CN103603691A - Mine ventilation dynamic resolving and analysis early warning method and system - Google Patents
Mine ventilation dynamic resolving and analysis early warning method and system Download PDFInfo
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Abstract
The invention discloses a mine ventilation dynamic resolving and analysis early warning method and system. The method comprises the steps that a data collection terminal arranged at an underground key point transmits monitored wind speed and wind pressure data to a data processing center; the data processing center converts the wind speed and wind pressure data monitored by the data collection terminal into wind quantity and pressure difference data; the wind distribution situation information of all underground positions is obtained through a resolving center according to the wind quantity and pressure difference data and stored roadway wind resistance data; an analysis early warning center analyzes the ventilation situations of all the underground positions according to stored roadway attribute data, the wind speed and wind pressure data monitored by the data collection terminal and the wind distribution situation information of all the underground positions, and corresponding early warning information is sent out. According to the mine ventilation dynamic resolving and analysis early warning method and system, dynamic resolving can be carried out according to underground real-time changes, and the wind quantity, the wind speed and the like of all underground roadways are obtained; meanwhile, the ventilation situations of the underground roadways and the ventilation safety situation of an extraction work face are early warned about.
Description
Technical field
The present invention relates to coal mine safety management field, be specifically related to coalmine ventilation management domain, relate in particular to a kind of mine ventilation Online Integer and analysis and early warning method and system.
Background technology
Mine ventilation is the deciding factor that guarantees that colliery runs well, it sends into down-hole by fresh air through airway, for work personnel, breathe, water down simultaneously, get rid of various poisonous, harmful, damp and the dust with exploitation, gushing out or produce, to guarantee comfortable safe work situation.The important measures that the various disasters of prevention occur are not only in ventilation, once and disaster occur, aeration technology is again to control, dwindle, eliminate the indispensable means of disaster.Therefore, study mine ventilation and guarantee the stable, reliable of ventilation system, to assurance safety of coal mines, normally produce significant.
Current domestic a lot of Mine Ventilation Network Solution Systems for underground ventilating that had, these systems play a significantly greater role for setting up reasonable, stable ventilation system.The ventilation system of down-hole is a dynamical system, but current ventilation is being resolved to process analysis procedure analysis discovery, resolve the too much intervention of process need people, as the wind direction in the entering of specified network, returnairshaft, appointment tunnel, collect the blast of main fan, the record material of air quantity, main fan performance curve data etc., then these data are arranged to final input computer and ventilate and resolve, cause realizing real-time Online Integer and real-time early warning.
The Ventilation Network Solution method that Current Domestic adopts needs artificial participation, spend a large amount of time, man power and material, it is that lag behind, non real-time resolving process and result, ageing very low, so can not reflect the real-time condition of underground ventilating, the object that does not more reach the great safety in production hidden danger in timely elimination colliery and avoid colliery major accident to occur.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of mine ventilation Online Integer and analysis and early warning method and system, with Real-time Obtaining mine ventilation situation and make corresponding early warning.
First aspect, the embodiment of the present invention provides a kind of mine ventilation Online Integer and analysis and early warning method, and described method comprises:
The data collection station that is arranged on down-hole key point is sent to data processing centre by the wind speed monitoring and wind pressure data;
The wind speed that described data processing centre monitors described data collection station and wind pressure data are converted to air quantity and pressure difference data;
The center of resolving obtains down-hole minute landscape condition information everywhere according to the windage data in the tunnel of described air quantity and pressure difference data and storage;
Analysis and early warning center is analyzed down-hole ventilation situation everywhere according to the attribute data in the tunnel of storage, wind speed that described data collection station monitors and wind pressure data and down-hole minute landscape condition information everywhere, and sends corresponding early warning information.
Further, described down-hole key point comprises: transportation lane, exploiting field are entered, return airway, air crossing, ,Jiao Lian tunnel, pedestrian lane and getting working face.
Further, described data collection station comprises air velocity transducer and wind pressure sensor.
