CN103758555B - The method being automatically generated ventilation network map by coalmine ventilation network foundation data - Google Patents
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Abstract
The invention discloses a kind of method being automatically generated ventilation network map by coalmine ventilation network foundation data, comprise the following steps: the preparation of ventilation network basic data；The integrity detection of mine ventilation network basic data；The generation of ventilation network structural framing；The drafting of ventilation network map；Draw and use wind place；Draw node；Draw branch.The present invention utilizes that coalmine ventilation network foundation data are automatically generated ventilation network map speed block by computer, efficiency is high, workload is little, not error-prone, and convenient adjusts.
Description
Technical field
The invention mainly relates to field, colliery, particularly relate to a kind of method being automatically generated ventilation network map by coalmine ventilation network foundation data.
Background technology
Coal mine ventilation system provides existence necessary oxygen for underground work personnel, takes away the poisonous and harmful substance such as gas, dust simultaneously, is the basic guarantee ensureing Safety of Coal Mine Production, is a most basic ring in each production link in colliery.But, coal mine ventilation system is the complication system being made up of hundreds of crisscross roadways.For convenience of the analysis to ventilating system, utilize the method for graph theory that coal mine ventilation system is described abstractly, coal mine ventilation system is depicted as a system being made up of node, branch and attribute thereof, is called ventilation network map, as shown in Figure 1.
Coalmine ventilation network utilize node, branch these intuitively geometric figure to represent ventilating system, it is possible to intuitively, clearly reflect the structure of ventilation network and distinguished and admirable flow behavior, be by the basis of various Ventilation analysis and calculating.
But owing to coalmine ventilation network is usually quite complexity, tunnel number is many, thus the drafting of coalmine ventilation network is a very loaded down with trivial details job.Drawing not only that speed is slow, efficiency is low, workload is big by hand, be prone to make mistakes, and be inconvenient to adjust, meanwhile, also tend to unsatisfactory in attractive in appearance and coordination, amendment is got up also very inconvenient.Thus utilizing computer that coalmine ventilation network foundation data are automatically generated ventilation network map is trend of the times.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of method being automatically generated ventilation network map by coalmine ventilation network foundation data.
The present invention is achieved by the following technical solutions:
The method being automatically generated ventilation network map by coalmine ventilation network foundation data, it is characterised in that include following steps:
(1) preparation of ventilation network basic data
1) in ventilation network basic data, first carry out adding the item of the type characterizing a certain branch, wherein type be 1 expression be general branch, type be 2 expressions be with wind place branch, include the coal-face branch of fixing air quantity branch, local fan ventilation branch, standby face branch and fixing air quantity with wind place branch, type be 3 expressions be blower fan branch；
In order to describe conveniently, the mode of beginning node-end-node is used to represent some branch；
2), 3 two-dimensional integer type Dynamic Array: fenzhi of definition (, 2), yfdd (, 3) and fengji (, 2), be respectively used to store all branches, useful wind place branch and all blower fan branches；And fenzhi, yfdd and fengji array is read in respectively in all branches in ventilation network basic data, useful wind place branch of institute and all blower fan branches；
For convenience of description, if the quantity of element respectively Nfz, Nyf and Nfj in fenzhi, yfdd and fengji array；
(2) integrity detection of mine ventilation network basic data
Whether the integrity of detection ventilation network basic data, namely with or without flowing into and without the detection flowing out node in data；Specific algorithm is as follows:
Define 1 one-dimensional integer type Dynamic Array mNode (), all elements in traversal fenzhi array, determine maximum node number N, redefining mNode array is mNode (N), traversal fenzhi array, calculates the occurrence number of each beginning node and end-node in fenzhi array, is 1 if there is number of times again, this node it is described or flows into node for nothing, or being without flowing out node；
If existed without flowing into node or without flowing out node, then illustrating that mine ventilation network basic data exists mistake, should again detect again after first revising basic data according to testing result and carrying out next step operation；
(3) generation of ventilation network structural framing
Specific Principles and flow process are as follows:
