CN104775841A - Ventilation network security division partitioning method oriented to mine air points - Google Patents
Ventilation network security division partitioning method oriented to mine air points Download PDFInfo
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- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
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Abstract
The invention discloses a ventilation network security division partitioning method oriented to mine air points. The method comprises the steps that six different security division areas of an air inlet area, an air return area, an air using area, an air using area upstream, an air using area downstream and a bypass area are defined; an air using point (a stope face and a driving face) is used as a center, a breadth-first search algorithm is used for conducting traversal analysis on a coal mine ventilation network, and a ventilation network is partitioned in combination with a security division partitioning algorithm. Accordingly, a disaster traceability method based on the security division areas is established, and the method is used for analysis and management of coal mine safety production.
Description
Technical field
The present invention relates to the division methods of coalmine ventilation network structure.
Background technology
Coalmine ventilation network is under the constraint of the condition such as chief ventilators and Ventilation Structures, realize the air feed to roadway network system, its Core Feature is to ensure that each wind point is to the demand of fresh air, by the toxic and harmful of Workplace and dust Control within the limit of regulation, and set up the production environment meeting practitioner's health requirements.For this reason, " safety regulations in coal mine " requires to provide independently separate ventilation for each wind point in down-hole, and proposes strict ventilation quality regulation and safety guarantee requirement for what cannot realize independent ventilation with wind point.
Separate ventilation has multiple advantage, and it is reliable, takes precautions against natural calamities, to combat a natural disaster performance strong; Separate ventilation structure is simple, and distinguished and admirable being easy to regulates, and flowing resistance is little; Can avoid the problem that part tunnel wind speed is too high, be the basic mode of coalmine ventilation, and very meet ventilation system complexity, wind path long, have that spontaneous fire is dangerous, the actual ventilation requirement of the large-scale mine of high methane.
The security against fire guarantee of modern large complicated building is based on the fire compartmentation delimited, similar with it, security partitioning in coal mine ventilation system belongs to the basic Region dividing for ventilation, gas, fire extinguishing analysis and management configuration, respectively by manifesting in security risk, have the roadway set of higher similarity to form in daily management feature, emergency processing strategy etc.Each roadway set forms a security partitioning, roadway in subregion is interconnected (containing being associated by air node), each roadway is all associated with unique security partitioning, and ventilation system is divided into zero lap, exhaustively security partitioning system thus.Get on very well in principle, ventilation system comprises the different security partitioning of mine air intake, mine return air, mine wind, use Feng Qu upstream, use Feng Qu downstream and this six class of bypass, wherein comprise multiple subregion being core with getting working face and leading room with wind district, in general, the security partitioning in mine wind district is consistent with the ventilation subregion applying wind point mutually; May it be then respectively one with Ji Yongfeng district, Feng Qu upstream downstream subregion, also may be multiple, but can not exceed at most with the security partitioning number in wind district, for relatively simple ventilation system or the stronger mine of zoned venting characteristics, the roadway of its upstream and downstream may directly be included and no longer be segmented by each security partitioning with wind point; Bypass district comprises the bypass air channel that all and each wind point parallels in principle, these bypass air channels may there is no each other and contact directly, but as " bypass " in useful wind air channel and the ventilation feature having it common, be usually placed in same security partitioning and no longer segment.
The Regional Characteristics of mire ventilation safety obtains everybody generally approval, but due to the coalmine ventilation complicated network structure, and each local has again inherent association while demonstrating area differentiation, thus divides comparatively difficulty.
