CN106968700A - A kind of mine ventilation system and its control method - Google Patents
A kind of mine ventilation system and its control method Download PDFInfo
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- CN106968700A CN106968700A CN201710270051.XA CN201710270051A CN106968700A CN 106968700 A CN106968700 A CN 106968700A CN 201710270051 A CN201710270051 A CN 201710270051A CN 106968700 A CN106968700 A CN 106968700A
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- air
- tunnel
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- supply
- fan
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Classifications
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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
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- 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
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- 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
- E21F1/10—Air doors
- E21F1/12—Devices for automatically opening air doors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
The invention discloses a kind of mine ventilation system, including blowing shaft, for being blown to underground；Main breeze fan is installed in blowing shaft；Several air-supply tunnels, air-supply tunnel be connected with blowing shaft, and secondary breeze fan is provided with tunnel of blowing, and the junction of blow tunnel and blowing shaft is provided with air intake adjustable ventilation door；Several return aircourses, return aircourse is corresponded with air-supply tunnel, is provided between return aircourse and air-supply tunnel in check-valves, return aircourse and is provided with secondary return air fan；Returnairshaft, for being arranged outside the circulation air by underground；Main return air fan is installed in returnairshaft.The present invention can improve the deficiencies in the prior art, improve the ventilation effect of mine ventilation system.
Description
Technical field
The present invention relates to mine ventilation technology field, especially a kind of mine ventilation system and its control method.
Background technology
Mine ventilation system be with the method for force ventilation by ground fresh air directly or after processing, pass through downcast
Lane feeding underground work place, foul atmosphere therein is diluted, then by return air roadway directly or after air-treatment
It is emitted into surface air.Its basic role, which is to provide in the clean air needed for people's breathing, dilution and exclusion production process, produces
The raw pernicious gas heat unnecessary with dust, removing and moisture, create the production environment of suitable people's operation.Therefore, close
Reason is built and one ventilating system of management is not only the basis for creating safety in production and sanitary condition, and is also the various calamities of prevention
The important means that evil occurs, to ensureing that mine safety production is significant.Existing mine ventilation system for air-supply and
The realtime control and precision of return air are not enough.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of mine ventilation system and its control method, it can solve the problem that existing
The deficiency of technology, improves the ventilation effect of mine ventilation system.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of mine ventilation system, including,
Blowing shaft, for being blown to underground；Main breeze fan is installed in blowing shaft；
Several air-supply tunnels, air-supply tunnel is connected with blowing shaft, and air-supply is provided with secondary breeze fan in tunnel, lane of blowing
The junction of road and blowing shaft is provided with air intake adjustable ventilation door；
Several return aircourses, return aircourse is corresponded with air-supply tunnel, is installed between return aircourse and air-supply tunnel
Have and secondary return air fan is installed in check-valves, return aircourse；
Returnairshaft, for being arranged outside the circulation air by underground；Main return air fan is installed in returnairshaft；
If having n return aircourse, arranged in numerical order since the tunnel nearest apart from ground, the tunnel nearest apart from ground is 1
Number tunnel, the tunnel farthest apart from ground is n tunnels, and i+1 tunnels are connected with n-i tunnels by transition tunnel
Connect, 0≤i ＜ n, if n is odd number, centrally located return aircourse is connected individually to a transition tunnel, transfer gallery
Road is connected with returnairshaft, and the junction of transition tunnel and return aircourse is provided with return air adjustable ventilation door, transition tunnel and returnairshaft
Connection；
Be respectively arranged with air velocity transducer in blowing shaft, air-supply tunnel, return aircourse and returnairshaft, in air-supply tunnel and
Temperature sensor is respectively arranged with return aircourse, blast biography is respectively arranged with air intake adjustable ventilation door and return air adjustable ventilation door
Sensor.
Preferably, the air-supply tunnel and the junction of blowing shaft are provided with deflector, deflector is fixed on air-supply lane
The edge in road, deflector and the axial angle in air-supply tunnel are 10 °~25 °.
Preferably, the transition tunnel and the junction of returnairshaft set fluted, groove is fixed on the interior of returnairshaft
On wall, and it is coaxially disposed with corresponding transition tunnel, the diameter of groove is 2 with the diameter ratio in transition tunnel:1, the depth of groove
Degree is 2 with diameter ratio:3.
