Backpressure monitoring system and method of hydraulic support

Abstract

The invention discloses a backpressure monitoring system and method of a hydraulic support. The system comprises multiple pressure sensors, a hydraulic support backpressure data collection and analysis device and a hydraulic support backpressure monitoring upper computer. The multiple pressure sensors are distributed on the upper surface, used for being in contact with surrounding rock, of the hydraulic support and are used for monitoring backpressure data on the hydraulic support in real time. The hydraulic support backpressure data collection and analysis device collects the backpressure data monitored by the pressure sensors and sends the backpressure data to the hydraulic support backpressure monitoring upper computer. The hydraulic support backpressure monitoring upper computer receives the backpressure data and analyzes and processes the backpressure data according to the mathematic interpolation algorithm, and a monitoring result is obtained. By means of the backpressure monitoring system and method, backpressure monitoring and data graphical interface displaying of the whole upper surface, in contact with surrounding rock, of the hydraulic support can be achieved, the result is visual and easy to understand, the hydraulic support can be controlled conveniently by workers to act, and a top plate is supported better.

Description

technical field [0001] The present application relates to the technical field of hydraulic supports, in particular to a hydraulic support back pressure monitoring system and method. Background technique [0002] The existing underground coal mining coal mining face adopts hydraulic support to maintain the safety of the working space. The hydraulic support fills the column with high-pressure liquid, and then drives the support top beam, cover beam and other actions to maintain a certain contact pressure with the surrounding rock. The effective contact between multiple hydraulic supports and the surrounding rock can realize the normal pulling and moving of a single support and the normal moving of the scraper conveyor, thus ensuring the normal mining process of the coal mining face. [0003] At present, the force monitoring of the existing hydraulic support is mainly for the monitoring of the column oil cylinder, balance oil cylinder and other components, which can only realiz...

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Problems solved by technology

[0003] At present, the force monitoring of the existing hydraulic support is mainly for the monitoring of the column oil cylinder, balance oil cylinder and other components, which can only realize the pressure monitoring of the column oil cylinder, balance oil cylinder, etc., and the force of the reaction is only the structural point where the oil cylinder is located. The passive stress situation cannot reflect the force on the contact surface between the entire support and the surrounding rock, and it is impossible to grasp its force distribution. When the support is subjected to a dangerous state such as partial load, the state of the support cannot be adjusted in time, which may Reduce the life of the stent or even cause a safety accident

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