Current separate ventilation management relative poor, the ventilation subregion of each wind point is still not clear, and along with the propelling of channel of coal mining working, and wind web frame constantly changes and increasingly numerous and jumbled, makes mine ventilation manage the work becoming complexity and difficulty.Particular problem has: 1, the complexity development of ventilation system, add the difficulty directly managing mining ventilation and safety work with personal experience, often cause ventilation safety manager lack of clear-cut job responsibility, task is heavy, be difficult to the mine ventilation system faced by analysing in depth and understanding, directly have influence on the ability of precognition and strick precaution ventilation safety risk; 2, mine ventilation system is due to reasons such as through, old lane, new lane is discarded, the change of roadway purposes, Ventilation Structures increases and decreases, its topological structure and roadway ventilation attribute constantly change, cause the presentation attributes of security risk in system to change thereupon, ventilation safety manager and technician are difficult to the objective environment being in depth familiar with continuous renewal in time, add and manage the delayed or security risk caused of slipping up; 3, the daily management of ventilation safety and emergency disposal require to hold the overall management and control to security situation, manifest causal succinct understanding to abnormal, the quality of counte-rplan is judged, thus the combination complicated ventilation system being divided into simple module is had to the demand of reality.
Ventilation network is divided into security partitioning, is conducive to the assurance of overall importance to ventilation network, and to the grasp of the information such as air quantity, gas and analysis, Timeliness coverage Problems existing; When ventilation system occurs abnormal, be convenient to the source by subregion order quick positioning question and determine counte-rplan; Based on the management philosophy of security partitioning, be conducive to implementing the fine-grained management that everyone has responsibility and security control to colliery, ensure the safe operation of ventilation system with the system of more science.
Summary of the invention
The object of this invention is to provide a kind of ventilation network security partitioning division methods towards mine wind point, based on the management philosophy of security partitioning, be conducive to implementing the fine-grained management that everyone has responsibility and security control to colliery, ensure the safe operation of ventilation system with the system of more science.
Technical scheme of the present invention is: a kind of ventilation network security partitioning division methods towards mine wind point, is characterized in that comprising following steps:
(1) mine attribute connected-graph model is set up, by the topological structure of mine and attribute information expressed intact in addition;
(2) utilize breadth-first search to analyze the topological structure of mine attribute connection layout, foundation wind point along searching tunnel collection and inversely searching tunnel collection;
(3) set up security partitioning partitioning algorithm, searching tunnel collection with wind point is suitable and against searching on the basis of tunnel collection, ventilation network is being divided into six class security partitionings;
Wherein mine attribute connected-graph model in step (1), this model G={V, E, A} represent, wherein V represents wind net node set; E represents the set in tunnel; A represents community set, and attribute information comprises following ATTRIBUTE INDEX and data type:
A(e
i)＝{A
Type(e
i),A
D(e
i)A
P(e
i),A
Q(e
i)}
A
type(e
i) be tunnel type, described tunnel leads to the functional attributes that type represents tunnel, and show that when tunnel type is coal-face, driving face this tunnel is for use wind point, tunnel type is quantitative attributes;
A
d(e
i) be tunnel wind direction, described tunnel wind direction represents direction distinguished and admirable in tunnel, and tunnel wind direction Boolean represents, described tunnel wind direction is qualitative data;
A
p(e
i) be tunnel blast, the difference of the absolute blast at two ends, blast tunnel, described tunnel is determined, tunnel blast is quantitative data;
A
q(e
i) be tunnel air quantity, described tunnel air quantity represents the size of ventilation in tunnel, and tunnel airflow meter is quantitative data.
The wherein breadth-first search described in step (2):
Wherein described in step (2) by with setting up along searching tunnel collection and inverse search tunnel collection and refer to centered by wind point:
Determine to use wind point according to tunnel type attribute, then according to the wind direction attribute of tunnel type, flow search and inverted air current analysis with BFS with the wind, respectively foundation wind point along searching tunnel collection and against searching tunnel collection,
Wherein along searching tunnel collection: establish air channel e
ifor using wind point, then air quantity partly or entirely carrys out the air channel set of personal wind point, uses E
for (i)represent;
Against searching tunnel collection: establish air channel e
ifor using wind point, then air quantity is partly or entirely gathered in the inflow air channel of wind point, uses E
back (i)represent.
The division methods of the ventilation network six class security partitioning wherein described in step (3) is as follows:
Set up the relational matrix R that air flow in laneway is formed, the distinguished and admirable constituent relation in each element representation two tunnels wherein, r
i,jrepresent tunnel e
iflow into or from tunnel e
jair quantity account for tunnel e
ithe ratio of air quantity.
