CN107133745A - A kind of evaluation on mine ventilation system method - Google Patents
A kind of evaluation on mine ventilation system method Download PDFInfo
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- 238000004422 calculation algorithm Methods 0.000 claims abstract 2
- 238000011524 similarity measure Methods 0.000 claims abstract 2
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- 230000009897 systematic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a kind of evaluation on mine ventilation system method based on Weighted Cluster Analysis method, it implements the good and bad principal element of process choosing influence mine ventilation system, the evaluation index good and bad as mine ventilation system is evaluated, and assign each index weights coefficient, by setting up master pattern storehouse, mine ventilation system quality is divided into outstanding, well, typically, poor four grades, for any sample to be evaluated, weighted cluster algorithm Similarity Measure is carried out after normalized, it can obtain being evaluated the good and bad grade of mine ventilation system, as a result show, mine ventilation system is evaluated using Weighted Cluster Analysis method, evaluation result is reliable, there is directive significance to optimization mine ventilation system.
Description
Technical field
The invention belongs to mine mining field, technical support is provided for mining ventilating.
Background technology
Mine ventilation is a most basic ring in each production link of mine, occupies non-all the time in mine construction and production period
Normal consequence.The reason for all previous great mine disaster accident occurs is probed into, there is close pass with mine ventilation system invariably
System.Mine ventilation system is made up of ventilation power set, ventilation network and its control system.The basic task of mine ventilation be to
Delivered downhole fresh air, to water down and discharge the toxic and harmful gas and dust of underground, it is ensured that the distinguished and admirable quality sum in underground
Amount meets national security sanitary standard, creates good working environment, prevents various injuries and the generation of accident, ensures device for underground man car
The healthy and life security of member.Above-mentioned task is realized, must just there is safe and reliable, economical rationality mine ventilation system.
Therefore, we must understand the state of mine ventilation system by ventilating system evaluation, lead to find out influence mine in time
The undesirable element of wind system simultaneously takes appropriate measures, to prevent the generation of accident.
Good and bad to the mine ventilation system determined to judge, evaluation content includes determining evaluation index, determines each evaluation
Index weights and selection evaluation method.
Influence the factor of mine ventilation system a lot, there is internal factor also to have external factor, and these factors are not
Disconnected change.Set up evaluation on mine ventilation system system, it is topmost to seek to selection and best embody mine ventilation system situation
Index.The present invention starts with terms of the technical feasibility of mine ventilation system, security reliability, economic rationality three sets up ore deposit
Well ventilating system assessment indicator system.Wherein show that the index factor of technical feasibility mainly includes the total blast of mine, mine and had
Imitate air quantity 2 indexs of rate；Show that the index factor of security reliability mainly includes being operated with wind place unstable airflow, blower fan
2 indexs of stability；Show that the rational index factor of systematic economy includes fan efficiency, specific yield ventilation expenditure on power 2
Item index.
1st, the total negative pressure of mine：Influence the total vacuum magnitude of mine factor have many, wherein mainly have well type, expanding design,
The total required airflow of well depth, draft type, mine, the slanting angle of ore body, Mode of Roadway Layout of A Mining-district etc..
《Coal Mine Design specification》The middle total negative pressure of regulation is usually no more than 3000Pa.Mine for only existing a ventilating shaft,
There is the relation that size is identical, symbol is opposite with flowing resistance in the value of its negative pressure.Be aerated for multiple ventilating shafts, it is necessary to according to
The power sum of the multiple ventilating shafts principle equal with the general power of mine ventilation is calculated.
2nd, ventilation efficiency：The effective of wind amount rate of mine refer to all independent return air in underground with wind point (such as digging
Working face, chamber) and the air quantity sum that actually obtains of other tunnels and the percentage of the ratio between the work air quantity of main fan.It is weighing apparatus
Measure the index of mine ventilation technology managerial skills and exploiting field air feed situation.The too small air feed that may result in of effective of wind amount rate is not enough,
Total air intake can not be used effectively completely.General to require, the effective of wind amount rate of mine must not be less than 80%.