Further, described in the center of resolving according to the windage data in the tunnel of described air quantity and pressure difference data and storage, obtain down-hole minute landscape condition information everywhere, specifically comprise:
Downcast and returnairshaft in identification ventilation network, wherein, starting point in-degree is that the tunnel that zero out-degree is 1 is downcast, terminal in-degree is that 1 out-degree is that zero tunnel is returnairshaft;
The distinguished and admirable equation of reading loop and iterative formula, the distinguished and admirable equation in described loop is:
wherein, H
iit is the blast that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road; H
fwind pressure value for ventilation fan in closed-loop path; H
fromfor natural ventilation pressure value in the closed-loop path that comprises downcast and returnairshaft; M is by being comprised a maximum way in closed-loop path;
Described iterative formula is:
Wherein,
K is closed-loop path numbering; I is branch number in closed-loop path; B is a way in closed-loop path; H
k certainlyit is the natural ventilation pressure in k closed-loop path; R
ithe windage value having for being numbered the branch road of i in closed-loop path; Q
ithe airflow value having for being numbered the branch road of i in closed-loop path;
Adopt Hardy-Cross iterative method to the Q in the distinguished and admirable equation in described loop
isolve, in iterative process, air quantity correction value is calculated according to described iterative formula, will iterate to the Q obtaining when Δ Q is less than setting value
ias the real-time air quantity in tunnel.
Further, describedly according to the attribute data in the tunnel of storage, wind speed that described data collection station monitors and wind pressure data and down-hole minute landscape condition information everywhere, down-hole ventilation situation is everywhere analyzed, and send corresponding early warning information, specifically comprise:
The wind speed monitoring according to described data collection station and wind pressure data, judge whether ventilation system Zhong Ge branch air quantity, wind speed meet the demands, and when distinguished and admirable, carries out the early warning of air flow in laneway state while not meeting the demands;
The wind speed monitoring according to the data collection station that is arranged on getting working face and wind pressure data, analyze the ventilation safety state of getting working face, when finding to ventilate abnormal and potential safety hazard, carries out getting working face ventilation early warning;
The down-hole that the wind speed monitoring according to the attribute data in the tunnel of storing in database, described data collection station and wind pressure data and real-time resolving draw a minute landscape condition is everywhere carried out fail-safe analysis to mine ventilation system, and carries out wind net fail-safe analysis early warning according to analysis result.
Second aspect, the embodiment of the present invention also provides a kind of mine ventilation Online Integer and analyzing and alarming system, and described system comprises data collection station, data processing centre, resolves center, analysis and early warning center and database;
Wherein, described data collection station, is arranged on down-hole key point, for the wind speed monitoring and wind pressure data are sent to data processing centre;
Described data processing centre, is converted to air quantity and pressure difference data for wind speed and the wind pressure data that described data collection station is monitored, and stores described air quantity and pressure difference data into database;
The described center of resolving, for obtain down-hole minute landscape condition information everywhere according to the windage data in the tunnel of described air quantity and pressure difference data and storage, and stores down-hole minute landscape condition information everywhere into described database;
Described analysis and early warning center, for according to the attribute data in the tunnel of storage, wind speed that described data collection station monitors and wind pressure data and down-hole minute landscape condition information everywhere, down-hole ventilation situation everywhere being analyzed, and send corresponding early warning information;
Described database, the wind speed and wind pressure data and the down-hole minute landscape condition information everywhere that for storing the attribute data in tunnel, described data collection station, monitor.
Further, described down-hole key point comprises: transportation lane, exploiting field are entered, return airway, air crossing, ,Jiao Lian tunnel, pedestrian lane and getting working face.
Further, described data collection station comprises air velocity transducer and wind pressure sensor.
Further, described in, resolve center specifically for:
Downcast and returnairshaft in identification ventilation network, wherein, starting point in-degree is that the tunnel that zero out-degree is 1 is downcast, terminal in-degree is that 1 out-degree is that zero tunnel is returnairshaft;
The distinguished and admirable equation of reading loop and iterative formula, the distinguished and admirable equation in described loop is:
Wherein, H
iit is the blast that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road; H
fwind pressure value for ventilation fan in closed-loop path; H
fromfor natural ventilation pressure value in the closed-loop path that comprises downcast and returnairshaft; M is by being comprised a maximum way in closed-loop path;
Described iterative formula is:
Wherein,
K is closed-loop path numbering; I is branch number in closed-loop path; B is a way in closed-loop path; H
k certainlyit is the natural ventilation pressure in k closed-loop path; R
ithe windage value having for being numbered the branch road of i in closed-loop path; Q
ithe airflow value having for being numbered the branch road of i in closed-loop path;
Adopt Hardy-Cross iterative method to the Q in the distinguished and admirable equation in described loop
isolve, in iterative process, air quantity correction value is calculated according to described iterative formula, will iterate to the Q obtaining when Δ Q is less than setting value
ias the real-time air quantity in tunnel.
