Acquisition method of the adjustment rules of the air outlet of the air duct in the optimal dust field of fully mechanized excavation working face

Abstract

The present invention discloses a method for obtaining regulation rules of an air outlet of a wind tunnel for an optimal dust field of a fully mechanized winning face. The method comprises the following steps of: obtaining data; establishing an initial regulation and control decision information system of a wind field of a wind tunnel in a coal mine fully mechanized winning face; establishing a discretization regulation and control decision information system; performing reduction of a discretization regulation and control decision information list of a wind field of an air outlet of the coalmine wind tunnel; and performing obtaining and analysis when rules are expressed. In the invention, through different tunnelling phases of a concrete coal main tunnelling working face, a wind-flow adaptive regulation and control rule algorithm is researched according to influences of changing of wind tunnel extension distances, diameters and direction angels and width and height of a tunnel on dust concentration; and moreover, about the coal main fully mechanized winning face decision information system, various data of a dust field such as the changing of the extension distances, the diameters and the direction angles of the wind tunnel of the coal mine fully mechanized winning face and the width and the height of the tunnel are calculated and analyzed, an optimum regulation and control rule is extracted through adoption of an obtaining algorithm of a regulation and control rule so as to realize safe and green ventilation of the fully mechanized winning face.

Description

technical field [0001] The invention belongs to the technical field of adjustment and control of an air outlet of a coal mine air duct, and in particular relates to a method for obtaining an adjustment rule of an air duct air outlet in an optimal dust field of a fully mechanized excavation working face. Background technique [0002] In recent years, with the expansion of fully-mechanized coal mining face and ultra-long-distance excavation, the amount of gas gushing and dust production has increased significantly, and the potential safety hazards and environmental pollution risks of excavation roadways have increased. Extensive "total ventilation" control mode It can no longer fully adapt to the current development. Therefore, there is a need for refined management of the distribution of gas and dust migration in tunneling roadways. [0003] Insufficient air volume or unreasonable distribution will not only cause the concentration of gas and coal dust to exceed the standard, ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the expansion of fully-mechanized coal tunnel excavation and ultra-long-distance excavation, the amount of gas gushing and dust production has increased significantly, and the potential safety hazards and environmental pollution risks of excavation roadways have increased. The extensive "total ventilation" control mode It can no longer fully adapt to the current development. Therefore, there is a need for refined management of the distribution of gas and dust migration in tunneling roadways

[0003] Insufficient air volume or unreasonable distribution will not only cause the concentration of gas and coal dust to exceed the standard, but also cause the concentration of respirable dust in the area where the miners are active to be too high, resulting in a high rate of pneumoconiosis among tunneling workers

Excessive air volume is not conducive to the requirements of energy saving, and it is easy to cause circulating air. There have been phenomena such as miners' helmets being blown away and excessive wind on the neck causing physical discomfort to tunneling workers.

Images