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[1]CHENG Shengdong,HANG Penglei,LI Peng,et al.Effects of Terracing on the Slope Stability in the Rocky Mountain Area of Southern Shaanxi Province[J].Research of Soil and Water Conservation,2018,25(05):157-161.

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Effects of Terracing on the Slope Stability in the Rocky Mountain Area of Southern Shaanxi Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 05 Page number: 157-161 Column: Public date: 2018-09-06

Title:: Effects of Terracing on the Slope Stability in the Rocky Mountain Area of Southern Shaanxi Province

Author(s):: CHENG Shengdong, HANG Penglei, LI Peng, CHENG Yuting, GUO Mengjing; State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi’an University of Technology, Xi’an 710048, China

Keywords:: rocky mountain area; soil and water conservation; terrace; stability; layout of terraced section

CLC:: S157.3⁺1

DOI:: -

Abstract:: Terrace was one of the main measures to control soil loss in the rocky mountain area of southern Shaanxi Province. The objective of this study was to examine the effects of terracing on slope stability, and it is very important to terrace collapse and to control soil loss. Based on the filed survey sampling, laboratory experiments and combined with model calculations, we analyzed the influence of the slope stability after terracing, and discussed the effects of soil thickness, ridge slope and the width of filed surface on the slope stability. Results show that the slope safety factor would decrease by 45% on the slope 15° and by 73% on the slope 25° after the construction of terraces. The stability of terracing on the 15° slope is better than the 25° slope. Under the same slope length and gradient, the safety factor is directly proportional with soil thickness and inversely proportional with the ridge slope and width of the field surface. These results can provide scientific basis for the layout of terraced section in the rocky mountain area of southern Shaanxi Province.

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