3rd, with wind place unstable airflow：Refer to that fresh air enters underground wind place with the unstable airflow in wind place
Afterwards, its air quantity disclosure satisfy that production requirement, and distinguished and admirable direction is held essentially constant.When air quantity distinguished and admirable in mine, wind direction
And quality is fluctuated, and fluctuation range exceed permissible value when, this phenomenon is referred to as wild effect.Ventilation dynamic instability
Or ventilating network unreasonable structure is likely to cause distinguished and admirable unstable.The present invention is carried out with the method for scoring to this index
Quantification processing, scores 10~90 points, every 10 point one successively according to wind place wind direction, distinguished and admirable quality and quantity are good and bad
Shelves, full marks 100.
4th, blower fan run stability：With the deepening of mining level, multiple levels or nugget, exploiting field are produced simultaneously so that
Mine ventilation system becomes complicated, only can not meet mine safety production to air quantity by separate unit pectinid machine operation the need for when, must
Many desk fan blower fan natural and mechanical combined ventilations must be used, the common integration of operation in ventilating network of multi fan is formed.Combined by multi fan and transported
The method turned is aerated, it is necessary to consider the stability of blower fan operating.Many desk fan blower fan integrations of operation and a desk fan blower fan are independent
Operation is different.If the characteristics of can not grasping ventilating fan integration of operation and technology, it will things turn out contrary to one's wishes, consequence is bad, very
Ventilating fan may extremely be damaged.Therefore, select ventilating fan integration of operation scheme when, should from ventilating fan co-operation the characteristics of, effect
Really, stability and reasonability are set out, while considering that wind net windage influences on operating point, it is also contemplated that running efficiency and shaft work
Rate size.The present invention carries out quantification processing with the method for scoring to this index, according to run stability quality with hundred-mark system
Scoring.
5th, chief ventilators efficiency：Fan efficiency refers to that effective power accounts for the percentage of input power.Input power
Energy loss, is mainly caused by factors such as distinguished and admirable impact, the frictions produced in the body of ventilation blower during motion.Many institute's weeks
Know, if can be using air-foil fan and equipment with regard to maximum efficiency can be obtained.Mine Ventilator mainly has axial-flow type and centrifugal
Two kinds, the characteristic curve of fan that both blower fan manufacturers provide is different, is total pressure efficiency curve for centrifugal blower, for
Axial fan is static pressure efficiency curve, and total pressure efficiency is including dynamic pressure, and static pressure efficiency does not include then.The present invention scores
Method to this index carry out quantification processing, scored according to chief ventilators efficiency with hundred-mark system.
6th, specific yield ventilation expenditure on power：Ventilation blower is the main ventilation equipment in mine, and power is big, in mining ventilation work
Need continuously to run round the clock in work, the electric energy of consumption accounts for very big proportion in shaft production.Will in mine ventilation expense budget
Seek the ventilation total output expense for calculating specific yield.When calculating this, first have to calculate main fan operating power consumption and
Portable blower, the power consumption summation of auxiliary ventilating fan operating can obtain total electricity bill, then can obtain specific yield ventilation by mine annual production
Expenditure on power.The specific yield ventilation expenditure on power under shaft production actual conditions and designing unit's yield ventilation are chosen in the present invention
The ratio of expenditure on power, is four grades by 1~1.5 point.
The content of the invention
The present invention provides a kind of evaluation on mine ventilation system method based on weighted cluster, logical to any mine for realizing
Wind system carries out superior and inferior evaluating.
Influence the good and bad factor of mine ventilation system a lot, the present invention chooses the total blast of mine, ventilation efficiency, uses wind
Place unstable airflow, blower fan run stability, fan efficiency, specific yield ventilation six indexs of expenditure on power, mine is led to
Wind system quality is divided into outstanding, good, general, poor four grades, and with Weighted Cluster Analysis to this six of mine ventilation system
Index carries out superior and inferior evaluating.Evaluation procedure is as follows：
1st, evaluation index and master pattern storehouse U are determined
Based on mine concrete condition, the superiority-inferiority rank of mine ventilation system is defined as 4 grades, and set up master die
Type storehouse U：
U={ Ai} (1)
Wherein, AiFor i-th of standard subset (i=1~4) in master pattern storehouse, mine ventilation system superiority-inferiority is represented
I-th of rank, i.e.,：
The total blast of mine, ventilation efficiency, with wind place unstable airflow, blower fan run stability, ventilation blower
Efficiency, specific yield ventilation this six characteristic quantities of expenditure on power are as the index evaluated mine ventilation system superiority-inferiority, then
Have：
Ai=(xi1,xi2,xi3,xi4,xi5,xi6) (3)
In formula：xi1--- to the total blast of influence factor mine of evaluation on mine ventilation system；
xi2--- to the influence factor ventilation efficiency of evaluation on mine ventilation system；
xi3--- to the influence factor wind place unstable airflow of evaluation on mine ventilation system；
xi4--- to the influence factor blower fan run stability of evaluation on mine ventilation system；
xi5--- to the influence factor fan efficiency of evaluation on mine ventilation system；
xi6--- to the influence factor specific yield ventilation expenditure on power of evaluation on mine ventilation system.
