CN114003985B - Construction method of comparison model of up-and-down warehouse connection roads of pumped storage power station - Google Patents
Construction method of comparison model of up-and-down warehouse connection roads of pumped storage power station Download PDFInfo
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Abstract
The invention discloses a construction method of a comparison model of connecting roads between an upper warehouse and a lower warehouse of a pumped storage power station, which comprises the steps of firstly, selecting influencing factors based on the principle of a hierarchical analysis method by combining the characteristics of the pumped storage power station, and initially constructing a criterion layer and a target layer frame based on the influencing factors; secondly, the criterion layer is further refined by combining with the current specification, a judgment matrix is constructed, consistency test is carried out, and reasonable weights of all factors of the criterion layer are determined; thirdly, determining the weight of each scheme by quantitatively calculating a judgment matrix under each factor of the scheme layer; and finally, synthesizing weights of all schemes for decision targets according to the sequence from bottom to top, and determining the good and bad sequence of the connection of the upper and lower banks of the pumped storage power station to the road arrangement through quantitative comparison of the weights. According to the method, subjective influence in the scheme comparison and selection process is reduced to the greatest extent through calculation rule setting, and scientificity of the arrangement of the connecting roads of the upper warehouse and the lower warehouse is improved.
Description
Technical Field
The invention relates to the field of pumped storage power station design, in particular to a construction method of a comparison model of a connecting road between an upper warehouse and a lower warehouse of a pumped storage power station.
Background
In the design scheme research of the pumped storage power station, the design of connecting roads at the upper and lower reservoirs is a serious problem in the general layout special research of construction, and the layout has great influence on engineering safety, construction period and the like.
However, the factors related to the connection roads of the upper and lower banks are more, and due to the difference of layout schemes, other connection roads in the field are often required to be arranged together during comparison and selection, so that higher requirements are put on the comprehensiveness of evaluation indexes.
The traditional analytic hierarchy process is a static evaluation system for comprehensive evaluation by an expert aiming at a determined criterion layer and a scheme layer, the design of the connection roads of the upper and lower libraries of the pumped storage power station is a non-standardized design limited by multiple factors such as hydraulic resources, topography and landform, engineering scale and the like, different site selection conditions have great influence on the overall arrangement pattern of the construction, a final scheme is often determined by multiple rounds of comparison and selection, and a static model is difficult to adapt well.
Disclosure of Invention
The invention aims to solve the technical problem of providing a construction method of a comparison model of a pumped storage power station upper and lower warehouse connecting highway based on an improved analytic hierarchy process, and the quality sequence of each scheme is quantitatively calculated through weight.
In order to solve the technical problems, the invention adopts the following technical scheme: a construction method of a comparison model of a connecting road between an upper warehouse and a lower warehouse of a pumped storage power station comprises the following steps:
firstly, selecting analysis indexes by combining the arrangement characteristics of the upper and lower banks of the pumped storage power station and connecting roads based on the principle of an analytic hierarchy process, and establishing a comparison model comprising a target layer, a criterion layer and a scheme layer based on the analysis indexes, wherein the target layer is an optimal scheme of the upper and lower banks of the pumped storage power station, the criterion layer comprises five aspects of technical factors, economic factors, construction period factors, environmental factors, route arrangement and safety factors, and the scheme layer consists of scheme of connecting roads to be compared;
step two, the criterion layer is further refined by combining with the current specification, the relative importance of each factor of the criterion layer is compared in pairs by adopting an improved 1-9 scale method, a judgment matrix is constructed, consistency test is carried out, and reasonable weight is determined;
step three, quantitatively calculating judgment matrixes of five factors, namely technical factors, economic factors, construction period factors, environmental factors, route arrangement and safety, of each scheme in the scheme layer;
and fourthly, according to the sequence from bottom to top of the hierarchy, synthesizing the weights of all schemes for decision targets through the summarization calculation of the weights, and quantitatively comparing and defining the good and bad sequence of the arrangement of the upper and lower banks of the pumped storage power station connected with the road.
