Vault planing and milling collaborative continuous jet grouting diaphragm wall construction method

Abstract

The invention discloses a vault planing and milling collaborative continuous jet grouting diaphragm wall construction method which comprises the following steps: a long-arm excavator is adopted, sawteeth are arranged on a small arm, a plurality of air nozzles and / or slurry nozzles are mounted on the small arm, the air nozzles are used for spraying high-pressure airflow, and the slurry nozzles are used for spraying high-pressure slurry; flow guide grooves are formed in the two sides of the small arm, so that the gravel slurry cut by the sawteeth can flow backwards along the flow guide grooves; a scraper bucket is installed at the lower end of the small arm, the sawteeth are also installed on the back of the scraper bucket, when the scraper bucket and the small arm are pressed downwards, the scraper bucket mills the stratum and is combined with the air nozzles and the slurry nozzles which are installed on the scraper bucket to cut and flush the stratum, and the air nozzles and the slurry nozzles on the small arm form high-speed jet flow beams to pre-cut the stratum on the front side. During the lifting process of the scraper bucket and the small arm, the sawteeth vault to cut the stratum, and in cooperation with the fluid cutting action of the air nozzles and the slurry nozzles, the stratum is impacted, crushed and milled together. According to the vault planing and milling collaborative continuous jet grouting diaphragm wall construction method, vault planing and milling cooperative work can be realized, the stratum can be cut during lifting and pressing, and the efficiency is improved.

Description

technical field [0001] The present invention relates to the technical field of anti-seepage wall construction, and in particular to the construction method of arch top planing and milling cooperative continuous high-spray anti-seepage wall. The required application date is July 20, 2020, and the application number is 2020106965865. The priority of continuous high-spray cut-off wall construction method. Background technique [0002] The anti-seepage wall is an important structure in environmental protection engineering and water conservancy and hydropower engineering. It is mainly used for vertical anti-seepage of the peripheral closure of the landfill and the foundation of the dam. The traditional anti-seepage wall construction techniques mainly include hydraulic grab method, water jet wall construction method, high spray method, impact drilling method, deep mixing method and so on. Among them, the hydraulic grab method, the water-jet wall-building method, and the percussio...

AI Technical Summary

Problems solved by technology

However, due to the design characteristics of the excavator, the efficiency of the retreating construction mill to plan the soil layer is limited

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