CN112989533A - Mine series ventilation identification method based on component proton method - Google Patents
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Abstract
The invention relates to a mine series ventilation identification method based on a component proton method, and belongs to the technical field of mine operation. The method comprises the steps that a component proton method is used for constructing virtual protons on the air return side of a working face according to the flowing of a roadway ventilation network, the virtual protons move along with wind flow and reach a ventilation network wind distribution node, and the virtual protons are automatically split into a plurality of protons according to the number of the wind distribution node air return roadways and respectively move along the air return roadways; by analogy, finally the protons reach and are gathered at the air return wellhead; if the virtual protons on the return air side of one working surface pass through the air inlet side of the other working surface, the two working surfaces are connected in series for ventilation, so that the potential safety hazard is great; calculating a series ventilation path between the series ventilation working faces by a traceability method; the identification method provides technical support for the coal mine to master the air flow distribution of the underground roadway, and provides scientific management tools and advanced technical means for safety management and safety production of mine ventilation gas.
Description
Technical Field
The invention belongs to the technical field of mine operation, and relates to a mine series ventilation identification method based on a component proton method.
Background
The mine ventilation system is the guarantee of mine safety production, and the effective ventilation mode can play key roles of reducing the temperature of a mine, diluting toxic and harmful gas, providing fresh air flow for underground operators and the like; wind production is an important rule for mine safety production; the mine working face is a key area for gas emission, gas poisoning is caused when the gas concentration exceeds a certain limit, personnel suffocation is caused, and disastrous accidents such as gas explosion and the like can occur when an open fire happens; therefore, toxic and harmful gases can be diluted and taken away by the air flow in the air return area of the working face, and the air return area belongs to polluted air flow and is not suitable for operation and provides fresh air flow for other air-requiring points. Because mine ventilation is a complex network structure, potential safety hazards of series ventilation may exist between two working faces, and at present, no effective method is available for accurately judging whether series ventilation exists between operation sites in a mine ventilation network.
The invention relates to a mine series ventilation identification method based on a fractal proton method, which provides a mine working face series ventilation identification method based on a proton fractal method, wherein the fractal proton method flows according to a mine ventilation network, virtual protons are constructed on the return air side of a working face, move along with airflow and reach ventilation network air distribution nodes, and are automatically split into a plurality of protons according to the number of the return air tunnels of the air distribution nodes, and the protons respectively move along the return air tunnels; by analogy, finally the protons reach and are gathered at the air return wellhead; if the virtual proton of a working face return air side is measured through the air inlet of the other working face, the two working faces are connected in series for ventilation, and great potential safety hazards are caused. The identification method provides technical support for the coal mine to master the air flow distribution of the underground roadway, and provides scientific management tools and advanced technical means for safety management and safety production of mine ventilation gas.
Disclosure of Invention
In view of the above, the present invention provides a mine series ventilation identification method based on a proton method. The method is a mine working face series ventilation identification method based on a proton component method, wherein the component proton method flows according to a well and tunnel ventilation network, virtual protons are constructed on the return air side of a working face and move along with wind flow to reach ventilation network wind distribution nodes, and the virtual protons are automatically split into a plurality of protons according to the number of the return air tunnels of the wind distribution nodes and move along the return air tunnels respectively; by analogy, finally the protons reach and are gathered at the air return wellhead; if the virtual proton of a working face return air side is measured through the air inlet of the other working face, the two working faces are connected in series for ventilation, and great potential safety hazards are caused. The identification method provides technical support for the coal mine to master the air flow distribution of the underground roadway, and provides scientific management tools and advanced technical means for safety management and safety production of mine ventilation gas.