1), determine that having several subsystem, method in whole ventilation network map is have several blower fan just to have several subsystem in ventilation network basic data；
2), determine which subsystem each wind place belongs to；
3), each subsystem all paths maximum for return side node is placed on the Far Left of subsystem, and corresponding with this path with wind place be placed on place subsystem the Far Left in useful wind place；
4), with the horizontal level at place, wind place for the 0th layer, node is arranged in vertical direction in units of layer, with the layer value of wind place upper node be on the occasion of, the layer value of bottom node is negative value；
5), each except leftmost wind place use wind place in each subsystem, and the number of plies of the node to be ultimately connected on the path that return side node is maximum arranges to the right successively for foundation；
6), in the horizontal direction, with the node in each layer in top, wind place, it is evenly arranged by layer at subsystem internal；With the node in the lower layers of wind place, it is evenly arranged by layer in whole network；
7), branch is connected according to the position in wind place and node；
Determine that the algorithm of the number of plies at nodes when each wind place belongs to which subsystem, each No. 1 node in arrival top, wind place, each node place is as follows:
A, 1 one-dimensional integer type Dynamic Array mNodeLayer () of definition are for depositing the number of plies of each node；Define one-dimensional integer type Dynamic Array mYfNumsUp () for depositing nodes during No. 1 node in arrival top of each wind place；Define one-dimensional integer type Dynamic Array mYfNumsDown () for depositing nodes during No. 1 node in arrival bottom, each wind place；Define one-dimensional character string type Dynamic Array mYfTongLuUp () for store from each with wind place to No. 1 node in top time each node of experiencing；Define one-dimensional character string type Dynamic Array mYfTongLuDown () for store from each with wind place to No. 1 node in bottom time each node of experiencing；Define 1 one-dimensional integer type Dynamic Array mXiTong () for depositing the quantity of subsystem in whole ventilating system；
All elements in b, traversal fenzhi array, determine maximum node number N, redefining mNodeLayer array is mNodeLayer (N), and owing to the quantity of subsystem is the same with the quantity of blower fan branch, thus mXiTong array has Nfj element；
C, subfunction is utilized to calculate nodes when each wind place belongs to which subsystem, each No. 1 node in arrival top, wind place and the number of plies with the node on top, wind place and return side node place；
(4) drafting of ventilation network map
After utilizing mNodeLayer array, mYfNumsUp array, mYfTongLuUp array and the yfdd array that the method in step (3) generates, i.e. available computer drawing ventilation network map, plot step is: drafting wind place, drafting node, drafting branch；
(4.1) wind place is used in drafting
1) data in yfdd (, 3), are utilized to determine each is with which subsystem wind place belongs to；
2), utilizing mYfNumsUp array, it is determined that the longest path in subsystems, this path drawing is at the Far Left of subsystem；
3) mYfTongLuUp array, is utilized, determine that each is with wind place putting in order from left to right: in each subsystem, each except leftmost wind place use wind place, and the number of plies of the node to be ultimately connected on the path that return side node is maximum arranges to the right successively for foundation；
4), each node is drawn from left to right successively；
(4.2) node is drawn
1) position with the node on top, wind place, is determined
In a, horizontal direction, the sequence node experienced during No. 1 node in each wind place to top and mYfTongLuUp array is utilized to arrange node；
In b, vertical direction, arrange node according to the number of plies at the place of each node and mNodeLayer array；
2) position with the node of bottom, wind place, is determined
In a, horizontal direction, the sequence node experienced time successively according to No. 1 node in each wind place to bottom and mYfTongLuDown array arrange node, and two adjacent sections dot spacing is from equal；
In b, vertical direction, arranging node according to the number of plies at the place of each node and mNodeLayer array, adjacent two layers spacing is equal, and in order to make figure attractive in appearance, interlamellar spacing cannot be less than the twice of node outside diameter；
3), each node is drawn；
(4.3) branch is drawn
According to fenzhi array, connect with wind place and node, node and node, draw out branch.
The invention have the advantage that
The present invention utilizes that coalmine ventilation network foundation data are automatically generated ventilation network map speed block by computer, efficiency is high, workload is little, not error-prone, and convenient adjusts.
Accompanying drawing explanation
Fig. 1 is a typical ventilation network map.、
Fig. 2 is the ventilation network map interior joint of the present invention and with the layout schematic diagram in wind place.