A kind of control method of above-mentioned mine ventilation system, comprises the following steps：
A, according to the air-supply wind speed in each tunnel require, determine total air output Q of main breeze fan1,
Wherein, SjFor the average air supply areas in tunnel of blowing, vjFor the wind speed setting value in tunnel of blowing, k1For correction factor,
F1For the average potential function for fluid of blowing, L1For the total length for flow of fluid of blowing；
B, the total air output Q determined according to step A1, determine the total volume of return air Q of main return air fan2,
Wherein, k2For correction factor, μ is dynamic viscosity coefficient average in air return pipeline；
C, secondary breeze fan air output Q1jMeet,
The return air amount Q of secondary return air fan2jMeet,
And,
Wherein, k3For proportionality coefficient, 1 ＜ k3K in ＜ 1.05, all tunnels3All same；
D, the blast in each air-supply tunnel and temperature detected value and the deviation data of setting value, it is adjustable to air intake
The aperture of air door is adjusted,
Wherein, Δ A1jFor the aperture adjustment amount of air intake adjustable ventilation door, Δ P1jBe air-supply tunnel in blast detected value with setting
The deviation data of definite value, T1jFor temperature detection value, k4、k5For proportionality coefficient；
E, according to the blast in corresponding air-supply tunnel in the aperture adjustment amount and return aircourse of air intake adjustable ventilation door to return
Wind adjustable ventilation door is adjusted,
Wherein, Δ A2jFor the aperture adjustment amount of return air adjustable ventilation door, Δ P2jIt is the blast detected value in return aircourse with setting
The deviation data of definite value, k6、k7For proportionality coefficient.
Preferably, the total volume of return air Q of main return air fan2Adjusted according to the aperture of air intake adjustable ventilation door and return air adjustable ventilation door
Whole carry out feedback modifiers,
Wherein, Q '2For the total volume of return air of revised main return air fan,Adjusted for the aperture of whole air intake adjustable ventilation doors
Weighted average,Weighted average, the aeration flow in weighting rate and corresponding tunnel are adjusted for the aperture of whole return air adjustable ventilation doors
Amount is directly proportional, k8、k9For proportionality coefficient.
The beneficial effect brought using above-mentioned technical proposal is：Ventilation knot of the present invention first by improving tunnel
Structure, the different air quantity fluctuations brought to returnairshaft of different return aircourse return air pressure are reduced by design transition tunnel.Deflector
Air output deviation caused by blast pressures different between the connector in different air-supply tunnels in blowing shaft can be reduced.Returnairshaft
The groove of inwall is used for suppressing return air stream and the mutual disturbance of returnairshaft interior air-flow in tunnel, improves the return air effect of returnairshaft
Rate.The present invention proposes air output control new method in a creative way, is carried out using the average potential function pair air output for fluid of blowing
Amendment, can be on the premise of amount of calculation not be increased, hence it is evident that improve the control accuracy of air output.Return air amount is entered by air output
Deviation occurs for row adjustment, the adjustment and air output that can avoid return air amount.The air quantity in each air-supply tunnel and return aircourse is reserved will
Surplus is maintained, so as to realize the pressure-fired of whole system, and the problem of can avoid occurring " collaborating " between a tunnel.Profit
The stabilization of blast and temperature in tunnel is realized with the adjustment of air door, after air door adjustment, feedback adjustment is carried out to return air amount, can be with
Avoiding the adjustment due to air door causes the parameter balance of whole ventilating system to change.
Brief description of the drawings
Fig. 1 is the structure chart of an embodiment of the invention.
Fig. 2 is air-supply tunnel and the structure chart of blowing shaft connecting portion in an embodiment of the invention.
Fig. 3 is transition tunnel and the structure chart of returnairshaft connecting portion in an embodiment of the invention.