In order to achieve the purpose, the invention provides the following technical scheme:
a mine series ventilation identification method based on a component proton method comprises the following steps:
s1: assuming an infinitely cleavable proton O;
s2: a digital mine ventilation system, a ventilation network topological structure is established, and a directed graph G is establishedHaving a direction(V, E); wherein V ═ { V ═ V1,v2,v3,…,vnIs the set of network nodes, E ═ E1,e2,e3,…,emThe set of directed edges; the mine working face is a tunnel under which coal mining operation is carried out, and is in a directed graph GHaving a directionA specific directed edge E in (V, E)Working surface(vInitiation of,vEnd up) And has a start node; judging whether the working surfaces are in series ventilation or not, and if so, judging whether the oriented edge starting nodes of the working surfaces are in series connection or not, if so, judging that the oriented edge starting nodes of the working surfaces are in series connection or not, and if not, judging that the working surfaces are not in series connection and ventilation;
s3: according to a directed graph GHaving a directionEstablishing an adjacency matrix MAdjacent toIncludes a vertex table for sequentially storing node information and a relation matrix MRelationships betweenStoring the interrelationship between the vertexes; if the directed graph has n nodes, the relationship matrix is an n × n square matrix, and has the following properties:
s4: assuming that an infinitely splittable proton O is placed with a face directed edge eWorking surface(vInitiation of,vEnd up) Up to node v according to the direction of the directed edgeEnd upStopping;
s5: according to node vEnd upSearching adjacency matrix MAdjacent toTo obtain a node vEnd upV' ═ V, the set of successors of (c) is set1,v2,…,viThe number of subsequent points is assumed to be i; the proton will split into i;
s6: searching relation matrix MRelationships betweenTo obtain a node vEnd upRespectively placing the split sub-protons on the subsequent edges, and continuously moving along the direction of the subsequent edges until the end nodes of the subsequent edges;
s7: repeating the steps S4-S6, and calculating the subsequent nodes of all edges with protons; until no subsequent node exists, the proton reaches the air return wellhead node;
s8: calculating a directed edge set G 'passed by all protons'Having a direction(ii) a Judging whether the geometric side where the working face is located is in the directed graph set G'Having a directionPerforming the following steps; if the proton generated by the working surface passes through the other working surface in the directed graph set, serial ventilation exists between the two working surfaces on the surface; on the contrary, protons generated by the working surfaces do not pass through the other working surface, which indicates that serial ventilation does not exist between the two working surfaces;
s9, if the two working faces have potential safety hazards of series ventilation, calculating a series ventilation path between the working faces by using a traceability method.
Optionally, in S1, protons are generated at the geometric side where the working surface needs to be determined, and the protons are infinitely split according to the number of subsequent lanes, so that the protons flow through all subsequent lanes of the working surface, and if the protons flow through a lane where another working surface is located, it is indicated that there is a potential safety hazard of series ventilation in the two working surfaces, otherwise, there is no potential safety hazard of series ventilation.
Optionally, in S2, the directed edge has a start node and an end node, and the direction is from the start node to the end node; the direction of the directed edge is consistent with the ventilation direction of the roadway in the mine ventilation network.
Optionally, in S9, the tracing method includes: utilizing the protons reaching the air inlet side of the judgment working surface; tracing the split parent proton and recording the path of the proton; and finally, tracing back to the first virtual proton, and calculating all flow paths.
