CN107366547A - A kind of high-temperature mine air intake crossheading air cooling facility optimization placement method - Google Patents
A kind of high-temperature mine air intake crossheading air cooling facility optimization placement method Download PDFInfo
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- CN107366547A CN107366547A CN201610318416.7A CN201610318416A CN107366547A CN 107366547 A CN107366547 A CN 107366547A CN 201610318416 A CN201610318416 A CN 201610318416A CN 107366547 A CN107366547 A CN 107366547A
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- air
- air duct
- admirable
- distinguished
- cooling facility
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
Abstract
The invention discloses a kind of high-temperature mine air intake crossheading air cooling facility optimization placement method, the air cooling facility includes booster, air cooler, air duct three parts, the optimized calculation method is using air cooler Outlet Section to air duct Outlet Section as therrmodynamic system, according to distinguished and admirable in law of conservation of energy analysis air duct, coupling heat exchange relationship outside air duct between distinguished and admirable and roadway surrounding rock three, establish respectively in air duct, outer distinguished and admirable equation of heat balance, numerical discretization solution is carried out to the equation of heat balance using finite difference calculus, can obtain in air duct and air duct outer journey airflow temperature and air duct in distinguished and admirable mixed airflow temperature outside distinguished and admirable and air duct.The optimized calculation method can realize that the optimization to separate unit or more air cooling facility positions and mode calculates, and each air cooling facility carries out calculation optimization at a distance of position when more air cooling facilities of air duct length and arrangement can be followed by distance, air cooler between air cooler and coal-face.
Description
Technical field
The present invention relates to a kind of technical method applied to mine cooling field, more particularly to a kind of high-temperature mine air intake crossheading
Air cooling facility optimization placement method.
Background technology
As coal mining depth gradually increases, underground thermal pollution problem is increasingly prominent, and coal-face is underground by high temperature
Heat evil threatens one of place of most serious.Currently, the measure of coal-face refrigeration cool-down is mainly by its air intake crossheading
The air cooling facility and then cooling coal-face air intake wind-warm syndrome of connection and reasonable arrangement, so as to implement to cool to working face, thus air intake
There is length of the position of air cooling facility, number and matching air duct etc. to the EAT of coal-face in crossheading
Very big influence.Therefore, air cooling facility is particularly important in scientific and reasonable preferred arrangement air intake crossheading.It is however, big
Part mine lacks enough scientific basis, often resulted in often taking the mode of experience on air cooling facility arrangement
Need that air cooling facility is implemented repeatedly to move in a period of time, the labor intensity of the worker greatly enhanced.Closed for more science
The arrangement of the implementation high-temperature mine coal-face air intake crossheading air cooling facility of reason, the present invention is using law of conservation of energy as theory
Basis carries out point of science to the coupling heat exchange relationship in air duct outside distinguished and admirable, air duct between distinguished and admirable and roadway surrounding rock three
Analysis, it is proposed that the computational methods of air cooling facility preferred arrangement in air intake crossheading.
The content of the invention
It is an object of the invention to provide a kind of optimization method suitable for high-temperature mine air intake crossheading air cooling facility arrangement, pass through
The computational methods can implement scientific and reasonable arrangement to the air cooling facility in air intake crossheading, with previous experiences formula of forgoing
Arrangement, can improve air cooling facility utilization ratio in air intake crossheading, reduce the resettlement number of air cooling facility, reduce work
People's labor intensity, and then cause the implementation of mine cooling technical measures that there is stronger scientific basis.
The present invention, which solves the above problems, to be achieved through the following technical solutions：
A kind of high-temperature mine air intake crossheading air cooling facility optimization placement method of the present invention, the air cooling facility described in it is by part
Ventilation blower, air cooler and air duct three parts composition；The computational methods are with air cooler Outlet Section to air duct Outlet Section
Therrmodynamic system be research object, intake airflow, roadway surrounding rock and air cooling in the therrmodynamic system are obtained by Field Research
The thermodynamics basic parameter such as device, use the principle of the conservation of energy to outside distinguished and admirable, air duct in air duct in the therrmodynamic system it is distinguished and admirable with
And the coupling heat exchange relationship between three kinds of roadway surrounding rock is analyzed, and then the inside and outside distinguished and admirable thermal balance of air duct is obtained respectively
Equation, then using finite difference calculus, distinguished and admirable equation of heat balance inside and outside to air duct carries out numerical discretization solution respectively, can obtain
To the inside and outside temperature along Cheng Fengliu of air duct, ignore mixing length distinguished and admirable inside and outside air duct exit, it is former according to the conservation of energy
Reason, it can finally obtain distinguished and admirable mixed airflow temperature outside distinguished and admirable in air duct and air duct.