Detailed description of the invention
The method being automatically generated ventilation network map by coalmine ventilation network foundation data, it is characterised in that include following steps:
(1) preparation of ventilation network basic data
A, first carry out adding the item of type characterizing a certain branch in ventilation network basic data, as shown in table 1 below, wherein type be 1 expression be general branch, type be 2 expressions be with wind place branch, include the coal-face branch of fixing air quantity branch, local fan ventilation branch, standby face branch and fixing air quantity with wind place branch, type be 3 expressions be blower fan branch；
In order to describe conveniently, using the mode of beginning node-end-node to represent some branch, as branch 1 is represented by " 1-2 ", branch 10 is represented by " 13-15 "；
Table 1 ventilation network basic data example (part)
| Branch | Beginning node | End-node | Tunnel title | Type | Shape | Supporting | Area | Length | Angle | Resistance coefficient | Required airflow |
| 1 | 1 | 2 | New auxiliary shaft | 1 | Circular | Concrete | 28.26 | 282.6 | 0 | 100 | 0 |
| 2 | 1 | 3 | Main shaft | 1 | Circular | Concrete | 20 | 302 | 0 | 100 | 0 |
| 3 | 1 | 3 | Old auxiliary shaft | 1 | Circular | Concrete | 12.56 | 260 | 0 | 100 | 0 |
| 4 | 2 | 4 | New auxiliary shaft end opening detours | 1 | Semicircular arch | Build arch | 10.2 | 60 | 0 | 100 | 0 |
| 5 | 4 | 5 | Explosives magazine | 2 | Semicircular arch | Build arch | 0 | 0 | 0 | 100 | 2 |
| 6 | 4 | 7 | Two level pair crossdrifts | 1 | Semicircular arch | Shotcrete | 12.4 | 360 | 0 | 100 | 0 |
| 7 | 4 | 7 | The two positive crossdrifts of level | 1 | Semicircular arch | Shotcrete | 10.2 | 380 | 0 | 100 | 0 |
| 8 | 4 | 67 | Brattice | 2 | Semicircular arch | Shotcrete | 0 | 0 | 0 | 100 | 0.5 |
| 9 | 6 | 34 | Inclined shaft connection lane | 1 | Semicircular arch | Shotcrete | 9.8 | 150 | 0 | 100 | 0 |
| 10 | 13 | 15 | 264 air intakes are gone down the hill | 1 | Semicircular arch | Shotcrete | 6.5 | 510 | 0 | 100 | 0 |
| 11 | 14 | 37 | 1311 fortune are along heading end | 2 | Semicircular arch | Shotcrete | 0 | 0 | 0 | 100 | 0.5 |
| 12 | 14 | 38 | Two horizontal Nan great lanes | 1 | Semicircular arch | Shotcrete | 10.2 | 200 | 0 | 100 | 0 |
| 13 | 15 | 17 | Air door | 2 | Semicircular arch | Shotcrete | 0 | 0 | 0 | 100 | 0.5 |
| 14 | 15 | 18 | 264 air intakes are gone down the hill | 1 | Semicircular arch | Shotcrete | 7.8 | 160 | 0 | 100 | 0 |
| 15 | 16 | 21 | Air door | 2 | Semicircular arch | Shotcrete | 0 | 0 | 0 | 100 | 3.5 |
| 16 | 16 | 27 | 2646 lanes | 1 | Semicircular arch | Shotcrete | 6.2 | 100 | 0 | 100 | 0 |
| 17 | 17 | 22 | 264 return air are gone down the hill | 1 | Semicircular arch | Shotcrete | 11.1 | 270 | 0 | 100 | 0 |
| 18 | 18 | 16 | 264 tracks are gone down the hill | 1 | Semicircular arch | Shotcrete | 9.2 | 296 | 0 | 100 | 0 |
| 19 | 18 | 17 | Electric substation | 2 | Semicircular arch | Shotcrete | 0 | 0 | 0 | 100 | 1.5 |
| 20 | 19 | 23 | Tunnel wind | 2 | Semicircular arch | Shotcrete | 0 | 0 | 0 | 100 | 0.5 |
| 21 | 19 | 24 | 2646 machine lanes | 1 | Semicircular arch | Shotcrete | 6.2 | 650 | 0 | 100 | 0 |
| 22 | 20 | 22 | Tunnel wind | 2 | Semicircular arch | Shotcrete | 0 | 0 | 0 | 100 | 1 |
| 23 | 105 | 106 | West air shaft pit shaft | 1 | Circular | Concrete | 12.56 | 212 | 0 | 100 | 0 |
| 24 | 106 | 1 | West air shaft chamber | 3 | Rectangle | Build arch | 15 | 15 | 0 | 100 | 0 |
| ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... |
B, 3 two-dimensional integer type Dynamic Array: fenzhi of definition (, 2), yfdd (, 3) and fengji (, 2), it is respectively used to store all branches, useful wind place branch of institute and all blower fan branches, for instance, if the data in table 1 being read in these 3 arrays, then fenzhi (0,0) value is " 1 " (branch), and the value of fenzhi (0,1) is " 1 " (beginning node), the value of fenzhi (0,2) is " 2 " (end-node)；The value of yfdd (0,0) is " 5 ", and the value of yfdd (0,1) is " 4 ", and the value of yfdd (0,2) is " 5 "；The value of fengji (0,0) is " 24 ", and the value of fengji (0,1) is " 106 ", and the value of fengji (0,2) is " 1 "；If yfdd (0,3)=24, then (0, the branch representated by x) belongs to the extension set branch representated by No. 24 branch (106-1, west air shaft chamber) to yfdd；And fenzhi, yfdd and fengji array is read in respectively in all branches in ventilation network basic data, useful wind place branch of institute and all blower fan branches；For convenience of description, if the quantity of element respectively Nfz, Nyf and Nfj in fenzhi, yfdd and fengji array.
