Research on the Method of Measuring and Calculating the Cost of

Temporary Protection Engineering Measures for Water and Soil

Conservation in Substation

Xiaoyong Yang, Fuyan Liu, Min Yu and Xiaoyan Yu

Economic and Technological Research Institute, State Grid Zhejiang Power Co., Ltd., Hangzhou, 310000, China

Keywords: Substation Engineering, Soil and Water Conservation Measures, Temporary Protection Engineering, Cost

Estimation.

Abstract: With the increase of relevant national standards and the public's awareness of environmental protection and

environmental protection, more and more attention has been paid to water and soil conservation in substation

projects. The investment in water and soil conservation measures has become one of the necessary

components of the cost of substation projects. However, the current scientific calculation of the cost of water

and soil conservation measures for substation projects lacks corresponding standards, which is not conducive

to project cost control and investment benefits. Therefore, this paper takes the soil and water conservation

measures of the temporary protection project of substation as an example. Based on the analysis of the current

situation of the measure plan, firstly, the main factors affecting the investment of the temporary protection

project of the substation are analyzed systematically; then the measures based on the linear regression analysis

are constructed. Cost calculation model; finally, combined with empirical analysis, the validity of the model

is verified.

1 INTRODUCTION

In the construction activities of substation projects, it

is inevitable to occupy land and repair roads, which

destroys the ground vegetation and stable terrain, and

causes soil erosion problems. In order to solve the

problem of water and soil erosion in the project,

power grid companies need to implement

corresponding water and soil conservation treatment

plans during the construction of the project to ensure

that the problem of water and soil erosion in the

project is always controllable and under control.

Literature (Wang, Cai, Lei, Wang, 2021) takes the

Xichuan Interchange (North) Link Road Project of

Mianchi-Xichuan Expressway as an example to

analyze the application and effectiveness of soil and

water conservation measures in highway

construction. Reference (Huang, Ou, Ye, 2021)

combined with the current development of water and

soil conservation work in power transmission and

transformation projects, sorted out the problems in

the calculation of related costs, studied and put

forward suggestions on the development of water and

soil conservation and cost management, which can

improve the quality and efficiency of water and soil

conservation. Literature (He 2021) combined with the

characteristics of the plateau transmission line project

construction, and based on the analysis of the relevant

policy requirements for water and soil conservation,

formulated corresponding water and soil

conservation measures to support the development of

the project's environmental protection work.

Reference (Guo, Hu, 2021) combined with

engineering construction examples, according to the

actual situation of the project area and the

characteristics of the project construction, divided the

500kV power grid improvement project prevention

zone in the northwest of Shanxi Province, analyzed

the characteristics of soil erosion that may be caused

during the construction process, and proposed

different prevention zones. The prevention and

control measures of soil and water conservation have

been implemented. In reference to the characteristics

of power transmission and transformation projects

and the hydrological and soil characteristics of the

project area, the literature (He 2021) carried out soil

erosion calculation and analysis based on related

technical measures of water and soil conservation,

and finally proposed the overall layout of water and

soil conservation measures to achieve prevention and

156

Yang, X., Liu, F., Yu, M. and Yu, X.

Research on the Method of Measuring and Calculating the Cost of Temporary Protection Engineering Measures for Water and Soil Conservation in Substation.

DOI: 10.5220/0011167300003440

In Proceedings of the International Conference on Big Data Economy and Digital Management (BDEDM 2022), pages 156-160

ISBN: 978-989-758-593-7

treatment of such projects. The goal of soil erosion

within the scope of responsibility.

In summary, relevant scholars are currently

paying great attention to the development of water

and soil conservation in engineering construction and

have conducted a lot of research on this. However,

scholars focus more on the formulation of

engineering water and soil conservation measures,

and the related research on the cost of engineering

water and soil conservation measures is relatively

weak.

2 CURRENT STATUS OF SOIL

AND WATER CONSERVATION

MEASURES FOR TEMPORARY

PROTECTION WORKS IN

SUBSTATIONS

2.1 Analysis of Water and Soil Erosion

Links in Substation Engineering

When the terrain of the substation is a hillside, after

the project enters the site and clears the table, the

slope shall be cut, that is, the hill excavation shall be

carried out. Subsequent foundation excavation; when

the terrain of the substation is on a plain, the

foundation excavation will be carried out directly

after the surface is cleared. Regardless of the

situation, the original landform is subject to manual

labor and drastic changes occur during the project.

The vegetation on the ground is cleared, and

colleagues excavate the earth and rock, resulting in a

large amount of spoil.

The site is leveled before the foundation

excavation, and the earthwork requires a lot of

excavation, which usually accounts for more than

half of the total excavation volume of the substation

project. Part of it is backfilled, and the rest is used in

projects such as roads outside the station. During the

site leveling process, the soil loosens, and before the

ground hardens, it is most likely to cause soil erosion.

