolt support operations, in order to increase the strength of bolt support and reduce the cost of bolt construction , the grouting anchor construction process used to support the slope is often used to replace the solid anchor support process. This grouting anchor construction process used to support the slope generally consists of a rod body, a tray and a lock nut When extending the anchor rod into the anchor hole, inject appropriate cement slurry into the gap between the anchor rod and the anchor hole. When the cement slurry solidifies, the anchor rod and the surrounding rock wall are ...

AI Technical Summary

Problems solved by technology

However, during the construction process of the existing grouting bolt construction technology for supporting the slope, the cement slurry often flies into the anchor hole by injection, or the grouting pipe is too far away from the anchor hole during the grouting process. Or if the grouting pipe is pulled out too fast, the air in the environment will be mixed into the cement slurry, and air bubbles will be generated in the cement slurry, so that the cement slurry cannot be filled densely, affecting the effect of bolt support. Slope support poses a safety hazard

Images