Use wind district: be actually the expansion with wind point upwards downstream with wind district, and contact tunnel closely with wind point and form, be usually expressed as and all carry out personal wind point with the air quantity in the tunnel in wind district, or whole inflow wind points.With wind district E
use (i)set up as shown in the formula shown in (2)
E
Use(i)＝{e
j|r
i,j＝100％||r
j,i＝100％} (2)
Air intake district: establish inverse search tunnel collection after, ask the public inverse of the useful wind point of institute to search tunnel, namely inversely search common factor that tunnel integrates with regard to the air intake district as ventilation network, calculate by formula (3),
Return air district: in foundation along after searching tunnel collection, asks the public along searching tunnel of the useful wind point of institute, namely suitablely searches common factor that tunnel the integrates return air district as ventilation network, calculate by formula (4), complicated wind net has multiple blower fan and returnairshaft, can set up the return air district of each blower fan respectively
Use Feng Qu upstream: be distinguished and admirable excessive from air intake district to wind district with Feng Qu upstream, it is comparatively mature and stable aerated area, the possibility generally gone wrong is little, sensor is also less, can be used as a region and carry out management and control, with being calculated as of Feng Qu upstream: deduct use wind district with the inverse tunnel collection of searching of wind point, then deduct air intake district, calculate by formula (5)
E
Ups(i)＝E
Back(i)-E
In-E
Use(i)(5)
Use Feng Qu downstream: function and significance with similar with Feng Qu upstream, with being calculated as of Feng Qu downstream: deduct with wind point use wind district along searching tunnel collection, then deduct return air district, calculate by formula (6),
E
Downs(i)＝E
For(i)-E
Out-E
Use(i)(6)
Bypass district: all types of region more than removing in ventilation network, then remaining is bypass district, calculates by formula (7),
The invention discloses a kind of security partitioning division methods based on BFS, ventilation network can be divided into six class regions by different qualities: air intake district, return air district, use wind district, use Feng Qu upstream, use Feng Qu downstream and bypass district.Propose by with centered by wind point (stope, driving face), based on the BFS process in graph theory, and achieve the automatic division of coalmine ventilation network in conjunction with partitioning algorithm.
Advantage of the present invention is: the security partitioning set up can be used as relatively independent region and carries out management and control, when there is the abnormalities such as sensing data fluctuation and gas alarming, can carry out Source Tracing more targetedly.By the source quick position of problem in one or several subregion, notice focused on fast with guide field administrative staff the region that most probable goes wrong, be convenient to the discovery in problem source.Thus Added Management person carries out the ventilation safety management work in colliery.
Accompanying drawing explanation
Fig. 1 is security partitioning of the present invention type schematic diagram.
Fig. 2 is BFS spanning tree of the present invention.
Fig. 3 is ventilation network security partitioning of the present invention partitioning algorithm flow chart.
Fig. 4 is No. two, embodiment of the present invention Huang Ling ore deposit partial ventilation system.
Fig. 5-1 be 62-86 stope of the present invention along searching tunnel and inverse searching tunnel.
Fig. 5-2 be 78-79 stope of the present invention along searching tunnel and inverse searching tunnel.
Fig. 5-3 be 94-96 development end of the present invention along searching tunnel and inverse searching tunnel.
Fig. 5-4 be 93-95 development end of the present invention along searching tunnel and inverse searching tunnel.
Fig. 6 is the division schematic diagram of embodiment of the present invention ventilation safety subregion.
Detailed description of the invention
Below in conjunction with accompanying drawing and concrete example, content of the present invention is described in further details
One, the whole implementation method flow of invention
Ventilation network BFS process, security partitioning partitioning algorithm combine, and just define complete coalmine ventilation network security and divide limited region dividing method, its process as shown in Figure 3.First according to the actual ventilation network of mine, the attributed graph model G of mine is set up; Set up the air quantity constituent relation matrix R in each tunnel; According to air quantity constituent relation foundation wind district E
use (i); Then select one and use wind point, to carry out BFS with wind point for beginning node, set up the suitable of each wind point and search tunnel collection E
for (i); Then wind point is taken along searching union that tunnel integrates as return air district E
out; Set up with Feng Qu downstream E by formula (6)
downs (i); By reverse for the direction of the wind direction attribute in tunnel in attributed graph model G; Then select one and use wind point, to carry out BFS with wind point for beginning node, set up the inverse of each wind point and search tunnel collection E
back (i); Then wind point is taken along searching union that tunnel integrates as air intake district E
in; Set up with Feng Qu downstream E by formula (5)
ups (i); Most back-pushed-type (7) sets up bypass district E
other.
