CN104239679A - Evaluation method of coal seam group ascending safety mining - Google Patents
Evaluation method of coal seam group ascending safety mining Download PDFInfo
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- CN104239679A CN104239679A CN201410338567.XA CN201410338567A CN104239679A CN 104239679 A CN104239679 A CN 104239679A CN 201410338567 A CN201410338567 A CN 201410338567A CN 104239679 A CN104239679 A CN 104239679A
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Abstract
The invention relates to an evaluation method of coal seam group ascending safety mining, and the method is suitable for evaluating the feasibility of the coal seam group ascending safety mining. The method overcomes the defects of other evaluation methods, has the advantages of being convenient to use, safe and reliable, wide in application scope and high in evaluation reliability, and well solves the problems in the coal mine upward mining feasibility analysis at present, thus providing guarantee for mine safety production.
Description
Technical field
The present invention relates to the evaluation method of the up safe working of a kind of coal seam group, be applicable to the assessment of the up safe working feasibility of colliery coal seam group.
Background technology
Upward mining, refers in a coal measure strata, containing two-layer and above and at regular intervals and coal seam that is extraction value, mining sequence is first adopt underlying seam, and then adopts superjacent.Upward mining is a kind of special mining type, and the existence of this mining type has history, objective and subjective reason.In China, what the exploitation of coal was generally taked is downstriker, must carry out strict qualification before needing to carry out the construction of Upward mining coal seam.At present, although Upward mining method of discrimination is more, many based on experimental formula, there is no obvious relevance between various method, can not effectively evaluate coal seam group Upward mining feasibility really.For solving this problem, invent this patent.
Summary of the invention
The pre-resolved problem of the present invention is the evaluation of the up safe working feasibility in colliery, PCA (principal component analysis (PCA)) is adopted first to carry out modeling to Upward mining influence factor, variance contribution ratio is adopted to carry out the calculating of weight to institute's established model again, the result drawn, to embody the height of feasibility, finally realizes the assessment of Upward mining feasibility.
PCA that the present invention adopts (principal component analysis (PCA)) method, first set up hyperspace vector matrix, adopt the method for dimensionality reduction that unnecessary index is omitted, choose several overall targets, to raw data standardization, then ask correlation matrix according to normalized matrix.And with SPSS software (Statistical Product and Service Solutions is a " statistical product and service solution " software), process the data of PCA statistics.Then adopt expert estimation, calculating, draw final mark, divide feasibility grade.
Beneficial effect of the present invention: the present invention can overcome the shortcoming of other evaluation methods, there is esy to use, safe and reliable, applied widely, evaluation high reliability, well solve the difficulty that the Upward mining feasibility analysis of current colliery runs into, for mine safety production provides safeguard.
Accompanying drawing explanation
Fig. 1 is Upward mining influence factor indicatrix.
Fig. 2 is SPSS software process major component data plot.
Fig. 3 is that major component divides poor Contribution Rate figure.
Fig. 4 is the weight sequencing figure of rear Upward mining influence factor index as calculated.
Embodiment
Below in conjunction with accompanying drawing, enforcement of the present invention is further described:
1. the actual geologic condition from mining area, finds out each influence factor that can fully demonstrate Upward mining technical characteristic, in this, as evaluation index, sees Fig. 1.
2., according to the model of Fig. 1, design seismic wave questionnaire, the expert then finding more than 10 gives a mark according to the geologic condition of questionnaire content to 10 Upward mining mines.The result of marking is added up, and uses SPSS software data processing, see Fig. 2.
3. draw point difference contribution rate of major component, see Fig. 3, this point of difference contribution rate is the weight of major component, then to the coefficient weighted mean normalization in each major component linear combination of this index, it the results are shown in Figure 4.
4. according to the above results, calculate score, and draw grade.
Claims (2)
1. an evaluation method for the up safe working of coal seam group, is characterized in that:
The present invention adopts PCA (principal component analysis (PCA)), and in the selection of index, the composition selected by it selects to comprise former index most information from entirety; In index relevance, emphasize the objectivity between index, the relation between the process of its process and index is determined by data; In the essential aspect of algorithm, factor dominates the execution of algorithm qualitatively, and whether quantitative result correctly depends on modeling person's judging whether correctly object completely.
2. in the Upward mining evaluation method that the present invention adopts, final PCA score " > 90 points " is " outstanding ", score " 75-90 divides " is " well ", score " 60-75 divides " is " generally ", score " 45-60 divides " is " poor ", and score " < 45 points " is " very poor ".
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| CN201410338567.XA CN104239679A (en) | 2014-07-12 | 2014-07-12 | Evaluation method of coal seam group ascending safety mining |
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| CN201410338567.XA CN104239679A (en) | 2014-07-12 | 2014-07-12 | Evaluation method of coal seam group ascending safety mining |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766242A (en) * | 2015-03-25 | 2015-07-08 | 山东科技大学 | Method for evaluating dangerousness of water inrush from coal floor |
| CN104978495A (en) * | 2015-07-20 | 2015-10-14 | 西安科技大学 | Miner mental load evaluation method based on brain electrical detection |
| CN105046409A (en) * | 2015-06-26 | 2015-11-11 | 中国矿业大学 | Coal seam group ascending mining feasibility comprehensive evaluation and technical support system establishment method |
| CN106055892A (en) * | 2016-05-27 | 2016-10-26 | 太原理工大学 | Method for determining exploitation feasibility of middle-layer abandoned coal in composite pillar type ascending mining area |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766242A (en) * | 2015-03-25 | 2015-07-08 | 山东科技大学 | Method for evaluating dangerousness of water inrush from coal floor |
| CN105046409A (en) * | 2015-06-26 | 2015-11-11 | 中国矿业大学 | Coal seam group ascending mining feasibility comprehensive evaluation and technical support system establishment method |
| CN105046409B (en) * | 2015-06-26 | 2021-04-23 | 中国矿业大学 | Comprehensive evaluation of coal seam group ascending mining feasibility and establishment method of technical support system |
| CN104978495A (en) * | 2015-07-20 | 2015-10-14 | 西安科技大学 | Miner mental load evaluation method based on brain electrical detection |
| CN106055892A (en) * | 2016-05-27 | 2016-10-26 | 太原理工大学 | Method for determining exploitation feasibility of middle-layer abandoned coal in composite pillar type ascending mining area |
| CN106055892B (en) * | 2016-05-27 | 2019-03-26 | 太原理工大学 | The method of discrimination of coal mining feasibility is abandoned in a kind of residual exploiting field middle layer of composite cutter pillar |
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