CN102619551A - System and method for realizing long-time uniform cooling in mine high-temperature stope working face - Google Patents
System and method for realizing long-time uniform cooling in mine high-temperature stope working face Download PDFInfo
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- CN102619551A CN102619551A CN2012101242437A CN201210124243A CN102619551A CN 102619551 A CN102619551 A CN 102619551A CN 2012101242437 A CN2012101242437 A CN 2012101242437A CN 201210124243 A CN201210124243 A CN 201210124243A CN 102619551 A CN102619551 A CN 102619551A
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Abstract
The invention discloses a system and method for realizing long-time uniform cooling in a mine high-temperature stope working face. The method mainly comprises the following steps of: arranging a local fan and a heat exchange device in an air intake entry, the heat exchange device is a tail end radiating device of a mine cooling system, one end of the heat exchange device is connected with a short air duct via the local fan, the other end is connected with a long air duct, and the long air duct is laid along the air intake entry; the tail end is arranged in a transverse region between the rear half part of the coal wall in the stope working face and the gob, and the end part is sealed; vent holes are arranged on the long air duct in the stope workign face at equal distance, so that air quantities of the air flow flowing out of all vent holes in unit time are equal, the length of the tail end of the long air duct in the transverse region is adjusted along with the movement of the working face, and long-time uniform cooling in the stope working face is realized. The problem of nonuniform cold and heat distribution on the working face after cooling measures are adopted can be avoided, and the influence of cooling work on the normal production of the working face can be reduced to the maximum extent.
Description
Technical field
The present invention relates to a kind ofly in mine high temperature stope, realize the long-time evenly system of cooling; The invention still further relates to a kind of long-time evenly method of cooling that realizes simultaneously.
Background technology
In recent years, along with pit mining shifts to the deep gradually, increasing mine is faced with the difficult problem of elevated temperature heat evil.In order to create suitable working heat ambient conditions, the mechanical refrigeration cooling has become the necessary means that underground thermal pollution is administered.The mine cooling system that has entered at present practical engineering application stage and technological comparative maturity mainly contains the centralized cold water cooling system in ground, the centralized cold water cooling system in down-hole, ground ice making cooling system, local mobile cooling system.But a good mine cooling system only is the basis, mainly needs the perfect falling temperature technique technology in cold place (getting working face) to be only the key of carrying out mine cooling work.In the required cooling place, mine down-hole, stope is the most important thing of cooling work.The inventor finds that the cooling pattern of present China deep-well high temperature stope mainly is in the air intake crossheading, to install air cooler or evaporimeter (the terminal cold scattering equipment of mine cooling system); Partly (mixing the wind cooling) or the interior air intake of whole (full blast cooling) cooling work face air intake crossheadings, is not the workman working region that is directed in the stope.When the deep wall rock temperature was higher, it was not all right only depending at air intake gate road cooling airflow.Because; Even it is very low that the airflow temperature at work plane air intake place reduces; But because hot source heat-dissipating, the moisture dispersed amount big (especially high-yield and high-efficiency mine stope) of wetting in the work plane still can surpass the requirement of " safety regulations in coal mine " regulation at the airflow temperature in work plane exit.
In order to address this problem; Be necessary to design a kind of long-time evenly system of cooling that can realize to realize in the mine high temperature stope; Can alleviate on the one hand and take the cold and hot problem of uneven distribution of work plane behind the cooling measure; Can use up does not again farthest influence the work plane ordinary production, meets field engineering reality.
Summary of the invention
In view of this, one of the object of the invention provides the system of even cooling when realizing length in a kind of mine high temperature stope; Two of the object of the invention provides the method for even cooling when realizing length in a kind of mine high temperature stope; Make deep mining mine high temperature stope avoid after taking cooling measure, producing cold and hot problem of uneven distribution; Can realize for a long time even cooling, farthest reduce the influence of cooling work the work plane ordinary production.