(2) integrity detection of mine ventilation network basic data
Whether the integrity of detection ventilation network basic data, namely with or without flowing into and without the detection flowing out node in data；Such as can retrieve " 1-2 ", " 2-4 ", " 4-5 " branch from table 1, but can not find with 5 for beginning node branch, then node 5 is " without flowing out node "；Can not find the branch being end-node with 13 from table 1, then node 13 is " without flowing into node "；
Specific algorithm is as follows:
Define 1 one-dimensional integer type Dynamic Array mNode (), all elements in traversal fenzhi array, determine maximum node number N, redefining mNode array is mNode (N), traversal fenzhi array, calculates the occurrence number of each beginning node and end-node in fenzhi array, is 1 if there is number of times again, this node it is described or flows into node for nothing, or being without flowing out node；
If existed without flowing into node or without flowing out node, then illustrating that mine ventilation network basic data exists mistake, should again detect again after first revising basic data according to testing result and carrying out next step operation；
(3) generation of ventilation network structural framing
Specific Principles and flow process are as follows:
1), determine that having several subsystem, method in whole ventilation network map is have several blower fan just to have several subsystem in ventilation network basic data, " subsystem 1 " and " subsystem 2 " in Fig. 2；
2), determining which subsystem each wind place belongs to, " with wind place 2 " in Fig. 2 belongs to " subsystem 1 ", " with wind place n+1 " belongs to " subsystem 2 "；
3), each subsystem is all placed on paths maximum for return side node the Far Left of subsystem, and corresponding with this path with wind place be placed on place subsystem the Far Left in useful wind place, " with wind place 1 " and relevant path in Fig. 2, " with wind place n+1 " and the path being correlated with thereof be all placed on the Far Left of place subsystem；
4), with the horizontal level at place, wind place for the 0th layer, node is arranged in vertical direction in units of layer, with the layer value of wind place upper node be on the occasion of, the layer value of bottom node is negative value, as shown in Figure 2；
5), in each subsystem, each except leftmost wind place uses wind place, the number of plies of the node to be ultimately connected on the path that return side node is maximum arranges to the right successively for foundation, as shown in Figure 2 " with wind place 2 " and " with wind place 3 " be ultimately connected to the 2nd layer in " path 1 ", thus come the 2nd and the 3rd (position of " with wind place 2 " and " with wind place 3 " can exchange)；" with wind place 4 " is ultimately connected to the 3rd layer in " path 1 ", thus comes " with wind place 2 " and the right side of " with wind place 3 ", the like；
6), in the horizontal direction, with the node in each layer in top, wind place, it is evenly arranged by layer at subsystem internal；With the node in the lower layers of wind place, it is evenly arranged by layer in whole network, as shown in Figure 2；
7), branch is connected according to the position in wind place and node；
Determine that the algorithm of the number of plies at nodes when each wind place belongs to which subsystem, each No. 1 node in arrival top, wind place, each node place is as follows:
A, 1 one-dimensional integer type Dynamic Array mNodeLayer () of definition are for depositing the number of plies of each node；Define one-dimensional integer type Dynamic Array mYfNumsUp () for depositing nodes during No. 1 node in arrival top of each wind place；Define one-dimensional integer type Dynamic Array mYfNumsDown () for depositing nodes during No. 1 node in arrival bottom, each wind place；Define one-dimensional character string type Dynamic Array mYfTongLuUp () for store from each with wind place to No. 1 node in top time each node (path) of experiencing, for instance: " the use wind place 4 " in Fig. 2 is " 11,14,16,17 " to the path of No. 1 node in top；Define one-dimensional character string type Dynamic Array mYfTongLuDown () for store from each with wind place to No. 1 node in bottom time each node (path) of experiencing；Define 1 one-dimensional integer type Dynamic Array mXiTong () for depositing the quantity of subsystem in whole ventilating system；
All elements in b, traversal fenzhi array, determine maximum node number N, redefining mNodeLayer array is mNodeLayer (N), and owing to the quantity of subsystem is the same with the quantity of blower fan branch, thus mXiTong array has Nfj element；