In the construction process of the main building,

the project that affects soil and water conservation is

the construction land, which mainly includes the

storage of temporary materials and waste, and the

land occupation of equipment, but the area is small

and only affects a small amount of land outside the

station.

The road engineering and underground trench

pipeline engineering in the station require a certain

degree of excavation and filling. The road in the

station first needs to level the land, and during the

paving process, materials are transported in. The

amount of excavation for cable trenches and water

pipelines is relatively large.

2.2 Analysis of the Content of

Temporary Protection Engineering

Measures for Water and Soil

Conservation in Substations

1) Topsoil stripping and temporary storage

protection

According to the actual situation of the surface

soil of the station area, it shall be stripped and stored

in a centralized manner. The pile shall be stored in the

station area as much as possible, and no new

temporary land occupation shall be added. Since the

storage time of surface soil is relatively long,

generally during the entire construction period of the

substation, the surface soil storage yard should be

provided with temporary blocking, cover, drainage,

and sand settlement measures. Blocks generally use

soil-filled woven bags, color steel plates, etc.; thatch

covers generally use dust-proof nets, geotextiles, etc.;

temporary drainage is recommended for drainage

ditches, generally earth (stone) ditching; sand

settlement measures generally refer to construction of

temporary sedimentation Pool.

2) Temporary protection of backfill soil storage

Pipeline construction for water supply, drainage,

heating, communication, and cable trenches outside

the station is generally excavated in sections, and

filled with excavation. The excavated earth is

generally piled along the line. The storage period and

amount of soil are relatively small. Therefore, for this

part Temporary piles of soil mainly take temporary

blocking and covering measures. The earthwork used

for backfilling the foundation of buildings or

equipment and elevating the site shall be stored in a

centralized manner, and measures shall be taken to

temporarily block, cover, drain and settle the sand.

3)Temporary drainage and sedimentation of the

construction site

The construction site is generally not hardened

and uneven, and it is prone to hydraulic erosion

during the construction process. Therefore, after the

site is leveled, a temporary drainage ditch needs to be

dug for drainage during the construction period. The

wiring is consistent with the drainage measures in the

permanent station. The temporary drainage ditch can

be soil or brickwork. The structure has a temporary

sand basin at the end, and the flood control design

standard is determined according to the construction

period.

Research on the Method of Measuring and Calculating the Cost of Temporary Protection Engineering Measures for Water and Soil

Conservation in Substation

157

4) Dust reduction on the construction site

In addition, during the construction process, water

should be sprayed regularly to reduce dust and

prevent wind erosion.

Table 1: Statistical table of temporary protection

engineering measures for substations.

Serial

number

Type of measure Measure content

Filling woven

bags

Stripped topsoil and

earthwork excavated

during construction,

Temporary blocking and

covering during

temporary stacking

Geotextile

covering

Temporary

drainage ditch

Mainly soil quality to

meet the flow capacity

3 RESEARCH ON THE

CALCULATION MODEL OF

SOIL AND WATER

CONSERVATION MEASURES

BASED ON ONE-VARIABLE

LINEAR REGRESSION

ANALYSIS

3.1 Basic Theory of Regression

Analysis Model

Regression Analysis refers to the use of statistical

data to analyze the quantitative changes of various

variables, and to reflect and describe this relationship

in the form of regression equations. Regression

analysis is divided into linear regression and

nonlinear regression. This section only introduces the

commonly used linear regression analysis. If there is

only one independent variable involved in the

regression analysis, it is a one-variable linear

regression analysis, and the result obtained is a linear

regression equation. The mathematical model of

unary linear regression is:

baxy +=

(1)

3.2 Regression Coefficient

The

in formula (1) is the regression coefficient,

because the regression coefficient is the partial

derivative of

with respect to

, so it is also

called the partial regression coefficient.

The regression coefficient is a parameter that

measures the degree of influence of the independent

variable on the dependent variable. The larger the

regression coefficient, the greater the degree of

influence of the independent variable on the

dependent variable. The positive and negative of the

regression coefficient and the positive and negative

meaning of the correlation coefficient are the same.

The positive regression coefficient means that

increases with the increase of

, and the negative

regression coefficient means that y decreases with the

increase of

. According to the sample data, the

least square method is used to find the optimal

function by minimizing the sum of squares of the

error, and the regression coefficient is obtained.

3.3 Research Steps

The steps to perform regression analysis on the

factors affecting the cost of power transmission and

transformation projects are as follows:

1) Determine the independent variable

in the

regression equation, which is the influencing factor.

The dependent variable

is the cost level. Collect

sample data.