Two, the division principle of security partitioning
The security partitioning of ventilation network refers to from mire ventilation safety angle, with distinguished and admirable interact relation for foundation, ventilation network is divided into the relatively independent regional ensemble having certain general character in ventilation safety.The division demand fulfillment integrality of security partitioning can be found out, the principle such as relation is clear and definite, the degree of coupling is low and business is complete.Specific Principles is as follows:
Security partitioning must have integrality.Only have the structural integrity of each inside, security partitioning, boundary ventilation information perfect, Ventilation analysis, calculating and management could be carried out for subregion inside.Need that the tunnel in security partitioning is interconnected, structural integrity specifically; The air intake of subregion, the node of return air part are clear and definite, information completely.Only ensure that the integrality of security partitioning could realize relatively independent performance of ventilating analysis and management and control;
Upstream-downstream relationship between security partitioning is clear and definite.The conduction of ventilation safety problem is a process being from upstream to downstream.After problem has appearred in a certain tunnel, by the impact of wind direction, the downstream area of himself can be affected.Specify that the upstream and downstream of subregion, then effectively can instruct discovery and the management and control of problem.
The degree of coupling between security partitioning is lower: influencing each other between security partitioning is more convenient to analysis in region and management more less, when carrying out ventilation subregion, the degree of coupling between each subregion should be reduced, namely boundary node is the least possible, and the ventilation situation near nodal tunnel is comparatively stable.Such manager too much need not note the situation of connected regions, and can concentrate one's energy to process the problem in current concern district.
Operation system should not split by security partitioning: ventilate and serve primarily in each setting, therefore should consider the needs of operation system during zoning, be included in the tunnel that a certain business is closely connected in a region.Air intake, return aircourse as being directly connected with stope should be divided in a region with stope, could support ventilation safety analysis and the management of setting so more targetedly.
Three, the attribute connection layout in colliery
The ventilation network in colliery is converted to mine attribute connected-graph model, represents with G={V, E, A}.Wherein, V represents wind net node set; E represents the set in tunnel; A represents community set, and attribute information comprises following ATTRIBUTE INDEX and data type:
A(e
i)＝{A
Type(e
i),A
D(e
i)A
P(e
i),A
Q(e
i)}
A
type(e
i) be tunnel type, described tunnel leads to the functional attributes that type represents tunnel, and show that when tunnel type is coal-face, driving face this tunnel is for use wind point, tunnel type is quantitative attributes;
A
d(e
i) be tunnel wind direction, described tunnel wind direction represents direction distinguished and admirable in tunnel, and tunnel wind direction Boolean represents, described tunnel wind direction is qualitative data;
A
p(e
i) be tunnel blast, the difference of the absolute blast at two ends, blast tunnel, described tunnel is determined, tunnel blast is quantitative data;
A
q(e
i) be tunnel air quantity, described tunnel air quantity represents the size of ventilation in tunnel, and tunnel airflow meter is quantitative data.
Each security partitioning is made up of some air channels, adopts a subset of air channel set E to identify.Emphasize towards using wind point because security partitioning divides, so a part of subregion needs to identify by with wind point tunnel.
Four, the BFS of security partitioning division
In order to carry out security partitioning division, need first to carry out the search of stream with the wind with wind point and inverted air current search.The present invention adopts breadth-first search to search for each wind point, sets up corresponding along searching tunnel collection and inversely searching tunnel collection, as the basis that security partitioning divides.