The aligning step II comprises the following steps of:
a) Technical factor A 1 Is thinned into an average longitudinal slope B 1 Maximum longitudinal/length of slope B 2 Curve B of return 3 Minimum radius of flat curve B 4 Minimum radius of vertical curve B 5 And minimum slope length B 6 ；
b) Economic factor A 2 Finely divided into civil engineering costs B 7 And land charge B 8 ；
c) Construction period factor A 3 Refined into main connection road construction period B 9 And secondary connection road construction period B 10 The main connection road construction period is further divided into a main connection road construction period B 9-1 And the construction period B of the secondary main connection highway 9-2 ；
d) Environmental factor A 4 Is subdivided into characteristic land areas B 11 Balance B with earth and stone 12 ；
e) Route arrangement and safety factor A 5 Finer to integral joint B 13 And operation and management security B 14 。
The improved 1-9 scale method in the second step is defined as follows:
the consistency check in the second step is as follows:
a) Defining consistency index
Wherein lambda is max In order to judge the maximum eigenvalue of the matrix, m (n) is the rank of the matrix A, B respectively;
b) Definition of the consistency ratio
If CR < 0.1, the consistency check is passed, otherwise the contrast matrix should be reconstructed.
The scale value calculation method of the technical factors in the third step is as follows:
a) Defining technical factor scoring rules
b) Definition scale calculation formula
If Sigma A 1 C x -∑A 1 C y B is greater than or equal to 0 ij ＝1+α A1 [∑A 1 C x -∑A 1 C y ]
If Sigma A 1 C x -∑A 1 C y B < 0 ji ＝1+α A1 [∑A 1 C y -∑A 1 C x ]
Wherein alpha is A1 Represented at A 1 The overall scale adjustment factor under factors, Σa 1 C x 、∑A 1 C y Under the technical factor scoring rule, the x and y major connecting roads PR, the minor major connecting roads SR and the non-major roads FR in the scheme are respectively aimed at the index B i (i=1 to 6), wherein, [ f (x)]Represents f (x) rounded off and
b ij b ji The maximum values were 9.
The calculation formula of the scale value of the economic factor in the step three is as follows:
if A 2 C x -A 2 C y More than or equal to 0
If A 2 C x -A 2 C y < 0 then
Wherein alpha is A2 Represented at A 2 Comprehensive scale under factorsAdjusting the coefficient A 2 C x 、A 2 C y Respectively the schemes x and y aim at the index B 7 、B 8 Of (c) wherein [ f (x)]Represents f (x) rounded off and
in addition, b when one scheme invests more than 45% higher than the other scheme ji Or b ji ＝9。
The scale value formula of the engineering factor in the step three is as follows:
if A 3 C x -A 3 C y B is greater than or equal to 0 ij ＝1+α A3 (A 3 C x -A 3 C y )
If A 3 C x -A 3 C y B < 0 ji ＝1+α A3 (A 3 C y -A 3 C x )
Wherein alpha is A3 Represented at A 3 Comprehensive scale adjustment coefficient under factor A 3 C x 、A 3 C y Scheme x, y for B respectively 9 、B 10 The corresponding construction period of the index, unit: month of which
And b ij B ji The maximum values were 9.
The method for calculating the scale value of the environmental factor in the third step is as follows:
a) Defining a calculation formula for a land feature scale value in an environmental factor
If A 4 C x1 -A 4 C y1 More than or equal to 0
If A 4 C x1 -A 4 C y1 < 0 then
Wherein alpha is A4-1 Scale adjustment representing surface areaInteger coefficient A 4 C x1 、A 4 C y1 The land areas are represented by schemes x and y, respectively, where [ f (x)]Represents f (x) rounded off and
in addition, b when one regimen is symbolically higher than the other by more than 45% ji ＝9；
b) Formula for calculating soil and stone balance scale value in definition technology factor
If it is
Then->
If it is
Then->
Wherein alpha is A4-2 Represents the soil-stone balance scale adjustment coefficient A 4 C x2-w 、A 4 C x2-T A is a 4 C y2-w 、A 4 C y2-T The digging and filling amounts of schemes x and y respectively, wherein
And b ij B ji The maximum values were 9.
