A method for optimal layout of air-cooling facilities in high-temperature mines
A layout method and air-cooling technology, which is applied in mine/tunnel ventilation, mining equipment, earthwork drilling, etc., can solve the problems of multiple relocation of air-cooling facilities, increased labor intensity of workers, and lack of scientific basis
Inactive Publication Date: 2019-08-30
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology
However, most mines often adopt empirical methods for the arrangement of air-cooling facilities, which lacks sufficient scientific basis, often resulting in the need to move the air-cooling facilities multiple times within a period of time, greatly increasing the labor intensity of workers
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Embodiment Construction
[0014] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0015] Such as figure 1 Shown is a schematic diagram of the layout of a single air-cooling facility in a high-temperature mine air intake channel, including the air intake channel 01, the surrounding rock of the roadway 02, the local fan 03, the air cooler 04, the air duct 05, and the air flow in the duct 06 , wind outside the air duct 07, coal mining face 08. The air-cooling facility is composed of three parts: a local ventilator 03, an air cooler 04, and an air duct 05. The optimization method of the present invention is a thermodynamic system formed between the outlet section A of the air cooler 04 and the outlet section B of the air duct 05. As the research object, the relevant thermal parameters of the thermal system were obtained through on-site actual investigation, mainly including the temperature, humidity, and air mass flow rate of t...
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The invention discloses an optimized arrangement method of an air cooling facility for a high-temperature mine air inlet crossheading. The air cooling facility comprises three parts of a local ventilator, an air cooler and an air duct. According to the optimized calculation method, the part from the outlet fracture surface of the air cooler to the outlet fracture surface of the air duct serves as a thermodynamic system, the coupled thermal exchange relationship among an airflow inside the air duct, an air flow outside the air duct and roadway surrounding rocks is analyzed according to the energy conservation law, and thermal balance equations of the air flow inside the air duct and the air flow outside the air duct are built correspondingly; and the thermal balance equations are subjected to numerical discretization solving through the finite difference method, and the air flow temperature along the ways inside the air duct and outside the air duct and the air flow temperature after the air flows inside the air duct and outside the air duct are mixed can be obtained. According to the optimized calculation method, optimized calculation can be achieved on the arranging position and mode for the single air cooling facility or the multiple air cooling facilities, and calculation optimization for the distance between the air cooler and the coal mining working face, the length of the air duct connected behind the air cooler and distanced positions of all the air cooling facilities during arrangement of the multiple air cooling facilities can be conducted.
Description
technical field [0001] The invention relates to a technical method applied in the field of mine cooling, in particular to a method for optimizing the arrangement of air-cooling facilities in a high-temperature mine. Background technique [0002] With the gradual increase of coal mining depth, the problem of mine heat damage has become increasingly prominent, and the coal mining face is one of the most serious threats of high temperature heat damage underground. At present, the cooling and cooling measures of the coal mining face are mainly to cool down the air temperature of the coal mining face by arranging reasonable air-cooling facilities in the air inlet trough, so as to cool the working face, so the air cooling facilities in the air inlet trough The layout position, number and the length of the matching air duct all have a great influence on the inlet air temperature of the coal mining face. Therefore, it is particularly important to scientifically and rationally optim...
Claims
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IPC IPC(8): E21F1/04E21F3/00
Inventor 吴建松宋怀涛孔松
Owner CHINA UNIV OF MINING & TECH (BEIJING)