Further, described analysis and early warning center specifically for:
The wind speed monitoring according to described data collection station and wind pressure data, judge whether ventilation system Zhong Ge branch air quantity, wind speed meet the demands, and when distinguished and admirable, carries out the early warning of air flow in laneway state while not meeting the demands;
The wind speed monitoring according to the data collection station that is arranged on getting working face and wind pressure data, analyze the ventilation safety state of getting working face, when finding to ventilate abnormal and potential safety hazard, carries out getting working face ventilation early warning;
The down-hole that the wind speed monitoring according to the attribute data in the tunnel of storing in database, described data collection station and wind pressure data and real-time resolving draw a minute landscape condition is everywhere carried out fail-safe analysis to mine ventilation system, and carries out wind net fail-safe analysis early warning according to analysis result.
The present invention can carry out Online Integer according to the real-time change of down-hole, obtains the air quantity, wind speed in each tunnel, down-hole etc.; Realize the early warning of underworkings ventilation situation, getting working face ventilation safety situation, for mine ventilation safety management and safety in production provide scientific management instrument and advanced technology means simultaneously.
Accompanying drawing explanation
Fig. 1 is mine ventilation Online Integer in first embodiment of the invention and the flow chart of analysis and early warning method;
Fig. 2 is the particular flow sheet of the step 103 in first embodiment of the invention;
Fig. 3 is the particular flow sheet of the step 104 in first embodiment of the invention;
Fig. 4 is mine ventilation Online Integer in second embodiment of the invention and the structure chart of analyzing and alarming system.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, in accompanying drawing, only show part related to the present invention but not entire infrastructure.
Embodiment mono-
The mine ventilation Online Integer that Fig. 1 provides for the embodiment of the present invention one and the flow chart of analysis and early warning method, this realization flow can be carried out by mine ventilation Online Integer and analyzing and alarming system, this system can be realized by software and/or hardware, be configured in coalmine ventilation management system, underground ventilating network is carried out to real-time Online Integer, and according to calculation result, the ventilation situation of down-hole is carried out to analysis and early warning.Details are as follows for the method:
In the present embodiment, at down-hole key point installation data acquisition terminal, such as, in tunnel, main air blower place, each main monitoring point installation data acquisition terminal, with certain hour interval, gather wind speed and wind pressure data, and send the wind speed collecting and wind pressure data to data processing centre.
Wind speed and wind pressure data that step 102, described data processing centre monitor described data collection station are converted to air quantity and pressure difference data.
In the present embodiment, data processing centre receives wind speed and the wind pressure data that data collection station monitors, and wind speed and wind pressure data are converted to air quantity and pressure difference data.
The definition of air quantity is the long-pending product of wind speed and duct cross-section, and the definition by above-mentioned air quantity can be converted to air quantity by wind speed, the product of the wind speed monitoring by calculating and the sectional area in the tunnel at the air velocity transducer place of monitoring wind speed.Wind pressure data is the same with pressure difference data, and the variation of blast is pressure reduction namely.
In the present embodiment, according to the definition of downcast, returnairshaft, flowing resistance law, air balance law, shunt pressure balance law, choose Hardy-Cross iterative method, using and place, blower fan tunnel air quantity data be installed as the fixedly air quantity in corresponding tunnel in the center of resolving, carry out real-time Online Integer, try to achieve minute landscape condition in tunnel (comprising minute landscape condition of not monitoring tunnel) everywhere, deposit calculation result in database simultaneously.
Above-mentioned real-time Online Integer method can will have blower fan and have natural ventilation pressure effect mesh conversion position without blower fan and the situation that has natural ventilation pressure effect, then choose each loop, according to Hardy-Cross iterative formula, carry out iteration correction wind path respectively, until air quantity is revised in each loop, can ignore and can stop.Above-mentioned real-time Online Integer method is omitted the collection of blower fan curve data and data handling procedure, greatly shortens the preparation before resolving, for ventilation network Online Integer is given security.
