Unattended drainage system and control method in coal mine

Abstract

The invention discloses an unattended drainage control system and a control method in a coal mine. The drainage system comprises a DSP (digital signal processor) module, a communication circuit moduleand a power supply module; an input end of the DSP module is connected with a digital quantity input isolation circuit module and a signal conditioning circuit module, the input end of the signal conditioning circuit module is connected with a temperature sensor, a vacuum degree sensor for detecting the vacuum degree of a water pump inlet, a flow sensor for detecting the flow of a drainage pipeline, a pressure sensor for detecting the pressure of a water outlet of the water pump and a liquid level sensor for detecting the water level in a water sump, and the output end of the DSP module is connected with a D / A (digital / analog) conversion circuit module, a display module and an acousto-optic alarm circuit module. The unattended drainage control system disclosed by the invention is reasonable in design, capable of realizing automatic drainage under a coal mine by combining a control method, reliable in drainage performance stability and good in use effect, and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety equipment, and in particular relates to an unattended drainage control system and a control method for an underground coal mine. Background technique [0002] The geographical environment of my country's coal mines is complex, such as the harsh production environment with high air humidity, high content of floating dust, and high content of corrosive gases, which leads to frequent occurrence of coal mine accidents. The hazards of permeation mainly involve casualties and damage to underground mining equipment in coal mines. Casualties caused by flooding accidents account for about 13.6% of the total number of accidents in coal mines each year, and the number of flooding accidents accounts for about 15.8% of the number of coal mine accidents. Frequent flooding accidents have caused the disappearance of many precious lives. When a water seepage accident occurs, some drainage equipment such...

AI Technical Summary

Problems solved by technology

[0004] 1. The judgment of the fault and the operation of the equipment are too dependent on the experience of the workers, the control of the drainage process is highly subjective, and there are potential safety hazards; the system data cannot be uploaded to the well dispatching center in time, which delays the best way to deal with the accident Timing; may lead to shortened service life of drainage equipment; labor intensity of workers is too high

[0005] 2. The water gushing phenomenon caused by the mine flooding accident is random and difficult to predict, and the law of the water level change process is nonlinear

Therefore, it is difficult to establish an accurate mathematical model for its change process, analyze its dynamic change process, and choose a control strategy suitable for the drainage system.

Images