Hydraulic bracket intelligent control method for adaptive support of fully mechanized coal face surrounding rock

Abstract

The invention discloses a hydraulic bracket intelligent control method for adaptive support of fully mechanized coal face surrounding rock. As for the problem that adaptability of a hydraulic bracketfixing structure cannot meet the surrounding rock dynamic support requirement, the method comprises the steps that firstly, original fixed parameter values (comprising the position of a vertical column hitch, a safety valve opening value and the like) which has decisive influence on adaptability of a hydraulic bracket are set to be adjustable through an adjusting device, and then the support strength, rigidity and stability of the hydraulic bracket are adaptively controlled through the adjusting device, so that the ability of the hydraulic bracket to adapt to an external surrounding rock condition is improved; and according to the dynamic change of the surrounding rock, by taking the variable pressure safety valve opening value, initial support force, the top beam column hitch position andthe like as control input variables, the support strength and the rigidity of the hydraulic bracket are adaptively adjusted, and by taking a vertical column, a balance jack and the like as control input variables, the stability of the hydraulic bracket is adaptively adjusted. According to the method, the adaptability and flexibility of a support system can be greatly enhanced, and the difficult problem of control over the working face surrounding rock under the complex mining condition is effectively solved.

Description

technical field [0001] The invention relates to an intelligent control method for a hydraulic support in a coal mining face. Specifically, by increasing and automatically adjusting the key structural parameters and dynamic parameters of the hydraulic support, the supporting strength, stiffness and stability of the hydraulic support are adaptively adjusted to meet the dynamic conditions of the surrounding rock. Intelligent control methods for support requirements. Background technique [0002] Hydraulic support is one of the core equipments of comprehensive mechanized mining in underground coal mines. It is mainly used to form the working space of the working face and push the complete set of equipment forward. During the production process, the hydraulic support is in direct contact with the surrounding rock of the working face (consisting of the roof, coal wall, floor and goaf gangue, which is a heterogeneous, discontinuous and unstable mechanical structure), and is subject...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem that the adaptability of the fixed structure of the hydraulic support cannot meet the demand for dynamic support of the surrounding rock, and the originally fixed value that has a decisive influence on the adaptability of the support is set as adjustable through the adjustment device, and on this basis, a An intelligent control method of hydraulic support for adaptive support of surrounding rock in fully mechanized mining face, solving the problem of surrounding rock control in complex mining conditions

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