Control method for emptying air in underground filling riser by using cut-off valve

Abstract

The invention relates to a control method for emptying air in an underground filling riser by using a cut-off valve. The control method comprises a hydraulic pump station, the cut-off valve, a displacement sensor and a PLC (Programmable Logic Controller) control system, and is characterized in that the PLC control system is connected with the hydraulic pump station and the cut-off valve through control cables respectively, wherein the hydraulic pump station is connected with the cut-off valve through an oil pipe; a real-time numerical value is transferred to the PLC control system by the displacement sensor which is placed on the cut-off valve through an analog module; and the size of the opening of the cut-off valve is controlled by the PLC control system according to the real-time numerical value transferred by the displacement sensor to empty the air in the underground filling riser. The cut-off valve is hydraulically controlled and the size of the opening of the valve is accurately measured through the displacement sensor, and then the specific opening of the valve is controlled by the PLC control system to facilitate emptying of the air in the underground filling riser.

Description

technical field [0001] The invention relates to a control method for emptying the air in the underground filling standpipe, in particular to a control method for emptying the air in the underground filling standpipe by using a shut-off valve, and belongs to the technical field of mining filling. Background technique [0002] At present, because the mining under some special conditions will have a very serious impact on surface buildings, roads, dams, etc., more and more attention has been paid to underground filling. However, the paste filling method is difficult to carry out underground due to its high strength after filling. It has been widely used due to its advantages such as dehydration, but the material conveyed by the paste filling method is heterogeneous, and gas is easily generated at the pipe standpipe to cause pipe blockage. Once the pipe is blocked, it will have a huge impact on the entire filling system. , therefore, emptying the air at the standpipe is of great...

AI Technical Summary

Problems solved by technology

[0002]At present, because mining under some special conditions will have a very serious impact on surface buildings, roads, dams, etc., more and more attention is paid to underground filling , and the paste filling method has been widely used due to the advantages of high strength after filling and not easy to dehydrate underground. Once the pipe is blocked, it will have a huge impact on the entire filling system. Therefore, emptying the air at the standpipe is of great significance to the operation of the entire filling system

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