Described high-temperature mine air intake crossheading air cooling facility, its operation principle are in the presence of booster, by high temperature
Hot air flow in mine air intake crossheading cools down by air cooler, is transported to through air duct with wind place such as coal work
Face.
Described high-temperature mine air intake crossheading air cooling facility preferred arrangement computational methods, distinguished and admirable equation of heat balance outside its air duct
Establish consider heat dissipation from rock, it is distinguished and admirable in air duct leak out, distinguished and admirable heat transfer and the shadow of distinguished and admirable potential energy change in air duct
Ring, the influence of distinguished and admirable heat transfer and the change of distinguished and admirable potential energy outside the foundation consideration air duct of distinguished and admirable equation of heat balance in air duct.
Described high-temperature mine air intake crossheading air cooling facility optimization placement method, suitable for separate unit air cooling facility or more skies
The mixed-arrangement of cold facility carries out calculation optimization, for separate unit air cooling facility, can realize between air cooler and coal-face
Distance and air cooler be followed by the calculation optimization of air duct length, and for two or more air cooling facilities, except upper
State outside situation, also the calculation optimization comprising air cooling facility with air cooling facility at a distance of position.
Described high-temperature mine air intake crossheading air cooling facility optimization placement method, its Optimality Criteria export for air cooling facility air duct
Place's mixing temperature should meet《Safety regulations in coal mine》Regulation air dry-bulb temperature must not exceed 26 DEG C.
Brief description of the drawings
Fig. 1 is a kind of high-temperature mine air intake crossheading separate unit air cooling facility arrangement schematic diagram provided in an embodiment of the present invention.
Fig. 2 is finite difference calculus node discrete way schematic diagram in optimization placement method provided in an embodiment of the present invention.
Fig. 3 is a kind of two air cooling facility arrangement schematic diagrames of high-temperature mine air intake crossheading provided in an embodiment of the present invention.
Fig. 4 is a kind of three air cooling facility arrangement schematic diagrames of high-temperature mine air intake crossheading provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
It is a kind of high-temperature mine air intake crossheading separate unit air cooling facility arrangement schematic diagram as shown in Figure 1, it is suitable including air intake
It is groove 01, roadway surrounding rock 02, booster 03, air cooler 04, air duct 05, distinguished and admirable outside distinguished and admirable 06, air duct in air duct
07th, coal-face 08.Described air cooling facility is by booster 03, air cooler 04 and the three parts group of air duct 05
Into optimization method of the present invention is formed with the Outlet Section A of air cooler 04 between the Outlet Section B of air duct 05
Therrmodynamic system is research object, and the related thermal parameter for obtaining the therrmodynamic system respectively by live actual investigation mainly includes
At the Outlet Section of air cooler 04 in air duct distinguished and admirable 06 and air duct outside distinguished and admirable 07 temperature, humidity, MAF, lane
The primitive rock temperature of road country rock 02, section girth, the diameter etc. of unsteady heat transfer coefficie-nt and air duct 05, using the conservation of energy
Principle to the coupling outside air duct in the therrmodynamic system in distinguished and admirable 07, air duct between distinguished and admirable 06 and 02 3 kinds of roadway surrounding rock
Heat exchange relationship is analyzed.
It is x-axis along the center line of air intake crossheading 01 using the position of air cooler 04 as the origin of coordinates, and with distinguished and admirable outside air duct
07 direction is as x-axis positive direction.Appoint between A-B sections and take an infinitesimal section dx, the infinitesimal section airflow temperature, which becomes, to be turned to
DT, list respectively therebetween in air duct distinguished and admirable 06 and air duct outside distinguished and admirable 07 equation of heat balance.
(1) distinguished and admirable 06 equation of heat balance in air duct
M1CPdT1=(T2-T1)kπDdx-M1g sinθdx
(2) distinguished and admirable 07 equation of heat balance outside air duct
M2di2+(i2-i1)dM1=(T1-T2)kπDdx+kτ(Tgu-T2)Udx-M2g sinθdx
In formula：M1、M2For outside in air duct distinguished and admirable 06 and air duct distinguished and admirable 07 mass flow, kg/s；T1、T2For air duct
Interior distinguished and admirable 06 and air duct outside distinguished and admirable 07 temperature, DEG C；i1、i2For outside in air duct distinguished and admirable 06 and air duct distinguished and admirable 07 enthalpy
Value, KJ/kg；D is the diameter of air duct 05, m；K be air duct 05 in outer room heat exchange coefficient, KW/m2·℃；kτFor tunnel
The unsteady heat transfer coefficie-nt of country rock 02, KW/m2·℃；TguFor the primitive rock temperature of roadway surrounding rock 02, DEG C；U is roadway surrounding rock 02
Section girth, m；G is acceleration of gravity, m2/s；θ is that roadway surrounding rock 02 exploits inclination angle.