The invention has the beneficial effects that: the method is based on the ventilation network, has a timely and accurate judgment function on the major potential safety hazard of serial ventilation of the judgment working face, and avoids the influence of the dirty air generated by the working face on the safety of another operation place; if the series ventilation exists, the method calculates the series ventilation path, provides technical support for controlling the major potential safety hazard of the coal mine, and provides scientific management tools and advanced technical means for safety management and safety production of mine ventilation gas.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
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For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flow chart of the algorithm of the present invention;
FIG. 2 is a diagram of an algorithm simulation;
FIG. 3 is a flowchart of a tracing algorithm;
fig. 4 is a schematic view of a ventilation network.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Fig. 1 is a flow chart of an algorithm of a mine series ventilation identification method based on a fractal proton method, and the mine series ventilation identification method based on the fractal proton method is characterized by comprising the following steps:
s1 assumes an infinitely cleavable proton O;
s2 digital mine ventilation system, establishing ventilation network topology structure, and establishing directed graph GHaving a direction(V, E); wherein V ═ { V ═ V1,v2,v3,…,vnIs the set of network nodes, E ═ E1,e2,e3,…,emIs a set of directed edges. The mine working face is a tunnel under which coal mining operation is carried out, and is in a directed graph GHaving a directionA specific directed edge E in (V, E)Working surface(vInitiation of,vEnd up) And has a start node; judging whether the working surfaces are in series ventilation or not, if so, proving whether the oriented edge initial nodes of the working surfaces are in series connection or not, if so, performing series ventilation, and if not, performing series ventilationIf the working surfaces are not connected in series, the series ventilation relationship does not exist between the working surfaces;
s3 is according to the directed graph GHaving a directionEstablishing an adjacency matrix MAdjacent toIncludes a vertex table for sequentially storing node information and a relation matrix MRelationships betweenStoring the interrelationship between the vertexes; if the directed graph has n nodes, the relationship matrix is an n × n square matrix, and has the following properties:
s4 As shown in FIG. 2, placing an infinitely splittable virtual proton O with a working surface having an edge eWorking surface(vInitiation of,vEnd up) Up to node v, move it in the direction of the directed edgeEnd upStopping;
s5 according to node vEnd upSearching adjacency matrix MAdjacent toTo obtain a node vEnd upV' ═ V, the set of successors of (c) is set1,v2,…,viThe number of subsequent points is assumed to be i; the proton will split into i.
S6 search relation matrix MRelationships betweenTo obtain a node vEnd upThe split sub-protons are respectively placed on the subsequent edges, and the subsequent edges continue to move along the direction of the subsequent edges until the end nodes of the subsequent edges.
S7 repeats. Repeating the steps S4-S6, and calculating the subsequent nodes of all edges with protons; until there is no subsequent node (protons reach the return air wellhead node).
S8 judging, calculating the directed edge set G 'passed by all protons'Having a direction(ii) a Judging whether the geometric side where the working face is located is in the directed graph set G'Having a directionPerforming the following steps; if the proton generated by the working surface passes through the other working surface in the directed graph set, serial ventilation exists between the two working surfaces on the surface; otherwise, the proton generated by the working surface does not pass through the other working surface, which indicates that no series ventilation exists between the two working surfaces.
And S9, calculating, if the two working faces have potential safety hazards of series ventilation, and calculating a series ventilation path between the working faces by using a traceability method.
Further, the method for identifying mine series ventilation based on the proton method as claimed in claim 1, wherein: the calculation method assumes that protons can be split infinitely, protons are generated at the geometric side where the working face needs to be judged, the protons are split infinitely according to the number of the subsequent roadways, and the protons flow through all the subsequent roadways of the working face, if the protons flow through the roadway where the other working face is, the potential safety hazard of series ventilation exists in the two working faces, otherwise, the potential safety hazard of series ventilation does not exist.
Further illustrating, the directed edge in S2 of claim 1, wherein: the directed edge has a starting node and an end node, and the direction is from the starting node to the end node; the direction of the directed edge is consistent with the ventilation direction of the roadway in the mine ventilation network.
As shown in the calculation flowchart of fig. 3, the tracing method in S9 utilizes the protons reaching the air inlet side of the determination working surface; tracing the split parent proton and recording the path of the proton; and finally, tracing back to the first virtual proton, and calculating all flow paths.