In the present embodiment, the wind speed that analysis and early warning center monitors according to the attribute data in the tunnel of having stored in database, described data collection station and wind pressure data and described down-hole key point minute landscape condition information is everywhere analyzed the distribution situation of described down-hole key point, and sends corresponding early warning information according to the analysis result obtaining.Such as, according to the regulation of wind speed in all kinds of tunnels in < < safety regulations in coal mine > >, judge in each tunnel, whether wind speed transfinites and deficiency, carries out airflow velocity early warning; By the monitoring air quantity in tunnel with resolve air quantity, calculate the air quantity percentage error in this tunnel, the situation of change of air quantity in judgement tunnel, is inferred the situation of change of local tunnel windage by air quantity situation of change; Judge that whether work plane, chamber etc. are sufficient with the air quantity of wind point; By Diagonal branch wind speed and direction, judge the reliability of whole wind net.
The technical scheme of the present embodiment, can carry out Online Integer according to the real-time change of down-hole, obtains the air quantity, wind speed in each tunnel, down-hole etc.; Realize the early warning of underworkings ventilation situation, getting working face ventilation safety situation, for mine ventilation safety management and safety in production provide scientific management instrument and advanced technology means simultaneously.
On the basis of technique scheme, the described down-hole key point in step 101 comprises: transportation lane, exploiting field are entered, return airway, air crossing, ,Jiao Lian tunnel, pedestrian lane and getting working face.
On the basis of technique scheme, described data collection station comprises air velocity transducer and wind pressure sensor.
In the present embodiment, wind pressure sensor is generally arranged on the reverse throttle place in the connection roadway between mine, the main air entering and returning well in exploiting field, for monitoring the flowing resistance in whole mine or exploiting field, also can monitor the closure state of crucial tradition of a family simultaneously.In addition, between protrusion-dispelling pick work plane reverse throttle place, the upper and lower crossheading of coal-face, also need to install wind pressure sensor, potential safety hazard and ventilation accident are monitored.
On the basis of technique scheme, step 103 specifically comprises the following steps:
Downcast and returnairshaft in step 1031, identification ventilation network, wherein, starting point in-degree is that the tunnel that zero out-degree is 1 is downcast, terminal in-degree is that 1 out-degree is that zero tunnel is returnairshaft.
Step 1032, the distinguished and admirable equation of reading loop and iterative formula, the distinguished and admirable equation in described loop is:
Wherein, H
iit is the blast that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road; H
fwind pressure value for ventilation fan in closed-loop path; H
fromfor natural ventilation pressure value in the closed-loop path that comprises downcast and returnairshaft; M is by being comprised a maximum way in closed-loop path;
Described iterative formula is:
Wherein,
K is closed-loop path numbering; I is branch number in closed-loop path; B is a way in closed-loop path; H
k certainlyit is the natural ventilation pressure in k closed-loop path; R
ithe windage value having for being numbered the branch road of i in closed-loop path; Q
ithe airflow value having for being numbered the branch road of i in closed-loop path.
In the present embodiment, according to the definition of downcast, returnairshaft, flowing resistance law, air balance law, shunt pressure balance law, release the distinguished and admirable equation in loop.
Wherein, flowing resistance law: under complete turbulent condition, energy consumption when air flows in any tunnel is
H in formula
iit is the dividing potential drop that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road;
Air balance law: in ventilation network, while being incompressible flow, the air quantity that flows into arbitrary node equals the air quantity flowing out, when distinguished and admirable
q in formula
ibe the airflow value of i bar branch road, the air quantity that flows into node is just got, and the air quantity that flows out node is got negative; N is the way that respective nodes is collected;
Wind path pressure balance law: in ventilation network, any closed-loop path, the algebraical sum of various energy equals zero,
Bring the formula of flowing resistance law into above formula and obtain the distinguished and admirable equation in loop:
H in formula
iit is the blast that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road; H
fwind pressure value for ventilation fan in closed-loop path; H
fromfor natural ventilation pressure value in the closed-loop path that comprises downcast and returnairshaft; M is by being comprised a maximum way in closed-loop path;
Step 1033, employing Hardy-Cross iterative method are to the Q in the distinguished and admirable equation in described loop
isolve, in iterative process, air quantity correction value is calculated according to described iterative formula, will iterate to the Q obtaining when Δ Q is less than setting value
ias the real-time air quantity in tunnel.
In the present embodiment, when iterating to Δ Q, be less than 0.001 and revise and when air quantity can be ignored, stop iteration, the Q now obtaining
ias the real-time air quantity in tunnel.