The route arrangement and the calculation method of the safety factor in the third step are as follows:
a) Route defining arrangement and safety factor evaluation method
Note that: the 2,4,6 and 8 stages are respectively the median values of the two adjacent judgments.
b) Defining route arrangement and safety factor scale value calculation formula
If A 5 C x -A 5 C y B is greater than or equal to 0 ij ＝1+α A5 (A 5 C x -A 5 C y )
If A 5 C x -A 5 C y B < 0 ji ＝1+α A5 (A 5 C y -A 5 C x )
Wherein alpha is A5 Represented at A 5 Comprehensive scale adjustment coefficient under factor A 5 C x 、A 5 C y Corresponding indexes B of the schemes x and y respectively 13 、B 14 Of (2), wherein
And b ij B ji The maximum values were 9.
And in the fourth step, the weight summary calculation formula is as follows:
in which W is Ai Representing each influencing factor A i Weight of C Ai Representation scheme A i The sum of the comparison coefficients under each index of the factors. The quantitative comparison of the weights is used for determining the order of the arrangement of the upper and lower banks of the pumped storage power station connected with the road.
The beneficial effects of the invention are as follows: the method disclosed by the invention comprehensively considers the influence of multiple factors and related standard requirements, establishes a general mathematical model which can be better suitable for the comparison and selection of the upper and lower warehouse connection highways of the pumped storage power station, reduces subjective influence factors as much as possible, emphasizes dynamic quantitative calculation, and improves the scientificity of the comparison and selection of the scheme.
Drawings
Fig. 1 is a flow chart of the steps of the present invention.
FIG. 2 is a block diagram of the construction of the hierarchical analysis model of the up-down library link road.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
The invention relates to a construction method of a comparison model of a connecting road between an upper warehouse and a lower warehouse of a pumped storage power station, which comprises the following steps:
step one: based on the principle of analytic hierarchy process, selecting analysis indexes by combining the arrangement characteristics of the upper and lower banks of the pumped storage power station and connecting roads, and establishing a comparison model comprising a target layer, a criterion layer and a scheme layer on the basis of the analysis indexes, wherein the target layer is an optimal scheme of the upper and lower banks of the pumped storage power station, the criterion layer mainly considers 5 aspects of technical factors, economic factors, construction period factors, environmental factors, route arrangement, safety factors and the like, and the scheme layer consists of scheme of connecting roads to be compared;
step two, the criterion layer is further refined by combining with the current specification, the relative importance of each factor of the criterion layer is compared in pairs by adopting an improved 1-9 scale method, a judgment matrix is constructed, consistency test is carried out, and reasonable weight is determined;
step three, determining the weight of each scheme by quantitatively calculating a judgment matrix under each scheme technical factor, economic factor, construction period factor, environment factor, route arrangement and safety factor in the scheme layer;
step four, according to the order from bottom to top of the hierarchy, the weights of all schemes for decision targets are calculated and synthesized through the summarization of the weights, and the quality order of the road arrangement of the upper and lower banks of the pumped storage power station is determined through quantitative comparison of the weights; in the second step, the criterion layer is refined as follows:
a) Technical factors (A) 1 ) Is thinned into an average longitudinal slope (B) 1 ) Maximum longitudinal/length (B) 2 ) Curve of return (B) 3 ) Minimum radius of flat curve (B) 4 ) Minimum radius of vertical curve (B 5 ) And minimum slope length (B) 6 )；
b) Warp yarnFactor (A) 2 ) Finely divided into civil engineering charges (B) 7 ) And land charge (B) 8 )；
c) Construction period factor (A) 3 ) Refined to the main link construction period (B) 9 ) And the secondary connection road construction period (B 10 ) If necessary, the main connection road construction period can be further divided into the most main connection road construction period (B 9-1 ) And the second major connection road construction period (B 9-2 )；
d) Environmental factors (A) 4 ) Is subdivided into symptomatic areas (B) 11 ) Balance with earth and stone (B) 12 )；
e) Route arrangement and safety factor (A) 5 ) Is thinned into integral joint (B) 13 ) And operation and management security (B) 14 )；
The modified 1-9 scale method in step two is defined as follows:
the consistency test step in the second step is as follows:
a) Defining consistency index
Wherein lambda is max To determine the maximum eigenvalue of the matrix, m (n) is the rank of the matrix A, B, respectively.
b) Definition of the consistency ratio
If CR is less than 0.1, passing consistency test, otherwise, reconstructing a contrast matrix;
the judgment matrix and consistency test constructed according to the method and the model parameters of the invention are as follows:
from the table, the CR values of all the judgment matrixes are far smaller than 0.1, and the weight is reasonable through consistency test.