2) Estimate each parameter in the model under

certain statistical fitting criteria, and get the

regression equation.

3) Test the regression coefficients. Analyze the

results.

The SPSS software can be used for linear

regression analysis. Select the "Analysis"-

"Regression"-"Linear" command. Input the

independent variable and the dependent variable to

get the regression coefficient table. The non-standard

coefficients, standard coefficients, T statistics,

significance, and 95% confidence intervals of non-

standard coefficients are given in the table. Generally,

significance is less than 0.3, and

can be regarded

as having a significant effect on

3.4 Regression Model Construction

This paper selects 10 data samples of ZJ provincial

power company, and constructs the model based on

the actual cost of the project. The basic data of the

sample is shown in the following table 2:

BDEDM 2022 - The International Conference on Big Data Economy and Digital Management

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Table 2: Sample basic data sheet.

project name

Filling woven bag Temporary water distribution ditch Geotextile covering

Dosage (m

) Cost (Yuan) Length (m) Cost (Yuan) Dosage (m

) Cost (Yuan)

project 1 300 32900 130 3050 120 1060

project 2 260 30600 150 3650 220 1562

project 3 250 31080 125 2825 350 2953

project 4 420 50060 260 6310 160 1080

project 5 120 10200 60 1300 180 1342

project 6 300 35120 180 5525 240 1849

project 7 200 26086 100 2600 450 3451

project 8 150 20950 86 1850 165 1285

project 9 280 36570 220 5200 145 1360

project 10 330 40240 315 8075 190 1420

Combining the basic principles of the model, the

construction of a one-element linear regression model

of water and soil conservation measures for

substation engineering is shown in the following

table:

Table 3: Cost calculation model for water and soil conservation measures.

Serial

number

Measure name Cost estimation model

1 Filling woven bags

2566.525.120 −= xy

2 Temporary water distribution ditch

53.215163.26 −= xy

3 Geotextile covering

014.57981.7 += xy

4 EMPIRICAL ANALYSIS

This paper takes a 500kV substation project in ZJ

Province as an example to conduct an empirical

analysis. Through the analysis of water and soil loss

during the construction of substations and line

projects, combined with the topography of the project

area, the investment in water and soil conservation of

the temporary protection project and the model

prediction are shown in the following table 4:

Table 4: Water and soil conservation investment estimates for temporary protection works of the project.

Serial number Project cost name Unit Quantity Cost (Yuan)

Model prediction

cost

(Yuan)

Model calculation

deviation rate

(Absolute value, %)

Filling woven bags

3 255 3060

30658.49 0.19%

Temporary water

distribution ditch

m 130 3250 3185.66 1.98%

Geotextile covering

2 175

1400

13651.689 2.49%

Total measure cost - - 4785

47495.839 0.74%

It can be seen from the above table that the

calculation deviation of the model is within 3%,

indicating that the calculation accuracy of the model

is high, and it can guide the reasonable cost control of

the environmental protection measures of the

substation project.

Research on the Method of Measuring and Calculating the Cost of Temporary Protection Engineering Measures for Water and Soil

Conservation in Substation

159

5 CONCLUSION

Based on the current situation of temporary

engineering measures for soil and water conservation

in substation engineering, this paper constructs a

measure cost measurement method based on linear

regression analysis, and analyzes the effectiveness of

the model in combination with actual engineering

cases. This method and model can provide support for

the reasonable calculation of the cost of water and soil

conservation measures for power grid companies and

the improvement of the level of project cost control.

ACKNOWLEDGMENTS

This study is supported by the Science and

technology project of State Grid Zhejiang Electric

Power Co., Ltd (B311JY21000C).

REFERENCES

Guo Xing, Hu Zhiyuan. Research on the configuration of

water and soil conservation measures system for power

transmission and transformation projects[J]. Shanxi

Electric Power, 2021(04): 54-58.

He Guangqing. Analysis of soil erosion and water and soil

conservation measures of power transmission and

transformation projects in production and construction

projects[J]. Housing and Real Estate, 2021(24): 195-

196.

He Lefeng. Research on environmental protection and

water and soil conservation measures for plateau

transmission line projects [J]. Water Conservancy and

Hydropower Technology (Chinese and English), 2021,

52(S2): 154-156. DOI: 10.13928/j.cnki.wrahe.

2021.S2.040.

Huang Fenghui, Ou Wenqi, Ye Minquan. Exploration of

lean management of water and soil conservation in

power transmission and transformation projects[J].

China Electric Power Enterprise Management,

2021(27): 27-29.

Wang Baoding, Cai Xunxing, Lei Mingqin, Wang Qin. Soil

and water conservation measures and benefit analysis

of a highway project[J]. Henan Water Conservancy and

South-to-North Water Diversion, 2021, 50(09): 99-100.

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