On the basis of technique scheme, step 104 specifically comprises the following steps:
In the present embodiment, to wind place, minimum required airflow being set, value, for this design air flow with wind place, is reported to the police when deficiency in draught.Tunnel allows wind speed to press related specifications value in Table 1, when wind speed does not meet the demands, reports to the police.
Permission airflow velocity in table 1 tunnel
In the present embodiment, the ventilation safety early warning that face-airing report to the police to realize has that flowing resistance is abnormal, circulated air hidden danger, normally closed door opening (Air escape branch), booster are shut down, work plane coal and Gas Outburst etc.
The down-hole that step 1043, the wind speed monitoring according to the attribute data in the tunnel of storing in database, described data collection station and wind pressure data and real-time resolving draw a minute landscape condition is everywhere carried out fail-safe analysis to mine ventilation system, and carries out wind net fail-safe analysis early warning according to analysis result.
In the present embodiment, adopt the method for index evaluation to analyze mine ventilation system reliability, and provide advanced warning grade according to analysis result.Choose, real-time relevant with ventilation monitoring strong, 12 larger indexs of wind net reliability effect are formed to appraisement systems, as shown in table 2.And by the difference that affects wind net reliability standard, define green, blue, yellow, red four alert levels, show greenly when all indexs are all qualified, three and following index show blueness when substantially qualified, three above indexs are that elementary sum shows yellow in good time, show red while needing to rectify and improve project.
Table 2 ventilation system evaluation index and value
On the basis of technique scheme, in step 102, the air quantity in each tunnel, wind speed are dynamically shown on ventilation plan, display mode is directly perceived, clear, is easy to the ventilation situation that ventilating management personnel understand each tunnel, down-hole in real time.
Embodiment bis-
The mine ventilation Online Integer that Fig. 2 provides for the embodiment of the present invention two and the structure chart of analyzing and alarming system, the system of the present embodiment is all applicable to above-described embodiment.As shown in Figure 4, described system comprise data collection station 401, data processing centre 402, resolve center 403, analysis and early warning center 404 and database 405;
Wherein, described data collection station 401, is arranged on down-hole key point, for the wind speed monitoring and wind pressure data are sent to data processing centre.
Described data processing centre 402, is converted to air quantity and pressure difference data for wind speed and the wind pressure data that described data collection station is monitored, and stores described air quantity and pressure difference data into database.
The described center 403 of resolving, for obtain down-hole minute landscape condition information everywhere according to the windage data in the tunnel of described air quantity and pressure difference data and storage, and stores down-hole minute landscape condition information everywhere into described database.
Described analysis and early warning center 404, for according to the attribute data in the tunnel of storage, wind speed that described data collection station monitors and wind pressure data and down-hole minute landscape condition information everywhere, down-hole ventilation situation everywhere being analyzed, and send corresponding early warning information.
Described database 405, the wind speed and wind pressure data and the down-hole minute landscape condition information everywhere that for storing the attribute data in tunnel, described data collection station, monitor.
The technical scheme of the present embodiment, can carry out Online Integer according to the real-time change of down-hole, obtains the air quantity, wind speed in each tunnel, down-hole etc.; Realize the early warning of underworkings ventilation situation, getting working face ventilation safety situation, for mine ventilation safety management and safety in production provide scientific management instrument and advanced technology means simultaneously.
On the basis of technique scheme, down-hole key point comprises: transportation lane, exploiting field are entered, return airway, air crossing, ,Jiao Lian tunnel, pedestrian lane and getting working face.
On the basis of technique scheme, data collection station 401 comprises air velocity transducer 4011 and wind pressure sensor 4012.
On the basis of technique scheme, resolve center 403 specifically for:
Downcast and returnairshaft in identification ventilation network, wherein, starting point in-degree is that the tunnel that zero out-degree is 1 is downcast, terminal in-degree is that 1 out-degree is that zero tunnel is returnairshaft; The distinguished and admirable equation of reading loop and iterative formula, the distinguished and admirable equation in described loop is:
wherein, H
iit is the blast that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road; H
fwind pressure value for ventilation fan in closed-loop path; H
fromfor natural ventilation pressure value in the closed-loop path that comprises downcast and returnairshaft; M is by being comprised a maximum way in closed-loop path; Described iterative formula is:
Wherein, k is closed-loop path numbering; I is branch number in closed-loop path; B is a way in closed-loop path; H
k certainlyit is the natural ventilation pressure in k closed-loop path; R
ithe windage value having for being numbered the branch road of i in closed-loop path; Q
ithe airflow value having for being numbered the branch road of i in closed-loop path; Adopt Hardy-Cross iterative method to the Q in the distinguished and admirable equation in described loop
isolve, in iterative process, air quantity correction value is calculated according to described iterative formula, will iterate to the Q obtaining when Δ Q is less than setting value
ias the real-time air quantity in tunnel.
