CN114511231A - Comprehensive index evaluation method for mine water ecological health - Google Patents
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Abstract
The invention discloses a comprehensive index evaluation method for mine water ecological health, which comprises the following steps: the method comprises the steps of collecting evaluation indexes, obtaining evaluation index weights through an expert evaluation method, determining evaluation index assigning standards, determining assigning values through interpolation functions according to the index assigning standards, assigning water ecological health levels according to the assigning values, and calculating ecological health comprehensive indexes through a comprehensive index evaluation method based on the water ecological health levels. The method has the advantages that the evaluation indexes can directly reflect the ecological health level of the mine water, meanwhile, the evaluation index parameters are easy to obtain in the actual operation process, after the evaluation index parameters are obtained, the parameter values can be converted into assigned values according to an evaluation standard assigned table, and finally, the artificial assigned weights are distributed to the indexes, so that the water ecological health comprehensive index can be obtained, the calculation process is clear, the evaluation process is scientific, and the accuracy of the water ecological health comprehensive index evaluation is improved.
Description
Technical Field
The invention belongs to the field of ecological evaluation of mine water in coal mines, and particularly relates to a comprehensive index evaluation method for ecological health of mine water.
Background
At present, mine water damage is a great hidden trouble affecting mine safe production. In China, almost all mines face water trouble of different degrees. The most important foundation for preventing and treating the water trouble is to determine the water source of the effluent water so as to take reasonable prevention and treatment measures and countermeasures. For distinguishing mine water sources, two methods are mainly used at present: one method is a water quality analysis method, a water sample is collected for water quality assay, and water source is judged by comparing according to water chemistry indexes; the other method is a field experience method, which is used for judging a water source through experience according to the characteristics of the color, turbidity, smell, taste, water temperature, water pressure and the like of the effluent on site. The prevention and control of mine water damage mainly comprises the steps of establishing a sump underground and draining water by adopting drainage equipment. The water ecological evaluation mainly comprises surface water ecological evaluation and underground water ecological evaluation, an evaluation index system for underground water in a coal mine area is not specifically provided, but the influence of coal mining in the coal mine area on the water ecological environment is very obvious, so that an index system suitable for underground water ecological evaluation in the coal mine area is needed to be established, and the water ecological health condition of mine water is reasonably evaluated.
Disclosure of Invention
The invention aims to provide a comprehensive index evaluation method for the ecological health of mine water and improve the accuracy of comprehensive index evaluation.
In order to achieve the aim, the invention provides a comprehensive index evaluation method for the ecological health of mine water, which comprises the following steps:
the method comprises the steps of collecting evaluation indexes, obtaining evaluation index weights through an expert evaluation method, determining evaluation index assigning standards, determining assigning values through interpolation functions according to the index assigning standards, assigning water ecological health levels according to the assigning values, and calculating ecological health comprehensive indexes through a comprehensive index evaluation method based on the water ecological health levels.
Optionally, the evaluation index includes: the evaluation indexes are divided into two stages, wherein the first-stage evaluation index is the underground water system structure (A)1) Ecological function (A)2) Resource, resourceFunction (A)3) System protection (A)4) Social environment (A)5) Ecological environment (A)6) (ii) a The secondary evaluation index is the thickness (C) of the water-containing layer in the underground water system structure1) Water conductivity of aquifer (C)2) Degree of system openness (C)3) Ecological function groundwater ecological level (C)4) Degree of mineralization of groundwater (C)5) Water and soil erosion degree index (C)6) Precipitation in resource function (C)7) Groundwater supply ratio (C)8) Water shortage (C)9) Sewage treatment rate in system protection (C)10) Water saving ratio (C)11) Water body environmental quality (C)12) Average human GDP index (C) in social environment13) Vegetation coverage (C)14) Degree of public involvement (C)15) Atmospheric PM in ecological Environment10(C16) Surface water chemical oxygen demand (C)17) Noise standard coverage (C)18)。
Optionally, the standard interval is divided according to the influence degree reflected by the evaluation index data value, so that each index value falls within the standard interval.
Optionally, the evaluation index criteria are: very healthy, sub-healthy, unhealthy and ill, the ranges for the standard interval include: [80-l00], [60-80 ], [40-60 ], [20-40 ], and [ 0-20).
Optionally, the assigning standard is determined according to the standard intervals, each standard interval corresponds to one assigning interval, and a membership degree calculation method is adopted to obtain one assigning value corresponding to each index value.
Optionally, the process of determining the assigned value through the interpolation function includes:
respectively generating interpolation functions according to the standard intervals (a, b) and the corresponding assigned intervals [ m, n) under each evaluation level
In particular, b ═ infinity
The one-to-one corresponding relation between the index value x and the assigned value y can be determined through an interpolation function.