The scale value calculation method of the technical factors in the third step is as follows:
a) Defining technical factor scoring rules
b) Definition scale calculation formula
If Sigma A 1 C x -∑A 1 C y B is greater than or equal to 0 ij ＝1+α A1 [∑A 1 C x -∑A 1 C y ]
If Sigma A 1 C x -∑A 1 C y B < 0 ji ＝1+α A1 [∑A 1 C y -∑A 1 C x ]
Wherein alpha is A1 Represented at A 1 The overall scale adjustment factor under factors, Σa 1 C x 、∑A 1 C y Under the rule of a technical factor scoring rule table, the x and y major connecting roads (PR), the minor major connecting roads (SR) and the non-major roads (FR) in the scheme are respectively aimed at the index B i (i=1 to 6), wherein, [ f (x)]Represents f (x) rounded off and
b ij b ji The maximum value is 9;
the calculation formula of the scale value of the economic factor in the third step is as follows:
if A 2 C x -A 2 C y More than or equal to 0
If A 2 C x -A 2 C y < 0 then
Wherein alpha is A2 Represented at A 2 Comprehensive scale adjustment coefficient under factor A 2 C x 、A 2 C y Respectively the schemes x and y aim at the index B 7 、B 8 Of (c) wherein [ f (x)]Represents f (x) rounded off and
in addition, b when one scheme invests more than 45% higher than the other scheme ji Or b ji ＝9；
The scale value formula of the working period factors in the third step is as follows:
if A 3 C x -A 3 C y B is greater than or equal to 0 ij ＝1+α A3 (A 3 C x -A 3 C y )
If A 3 C x -A 3 C y B < 0 ji ＝1+α A3 (A 3 C y -A 3 C x )
Wherein alpha is A3 Represented at A 3 Comprehensive scale adjustment coefficient under factor A 3 C x 、A 3 C y Scheme x, y for B respectively 9 (B 9-1 、B 9-2 )、B 10 The corresponding period of the index (unit: month), in which
And b ij B ji The maximum value is 9;
the scale value calculation method of the environmental factors in the third step is as follows:
a) Defining a calculation formula for a land feature scale value in an environmental factor
If A 4 C x1 -A 4 C y1 More than or equal to 0
If A 4 C x1 -A 4 C y1 < 0 then
Wherein alpha is A4-1 Representing the symptomatic area scale adjustment coefficient, A 4 C x1 、A 4 C y1 The land areas are represented by schemes x and y, respectively, where [ f (x)]Represents f (x) rounded off and
in addition, b when one regimen is symbolically higher than the other by more than 45% ji ＝9；
b) Formula for calculating soil and stone balance scale value in definition technology factor
If it is
Then->
If it is
Then->
Wherein alpha is A4-2 Represents the soil-stone balance scale adjustment coefficient A 4 C x2-w 、A 4 C x2-T A is a 4 C y2-w 、A 4 C y2-T The digging and filling amounts of schemes x and y respectively, wherein
And b ij B ji The maximum value is 9;
the route arrangement and the calculation method of the safety factor in the third step are as follows:
a) Route defining arrangement and safety factor evaluation method
Note that: the 2,4,6 and 8 stages are respectively the median values of the two adjacent judgments.
b) Defining route arrangement and safety factor scale value calculation formula
If A 5 C x -A 5 C y B is greater than or equal to 0 ij ＝1+α A5 (A 5 C x -A 5 C y )
If A 5 C x -A 5 C y B < 0 ji ＝1+α A5 (A 5 C y -A 5 C x )
Wherein alpha is A5 Represented at A 5 Comprehensive scale adjustment coefficient under factor A 5 C x 、A 5 C y Corresponding indexes B of the schemes x and y respectively 13 、B 14 Of (2), wherein
And b ij B ji The maximum value is 9;
taking the scheme of connecting two upper and lower libraries with a highway as an example, the weights of all factors are calculated as follows:
in the fourth step, the weight summary calculation formula is as follows:
in which W is Ai Representing each influencing factor A i Weight of C Ai Representation scheme A i The sum of the comparison coefficients under each index of the factors. The quantitative comparison of the weights can be used for definitely connecting the upper warehouse and the lower warehouse of the pumped storage power station with the road clothThe order of the setting is that;
the two schemes are summarized as follows:
and (3) taking the C1 scheme as an optimal scheme for connecting roads in an upper library and a lower library through quantitative calculation of the weights.
