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[1]PAN Mingjiu,FENG Jia,WANG Wenlong,et al.Characteristics of Soil Erosion and Comprehensive Control of Shanbei-Hubei 800 kV Transmission Line Project[J].Research of Soil and Water Conservation,2022,29(05):206-212.

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Characteristics of Soil Erosion and Comprehensive Control of Shanbei-Hubei ±800 kV Transmission Line Project

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 05 Page number: 206-212 Column: Public date: 2022-08-20

Title:: Characteristics of Soil Erosion and Comprehensive Control of Shanbei-Hubei ±800 kV Transmission Line Project

Author(s):: PAN Mingjiu¹, FENG Jia², WANG Wenlong³, GU Chenlin¹, LIU Bo¹, SHAN Jun¹, YU Zhifang¹; (1.Economic Research Institute of State Grid Zhejiang Electric Power Co., Ltd, Hangzhou 310020, China; 2.State Grid Zhejiang Power Co., Ltd, Hangzhou 310007, China; 3.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, and Ministry of Water Resources, Yangling, Shaanxi 712100, China)

Keywords:: loess hilly and gully region; hilly area; transmission line engineering; soil erosion; comprehensive management

CLC:: S157.1

DOI:: -

Abstract:: China is a mountainous country, and transmission lines, as a typical linear project with long paths and large spans, are inevitably constructed in loess hills and hilly areas where the ecological environments are fragile, which destroys the environment and exacerbates soil erosion in this area. In order to comply with the current new situation of national ecological civilization construction, we took the northern Shaanxi-Hubei ±800 kV UHV transmission line project involving the loess hilly and gully area, hilly area and plain area as an example, and monitored the water and soil through field surveys and drilling methods. Erosion, the characteristics and intensity of soil erosion and its governance system were discussed. The results show that:(1)the soil erosion of the UHV transmission line project has the characteristics of point-like linear distribution; its engineering space span is large, the erosion environment is significantly different, and the erosion types are diverse and complex;(2)the soil erosion moduli 〔12 000～25 000 t/(km²·a)〕 of the transmission line project in the loess hilly and gully area are significantly higher than those of the hilly area 〔3 600～9 500 t/(km²·a)〕 and plain area 〔950～2 000 t/(km²·a)〕. It can be seen that the loess hilly and gully area is the key soil erosion control area of the project;(3)the water and soil loss units in the station area and the tower base area have the largest amount of soil erosion caused by the point-type project and the line-type project respectively, and the soil erosion amounts are 27 267 t and 37 478 t, respectively; therefore, the station area and the tower base area should be the key water and soil erosion prevention and control units;(4)on the basis of engineering measures for water and soil erosion, the idea of close-to-nature governance should be introduced, and native grasses, shrubs, and tree species should be preferentially selected to integrate a comprehensive water and soil erosion control system for transmission lines in typical ecologically vulnerable areas. This article can provide theoretical basis and decision support for the prevention and control of soil erosion in power transmission line projects.

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Last Update: 2022-08-20