(3) according to associated hot mechanical knowledge, by distinguished and admirable 07 relative humidity outside in air duct distinguished and admirable 06 and air duct, water capacity,
The parameter expressions such as enthalpy substitute into distinguished and admirable 07 heat balance equation outside air duct respectively
In formula：CpFor the specific heat at constant pressure of dry air, C is often takenp=1.005kJ/ (kg DEG C)；R is the latent heat of vaporization of water vapour,
Often take r=2501kJ/kg；In air duct distinguished and admirable 06 and air duct outside distinguished and admirable 07 top relative humidity；For in air duct
Distinguished and admirable 06 and air duct outside distinguished and admirable 07 relative humidity variations rate；C is the average air leak rate of air curtain of air duct 05, m3/m；ρ is atmospheric density,
kg/m3；d1For distinguished and admirable 06 water capacity, kg/kg in air duct；b、ε′、pmFor the constant relevant with airflow temperature.
To simplify the analysis, make：
B3=kτU
Therefore, distinguished and admirable 07 heat balance equation is represented by outside air duct：
B1dT2=B2(T1-T2)+(Tgu-T2)B3+B4-B5T2
(3) boundary condition
In formula：TinDistinguished and admirable 06 temperature in air duct is exported for air cooler 04, DEG C；ToutTo be distinguished and admirable outside the exit air duct of air cooler 04
07, DEG C.
The above-mentioned description for completing physical model and mathematical modeling during to 01 separate unit air cooling apparatus of air intake crossheading, it is suitable for air intake
When groove arranges more air cooling facilities, it can be described using same Principle Method.The present invention uses finite difference method
Discrete processes are carried out respectively to above-mentioned equation.It is assumed that the distance between A-B sections are L, by the roadway surrounding rock 02 between it and
Air duct 05 is divided into n-1 sections, then is Δ x=L/ (n-1) per segment length, and it is even number to make distinguished and admirable 07 node serial number i outside air duct,
Distinguished and admirable 06 node serial number j is odd number in air duct, as shown in Figure 2.
(4) distinguished and admirable 07 equation of heat balance is discrete outside air duct
-B2Ti-3+(-2B1+B2+B3+B5)Ti-2-B2Ti-1
+(2B1+B2+B3+B5)Ti=2B3Tgu+2B4, (i=4,6...2n)
(5) distinguished and admirable 06 equation of heat balance is discrete in air duct
It is i.e. above-mentioned to complete wind-warm syndrome computational mathematics model when separate unit air cooler 04 is arranged in air intake crossheading 01, solve the mathematical modulo
Type is that can obtain outside air duct the temperature of distinguished and admirable 06 each node in distinguished and admirable 07 and air duct.
(6) air duct 05 exports inside and outside distinguished and admirable mixed temperature
Ignore distinguished and admirable air cooling length, it is assumed that distinguished and admirable 06 fully mixes with outside air duct distinguished and admirable 07 in the exit of air duct 05 in air duct
Close, then can establish equation of heat balance before and after distinguished and admirable mixing.
M1i1+M2i2=(M1+M2)i3
The parameter expressions such as distinguished and admirable 06 relative humidity, water capacity, enthalpy in outside air duct distinguished and admirable 07 and air duct are substituted into respectively distinguished and admirable
Before and after mixing in energy-balance equation.
In formula：i3For enthalpy distinguished and admirable after distinguished and admirable 07 mixing outside in air duct distinguished and admirable 06 and air duct, KJ/kg；T3Go out for air duct 05
Kou Chu tunnels, air duct and the distinguished and admirable temperature of mixing, DEG C；It is distinguished and admirable after being mixed for outside in air duct distinguished and admirable 06 and air duct distinguished and admirable 07
Relative humidity.
Aforesaid equation, which is arranged, to be obtained：
In actual application, for separate unit air cooling apparatus by adjust the air cooler 04 of air cooling facility in air intake crossheading with
The length of the distance between coal-face and air duct 05, and then determine optimal arrangement.
Above-mentioned only calculate separate unit air cooling apparatus position optimization is discussed, for arranging more air coolings in air intake crossheading
During equipment, identical computational methods can be also used, but during calculating preferred arrangement, except considering above-mentioned feelings
Outside condition, it is also contemplated that the position optimization between different air cooling apparatus.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the change that can readily occur in or replaces in the technical scope of present disclosure
Change, should all be included within the scope of the present invention.