On the basis of technique scheme, described analysis and early warning center 404 specifically for:
The wind speed monitoring according to described data collection station and wind pressure data, judge whether ventilation system Zhong Ge branch air quantity, wind speed meet the demands, and when distinguished and admirable, carries out the early warning of air flow in laneway state while not meeting the demands;
The wind speed monitoring according to the data collection station that is arranged on getting working face and wind pressure data, analyze the ventilation safety state of getting working face, when finding to ventilate abnormal and potential safety hazard, carries out getting working face ventilation early warning;
The down-hole that the wind speed monitoring according to the attribute data in the tunnel of storing in database, described data collection station and wind pressure data and real-time resolving draw a minute landscape condition is everywhere carried out fail-safe analysis to mine ventilation system, and carries out wind net fail-safe analysis early warning according to analysis result.
In the basic Shang， of technique scheme data processing centre 402, the air quantity in each tunnel, wind speed dynamically can also be shown on ventilation plan, display mode is directly perceived, clear, is easy to the ventilation situation that ventilating management personnel understand each tunnel, down-hole in real time.
The said goods can be carried out the method that any embodiment of the present invention provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious variations, readjust and substitute and can not depart from protection scope of the present invention.Therefore, although the present invention is described in further detail by above embodiment, the present invention is not limited only to above embodiment, in the situation that not departing from the present invention's design, can also comprise more other equivalent embodiment, and scope of the present invention is determined by appended claim scope.
Claims (10)
1. mine ventilation Online Integer and an analysis and early warning method, is characterized in that, described method comprises:
The data collection station that is arranged on down-hole key point is sent to data processing centre by the wind speed monitoring and wind pressure data;
The wind speed that described data processing centre monitors described data collection station and wind pressure data are converted to air quantity and pressure difference data;
The center of resolving obtains down-hole minute landscape condition information everywhere according to the windage data in the tunnel of described air quantity and pressure difference data and storage;
Analysis and early warning center is analyzed down-hole ventilation situation everywhere according to the attribute data in the tunnel of storage, wind speed that described data collection station monitors and wind pressure data and down-hole minute landscape condition information everywhere, and sends corresponding early warning information.
2. method according to claim 1, is characterized in that, described down-hole key point comprises: transportation lane, exploiting field are entered, return airway, air crossing, ,Jiao Lian tunnel, pedestrian lane and getting working face.
3. method according to claim 1, is characterized in that, described data collection station comprises air velocity transducer and wind pressure sensor.
4. method according to claim 3, is characterized in that, described in the center of resolving according to described air quantity and pressure difference data, obtain down-hole minute landscape condition information everywhere, specifically comprise:
Downcast and returnairshaft in identification ventilation network, wherein, starting point in-degree is that the tunnel that zero out-degree is 1 is downcast, terminal in-degree is that 1 out-degree is that zero tunnel is returnairshaft;
The distinguished and admirable equation of reading loop and iterative formula, the distinguished and admirable equation in described loop is:
Wherein, H
iit is the blast that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road; H
fwind pressure value for ventilation fan in closed-loop path; H
fromfor natural ventilation pressure value in the closed-loop path that comprises downcast and returnairshaft; M is by being comprised a maximum way in closed-loop path;
Described iterative formula is:
Wherein,
K is closed-loop path numbering; I is branch number in closed-loop path; B is a way in closed-loop path; H
kthe natural ventilation pressure of doing for oneself in k closed-loop path; R
ithe windage value having for being numbered the branch road of i in closed-loop path; Q
ithe airflow value having for being numbered the branch road of i in closed-loop path;
Adopt Hardy-Cross iterative method to the Q in the distinguished and admirable equation in described loop
isolve, in iterative process, air quantity correction value is calculated according to described iterative formula, will iterate to the Q obtaining when Δ Q is less than setting value
ias the real-time air quantity in tunnel.
