Construction method for penetrating block stone layer of pore-forming system of high-pressure jet grouting pile

Abstract

The invention discloses a construction method for a penetrating block stone layer of a pore-forming system of a high-pressure jet grouting pile, and belongs to the technical field of building construction. The pore-forming system comprises an anchor drilling rig, a geological drilling rig and high-pressure jet grouting equipment. The construction method comprises the following steps of: carrying out stone-breaking and digging on the block stone layer by utilizing the anchor drilling rig; continuously digging by the geological drilling rig; and finally, carrying out high-pressure jet grouting pile construction by high-pressure jet grouting equipment. According to the construction method disclosed by the invention, with the adoption of a construction process of adopting the anchor drilling rig for stone-breaking and digging, and adopting the high-pressure jet grouting equipment for grouting, construction of a high-pressure jet grouting pile cement mixture part is completed, so that the pore-forming problem of the high-pressure jet grouting pile in the block stone layer is solved very well. By introducing a stone-penetrating and digging system of the anchor drilling rig, the application rope of the high-pressure get grouting pile is greatly expanded, and the high-pressure jet grouting pile is proved to be feasible and effective in reinforcement treatment of a deep foundation comprising the block stone layer, so that valuable experience is provided for carrying out jet grouting pile construction or other foundation treatment construction in a geological zone containing the block stone layer in future.

Description

technical field [0001] The invention relates to a pore-forming system, in particular to a construction method for a high-pressure rotary grouting pile pore-forming system to pass through a rock layer, and belongs to the technical field of building construction. Background technique [0002] High-pressure rotary grouting piles use high-pressure rotating nozzles to spray cement slurry into the soil layer and mix with the soil to form a continuous lapped cement reinforcement. It has the advantages of less construction area, less vibration, and lower noise. [0003] In previous projects, the construction of high-pressure rotary grouting piles was done by rotary grouting drilling rigs, and the soil was required to be soft and the soil was generally sandy or clay. However, when there is artificial throwing and filling of stone layers within the construction scope, the rotary jet drilling machine cannot directly drill into the hole, which will seriously affect the construction prog...

AI Technical Summary

Problems solved by technology

However, when there is a rock layer artificially filled in the construction area, the rotary jet drilling machine cannot directly drill into the hole, which will seriously affect the construction progress and construction quality.