Claims (3)
1. a kind of high-temperature mine air intake crossheading air cooling facility optimization placement method, it is characterised in that the air cooling facility is located at ore deposit
Inside well air intake crossheading, it includes booster, air cooler and air duct three parts, the air cooling facility preferred arrangement
Method is using air cooler Outlet Section to the therrmodynamic system between air duct Outlet Section as research object, according to law of conservation of energy pair
Coupling heat exchange relationship outside distinguished and admirable in air duct, air duct between distinguished and admirable and roadway surrounding rock three is analyzed, and is established respectively
The inside and outside distinguished and admirable equation of heat balance of air duct, discrete solution is carried out to the equation of heat balance using finite difference calculus, obtains air duct
Distinguished and admirable mixed airflow temperature outside distinguished and admirable and air duct in interior edge journey airflow temperature, air duct outer journey airflow temperature and air duct.
2. high-temperature mine air intake crossheading air cooling facility optimization placement method according to claim 1, it is characterised in that institute
State distinguished and admirable equation of heat balance outside air duct foundation consider heat dissipation from rock, it is distinguished and admirable in air duct leak out, distinguished and admirable heat passes in air duct
Lead and the influence of distinguished and admirable potential energy change, in air duct the foundation of distinguished and admirable equation of heat balance consider outside air duct distinguished and admirable heat transfer and
The influence of distinguished and admirable potential energy change.
3. high-temperature mine air intake crossheading air cooling facility optimization placement method according to claim 1, it is characterised in that institute
State preferred arrangement computational methods the mixed-arrangement scheme of separate unit air cooling facility or more air cooling facilities can be carried out calculating it is excellent
Change, for separate unit air cooling facility, can realize and air duct is followed by the distance between air cooler and coal-face and air cooler
The calculation optimization of length, for more air cooling facilities, after to the distance between air cooler and coal-face and air cooler
Give a dinner for a visitor from afar outside the calculation optimization of tube length degree, in addition to calculation optimization is carried out at a distance of position to each air cooling facility.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318416.7A CN107366547B (en) | 2016-05-13 | 2016-05-13 | A kind of high-temperature mine air inlet air-cooled facility optimization placement method of crossheading |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610318416.7A CN107366547B (en) | 2016-05-13 | 2016-05-13 | A kind of high-temperature mine air inlet air-cooled facility optimization placement method of crossheading |
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| CN107366547A true CN107366547A (en) | 2017-11-21 |
| CN107366547B CN107366547B (en) | 2019-08-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608714A (en) * | 2020-05-28 | 2020-09-01 | 太原理工大学 | Roof-cutting pressure-relief gob-side entry retaining ventilation mode optimization method |
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| CN102536297A (en) * | 2012-02-20 | 2012-07-04 | 河南理工大学 | Cold conveying system of mine air-conditioning and working method of cold conveying system |
| CN103306705A (en) * | 2013-06-13 | 2013-09-18 | 中国科学院工程热物理研究所 | Refrigeration system for mine cooling |
| CN203584452U (en) * | 2013-10-08 | 2014-05-07 | 中钢集团马鞍山矿山研究院有限公司 | Roadway heat exchanging simulation system for metal mine deep mining and tunneling |
| CN104849303A (en) * | 2015-05-20 | 2015-08-19 | 西安科技大学 | Phase change cooling research method of filling body in high-temperature deep well |
| CN204827510U (en) * | 2015-06-13 | 2015-12-02 | 山东科技大学 | Mine local ventilation heat sink |
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2016
- 2016-05-13 CN CN201610318416.7A patent/CN107366547B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536297A (en) * | 2012-02-20 | 2012-07-04 | 河南理工大学 | Cold conveying system of mine air-conditioning and working method of cold conveying system |
| CN103306705A (en) * | 2013-06-13 | 2013-09-18 | 中国科学院工程热物理研究所 | Refrigeration system for mine cooling |
| CN203584452U (en) * | 2013-10-08 | 2014-05-07 | 中钢集团马鞍山矿山研究院有限公司 | Roadway heat exchanging simulation system for metal mine deep mining and tunneling |
| CN104849303A (en) * | 2015-05-20 | 2015-08-19 | 西安科技大学 | Phase change cooling research method of filling body in high-temperature deep well |
| CN204827510U (en) * | 2015-06-13 | 2015-12-02 | 山东科技大学 | Mine local ventilation heat sink |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608714A (en) * | 2020-05-28 | 2020-09-01 | 太原理工大学 | Roof-cutting pressure-relief gob-side entry retaining ventilation mode optimization method |
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Granted publication date: 20190830 Termination date: 20200513 |