C, following subfunction is utilized to calculate nodes when each wind place belongs to which subsystem, each No. 1 node in arrival top, wind place and the number of plies with the node on top, wind place and return side node place:
(4) drafting of ventilation network map
After utilizing mNodeLayer array, mYfNumsUp array, mYfTongLuUp array and the yfdd array that the method in step (3) generates, i.e. available computer drawing ventilation network map, plot step is: drafting wind place, drafting node, drafting branch；
(4.1) wind place is used in drafting
1) data in yfdd (, 3), are utilized to determine each is with which subsystem wind place belongs to；
2), utilizing mYfNumsUp array, it is determined that the longest path in subsystems, this path drawing is at the Far Left of subsystem；
3) mYfTongLuUp array, is utilized, determine that each is with wind place putting in order from left to right: in each subsystem, each except leftmost wind place use wind place, and the number of plies of the node to be ultimately connected on the path that return side node is maximum arranges to the right successively for foundation；
4), each node is drawn from left to right successively；
(4.2) node is drawn
1) position with the node on top, wind place, is determined
In a, horizontal direction, the sequence node (mYfTongLuUp array) experienced during No. 1 node in each wind place to top is utilized to arrange node；
In b, vertical direction, arrange node according to the number of plies (mNodeLayer array) at the place of each node.
2) position with the node of bottom, wind place, is determined
In a, horizontal direction, the sequence node (mYfTongLuDown array) experienced time successively according to No. 1 node in each wind place to bottom arranges node, and two adjacent sections dot spacing is from equal；
In b, vertical direction, arranging node according to the number of plies (mNodeLayer array) at the place of each node, adjacent two layers spacing is equal, and in order to make figure attractive in appearance, interlamellar spacing cannot be less than the twice of node outside diameter；
3), each node is drawn；
(4.3) branch is drawn
According to fenzhi array, connect with wind place and node, node and node, draw out branch.
Claims (1)
1. the method being automatically generated ventilation network map by coalmine ventilation network foundation data, it is characterised in that include following steps:
(1) preparation of ventilation network basic data
1) in ventilation network basic data, first carry out adding the item of the type characterizing a certain branch, wherein type be 1 expression be general branch, type be 2 expressions be with wind place branch, include the coal-face branch of fixing air quantity branch, local fan ventilation branch, standby face branch and fixing air quantity with wind place branch, type be 3 expressions be blower fan branch；
In order to describe conveniently, the mode of beginning node-end-node is used to represent some branch；
2), 3 two-dimensional integer type Dynamic Array: fenzhi of definition (, 2), yfdd (, 3) and fengji (, 2), be respectively used to store all branches, useful wind place branch and all blower fan branches；And fenzhi, yfdd and fengji array is read in respectively in all branches in ventilation network basic data, useful wind place branch of institute and all blower fan branches；
For convenience of description, if the quantity of element respectively Nfz, Nyf and Nfj in fenzhi, yfdd and fengji array；
(2) integrity detection of mine ventilation network basic data
Whether the integrity of detection ventilation network basic data, namely with or without flowing into and without the detection flowing out node in data；Specific algorithm is as follows:
Define 1 one-dimensional integer type Dynamic Array mNode (), all elements in traversal fenzhi array, determine maximum node number N, redefining mNode array is mNode (N), traversal fenzhi array, calculates the occurrence number of each beginning node and end-node in fenzhi array, is 1 if there is number of times again, this node it is described or flows into node for nothing, or being without flowing out node；
If existed without flowing into node or without flowing out node, then illustrating that mine ventilation network basic data exists mistake, should again detect again after first revising basic data according to testing result and carrying out next step operation；
(3) generation of ventilation network structural framing
Specific Principles and flow process are as follows:
1), determine that having several subsystem, method in whole ventilation network map is have several blower fan just to have several subsystem in ventilation network basic data；
2), determine which subsystem each wind place belongs to；
3), each subsystem all paths maximum for return side node is placed on the Far Left of subsystem, and corresponding with this path with wind place be placed on place subsystem the Far Left in useful wind place；