One of the object of the invention is realized by the following technical programs:
The system of even cooling when realizing length in this kind mine high temperature stope; Comprise booster, heat-exchanger rig, short air duct and long air duct; Said booster and heat-exchanger rig are arranged in the mine high temperature stope air intake crossheading of deep mining; Said heat-exchanger rig is as the terminal cold scattering equipment of mine cooling system, and refrigerating medium is the inner and distinguished and admirable generation interchange of heat of high temperature at heat-exchanger rig;
One end of said heat-exchanger rig links to each other through short air duct with booster; The other end is connected to long air duct, and long air duct is laid along the air intake crossheading, and its latter end is circuitous to extend in the transverse area between the latter half of and goaf of rib in the stope; The closed-end of said long air duct latter end; Be positioned on the long air duct stack shell of stope equidistance and offer gravity vent, the distinguished and admirable air quantity that flows out in the unit interval along each gravity vent is equated, realize in the stope evenly cooling.
Further, said heat-exchanger rig comprises air cooler or evaporimeter;
Further, said refrigerating medium adopts cold water or salt solution or ethylene glycol.
Two of the object of the invention is realized through following technical scheme:
Realize the method for even cooling when long in this kind mine high temperature stope, be with above-mentioned system after the stope internal placement finishes, in the progradation of work plane; Along with the continuous reach of work plane along direction of propulsion; The continuous length of the long air duct latter end of adjustment in transverse area is substantially equal to the length of this transverse area until the length of long air duct in transverse area, and state reaches capacity; The long air duct stack shell that will still be in the air intake crossheading this moment removes a part; Retraction is in the long air duct latter end in the transverse area simultaneously, makes long air duct return back to original state, continues the progradation of stope; Rib on direction of propulsion is latter half of to be about to the position of installing of heat-exchanger rig and booster in the air intake crossheading to be changed when concordant with heat-exchanger rig;
Further, in offering the process of gravity vent,, the distinguished and admirable air quantity that flows out in the unit interval along each gravity vent is equated through the various combination form of air duct section and gravity vent perforated area is set.
Further, said various combination mode comprises:
(1) change the gravity vent orifice area, long air duct basal area is constant;
(2) change long air duct basal area, the gravity vent orifice area is constant;
(3) the gravity vent orifice area all changes with long air duct basal area.
The invention has the beneficial effects as follows:
1. method of the present invention is easy and simple to handle, respond well, only need carry out the adjustment of a small amount of number of times to air duct; And need booster and heat-exchanger rig not moved; Just can realize for a long time even cooling in the stope, therefore, practice thrift manpower and materials; Reduce energy loss, reached the purpose of the down-hole cooling of stability and high efficiency;
2. the use of system of the present invention; Make deep mining mine high temperature stope avoid after taking cooling measure, producing cold and hot problem of uneven distribution; Can realize for a long time even cooling, farthest reduce the influence of cooling work the work plane ordinary production.
Other advantages of the present invention, target and characteristic will be set forth in manual subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from practice of the present invention, obtain instruction to investigating of hereinafter.Target of the present invention and other advantages can realize and obtain through following manual and claims.
Description of drawings
In order to make the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is made further detailed description below, wherein:
Fig. 1 is a system initial state sketch map of the present invention;
Fig. 2 is a system limits view of the present invention;
The sketch map of Fig. 3 for booster and heat-exchanger rig installation site need change the time.
The specific embodiment
Below will carry out detailed description to the preferred embodiments of the present invention with reference to accompanying drawing.Should be appreciated that preferred embodiment has been merely explanation the present invention, rather than in order to limit protection scope of the present invention.
The system that is used for realizing in the mine high temperature stope even cooling when long of the present invention; Comprise booster, heat-exchanger rig, short air duct and long air duct; Wherein booster and heat-exchanger rig are arranged in the mine high temperature stope air intake crossheading of deep mining; Heat-exchanger rig is as the terminal cold scattering equipment of mine cooling system, and refrigerating medium is the inner and distinguished and admirable generation interchange of heat of high temperature at heat-exchanger rig; Wherein, heat-exchanger rig can adopt air cooler or evaporimeter, and refrigerating medium can adopt cold water or salt solution or ethylene glycol.