In figure：1st, blowing shaft；2nd, main breeze fan；3rd, air-supply tunnel；4th, secondary breeze fan；5th, air intake adjustable ventilation door；6、
Return aircourse；7th, check-valves；8th, secondary return air fan；9th, returnairshaft；10th, main return air fan；11st, return air adjustable ventilation door；12nd, wind speed
Sensor；13rd, temperature sensor；14th, wind pressure sensor；15th, transition tunnel；16th, deflector；17th, groove；18th, return air is bypassed
Pipe；19th, return air fan is bypassed.
Embodiment
The standardized element used in the present invention can commercially, and shaped piece is according to specification and accompanying drawing
Record can carry out customized, and the specific connected mode of each part is using bolt ripe in the prior art, rivet, weldering
The conventional meanses such as connect, paste, will not be described in detail herein.
Reference picture 1-3 a, embodiment of the invention includes,
Blowing shaft 1, for being blown to underground；Main breeze fan 2 is installed in blowing shaft 1；
Several air-supply tunnels 3, air-supply tunnel 3 is connected with blowing shaft 1, and air-supply is provided with secondary breeze fan 4 in tunnel 3,
Air-supply tunnel 3 and the junction of blowing shaft 1 are provided with air intake adjustable ventilation door 5；
Several return aircourses 6, return aircourse 6 is corresponded with air-supply tunnel 3, between return aircourse 6 and air-supply tunnel 3
It is provided with check-valves 7, return aircourse 6 and secondary return air fan 8 is installed；
Returnairshaft 9, for being arranged outside the circulation air by underground；Main return air fan 10 is installed in returnairshaft 9；
If having n return aircourse 6, arranged in numerical order since the tunnel nearest apart from ground, the tunnel nearest apart from ground is 1
Number tunnel, the tunnel farthest apart from ground is n tunnels, and i+1 tunnels are connected with n-i tunnels by transition tunnel 15
Connect, 0≤i ＜ n, if n is odd number, centrally located return aircourse 6 is connected individually to a transition tunnel 15, transition
Tunnel 15 is connected with returnairshaft 9, and the junction in transition tunnel 15 and return aircourse 6 is provided with return air adjustable ventilation door 11, transfer gallery
Road 15 is connected with returnairshaft 9；
Air velocity transducer 12 is respectively arranged with blowing shaft 1, air-supply tunnel 3, return aircourse 6 and returnairshaft 9, in air-supply
Temperature sensor 13 is respectively arranged with tunnel 3 and return aircourse 6, is punished in air intake adjustable ventilation door 5 and return air adjustable ventilation door 11
Wind pressure sensor 14 is not provided with.
Air-supply tunnel 3 and the junction of blowing shaft 1 are provided with deflector 16, and deflector 16 is fixed on the side in air-supply tunnel 3
Edge, deflector 16 and the axial angle in air-supply tunnel 3 are 21 °.
Transition tunnel 15 and the junction of returnairshaft 9 set fluted 17, and groove 17 is fixed on the inwall of returnairshaft 9,
And be coaxially disposed with corresponding transition tunnel 15, the diameter of groove 17 is 2 with the diameter ratio in transition tunnel 15:1, groove 17
Depth is 2 with diameter ratio:3.
A kind of control method of above-mentioned mine ventilation system, comprises the following steps：
A, according to the air-supply wind speed in each tunnel require, determine total air output Q of main breeze fan 21,
Wherein, SjFor the average air supply areas in tunnel of blowing, vjFor the wind speed setting value in tunnel of blowing, k1For correction factor,
F1For the average potential function for fluid of blowing, L1For the total length for flow of fluid of blowing；
B, the total air output Q determined according to step A1, determine the total volume of return air Q of main return air fan 102,
Wherein, k2For correction factor, μ is dynamic viscosity coefficient average in air return pipeline；
C, secondary breeze fan 4 air output Q1jMeet,
The return air amount Q of secondary return air fan 82jMeet,
And,
Wherein, k3For proportionality coefficient, 1 ＜ k3K in ＜ 1.05, all tunnels3All same；
D, the blast in each air-supply tunnel 3 and temperature detected value and the deviation data of setting value, can to air intake
The aperture of air register 5 is adjusted,
Wherein, Δ A1jFor the aperture adjustment amount of air intake adjustable ventilation door 5, Δ P1jFor air-supply tunnel 3 in blast detected value with
The deviation data of setting value, T1jFor temperature detection value, k4、k5For proportionality coefficient；
E, according to the blast pair in corresponding air-supply tunnel 3 in the aperture adjustment amount and return aircourse 6 of air intake adjustable ventilation door 5
Return air adjustable ventilation door 11 is adjusted,
Wherein, Δ A2jFor the aperture adjustment amount of return air adjustable ventilation door 11, Δ P2jFor the blast detected value in return aircourse 6
With the deviation data of setting value, k6、k7For proportionality coefficient.
