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[1]PAN Mingjiu,FENG Jia,WANG Wenlong,et al.Comparative Study on Soil and Water Loss Characteristics and Control Technology of Transmission Line Engineering in Hilly Area[J].Research of Soil and Water Conservation,2023,30(01):47-53.[doi:10.13869/j.cnki.rswc.2023.01.019]

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Comparative Study on Soil and Water Loss Characteristics and Control Technology of Transmission Line Engineering in Hilly Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 01 Page number: 47-53 Column: Public date: 2023-01-10

Title:: Comparative Study on Soil and Water Loss Characteristics and Control Technology of Transmission Line Engineering in Hilly Area

Author(s):: PAN Mingjiu¹, FENG Jia², WANG Wenlong³, GU Chenlin¹, YU Zhifang¹, MENG Huan⁵, LU Jiefeng⁴, NIE Feng⁴, CHEN Jian⁴; (1.Economic and Technical Research Institute of State Grid Zhejiang Electric Power Co.,Ltd., Hangzhou 310020, China; 2.State Grid Zhejiang Electric Power Co.,Ltd., Hangzhou 310007, China; 3.Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China; 4.China Power Engineering Consulting Group East China Electric Power Design Institute Co.,Ltd., Shanghai 200001, China; 5.Electric Power Research Institute, State Grid Gansu Electric Power Company......)

Keywords:: transmission line engineering; soil erosion; near-natural restoration; management measures; hilly area

CLC:: S157.1

DOI:: 10.13869/j.cnki.rswc.2023.01.019

Abstract:: The transmission line project in the hilly area causes a lot of soil and water loss due to the disturbance of the original landform, which directly affects the surrounding environment and resource security. To study the characteristics and control techniques of soil and water loss in transmission line engineering in a hilly area, the soil and water loss in transmission line engineering in a typical hilly area with different erosion types and the control measures of soil and water loss were analyzed through data collection and field investigation. The results show that:(1)the construction tower and construction walkway cover a complex land area; the loess hilly region has the most 5 types of land area, cultivated land and grassland are the main types, accounting for 49% and 28%, respectively; in the hilly area of red soil, the woodland is the main area, accounting for 69%; the impact of land cover in the hilly area of black soil is mainly cultivated land and woodland, which is 42% and 40%, respectively; the area of the Qinghai-Tibet Plateau is mainly affected by grassland, accounting for 78%; the mountainous area of Xinjiang is mainly bare land, accounting for 98%;(2)there are significant differences in soil and water losses in different geomorphic units of transmission line engineering; the soil and water losses in the tower area and the construction path are larger, followed by the stretch field, and the soil and water loss across the construction site is the least; the soil erosion modulus of the loess hilly area is twice that of the red soil hilly area, and five times that of the black soil low mountain and overlying hilly area; the restoration method of the tower slope should rely on the combination of natural and artificial restoration methods, attention should be paid to the drainage ditch layout of the construction road, and deep loosening and turning treatment in the process of restoration of the stretch field land should be carried out;(3)in the restoration process of erosion units formed by power transmission projects in hilly areas, related theories of restoration ecology are introduced to carry out near-natural ecosystem restoration and reconstruction for each erosion unit formed by disturbed landform; according to the characteristics of soil and water loss in each erosion unit, the combination of temporary measures, engineering measures, and plant measures is adopted. These results can provide a scientific basis for soil erosion prevention and treatment of transmission lines in hilly areas.

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Last Update: 2023-01-10