One end of heat-exchanger rig links to each other through short air duct with booster; The other end is connected to long air duct, and long air duct is laid along the air intake crossheading, and its latter end is circuitous to extend in the transverse area between the latter half of and goaf of rib in the stope; The closed-end of said long air duct latter end; Be positioned on the long air duct stack shell of stope equidistance and offer gravity vent, the distinguished and admirable air quantity that flows out in the unit interval along each gravity vent is equated, realize in the stope evenly cooling.
The method of even cooling when realizing length in the mine high temperature stope of the present invention; Be under the situation that in deep mining mine high temperature stope, each arrangements of components of said system is finished, runs well; In the progradation of work plane,, constantly adjust the length of long air duct latter end in transverse area along with the continuous reach of work plane along direction of propulsion; Be substantially equal to the length of this transverse area until the length of long air duct in transverse area; The state that reaches capacity, the long air duct stack shell that will still be in the air intake crossheading this moment removes a part, and retraction is in the interior long air duct latter end of transverse area simultaneously; Make long air duct return back to original state, continue the progradation of stope; When the rib on direction of propulsion will be soon concordant with heat-exchanger rig; The position of installing of heat-exchanger rig and booster in the air intake crossheading is changed; Like this, both reduce the removal of home number of times of working face cooling system, reached the purpose of even transporting cold wind when growing in the work plane again.
Need to prove, in offering the process of gravity vent, can the distinguished and admirable air quantity that flows out in the unit interval along each gravity vent equated through the various combination form of air duct section and gravity vent perforated area is set.
The various combination mode comprises:
(1) change the gravity vent orifice area, long air duct basal area is constant;
(2) change long air duct basal area, the gravity vent orifice area is constant;
(3) the gravity vent orifice area all changes with long air duct basal area.
In this area, because very ripe to the balanced ventilation design basic principle of pipeline, air duct, its relevant design principle, computational process and instance can repeat no more at this with reference to multiple open source information.
Specific embodiment
In the present embodiment, stope along inclined direction length is 200m, and evenly the cooling point is 5.The implication of each label is among Fig. 1:
The 1-booster; The 2-heat-exchanger rig; The long air duct of 3-; The short air duct of 4-; The 5-goaf; The 6-rib; The 7-gravity vent.
Air cooler and supporting booster are installed in apart from stope air intake vent 500m (according to actual conditions in the deep mining mine high temperature stope air intake crossheading; Also can select 300m, 400m even 600m, 700m) locate; Connect the air duct of 560m, offer the air outlet of balanced ventilation on the air duct of back 160m, spacing 40m thereafter; End seals, and original state is as shown in Figure 1.
Propelling along with work plane; Air duct can be constantly to the latter half of passing of work plane, to limit state, at this moment; Rib on the direction of propulsion is about to concordant with heat-exchanger rig; End with duration air duct latter end is about to offset with the sidewall of air return way, and is as shown in Figure 2, the end-state of air duct in work plane when be stope balanced ventilation cooling this moment.
When ultimate limit state,, must be back to original state for guaranteeing that work plane continues to advance.Being operating as of this moment: the air duct of nearly 400m in the air intake crossheading is removed 100m (10 joint); With the whole reach of air duct 100m; Promptly return to Fig. 1 state, but air cooler (or evaporimeter) and supporting booster have reduced apart from the distance of work plane air intake vent in the air intake crossheading, become 400m.So, after the circulation between original state to the limit state is replied 3-4 time, when the rib on direction of propulsion will be soon concordant with heat-exchanger rig, just need (as shown in Figure 3) changed in the position of installing of air cooler and supporting booster in the air intake crossheading.Like this, both reduce the removal of home number of times of working face cooling system, reached the purpose of the even transporting cold wind of work plane again.
