Jet-type hole forming tool and hole forming construction method

Abstract

The invention provides a jet-type hole forming tool. The jet-type hole forming tool comprises a Luoyang shovel with a hollow shovel handle, an air supply pipeline is connected to an air inlet of the tail end of the shovel handle, and an air blowing hole facing to a shovel body is formed in the other end of the shovel handle. The width of the shovel body is greater than the diameter of the shovel handle. The jet-type hole forming tool uses the shovel body at the front end of the Luoyang shovel to cut soil mass, the soil mass cut by the Luoyang shovel is blown by an air jet formed by high pressure air generated by an air compressor, the soil mass is discharged from a gap between the Luoyang shovel and hole bodies, disturbance to the soil mass is less, hole collapse is not prone to being caused, the hole collapse rate is low, power consumption is low, energy is saved, the construction speed is high, hole forming efficiency is high, and the construction period can be effectively shortened.Meanwhile, the number of construction personnel is small, the use position of equipment is flexible, a required working face is small, and disassembly and installation are convenient.

Description

technical field [0001] The invention belongs to the technical field of underground excavation tunnel construction, and in particular relates to a jet-type hole-forming tool and a hole-forming construction method. Background technique [0002] With the vigorous development of underground excavation tunnels, the current situation that the overall technology of tunnel mechanized construction in my country is relatively backward is becoming more and more prominent. Due to the impact of construction costs, some projects still use the relatively primitive and backward construction method of manual excavation, which requires a lot of labor and time, high labor costs, and low efficiency. Even with the traditional large pipe shed drilling rig construction method, there are many disadvantages, such as: large working surface, large hole collapse rate, high construction cost, long construction period, etc., which urgently need to be improved. Contents of the invention [0003] In vie...

AI Technical Summary

Problems solved by technology

Due to the influence of construction funds, some projects still adopt the relatively primitive and backward construction method of manual excavation, which requires a lot of labor and time, high labor costs, and low efficiency

Even with the traditional large pipe shed drilling rig construction method, there are many disadvantages, such as: large working surface, large hole collapse rate, high construction cost, long construction period, etc., which urgently need to be improved

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