Width first traversal is a kind of hierarchical searching method in graph theory, use BFS representing in ventilation network with digraph, the spanning tree obtained can represent the interact relation between air channel very clearly, can be used for searching for wind point and search against the wind with the wind.
As shown on the left of Fig. 2, BFS is carried out to a ventilation network, to search for against searching tunnel collection, first that the direction of digraph is reverse, then search for: if air channel 2-1 is for use wind point, then with node v
1for root node; Then add with v
1for all directed node (v of beginning node
2) as the 1st layer of tree, and be labeled as and access; Again to access node for beginning node, searching for it is the directed node of beginning node, if be non-access node, as its lower one deck, and marks; Repeat this process, BFS spanning tree as shown in Figure 2 can be obtained.
Breadth-first search is as follows:
Wherein, the degree of depth BFN (v of node
j) represent; Father node Father (the v of each node
j) represent; Access identities Mark (p
root) represent, 1 is the node of having accessed; The fifo queue of node represents with Q.
Five, the division of security partitioning
Ventilation safety subregion segments the one of complicated ventilation network, by the foundation of security partitioning, can dispose provide valuable foundation and information for the analysis of Safety of Coal Mine Production, management and disaster.
Coalmine ventilation network is divided into different security partitionings, needs first by with flowing search and inverted air current search centered by wind point with the wind, respectively foundation wind point along searching tunnel collection and against searching tunnel collection.Along searching tunnel collection: establish air channel e
ifor using wind point, then air quantity partly or entirely carrys out the air channel set of personal wind point, uses E
for (i)represent; Against searching tunnel collection: establish air channel e
ifor using wind point, then air quantity is partly or entirely gathered in the inflow air channel of wind point, uses E
back (i)represent.If the k of ventilation network is respectively e with wind point
1, e
2..., e
k, by these with set up centered by wind point along search tunnel collection and inverse search tunnel collection after, the division methods of six class security partitionings is specific as follows:
Use wind district: with the tunnel in wind district with in close relations with wind point because these air channels distinguished and admirable or derive from use wind point completely, or inflow wind point completely, therefore need by wind net between two the distinguished and admirable constituent relation in tunnel divide and use wind district.The relation available air quantity constituent relation matrix R that air flow in laneway is formed represents, the distinguished and admirable constituent relation in each element representation two tunnels wherein, r
i,jrepresent tunnel e
iflow into or from tunnel e
jair quantity account for tunnel e
ithe ratio of air quantity.As r
1,2=100% represents tunnel e
1flow into or from tunnel e
2air quantity account for tunnel e
1the ratio of air quantity is 100%, i.e. tunnel e
1apoplexy all flows into or from tunnel e
2; As r
2,1=50% represents tunnel e
2flow into or from tunnel e
1in air quantity account for tunnel e
2the ratio of air quantity is 50%, i.e. tunnel e
2in wind half flow into or from tunnel e
1.
Be actually the expansion with wind point upwards downstream with wind district, and contact tunnel closely with wind point and form, be usually expressed as and all carry out personal wind point with the air quantity in the tunnel in wind district, or whole inflow wind points.With wind district E
use (i)set up as shown in the formula shown in (2).
E
Use(i)＝{e
j|r
i,j＝100％||r
j,i＝100％} (2)
Air intake district: establish inverse search tunnel collection after, ask the public inverse of the useful wind point of institute to search tunnel, namely inversely search common factor that tunnel integrates with regard to the air intake district as ventilation network, calculate by formula (3).It should be noted that, the ventilation network that complexity is higher has multiple downcast, can set up air intake district respectively for each downcast.
Return air district: in foundation along after searching tunnel collection, asks the public along searching tunnel of the useful wind point of institute, namely suitablely searches common factor that tunnel integrates as the return air district of ventilation network, calculates by formula (4).Complicated wind net has multiple blower fan and returnairshaft, can set up the return air district of each blower fan respectively.
Use Feng Qu upstream: be distinguished and admirable excessive from air intake district to wind district with Feng Qu upstream, be comparatively mature and stable aerated area, the possibility generally gone wrong is little, and sensor is also less, can be used as a region and carries out management and control.With being calculated as of Feng Qu upstream: deduct use wind district with the inverse tunnel collection of searching of wind point, then deduct air intake district, calculate by formula (5).