According to mine safety code, technical specification and many mining practices experiences, evaluation on mine ventilation system standard is set up
Sample Storehouse, as shown in table 1.
The evaluation on mine ventilation system standard sample database of table 1
2nd, evaluation criterion weight is determined
Weight is the concept of a significance level for representing each index, when evaluating an evaluation object, each
Index is different to the influence degree of institute's evaluation object, and its significance level is also different, and weight calculation is exactly to evaluating to each index
The significance level of object carries out the process of quantification processing.The method for determining weight coefficient is more, will not be repeated here, this literary grace
Determine that the weight coefficient of six evaluation indexes is as shown in table 2 with analytic hierarchy process (AHP).
The evaluation on mine ventilation system index weights coefficient of table 2
3rd, sample B to be evaluated is set up
In the total blast of any mine, ventilation efficiency, with wind place unstable airflow, blower fan run stability, logical
When known to fan efficiency, specific yield ventilation expenditure on power, sample B to be evaluated is constituted, i.e.,
B=( x01, x02, x03, x04, x05, x06) （4）
In formula：x01--- total blast of mine ventilation system to be evaluated；
x02--- the effective of wind amount rate of mine ventilation system to be evaluated；
x03--- the use wind place unstable airflow of mine ventilation system to be evaluated；
x04--- the blower fan run stability of mine ventilation system to be evaluated；
x05--- the fan efficiency of mine ventilation system to be evaluated；
x06--- the specific yield ventilation expenditure on power of mine ventilation system to be evaluated.
4th, normalized
Due to the dimension difference and the great disparity of numerical value magnitude of index, normalization process, place need to be carried out to initial data
Data after reason are dimensionless and belonged between 0~1, specific to handle such as following formula：
X in formulaiminAnd ximaxThe minimum value and maximum of i-th of index in n example are represented respectively.
By 4 superior and inferior evaluating samples of mine ventilation system shown in table 1 after normalized, evaluation index is obtained
Representative instance matrix, it is as follows：
5th, opinion rating is determined
The close and distant relation of sample can be by distance coefficient DijTo weigh：
Dij={ [λ1(x1i-x1j)]2+[λ2(x2i-x2j)]2+…+[λ4(x4i-x4j)]2}1/2, 1≤i≤m, 1≤j≤n (7)
Weight coefficient is metDijIt is smaller, represent that i samples are more similar to j samples.
Accordingly, for any sample to be evaluated, it is known that the total blast of its mine, ventilation efficiency, distinguished and admirable with wind place
When stability, blower fan run stability, fan efficiency, specific yield ventilation six occurrences of expenditure on power, by itself and standard sample
This normalized produces index sample.Its distance coefficient with four master samples is calculated using distance coefficient formula, you can
Obtain the opinion rating type of sample to be evaluated.
Embodiment
Specific implementation method is, according to the total blast of mine, ventilation efficiency, use of the various different ventilating systems in mine
Wind place unstable airflow, blower fan run stability, fan efficiency, specific yield ventilation expenditure on power, set up mine ventilation system
System evaluates the master pattern storehouse of the grade of six index four, and sample to be evaluated and master pattern storehouse then are carried out into distance coefficient similarity
Calculate, the opinion rating belonging to sample is determined finally according to distance coefficient.
By taking certain ore deposit as an example, its six indexs are respectively：The total blast 2895Pa of mine, ventilation efficiency 93%, use wind
77 points of place unstable airflow, 66 points of blower fan run stability, 80 points of fan efficiency, specific yield ventilation expenditure on power 1.31,
Through obtaining index matrix with master sample normalized:
Xj=[0.6583 0.8 0.9 0.5333 0.8333 0.62]
Its Weighted distance coefficient with 4 master samples is calculated, distance coefficient matrix is obtained:
Dij=[0.1446 0.1819 0.2322 0.3784]
Because distance coefficient 0.1819 is minimum value in all Weighted distance coefficients, therefore can be by this sample ventilating system
Opinion rating is considered as belonging to the 2nd class in table 1, the i.e. ore deposit and belongs to good mine ventilation system.