Optionally, the process of classifying the water ecology evaluation health level comprises:
here, the water ecology evaluation grades are equally divided from 0 to 100 according to the water ecology health index, [0 to 20) being morbid, [20 to 40) being unhealthy, [40 to 60) being sub-healthy, [60 to 80) being healthy, [80 to 100) being very healthy.
Optionally, the calculating process of calculating the ecological health comprehensive index by using a comprehensive index evaluation method based on the water ecological health grade includes:
in the formula (1): m is a water ecological health comprehensive index; ciAssigning a score to the ith index; xiIs the weight of the ith index; s is the index number.
The invention has the technical effects that: the invention discloses a comprehensive index evaluation method for the ecological health of water in a coal mine, which is characterized in that the set evaluation index can directly reflect the ecological health level of mine water, meanwhile, the evaluation index parameters are easy to obtain in the actual operation process, after the evaluation index parameters are obtained, the parameter values can be converted into assigned values according to an evaluation standard assignment table, and finally, the artificial assigned weights are distributed to all indexes, so that the comprehensive index of the water ecological health can be obtained, the calculation process is clear, the evaluation process is scientific, and the accuracy of the evaluation of the comprehensive index of the water ecological health is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 is a schematic flow chart of comprehensive index evaluation of mine water ecological health according to an embodiment of the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than here.
As shown in fig. 1, the present embodiment provides a comprehensive index evaluation method for mine water ecological health, including:
the method comprises the steps of collecting evaluation indexes, obtaining evaluation index weights through an expert evaluation method, determining evaluation index assigning standards, determining assigning values through interpolation functions according to the index assigning standards, assigning water ecological health levels according to the assigning values, and calculating ecological health comprehensive indexes through a comprehensive index evaluation method based on the water ecological health levels.
Aiming at the special water ecological environment of a coal mine area, the structure, ecological function, resource function, system protection, social environment and ecological environment characteristics of a groundwater system are comprehensively considered, reasonable indexes are selected to construct an evaluation system, and mine water ecological health evaluation is completed. The method comprises the following specific steps:
1. selecting the health evaluation index of underground water in the mining area
The evaluation level is divided into two levels, wherein the first level evaluation index is the underground water system structure (A)1) Ecological function (A)2) Resource function (A)3) And system protection (A)4) Social environment (A)5) Ecological environment (A)6) (ii) a The secondary evaluation index is the thickness of the water-containing layer in the underground water system structure (C)1) Water conductivity of aquifer (C)2) Degree of system openness (C)3) Ecological function groundwater ecological level (C)4) Degree of mineralization of groundwater (C)5) Water and soil erosion degree index (C)6) Precipitation in resource function (C)7) Groundwater supply ratio (C)8) Water shortage (C)9) Sewage treatment rate in system protection (C)10) Water saving ratio (C)11) Water body environmental quality (C)12) Average human GDP index (C) in social environment13) Vegetation coverage (C)14) Degree of public involvement (C)15) Atmospheric PM in ecological Environment10(C16) Surface water chemical oxygen demand (C)17) Noise standard coverage (C)18)。
2. Determining an index weight
Considering that the evaluation of the health of the ecosystem is based on the judgment of people on the health degree of the ecosystem, the weight is scientifically and reasonably distributed according to the importance degree of the index. Now, each index weight is given by an expert evaluation method, and an index weight distribution table is shown in table 1.
TABLE 1
3. Determining each index assigning standard
The scoring criteria for each index and the corresponding scoring intervals are shown in table 2.
TABLE 2
4. Determining the assigned value of each index
The middle standard interval is corresponding to the assigned interval in a linear interpolation mode, the right standard interval is corresponding to the assigned interval in an inverse proportion function fitting interpolation mode, therefore, the assigned value corresponding to any index value in the evaluation standard interval can be calculated, and the interpolation function between the standard interval and the assigned interval is shown in table 3.
TABLE 3
5. Dividing mine water ecological health grade
The mine water ecological health grades are divided, and the water ecological health grading table is shown in table 4.
TABLE 4
6. Comprehensive index evaluation method
And (4) determining the water ecological health comprehensive index M according to the calculation formula (1). The water ecological health rating was determined according to the water ecological assessment scale of table 4.
In the formula (1): m is a water ecological health comprehensive index; ciAssigning a score to the ith index; xiIs the weight of the ith index; s is the index number.
The invention discloses a comprehensive index evaluation method for the ecological health of water in a coal mine, which is characterized in that the set evaluation index can directly reflect the ecological health level of mine water, meanwhile, the evaluation index parameters are easy to obtain in the actual operation process, after the evaluation index parameters are obtained, the parameter values can be converted into assigned values according to an evaluation standard assignment table, and finally, the artificial assigned weights are distributed to all indexes, so that the comprehensive index of the water ecological health can be obtained, the calculation process is clear, the evaluation process is scientific, and the accuracy of the evaluation of the comprehensive index of the water ecological health is improved.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A comprehensive index evaluation method for mine water ecological health is characterized by comprising the following steps:
the method comprises the steps of collecting evaluation indexes, obtaining evaluation index weights through an expert evaluation method, determining evaluation index assigning standards, determining assigning values through interpolation functions according to the index assigning standards, assigning water ecological health levels according to the assigning values, and calculating ecological health comprehensive indexes through a comprehensive index evaluation method based on the water ecological health levels.