E
Ups(i)＝E
Back(i)-E
In-E
Use(i)(5)
Use Feng Qu downstream: function and significance with similar with Feng Qu upstream, with being calculated as of Feng Qu downstream: deduct with wind point use wind district along searching tunnel collection, then deduct return air district, calculate by formula (6).
E
Downs(i)＝E
For(i)-E
Out-E
Use(i)(6)
Bypass district: all types of region more than removing in ventilation network, then remaining is bypass district, calculates by formula (7).
The type signal of security partitioning as shown in Figure 1.
Six, embodiment
For ore deposit, No. two, Huang Ling, safety of coal mines partition method proposed by the invention is verified.No. two, Huang Ling ore deposit designed productive capacity is annual 7000000, and mine adopts slope development mode, and the single level development in single coal seam, adopts partition type to ventilate.The complete ventilation system in ore deposit, No. two, Huang Ling is very complicated, and example adopts the part in this ore deposit to be example, and has carried out suitable simplification, selected partial ventilation system contain four air intakes and one go out return air inlet, total nearly 60 tunnels, as shown in Figure 4.
This part has four to use wind point, comprises two stopes (62-86,78-79) and two development end (94-96,95-98).With the method based on BFS that the present invention proposes, first four are searched to tunnel collection with the suitable of wind point and analyze against searching tunnel collection, result is as shown in Fig. 5-1,5-2,5-3,5-4.
Along searching tunnel collection and inverse searching on the basis of tunnel collection, the security partitioning partitioning algorithm set up with the present invention is analyzed this ventilation system, finally obtains the security partitioning result of this ventilation system, as shown in Figure 6.Wherein cover the six large security partitioning types that the present invention proposes, mark in the drawings with different lines, due to wherein more with wind point, do not distinguish the upstream and downstream of difference wind point, the details of this part can the content of composition graphs 5-1,5-2,5-3,5-4 be checked.
As can be seen from above-mentioned instance analysis, safety analysis division methods based on BFS proposed by the invention, effectively can split ventilation system, the multiple security partitioning set up has clear and definite ventilation implication, be suitable for carrying out management and control as relatively independent region, in conjunction with the proposed disaster source tracing method based on security partitioning, energy Added Management person carries out the ventilation safety management work in colliery.
In sum, the present invention establishes the concept of ventilation network security partitioning, and gives its division principle, establishes the security partitioning of six quasi-representatives, and constructs security partitioning division methods based on BFS.After the ventilation network of complexity is divided into some security partitionings, each region has certain structure and business independence, like this when carrying out ventilation system analysis and management, can manage by different grain size layering, be convenient to technician and manager grasps the relation of each by stages and the situation of total system, be conducive to expanding management means, promote the level of coal mine safety management, promote the fine-grained management of mire ventilation safety.
Be described in detail content of the present invention above, technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, and the explanation of above embodiment just understands method of the present invention and core concept for helping.It should be pointed out that for those skilled in the art, under the premise of not departing from the present invention, some improvement and modification can also be carried out to invention, also fall in the protection domain of the claims in the present invention.
Claims (5)
1., towards the ventilation network security partitioning division methods of mine with wind point, it is characterized in that comprising following steps:
(1) mine attribute connected-graph model is set up, by the topological structure of mine and attribute information expressed intact in addition;
(2) utilize breadth-first search to analyze the topological structure of mine attribute connection layout, foundation wind point along searching tunnel collection and inversely searching tunnel collection;
(3) set up security partitioning partitioning algorithm, searching tunnel collection with wind point is suitable and against searching on the basis of tunnel collection, ventilation network is being divided into six class security partitionings.
