Ultrasonic monitoring method for concentration of paste filling slurry conveyed in pipeline

Abstract

The invention relates to an ultrasonic monitoring method for concentration of paste filling slurry conveyed in a pipeline. A system comprises a probe control system, a data transmission system, a data receiving system and a data acquisition system. An acoustic emitter 4 and an acoustic receiver 8 are arranged at two corresponding test points on two sides of a transportation pipeline 6 through retaining rings 5 and screwed and fixed with a bolt 9. Acoustic test data are transmitted to an ultrasonic tester 2 through an acoustic test line 3 and transmitted to a digital display 1 through an acoustic data line 10, and the concentration of the paste filling slurry in the pipeline is displayed on a screen of the digital display 1. The ultrasonic monitoring method has the advantages that a non-destructive testing technology is adopted, the operation is simple, convenient, safe and rapid, the concentration of the paste filling slurry in the pipeline can be monitored in real time, and the defect that the concentration of the paste filling slurry in the pipeline is deduced directly according to slurry preparation concentration while the influence of environment temperature on the concentration of the paste filling slurry in a transportation process in the mine pipeline is neglected in the traditional monitoring method is overcome.

Description

technical field [0001] The invention relates to a method for ultrasonically monitoring the concentration of paste filling material slurry in pipeline transportation. Background technique [0002] Mine paste filling slurry is an artificial composite slurry prepared by water, tailings or gangue matrix and cementitious materials in a certain proportion. It is transported to the mine filling area through pipelines for mine filling. With the improvement of national awareness of environmental protection and the imminent introduction of the "13th Five-Year Plan", green mining of mines has become more and more important, and mine filling is one of the most effective methods to control the surface subsidence in mining areas. How to do a good job of filling is particularly important. As an important part of mine filling, paste filling slurry transportation is very necessary to monitor its concentration during transportation. The traditional method is mainly to infer the slurry concen...

AI Technical Summary

Problems solved by technology

The traditional method is mainly to infer the slurry concentration of pipeline transportation through the slurry concentration, which is more suitable for some mines with better transportation environment, but for some high-temperature mines, the paste filling slurry will inevitably lose water during pipeline transportation resulting in an increase in slurry concentration

If the change of its concentration cannot be monitored in time, when it reaches a critical value, the pipeline may be blocked and the slurry cannot be transported normally.

Images