Method for determining mine roadway network fire extinguishing plugging position

Abstract

The invention provides a method for determining a mine roadway network fire extinguishing plugging position. A single-point cut set method is adopted; the single-point cut set method is characterizedin that a roadway network vertex set S is shown in the specification, wherein V is a roadway network node set; wherein the fire position is a node v0, the single-point cut set is an edge set, the edgeset is expressed as a roadway blocking set in the fire period, and after the edge set is deleted, the v0 is not communicated with the S, that is, the fire position is not communicated with other tunnels, that is, an air door of the tunnel where the fire position is located is closed, and fire spreading is prevented. According to the method, a single-point cut set algorithm is utilized, a scientific basis is provided for emergency fire extinguishing in the fire period of the mine roadway network, a theoretical basis is provided for formulation of a fire extinguishing scheme, meanwhile, a deepexploration algorithm is adopted, all paths of the mine roadway network are determined, and missing is avoided. According to the method, a scientific, comprehensive and accurate fire extinguishing scheme is provided for the mine fire period, and the automatic air doors and the blocking air bag devices of the roadways of the roadway network should be closed in the fire period are scientifically pointed out in detail.

Description

technical field [0001] The invention belongs to the field of mine safety, and relates to a method for determining the fire extinguishing and blocking position of a mine roadway network. Background technique [0002] A stable and reliable ventilation system is an important guarantee for safe production in mines. Emergency fire extinguishing during mine fires is the most effective way to reduce casualties and prevent secondary accidents. Scholars at home and abroad have carried out a lot of research work on the wind flow state and smoke diffusion law during mine fires, and have also invented automatic dampers and sealing airbag equipment and technologies during various fire periods. At the same time, they have used big data and simulation technology to analyze Predict the scope of fire occurrence, the diffusion path of smoke, dust and harmful gases, and assist in the planning of rescue and avoidance routes. However, it has never been proposed which automatic dampers and blocki...

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Problems solved by technology

Scholars at home and abroad have carried out a lot of research work on the wind flow state and smoke diffusion law during mine fires, and have also invented automatic dampers and sealing airbag equipment and technologies during various fire periods. At the same time, they have used big data and simulation technology to analyze Predict the scope of fire occurrence, the diffusion path of smoke, dust and harmful gases, and assist in the planning of rescue and avoidance routes. However, it has never been proposed which automatic dampers and blocking airbag devices should be closed and which should be opened during a fire. It is only judged based on the experience of experts. Some scholars have proposed an automatic damper system based on mine smoke monitoring. However, due to the complexity of the mine ventilation system, the smoke is disordered during a fire, and the automatic adjustment of the damper only by means of smoke monitoring cannot achieve the effect of fire extinguishing. If the damper is not adjusted correctly , may accelerate the spread of the fire and cause more serious consequences

[0003] Therefore, with the goal of reducing the speed of fire spread and greatly reducing the impact of fire, it is necessary to propose a method that can determine the location of fire extinguishing and sealing in mine lane network to solve the problem of closing and closing of automatic dampers and sealing airbag devices that are urgently needed to be improved. open question

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