The total volume of return air Q of main return air fan 102According to the aperture of air intake adjustable ventilation door 5 and return air adjustable ventilation door 11 adjust into
Row feedback modifiers,
Wherein, Q '2For the total volume of return air of revised main return air fan 10,For the aperture of whole air intake adjustable ventilation doors 5
Adjust weighted average,Weighted average, weighting rate and corresponding tunnel are adjusted for the aperture of whole return air adjustable ventilation doors 11
Vent flow is directly proportional, k8、k9For proportionality coefficient.
It is connected between each air-supply tunnel 3 in bypass backwind tube 18, bypass backwind tube 18 and bypass return air fan is installed
19.By setting bypass backwind tube 18, the air-flow velocity blown in tunnel can be accelerated, the airflow circulating speed of underground is improved.
Bypass return air fan 19 can avoid, due to air return caused by the pressure differential between air-supply tunnel 3, remaining out air draft
State.Meanwhile, when secondary breeze fan 4 and secondary return air fan 8 carry out air quantity adjustment, pass through the synchronization to bypassing return air fan 19
Adjustment, it is possible to reduce the pressure oscillation between air-supply tunnel and return aircourse.
In the description of the invention, it is to be understood that term " longitudinal direction ", " transverse direction ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, is for only for ease of the description present invention, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of mine ventilation system, it is characterised in that：Including,
Blowing shaft (1), for being blown to underground；Main breeze fan (2) is installed in blowing shaft (1)；
Several air-supplies tunnel (3), air-supply tunnel (3) is connected with blowing shaft (1), and secondary air-supply wind is provided with air-supply tunnel (3)
Machine (4), air-supply tunnel (3) and the junction of blowing shaft (1) are provided with air intake adjustable ventilation door (5)；
Several return aircourses (6), return aircourse (6) are corresponded with air-supply tunnel (3), return aircourse (6) and air-supply tunnel
(3) it is provided between in check-valves (7), return aircourse (6) and secondary return air fan (8) is installed；
Returnairshaft (9), for being arranged outside the circulation air by underground；Main return air fan (10) is installed in returnairshaft (9)；
If having n return aircourse (6), arranged in numerical order since the tunnel nearest apart from ground, the tunnel nearest apart from ground is No. 1
Tunnel, the tunnel farthest apart from ground is n tunnels, and i+1 tunnels are connected with n-i tunnels by transition tunnel (15)
Connect, 0≤i ＜ n, if n is odd number, centrally located return aircourse (6) be connected individually to a transition tunnel (15),
Transition tunnel (15) is connected with returnairshaft (9), and the junction of transition tunnel (15) and return aircourse (6) is provided with return air wind adjustable
Door (11), transition tunnel (15) are connected with returnairshaft (9)；
Air velocity transducer (12) is respectively arranged with blowing shaft (1), air-supply tunnel (3), return aircourse (6) and returnairshaft (9),
Temperature sensor (13) is respectively arranged with air-supply tunnel (3) and return aircourse (6), in air intake adjustable ventilation door (5) and return air
Adjustable ventilation door (11) place is respectively arranged with wind pressure sensor (14).
2. mine ventilation system according to claim 1, it is characterised in that：The air-supply tunnel (3) and blowing shaft (1)
Junction is provided with deflector (16), and deflector (16) is fixed on the edge of air-supply tunnel (3), deflector (16) and air-supply tunnel
(3) axial angle is 10 °~25 °.
3. mine ventilation system according to claim 1, it is characterised in that：The transition tunnel (15) and returnairshaft (9)
Junction fluted (17) are set, groove (17) is fixed on the inwall of returnairshaft (9), and with corresponding transition tunnel (15)
It is coaxially disposed, the diameter of groove (17) is 2 with the diameter ratio in transition tunnel (15):1, the depth and diameter ratio of groove (17)
For 2:3.