Claims (5)
1. a kind of evaluation on mine ventilation system method based on Weighted Cluster Analysis method, it is characterised in that it implements process
For：The good and bad principal element of selection influence mine ventilation system, the evaluation index good and bad as mine ventilation system is evaluated, and assign
Give each index weights coefficient, by setting up master pattern storehouse, mine ventilation system quality is divided into outstanding, good, general, difference
Four grades, for any sample to be evaluated, carry out weighted cluster algorithm Similarity Measure, you can obtain after normalized
It is evaluated the good and bad grade of mine ventilation system.
2. master pattern storehouse described in claim 1, it is characterised in that according to mine safety code, technical specification and many mines
Practical experience, sets up evaluation on mine ventilation system standard sample database.
3. evaluation criterion weight coefficient is determined described in claim 1, it is characterised in that weight is a weight for representing each index
The concept of degree is wanted, when evaluating an evaluation object, each index is different to the influence degree of institute's evaluation object, its
Significance level is also different, and weight calculation is exactly the mistake for carrying out quantification processing to the significance level of evaluation object to each index
Journey.
4. the good and bad principal element of mine ventilation system is influenceed described in claim 1, it is characterised in that influence mine ventilation system
The good and bad factor of system is a lot, and the present invention chooses the total blast of mine, ventilation efficiency, transported with wind place unstable airflow, blower fan
Turn stability, fan efficiency, specific yield ventilation six indexs of expenditure on power, mine ventilation system quality is divided into outstanding, good
Good, general, poor four grades.
5. Weighted Cluster Analysis method described in claim 1, it is characterised in that Weighted Cluster Analysis method is between research things
Similitude and close and distant relation, according to similarity degree or degree of correlation, the things sort merge to be studied, clustering has
Two kinds, Q types cluster and R types are clustered, and Q types cluster for studying the similitude between sample, sample is classified, utilize herein
The basic thought of Q types cluster is evaluated come the superiority-inferiority to mine ventilation system, and the main thought of Q type clusterings is：It is first
First set up standard sample database and be normalized, the dimension of the data after processing is 1 and belonged between 0~1, the parent of sample
Thin relation can be judged by distance coefficient.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549994A (en) * | 2018-04-23 | 2018-09-18 | 中国电建集团贵州电力设计研究院有限公司 | A kind of evaluation method of coal mine empty water water damage always |
| CN113027526A (en) * | 2021-03-25 | 2021-06-25 | 神华神东煤炭集团有限责任公司 | Method and system for evaluating reliability of mine ventilation system |
| CN115689305A (en) * | 2022-10-27 | 2023-02-03 | 江苏未来智慧信息科技有限公司 | Method and system for evaluating intelligent degree of mine construction |
| CN117875795A (en) * | 2024-03-11 | 2024-04-12 | 成都工喜科技有限公司 | Factory operation condition analysis method and system based on real-time data analysis |
| CN117875795B (en) * | 2024-03-11 | 2024-05-28 | 成都工喜科技有限公司 | Factory operation condition analysis method and system based on real-time data analysis |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108549994A (en) * | 2018-04-23 | 2018-09-18 | 中国电建集团贵州电力设计研究院有限公司 | A kind of evaluation method of coal mine empty water water damage always |
| CN113027526A (en) * | 2021-03-25 | 2021-06-25 | 神华神东煤炭集团有限责任公司 | Method and system for evaluating reliability of mine ventilation system |
| CN113027526B (en) * | 2021-03-25 | 2024-03-22 | 神华神东煤炭集团有限责任公司 | Method and system for judging reliability of mine ventilation system |
| CN115689305A (en) * | 2022-10-27 | 2023-02-03 | 江苏未来智慧信息科技有限公司 | Method and system for evaluating intelligent degree of mine construction |
| CN117875795A (en) * | 2024-03-11 | 2024-04-12 | 成都工喜科技有限公司 | Factory operation condition analysis method and system based on real-time data analysis |
| CN117875795B (en) * | 2024-03-11 | 2024-05-28 | 成都工喜科技有限公司 | Factory operation condition analysis method and system based on real-time data analysis |
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