As shown in fig. 4, the working plane 1 is calculated by the tracing method, and the blue region is a virtual proton flow region; the air inlet side of the No. 2 working surface is positioned in the blue area, and the No. 1 and No. 2 working surfaces are connected in series for ventilation; there are significant safety hazards. The red path is a calculated proton flow path from the air return side of the No. 1 working surface to the air inlet side of the No. 2 working surface; the coal mine ventilation safety management department can take corresponding ventilation measures according to the path, and the potential safety hazard is eliminated.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (4)
1. A mine series ventilation identification method based on a component proton method is characterized in that: the method comprises the following steps:
s1: assuming an infinitely cleavable proton O;
s2: a digital mine ventilation system, a ventilation network topological structure is established, and a directed graph G is establishedHaving a direction(V, E); wherein V ═ { V ═ V1,v2,v3,…,vnIs the set of network nodes, E ═ E1,e2,e3,…,emThe set of directed edges; the mine working face is a tunnel under which coal mining operation is carried out, and is in a directed graph GHaving a directionA specific directed edge E in (V, E)Working surface(vInitiation of,vEnd up) And has a start node; judging whether the working surfaces are in series ventilation or not, and if so, judging whether the oriented edge starting nodes of the working surfaces are in series connection or not, if so, judging that the oriented edge starting nodes of the working surfaces are in series connection or not, and if not, judging that the working surfaces are not in series connection and ventilation;
s3: according to a directed graph GHaving a directionEstablishing an adjacency matrix MAdjacent toIncludes a vertex table for sequentially storing node information and a relation matrix MRelationships betweenStoring the interrelationship between the vertexes; if the directed graph has n nodes, the relationship matrix is an n × n square matrix, and has the following properties:
s4: assuming that an infinitely splittable proton O is placed with a face directed edge eWorking surface(vInitiation of,vEnd up) Up to node v according to the direction of the directed edgeEnd upStopping;
s5: according to node vEnd upSearching adjacency matrix MAdjacent toTo obtain a node vEnd upV' ═ V, the set of successors of (c) is set1,v2,…,viThe number of subsequent points is assumed to be i; the proton will split into i;
s6: searching relation matrix MRelationships betweenTo obtain a node vEnd upRespectively placing the split sub-protons on the subsequent edges, and continuously moving along the direction of the subsequent edges until the end nodes of the subsequent edges;
s7: repeating the steps S4-S6, and calculating the subsequent nodes of all edges with protons; until no subsequent node exists, the proton reaches the air return wellhead node;
s8: calculating a directed edge set G 'passed by all protons'Having a direction(ii) a Judging whether the geometric side where the working face is located is in the directed graph set G'Having a directionPerforming the following steps; if the proton generated by the working surface passes through the other working surface in the directed graph set, serial ventilation exists between the two working surfaces on the surface; on the contrary, protons generated by the working surfaces do not pass through the other working surface, which indicates that serial ventilation does not exist between the two working surfaces;
s9, if the two working faces have potential safety hazards of series ventilation, calculating a series ventilation path between the working faces by using a traceability method.
2. The method for judging and identifying the mine series ventilation based on the proton method as claimed in claim 1, wherein: in the step S1, protons are generated at the geometric side where the working face is required to be judged, the protons are infinitely split according to the number of the subsequent roadways, and are enabled to flow through all the subsequent roadways of the working face, if the protons flow through the roadway where the other working face is, the potential safety hazard of series ventilation exists in the two working faces, otherwise, the potential safety hazard of series ventilation does not exist.
3. The method for judging and identifying the mine series ventilation based on the proton method as claimed in claim 1, wherein: in the S2, the directed edge has a start node and an end node, and the direction is from the start node to the end node; the direction of the directed edge is consistent with the ventilation direction of the roadway in the mine ventilation network.
4. The method for judging and identifying the mine series ventilation based on the proton method as claimed in claim 1, wherein: in S9, the tracing method is: utilizing the protons reaching the air inlet side of the judgment working surface; tracing the split parent proton and recording the path of the proton; and finally, tracing back to the first virtual proton, and calculating all flow paths.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115081156A (en) * | 2022-07-21 | 2022-09-20 | 太原理工大学 | Self-perception, self-decision and self-execution intelligent ventilation control platform and control method for mine |
| CN115081156B (en) * | 2022-07-21 | 2022-11-25 | 太原理工大学 | Self-perception, self-decision and self-execution intelligent ventilation control platform and control method for mine |
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