Device and method capable of determining real-time consolidation penetration parameters of tailing sands

Abstract

The invention discloses a device and a method capable of determining real-time consolidation penetration parameters of tailing sands. The device comprises a soil sample consolidation system, a pressure pulse method based real-time penetrability measuring system, a flow method based real-time penetrability measuring system, and a data acquisition processing system. The left end of the soil sample consolidation system is connected with the flow method based real-time penetrability measuring system through a left end air outlet and a left end air inlet. The right end of the soil sample consolidation system is connected with the pressure pulse method based real-time penetrability measuring system through a right end air outlet and a right end air inlet. According to the device and the method capable of determining real-time consolidation penetration parameters of the tailing sands, air is used as a penetration medium, so that no obvious influence is generated on drainage of the soil samplein a consolidation process, a reliable basis can be provided for the penetrability of the soil sample, the error of a penetrability test can be effectively reduced, tailing sands with small particlesize can be measured through the pressure pulse method based real-time penetrability system, and a measuring problem that the penetrability of the tailing sands with small particle size is difficult to measure in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of test equipment in the field of geotechnical tests, and in particular relates to a device and method capable of measuring real-time consolidation and penetration parameters of tailings sand. Background technique [0002] Tailings sand is a kind of industrial solid waste that is discharged after a series of processing and treatment of metal ores. The main and most economical treatment method for tailings sand produced in the current mining area is to accumulate the tailings slurry generated by mining near the mining area. On favorable terrain, tailings dams are formed after natural dehydration. With the development of science and technology, in order to improve the recovery rate of metal ore, the mineral processing tools are more refined and mature, resulting in the particle radius of the tailings sand discharged from the processing plant is getting smaller and smaller, so that the permeability is also chan...

AI Technical Summary

Problems solved by technology

At present, most of the consolidation-permeability joint measurement devices can only measure the permeability of the samples before and after consolidation, and cannot reflect the dynamic change process and characteristics of the tailings sand permeability during the consolidation process very well. Changes in pore water pressure and soil density during consolidation cannot be well reflected

After the fine-grained tailings are consolidated, the particles are arranged more densely. At this time, it is difficult to measure the real permeability by using the flow method, and there will be large errors, and even the accurate permeability cannot be obtained.

In addition, since the tailings sand is usually in a mixed state of air and water during the consolidation process, and conventional consolidation infiltration devices usually use water as the infiltration medium, however, during the consolidation process, the water in the gaps between soil particles is gradually squeezed out. It is found that a part of the water in the soil sample and the water in the infiltration medium are discharged together, so that we cannot obtain the accurate permeability of the soil sample, so the measured test data cannot provide a reliable reference and basis for practical engineering applications

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