2. The method for evaluating the comprehensive index of the ecological health of mine water according to claim 1, wherein the evaluation index comprises: the evaluation indexes are divided into two stages, wherein the first-stage evaluation index is the underground water system structure (A)1) Ecological function (A)2) Resource function (A)3) System protection (A)4) Social environment (A)5) Ecological environment (A)6) (ii) a The secondary evaluation index is the thickness of the water-containing layer in the underground water system structure (C)1) Water conductivity of aquifer (C)2) Degree of system openness (C)3) Ecological function groundwater ecological level (C)4) Degree of mineralization of groundwater (C)5) Soil erosion degree index (C)6) Precipitation in resource function (C)7) Groundwater supply ratio (C)8) Water shortage (C)9) Sewage treatment rate in system protection (C)10) Water saving ratio (C)11) Water environment quality (C)12) Average human GDP index (C) in social environment13) Vegetation coverage (C)14) Degree of public involvement (C)15) Atmospheric PM in ecological Environment10(C16) Surface water chemical oxygen demand (C)17) Noise standard coverage (C)18)。
3. The method for evaluating the comprehensive index of the ecological health of mine water according to claim 1, wherein the standard interval is divided according to the degree of influence reflected by the evaluation index data value, so that each index value falls within the standard interval.
4. The method for evaluating the comprehensive index of the ecological health of mine water according to claim 3, wherein the evaluation index standard comprises the following components: very healthy, sub-healthy, unhealthy and ill, the ranges for the standard interval include: [80-l00], [60-80 ], [40-60 ], [20-40 ], and [ 0-20).
5. The method for evaluating the comprehensive index of the ecological health of mine water according to claim 4, wherein the assigning standard is determined according to standard intervals, each standard interval corresponds to one assigning interval, and a method for calculating the membership degree is adopted to obtain one assigning value corresponding to each index value.
6. The method for evaluating the comprehensive index of the ecological health of the mine water as claimed in claim 5, wherein the process of determining the assigned value through the interpolation function comprises the following steps:
generating interpolation functions according to the standard intervals (a, b) and the corresponding assigned intervals [ m, n) under each evaluation level
In particular, b ═ infinity
The one-to-one corresponding relation between the index value x and the assigned value y can be determined through an interpolation function.
7. The method for evaluating the comprehensive index of the ecological health of mine water according to claim 6, wherein the process of dividing the water ecological evaluation health grade comprises the following steps:
here, the water ecology evaluation grades are equally divided from 0 to 100 according to the water ecology health index, [0 to 20) being morbid, [20 to 40) being unhealthy, [40 to 60) being sub-healthy, [60 to 80) being healthy, [80 to 100) being very healthy.
8. The method for evaluating the comprehensive index of the ecological health of mine water according to claim 1, wherein the calculating process of calculating the comprehensive index of the ecological health by using the comprehensive index evaluation method based on the water ecological health grade comprises the following steps:
in the formula (1): m is a water ecological health comprehensive index; ciAssigning a score to the ith index; xiIs the weight of the ith index; s is the index number.
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Citations (4)
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|---|---|---|---|---|
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| CN109242282A (en) * | 2018-08-24 | 2019-01-18 | 华北水利水电大学 | A kind of River Health Assessment method suitable for fully-loaded stream |
| CN111369106A (en) * | 2020-02-17 | 2020-07-03 | 北京师范大学 | Health evaluation method suitable for lake benthic ecosystem |
| CN113722662A (en) * | 2021-09-03 | 2021-11-30 | 内蒙古农业大学 | ANP theory-based coal-water coordinated mining degree evaluation method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109118101A (en) * | 2018-08-24 | 2019-01-01 | 华北水利水电大学 | A kind of River Health Assessment method suitable for Shelter in South China Cities river |
| CN109242282A (en) * | 2018-08-24 | 2019-01-18 | 华北水利水电大学 | A kind of River Health Assessment method suitable for fully-loaded stream |
| CN111369106A (en) * | 2020-02-17 | 2020-07-03 | 北京师范大学 | Health evaluation method suitable for lake benthic ecosystem |
| CN113722662A (en) * | 2021-09-03 | 2021-11-30 | 内蒙古农业大学 | ANP theory-based coal-water coordinated mining degree evaluation method and system |
Non-Patent Citations (1)
| Title |
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| 池明波: "我国西北矿区水资源承载力评价与科学开采规模决策——以伊宁矿区为例", 中国博士学位论文全文数据库 (工程科技Ⅰ辑), no. 9, 15 September 2019 (2019-09-15), pages 29 - 31 * |
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