The above-described embodiments are only for illustrating the technical spirit and features of the present invention, and it is intended to enable those skilled in the art to understand the content of the present invention and to implement it accordingly, and the scope of the present invention is not limited to the embodiments, i.e. equivalent changes or modifications to the spirit of the present invention are still within the scope of the present invention.
Claims (9)
1. The construction method of the comparison model of the connecting roads between the upper warehouse and the lower warehouse of the pumped storage power station is characterized by comprising the following steps:
firstly, selecting analysis indexes by combining the arrangement characteristics of the upper and lower banks of the pumped storage power station and connecting roads based on the principle of an analytic hierarchy process, and establishing a comparison model comprising a target layer, a criterion layer and a scheme layer based on the analysis indexes, wherein the target layer is an optimal scheme of the upper and lower banks of the pumped storage power station, the criterion layer comprises five aspects of technical factors, economic factors, construction period factors, environmental factors, route arrangement and safety factors, and the scheme layer consists of scheme of connecting roads to be compared;
step two, the criterion layer is further refined by combining with the current specification, the relative importance of each factor of the criterion layer is compared in pairs by adopting an improved 1-9 scale method, a judgment matrix is constructed, consistency test is carried out, and reasonable weight is determined;
refining the criterion layer includes:
a) Technical factor A 1 Is thinned into an average longitudinal slope B 1 Maximum longitudinal/length of slope B 2 Curve B of return 3 Minimum radius of flat curve B 4 Minimum radius of vertical curve B 5 And minimum slope length B 6 ；
b) Economic factor A 2 Finely divided into civil engineering costs B 7 And land charge B 8 ；
c) Construction period factor A 3 Refined into main connection road construction period B 9 And secondary connection road construction period B 10 The main connection road construction period is further divided into a main connection road construction period B 9-1 And the construction period B of the secondary main connection highway 9-2 ；
d) Environmental factor A 4 Is subdivided into characteristic land areas B 11 Balance B with earth and stone 12 ；
e) Route arrangement and safety factor A 5 Finer to integral joint B 13 And operation and management security B 14 ；
Step three, quantitatively calculating judgment matrixes of five factors, namely technical factors, economic factors, construction period factors, environmental factors, route arrangement and safety, of each scheme in the scheme layer;
and fourthly, according to the sequence from bottom to top of the hierarchy, synthesizing the weights of all schemes for decision targets through the summarization calculation of the weights, and quantitatively comparing and defining the good and bad sequence of the arrangement of the upper and lower banks of the pumped storage power station connected with the road.
2. The construction method of the comparison model of the up-and-down warehouse connection highway of the pumped storage power station according to claim 1, wherein the improved 1-9 scale method in the step two is defined as follows:
。
3. the construction method of the comparison model of the connection roads between the upper and lower banks of the pumped storage power station according to claim 1, wherein the consistency check in the second step is as follows:
a) Defining consistency index
Wherein lambda is max In order to judge the maximum eigenvalue of the matrix, m (n) is the rank of the matrix A, B respectively;
b) Definition of the consistency ratio
If CR < 0.1, the consistency check is passed, otherwise the contrast matrix should be reconstructed.
4. The method for constructing the comparison model of the connecting roads between the upper and lower banks of the pumped storage power station according to claim 1, wherein the method for calculating the scale value of the technical factor in the third step is as follows:
a) Defining technical factor scoring rules
b) Definition scale calculation formula
If Sigma A 1 C x -∑A 1 C y B is greater than or equal to 0 ij ＝1+α A1 [∑A 1 C x -∑A 1 C y ]
If Sigma A 1 C x -∑A 1 C y B < 0 ji ＝1+α A1 [∑A 1 C y -∑A 1 C x ]
Wherein alpha is A1 Represented at A 1 Under factors synthesisScale adjustment factor, Σa 1 C x 、∑A 1 C y Under the technical factor scoring rule, the x and y major connecting roads PR, the minor major connecting roads SR and the non-major roads FR in the scheme are respectively aimed at the index B i Wherein i=1 to 6, [ f (x)]Represents f (x) rounded off and
b ij b ji The maximum values were 9.
