Method for fully stirring water and material of sprayed concrete

A technology of shotcrete and concrete, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc. It can solve the problems of reducing the strength of shotcrete, harming the health of workers, polluting underground air and working environment, and improving the air and working environment. , improve strength and work efficiency, and prevent dry spots from being dense

Inactive Publication Date: 2010-02-17
SHANGHAI DATUN ENERGY
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 shor...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for fully stirring water and material of sprayed concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] As shown in the accompanying drawings, the humidifying device used in the present invention is: a two-way water ring 2 with two water inlets and a three-section different-diameter pipe 3 with an inner diameter larger than the inner diameter of the feeding pipe are arranged on the feeding pipe 1 near the nozzle 7, and the two-way The water inlets at both ends of the water ring are inclined inwardly and communicate with the inner cavity of the feed pipe, and the reducer 3 is installed on the feed pipe section between the water inlets at both ends of the two-way water ring. Water is supplied to the two-way water ring from the water supply pipe 6, and a regulating water valve 5 is arranged on it.

[0014] It is used in the construction process of anchor shotcrete roadway in Kongzhuang Coal Mine of Shanghai Datun Energy Co., Ltd. The specific method is:

[0015] Part of the mixing water is added to the pre-feeding, and the amount of mixing water can be adjusted appropriatel...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21D11/10
Inventor 张永进陈季斌胡金华
Owner SHANGHAI DATUN ENERGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap