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Filling method for reducing onway resistance losses of paste-like slurry

A paste filling and resistance loss technology is applied in the filling field of paste filling and reducing the resistance loss along the path of paste slurry, which can solve the problem of pipeline burst, increase of working pressure of paste filling pump and large resistance loss along the path. and other problems to achieve the effect of improving compressive strength, reducing paste pump pressure and increasing slump

Active Publication Date: 2012-01-18
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the paste pumping filling system completes the filling operation from the surface through filling small wells, filling boreholes, and main filling roadways to the stope. The resistance loss along the way is very large, which increases the working pressure of the paste filling pump, which in turn causes pipeline bursts and joint leakage, etc., which seriously affects the normal operation of the paste filling system and restricts the progress and development of paste filling technology.

Method used

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  • Filling method for reducing onway resistance losses of paste-like slurry
  • Filling method for reducing onway resistance losses of paste-like slurry
  • Filling method for reducing onway resistance losses of paste-like slurry

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Adopt the existing paste filling system, set an iron container with a size of 3000mm * 3000mm * 1500mm above the stirring tank of the paste filling system, and connect the container with an electric flow pump; adopt the existing method to prepare a weight concentration of 80 % paste slurry, the weight ratio of rod grinding and tailing sand in the paste slurry is 1:1, and the paste slurry contains 300kg cement and 100kg fly ash per cubic meter. When adding cement, control the amount of cement The flow rate is 35t / h; the prepared paste slurry is sent into an iron container; the electric flow pump is turned on, and the JKJ-NF type high-efficiency pumping water reducer is added to the container to form a mixed paste filling slurry; The weight of the water-reducing agent is 1.5% of the total weight of the mixed paste filling paste slurry; send the formed mixed paste slurry into the stirring tank of the filling system, stir evenly, and control the temperature in the stirring t...

Embodiment 2

[0028] Using the existing paste filling system, set an iron container with a size of 3000mm×3000mm×1500mm above the mixing tank of the paste filling system, and connect the container with an electric flow pump; use the existing method to prepare a weight concentration of 78% The paste slurry, the weight ratio of rod grinding and tailing sand in the paste slurry is 1.5:1, the paste slurry contains 300kg cement and 150kg fly ash per cubic meter, control the flow of cement when adding cement It is 35t / h; send the prepared paste slurry into the container; turn on the electric flow pump, and add JKJ-NF high-efficiency pumping water reducer into the container to form a mixed paste filling slurry; the addition and subtraction The weight of the water agent is 1% of the total weight of the mixed paste filling paste slurry; the formed mixed paste slurry is sent to the stirring tank of the filling system, stirred evenly, and the temperature in the stirring tank is controlled to be 30 °C a...

Embodiment 3

[0034]Using the existing paste filling system, an iron container with a size of 3000mm×3000mm×1500mm is set above the stirring tank of the paste filling system, and the container is connected with an electric flow pump; the weight concentration of 79% is prepared by using the existing method The paste slurry has a weight ratio of rod scrub and tailings of 1.25:1. Each cubic meter of the paste slurry contains 300kg of cement and 125kg of fly ash. When adding cement, control the flow of cement. is 35t / h; the prepared paste slurry is sent into the container; the electric flow pump is turned on, and the JKJ-NF type high-efficiency pumping water reducing agent is added into the container to form a mixed paste filling slurry; the added and subtracted The weight of the water agent is 1.25% of the total weight of the mixed paste filling paste slurry; the mixed paste slurry is sent into the stirring tank of the filling system, stirred evenly, and the temperature in the stirring tank is ...

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Abstract

The invention provides a filling method for reducing onway resistance losses of paste-like slurry. In the method, a container connected with a motor-driven flow pump is arranged above an agitator bath of a paste-like filling system; an existing method is used to prepare the paste-like slurry and the paste-like slurry is delivered to the container; a water reducing agent is added to the container to obtain mixed paste-like filling slurry; the mixed paste-like filling slurry is delivered to the agitator bath and stirred evenly, wherein the temperature and the humidity in the agitator bath are controlled to be 28-30 DEG C and 75-85% respectively, thus full tailing paste-like slurry can be prepared; and the paste-like filling system transmits the full tailing paste-like slurry to a stope so as to fill the filling. The filling method is utilized to improve the fluidity of the paste-like slurry, reduce the paste-like pump voltage, enhance the compression strength and the slump, realize the remote transmission of the paste-like slurry, be beneficial to extending the paste-like filling system to a deep mining system and improve the strengths of the fillers at different ages especially the early age, and the filling method is a new way and method for broadening the deep mining field by using the paste-like filling technology in China.

Description

technical field [0001] The invention belongs to the technical field of mine filling, and relates to a paste filling method, in particular to a filling method for reducing the resistance loss of paste slurry along the process, which can effectively reduce the resistance loss of paste slurry along the process and improve paste filling. body mass. Background technique [0002] Paste filling technology is the core filling technology that has been concerned by the filling industry for many years, and it is also the most discussed filling technology in every international filling mining conference. From the perspective of global and long-term development, it is the main direction of filling mining technology development. However, the paste pumping filling system completes the filling operation from the surface through filling small wells, filling boreholes, and main filling roadways to the stope. The resistance loss along the way is very large, which increases the working pressur...

Claims

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Application Information

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IPC IPC(8): E21F15/00C04B28/00
Inventor 张海军杨志强
Owner JINCHUAN GROUP LIMITED
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