5. method according to claim 1, it is characterized in that, describedly according to the attribute data in the tunnel of storage, wind speed that described data collection station monitors and wind pressure data and down-hole minute landscape condition information everywhere, the ventilation situation of down-hole is analyzed, and send corresponding early warning information, specifically comprise:
The wind speed monitoring according to described data collection station and wind pressure data, judge whether ventilation system Zhong Ge branch air quantity, wind speed meet the demands, and when distinguished and admirable, carries out the early warning of air flow in laneway state while not meeting the demands;
The wind speed monitoring according to the data collection station that is arranged on getting working face and wind pressure data, analyze the ventilation safety state of getting working face, when finding to ventilate abnormal and potential safety hazard, carries out getting working face ventilation early warning;
The down-hole that the wind speed monitoring according to the attribute data in the tunnel of storing in database, described data collection station and wind pressure data and real-time resolving draw a minute landscape condition is everywhere carried out fail-safe analysis to mine ventilation system, and carries out wind net fail-safe analysis early warning according to analysis result.
6. mine ventilation Online Integer and an analyzing and alarming system, is characterized in that, described system comprises data collection station, data processing centre, resolves center, analysis and early warning center and database;
Wherein, described data collection station, is arranged on down-hole key point, for the wind speed monitoring and wind pressure data are sent to data processing centre;
Described data processing centre, is converted to air quantity and pressure difference data for wind speed and the wind pressure data that described data collection station is monitored, and stores described air quantity and pressure difference data into database;
The described center of resolving, for obtain down-hole minute landscape condition information everywhere according to the windage data in the tunnel of described air quantity and pressure difference data and storage, and stores down-hole minute landscape condition information everywhere into described database;
Described analysis and early warning center, for according to the attribute data in the tunnel of storage, wind speed that described data collection station monitors and wind pressure data and down-hole minute landscape condition information everywhere, down-hole ventilation situation everywhere being analyzed, and send corresponding early warning information;
Described database, the wind speed and wind pressure data and the down-hole minute landscape condition information everywhere that for storing the attribute data in tunnel, described data collection station, monitor.
7. system according to claim 6, is characterized in that, described down-hole key point comprises: transportation lane, exploiting field are entered, return airway, air crossing, ,Jiao Lian tunnel, pedestrian lane and getting working face.
8. system according to claim 6, is characterized in that, described data collection station comprises air velocity transducer and wind pressure sensor.
9. system according to claim 6, is characterized in that, described in resolve center specifically for:
Downcast and returnairshaft in identification ventilation network, wherein, starting point in-degree is that the tunnel that zero out-degree is 1 is downcast, terminal in-degree is that 1 out-degree is that zero tunnel is returnairshaft;
The distinguished and admirable equation of reading loop and iterative formula, the distinguished and admirable equation in described loop is:
Wherein, H
iit is the blast that i bar branch road consumes; R
iit is the windage that i bar branch road has; Q
iairflow value through i bar branch road; H
fwind pressure value for ventilation fan in closed-loop path; H
fromfor natural ventilation pressure value in the closed-loop path that comprises downcast and returnairshaft; M is by being comprised a maximum way in closed-loop path;
Described iterative formula is:
Wherein, k is closed-loop path numbering; I is branch number in closed-loop path; B is a way in closed-loop path; H
k certainlyit is the natural ventilation pressure in k closed-loop path; R
ithe windage value having for being numbered the branch road of i in closed-loop path; Q
ithe airflow value having for being numbered the branch road of i in closed-loop path;
Adopt Hardy-Cross iterative method to the Q in the distinguished and admirable equation in described loop
isolve, in iterative process, air quantity correction value is calculated according to described iterative formula, will iterate to the Q obtaining when Δ Q is less than setting value
ias the real-time air quantity in tunnel.
10. system according to claim 6, is characterized in that, described analysis and early warning center specifically for:
The wind speed monitoring according to described data collection station and wind pressure data, judge whether ventilation system Zhong Ge branch air quantity, wind speed meet the demands, and when distinguished and admirable, carries out the early warning of air flow in laneway state while not meeting the demands;
The wind speed monitoring according to the data collection station that is arranged on getting working face and wind pressure data, analyze the ventilation safety state of getting working face, when finding to ventilate abnormal and potential safety hazard, carries out getting working face ventilation early warning;
The down-hole that the wind speed monitoring according to the attribute data in the tunnel of storing in database, described data collection station and wind pressure data and real-time resolving draw a minute landscape condition is everywhere carried out fail-safe analysis to mine ventilation system, and carries out wind net fail-safe analysis early warning according to analysis result.
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