4. the control method of the mine ventilation system described in a kind of claim 1-3 any one, it is characterised in that including following
Step：
A, according to the air-supply wind speed in each tunnel require, determine total air output Q of main breeze fan (2)1,
Wherein, SjFor the average air supply areas in tunnel of blowing, vjFor the wind speed setting value in tunnel of blowing, k1For correction factor, F1For
The average potential function of air-supply fluid, L1For the total length for flow of fluid of blowing；
B, the total air output Q determined according to step A1, determine the total volume of return air Q of main return air fan (10)2,
Wherein, k2For correction factor, μ is dynamic viscosity coefficient average in air return pipeline；
C, the air output Q of secondary breeze fan (4)1jMeet,
The return air amount Q of secondary return air fan (8)2jMeet,
And,
Wherein, k3For proportionality coefficient, 1 ＜ k3K in ＜ 1.05, all tunnels3All same；
D, the blast in each air-supply tunnel (3) and temperature detected value and the deviation data of setting value, it is adjustable to air intake
The aperture of air door (5) is adjusted,
Wherein, Δ A1jFor the aperture adjustment amount of air intake adjustable ventilation door (5), Δ P1jFor air-supply tunnel (3) in blast detected value with
The deviation data of setting value, T1jFor temperature detection value, k4、k5For proportionality coefficient；
E, according to the blast in corresponding air-supply tunnel (3) in the aperture adjustment amount and return aircourse (6) of air intake adjustable ventilation door (5)
Return air adjustable ventilation door (11) is adjusted,
Wherein, Δ A2jFor the aperture adjustment amount of return air adjustable ventilation door (11), Δ P2jFor the blast detected value in return aircourse (6) with
The deviation data of setting value, k6、k7For proportionality coefficient.
5. the control method of mine ventilation system according to claim 4, it is characterised in that：Main return air fan (10) it is total
Return air amount Q2Feedback modifiers are carried out according to the adjustment of the aperture of air intake adjustable ventilation door (5) and return air adjustable ventilation door (11),
Wherein, Q '2For the total volume of return air of revised main return air fan (10),For the aperture of whole air intake adjustable ventilation doors (5)
Adjust weighted average,Weighted average, weighting rate and corresponding tunnel are adjusted for the aperture of whole return air adjustable ventilation doors (11)
Vent flow be directly proportional, k8、k9For proportionality coefficient.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710270051.XA CN106968700B (en) | 2017-04-24 | 2017-04-24 | A kind of mine ventilation system and its control method |
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| CN201710270051.XA CN106968700B (en) | 2017-04-24 | 2017-04-24 | A kind of mine ventilation system and its control method |
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| CN107965347A (en) * | 2017-12-28 | 2018-04-27 | 中国矿业大学(北京) | It is a kind of to press gas controller and method |
| CN108798741A (en) * | 2018-05-31 | 2018-11-13 | 烟台智本知识产权运营管理有限公司 | A kind of gold mine mine air-supply air exhausting device |
| CN110145355A (en) * | 2019-06-14 | 2019-08-20 | 华北理工大学 | A kind of rubber conveyer fire smoke flow drainage device and method |
| RU2816134C1 (en) * | 2023-07-19 | 2024-03-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет императрицы Екатерины II" | Device for forced ventilation of workplaces |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107965347A (en) * | 2017-12-28 | 2018-04-27 | 中国矿业大学(北京) | It is a kind of to press gas controller and method |
| CN108798741A (en) * | 2018-05-31 | 2018-11-13 | 烟台智本知识产权运营管理有限公司 | A kind of gold mine mine air-supply air exhausting device |
| CN110145355A (en) * | 2019-06-14 | 2019-08-20 | 华北理工大学 | A kind of rubber conveyer fire smoke flow drainage device and method |
| RU2816134C1 (en) * | 2023-07-19 | 2024-03-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет императрицы Екатерины II" | Device for forced ventilation of workplaces |
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| Publication number | Publication date |
|---|---|
| CN106968700B (en) | 2018-12-18 |
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