Method for fully stirring water and material of sprayed concrete

Abstract

The invention discloses a method for fully stirring water and material of sprayed concrete, belonging to the technology of mine anchoring spray. A Zeng-type device composed of a bidirectional water ring and a reducing pipe is arranged on the position of a concrete shotcrete machine feed delivery pipe, which is near a spray head; a proper amount of mixing water is added into material in advance; when the mixed material passes through a first water adding port, the mixed material is firstly prewetted and rotates clockwise; the rotary mixed material enters the reducing pipe to generate vortex soas to further stir the mixed material; when the fully stirred mixed material passes through a second water adding port, water force anticlockwise rotates, so that the mixed material changes the rotation direction to form turbulent flow, and then, the mixed material is fully stirred to cause the mixed material to have enough humidity and water content. The invention has the effect that modulus of resilience of dust under the shaft is greatly reduced, air and working environment under the shaft is improved, the phenomenon of uncompacted dry spot on the surface of the spraying layer is stopped, and the strength and working efficiency of the sprayed concrete are improved.

Description

technical field [0001] The invention relates to a concrete mixing method, in particular to a method for fully mixing sprayed concrete water and materials. It is especially suitable for use in all places where shotcrete is used in the bolt-shotcrete support process of mines. technical background [0002] Concrete shotcrete machine is one of the main equipments for mine anchor shotcrete support construction. Whether its performance is good or not is directly related to project quality, material cost, work efficiency, workers' health and safety production. At present, the domestic anchor shotcrete support For the concrete spraying machine used for maintenance, the water for spraying concrete is added at the nozzle. The mixing time of water and material is very short, and it is not easy to mix wet and uniform. In this way, the amount of dust and rebound during the spraying process is large. It seriously pollutes the underground air and working environment, causing great harm to...

AI Technical Summary

Problems solved by technology

[0002] Concrete shotcrete machine is one of the main equipments for mine anchor shotcrete support construction. Whether its performance is good or not is directly related to project quality, material cost, work efficiency, workers' health and safety production. At present, the domestic anchor shotcrete support For the concrete spraying machine used for maintenance, the water for spraying concrete is added at the nozzle. The mixing time of water and material is very short, and it is not easy to mix wet and uniform. In this way, the amount of dust and rebound during the spraying process is large. It seriously pollutes the underground air and working environment, causing great harm to the health of employees, easily causing occupational diseases such as silicosis, and causing a lot of waste of material resources. Not only that, but also the phenomenon of dry spots on the surface of the spray layer. , greatly reducing the strength of shotcrete

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