2., as claimed in claim 1 towards the ventilation network security partitioning division methods of mine with wind point, it is characterized in that, mine attribute connected-graph model in step (1), this model G={V, E, A} represent, wherein V represents wind net node set; E represents the set in tunnel; A represents community set, and attribute information comprises following ATTRIBUTE INDEX and data type:
A(e
i)＝{A
Type(e
i),A
D(e
i)A
P(e
i),A
Q(e
i)}
A
type(e
i) be tunnel type, described tunnel leads to the functional attributes that type represents tunnel, and show that when tunnel type is coal-face, driving face this tunnel is for use wind point, tunnel type is quantitative attributes;
A
d(e
i) be tunnel wind direction, described tunnel wind direction represents direction distinguished and admirable in tunnel, and tunnel wind direction Boolean represents, described tunnel wind direction is qualitative data;
A
p(e
i) be tunnel blast, the difference of the absolute blast at two ends, blast tunnel, described tunnel is determined, tunnel blast is quantitative data;
A
q(e
i) be tunnel air quantity, described tunnel air quantity represents the size of ventilation in tunnel, and tunnel airflow meter is quantitative data.
3., as claimed in claim 1 towards the ventilation network security partitioning division methods of mine with wind point, it is characterized in that, the breadth-first search described in step (2):
。
4., as claimed in claim 1 towards the ventilation network security partitioning division methods of mine with wind point, it is characterized in that, described in step (2) by with setting up along searching tunnel collection and inversely searching tunnel collection and refer to centered by wind point:
Determine to use wind point according to tunnel type attribute, then according to the wind direction attribute of tunnel type, flow search and inverted air current analysis with BFS with the wind, respectively foundation wind point along searching tunnel collection and against searching tunnel collection,
Wherein along searching tunnel collection: establish air channel e
ifor using wind point, then air quantity partly or entirely carrys out the air channel set of personal wind point, uses E
for (i)represent;
Against searching tunnel collection: establish air channel e
ifor using wind point, then air quantity is partly or entirely gathered in the inflow air channel of wind point, uses E
back (i)represent.
5., as claimed in claim 1 towards the ventilation network security partitioning division methods of mine with wind point, it is characterized in that, the division methods of the ventilation network six class security partitioning described in step (3) is as follows:
Set up the relational matrix R that air flow in laneway is formed, the distinguished and admirable constituent relation in each element representation two tunnels wherein, r
i,jrepresent tunnel e
iflow into or from tunnel e
jair quantity account for tunnel e
ithe ratio of air quantity.
Use wind district: be actually the expansion with wind point upwards downstream with wind district, and contact tunnel closely with wind point and form, be usually expressed as and all carry out personal wind point with the air quantity in the tunnel in wind district, or whole inflow wind points.With wind district E
use (i)set up as shown in the formula shown in (2)
E
Use(i)＝{e
j|r
i,j＝100％||r
j,i＝100％} (2)
Air intake district: establish inverse search tunnel collection after, ask the public inverse of the useful wind point of institute to search tunnel, namely inversely search common factor that tunnel integrates with regard to the air intake district as ventilation network, calculate by formula (3),
Return air district: in foundation along after searching tunnel collection, asks the public along searching tunnel of the useful wind point of institute, namely suitablely searches common factor that tunnel the integrates return air district as ventilation network, calculate by formula (4), complicated wind net has multiple blower fan and returnairshaft, can set up the return air district of each blower fan respectively
Use Feng Qu upstream: be distinguished and admirable excessive from air intake district to wind district with Feng Qu upstream, it is comparatively mature and stable aerated area, the possibility generally gone wrong is little, sensor is also less, can be used as a region and carry out management and control, with being calculated as of Feng Qu upstream: deduct use wind district with the inverse tunnel collection of searching of wind point, then deduct air intake district, calculate by formula (5)
E
Ups(i)＝E
Back(i)-E
In-E
Use(i)(5)
Use Feng Qu downstream: function and significance with similar with Feng Qu upstream, with being calculated as of Feng Qu downstream: deduct with wind point use wind district along searching tunnel collection, then deduct return air district, calculate by formula (6),
E
Downs(i)＝E
For(i)-E
Out-E
Use(i)(6)
Bypass district: all types of region more than removing in ventilation network, then remaining is bypass district, calculates by formula (7),
。
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