5. The method for constructing the comparison model of the connecting roads between the upper and lower banks of the pumped storage power station according to claim 1, wherein the scale value calculation formula of the economic factors in the third step is as follows:
if A 2 C x -A 2 C y More than or equal to 0
If A 2 C x -A 2 C y < 0 then
Wherein alpha is A2 Represented at A 2 Comprehensive scale adjustment coefficient under factor A 2 C x 、A 2 C y Respectively the schemes x and y aim at the index B 7 、B 8 Of (c) wherein [ f (x)]Represents f (x) rounded off and
in addition, b when one scheme invests more than 45% higher than the other scheme ji Or b ji ＝9。
6. The construction method of the comparison model of the up-and-down warehouse connection highways of the pumped storage power station according to claim 1, wherein the scale value formula of the working period factors in the third step is as follows:
if A 3 C x -A 3 C y B is greater than or equal to 0 ij ＝1+α A3 (A 3 C x -A 3 C y )
If A 3 C x -A 3 C y B < 0 ji ＝1+α A3 (A 3 C y -A 3 C x )
Wherein alpha is A3 Represented at A 3 Comprehensive scale adjustment coefficient under factor A 3 C x 、A 3 C y Scheme x, y for B respectively 9 、B 10 The corresponding construction period of the index, unit: month of which
And b ij B ji The maximum values were 9.
7. The method for constructing the comparison model of the connecting roads between the upper and lower banks of the pumped storage power station according to claim 1, wherein the method for calculating the scale value of the environmental factor in the third step is as follows:
a) Defining a calculation formula for a land feature scale value in an environmental factor
If A 4 C x1 -A 4 C y1 More than or equal to 0
If A 4 C x1 -A 4 C y1 < 0 then
Wherein alpha is A4-1 Representing the symptomatic area scale adjustment coefficient, A 4 C x1 、A 4 C y1 The land areas are represented by schemes x and y, respectively, where [ f (x)]Represents f (x) rounded off and
in addition, when one regimen is more than 45% higher than the other regimen，b ji ＝9；
b) Formula for calculating soil and stone balance scale value in definition technology factor
If it is
Then->
If it is
Then->
Wherein alpha is A4-2 Represents the soil-stone balance scale adjustment coefficient A 4 C x2-w 、A 4 C x2-T A is a 4 C y2-w 、A 4 C y2-T The digging and filling amounts of schemes x and y respectively, wherein
And b ij B ji The maximum values were 9.
8. The construction method of the comparison model for connecting the upper and lower banks of the pumped storage power station with the highways according to claim 1, wherein the calculation method of the route arrangement and the safety factor in the third step is as follows:
a) Route defining arrangement and safety factor evaluation method
Note that: the 2,4,6 and 8 stages are respectively the median values of two adjacent judgments;
b) Defining route arrangement and safety factor scale value calculation formula
If A 5 C x -A 5 C y B is greater than or equal to 0 ij ＝1+α A5 (A 5 C x -A 5 C y )
If A 5 C x -A 5 C y B < 0 ji ＝1+α A5 (A 5 C y -A 5 C x )
Wherein alpha is A5 Represented at A 5 Comprehensive scale adjustment coefficient under factor A 5 C x 、A 5 C y Corresponding indexes B of the schemes x and y respectively 13 、B 14 Of (2), wherein
And b ij B ji The maximum values were 9.
9. The construction method of the comparison model of the connection roads between the upper and lower banks of the pumped storage power station according to claim 1, wherein the weight summarization calculation formula in the fourth step is as follows:
in which W is Ai Representing each influencing factor A i Weight of C Ai Representation scheme A i The sum of comparison coefficients under each index of the factors; the quantitative comparison of the weights is used for determining the order of the arrangement of the upper and lower banks of the pumped storage power station connected with the road.
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