With China East China is example, because most mines are only just opened cooling system in hotter month in summer, 3～4 months hotter months of summer advance about 600～800m altogether based on every month about 200m of face propulsion speed.Stope is just considered this factor when cooling system is installed like this; Then working face cooling system summer at most removal of home once sometimes or even settle at one go, do not need change; Therefore it is actual farthest to have met field engineering, has realized maximizing the benefits.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. the system of even cooling when realizing length in the mine high temperature stope; It is characterized in that: said system comprises booster, heat-exchanger rig, short air duct and long air duct; Said booster and heat-exchanger rig are arranged in the mine high temperature stope air intake crossheading of deep mining; Said heat-exchanger rig is as the terminal cold scattering equipment of mine cooling system, and refrigerating medium is the inner and distinguished and admirable generation interchange of heat of high temperature at heat-exchanger rig;
One end of said heat-exchanger rig links to each other through short air duct with booster; The other end is connected to long air duct, and long air duct is laid along the air intake crossheading, and its latter end is circuitous to extend in the transverse area between the latter half of and goaf of rib in the stope; The closed-end of said long air duct latter end; Be positioned on the long air duct stack shell of stope equidistance and offer gravity vent, the distinguished and admirable air quantity that flows out in the unit interval along each gravity vent is equated, realize in the stope evenly cooling.
2. the system of even cooling when realizing length in the mine high temperature stope as claimed in claim 1, it is characterized in that: said heat-exchanger rig comprises air cooler or evaporimeter.
3. the system of even cooling when realizing length in the mine high temperature stope according to claim 1, it is characterized in that: said refrigerating medium adopts cold water or salt solution or ethylene glycol.
4. the method for even cooling is characterized in that: after system is installed, in the progradation of work plane when adopting like the arbitrary described system of claim 1 to 3 realization length; Along with the continuous passing of work plane along direction of propulsion; The continuous length of the long air duct latter end of adjustment in transverse area is substantially equal to the length of this transverse area until the length of long air duct in transverse area, and state reaches capacity; The long air duct stack shell that will still be in the air intake crossheading this moment removes a part; Retraction is in the long air duct latter end in the transverse area simultaneously, makes long air duct return back to original state, continues the progradation of stope; When the rib on direction of propulsion will be soon concordant with heat-exchanger rig, the position of installing of heat-exchanger rig and booster in the air intake crossheading is changed.
5. the method for even cooling when realizing length in the mine high temperature stope according to claim 4; It is characterized in that: in offering the process of gravity vent; Through the various combination form of air duct section and gravity vent perforated area is set, the distinguished and admirable air quantity that flows out in the unit interval along each gravity vent is equated.
6. the method for even cooling when realizing length in the mine high temperature stope according to claim 5, it is characterized in that: said various combination mode comprises:
(1) change the gravity vent orifice area, long air duct basal area is constant;
(2) change long air duct basal area, the gravity vent orifice area is constant;
(3) the gravity vent orifice area all changes with long air duct basal area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101242437A CN102619551A (en) | 2012-04-25 | 2012-04-25 | System and method for realizing long-time uniform cooling in mine high-temperature stope working face |
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| CN2012101242437A CN102619551A (en) | 2012-04-25 | 2012-04-25 | System and method for realizing long-time uniform cooling in mine high-temperature stope working face |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422162A (en) * | 2015-12-25 | 2016-03-23 | 湖南科技大学 | Mined-out area cooling device and cooling method utilizing filling material capable of absorbing heat |
| CN107227971A (en) * | 2016-03-24 | 2017-10-03 | 中国矿业大学(北京) | The method that cold wind controls high temperature stope operation area environment temperature every account |
| CN113944495A (en) * | 2021-10-15 | 2022-01-18 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Mine cooling system |
| CN114109467A (en) * | 2021-12-06 | 2022-03-01 | 中铁隧道集团一处有限公司 | Tunnel construction comprehensive ventilation system and control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422162A (en) * | 2015-12-25 | 2016-03-23 | 湖南科技大学 | Mined-out area cooling device and cooling method utilizing filling material capable of absorbing heat |
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| CN107227971A (en) * | 2016-03-24 | 2017-10-03 | 中国矿业大学(北京) | The method that cold wind controls high temperature stope operation area environment temperature every account |
| CN113944495A (en) * | 2021-10-15 | 2022-01-18 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Mine cooling system |
| CN114109467A (en) * | 2021-12-06 | 2022-03-01 | 中铁隧道集团一处有限公司 | Tunnel construction comprehensive ventilation system and control method |
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Application publication date: 20120801 |