4), with the horizontal level at place, wind place for the 0th layer, node is arranged in vertical direction in units of layer, with the layer value of wind place upper node be on the occasion of, the layer value of bottom node is negative value；
5), each except leftmost wind place use wind place in each subsystem, and the number of plies of the node to be ultimately connected on the path that return side node is maximum arranges to the right successively for foundation；
6), in the horizontal direction, with the node in each layer in top, wind place, it is evenly arranged by layer at subsystem internal；With the node in the lower layers of wind place, it is evenly arranged by layer in whole network；
7), branch is connected according to the position in wind place and node；
Determine that the algorithm of the number of plies at nodes when each wind place belongs to which subsystem, each No. 1 node in arrival top, wind place, each node place is as follows:
A, 1 one-dimensional integer type Dynamic Array mNodeLayer () of definition are for depositing the number of plies of each node；Define one-dimensional integer type Dynamic Array mYfNumsUp () for depositing nodes during No. 1 node in arrival top of each wind place；Define one-dimensional integer type Dynamic Array mYfNumsDown () for depositing nodes during No. 1 node in arrival bottom, each wind place；Define one-dimensional character string type Dynamic Array mYfTongLuUp () for store from each with wind place to No. 1 node in top time each node of experiencing；Define one-dimensional character string type Dynamic Array mYfTongLuDown () for store from each with wind place to No. 1 node in bottom time each node of experiencing；Define 1 one-dimensional integer type Dynamic Array mXiTong () for depositing the quantity of subsystem in whole ventilating system；
All elements in b, traversal fenzhi array, determine maximum node number N, redefining mNodeLayer array is mNodeLayer (N), and owing to the quantity of subsystem is the same with the quantity of blower fan branch, thus mXiTong array has Nfj element；
C, subfunction is utilized to calculate nodes when each wind place belongs to which subsystem, each No. 1 node in arrival top, wind place and the number of plies with the node on top, wind place and return side node place；
(4) drafting of ventilation network map
After utilizing mNodeLayer array, mYfNumsUp array, mYfTongLuUp array and the yfdd array that the method in step (3) generates, i.e. available computer drawing ventilation network map, plot step is: drafting wind place, drafting node, drafting branch；
(4.1) wind place is used in drafting
1) data in yfdd (, 3), are utilized to determine each is with which subsystem wind place belongs to；
2), utilizing mYfNumsUp array, it is determined that the longest path in subsystems, this path drawing is at the Far Left of subsystem；
3) mYfTongLuUp array, is utilized, determine that each is with wind place putting in order from left to right: in each subsystem, each except leftmost wind place use wind place, and the number of plies of the node to be ultimately connected on the path that return side node is maximum arranges to the right successively for foundation；
4), each node is drawn from left to right successively；
(4.2) node is drawn
1) position with the node on top, wind place, is determined
In a, horizontal direction, the sequence node experienced during No. 1 node in each wind place to top and mYfTongLuUp array is utilized to arrange node；
In b, vertical direction, arrange node according to the number of plies at the place of each node and mNodeLayer array；
2) position with the node of bottom, wind place, is determined
In a, horizontal direction, the sequence node experienced time successively according to No. 1 node in each wind place to bottom and mYfTongLuDown array arrange node, and two adjacent sections dot spacing is from equal；
In b, vertical direction, arranging node according to the number of plies at the place of each node and mNodeLayer array, adjacent two layers spacing is equal, and in order to make figure attractive in appearance, interlamellar spacing cannot be less than the twice of node outside diameter；
3), each node is drawn；
(4.3) branch is drawn
According to fenzhi array, connect with wind place and node, node and node, draw out branch.
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| CN101644168A (en) * | 2009-05-31 | 2010-02-10 | 北京龙德时代科技发展有限公司 | Ventilation forecasting and early-warning system for mine |
| CN102465708A (en) * | 2010-11-12 | 2012-05-23 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | Mine ventilation information processing system and method |
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