华北水利水电大学学报（自然科学版）2017，Vol.38Issue(1)：47-51,5.DOI:10.3969/j.issn.1002-5634.2017.01.010
前坪水库溢洪道高边坡设计方案优化研究
Optimization of Design Scheme for High Slope of Spillway in Qianping Reservoir
摘要
Abstract
In the preliminary design of the spillway high slope of Qianping Reservoir,the slope of the excavated slope is 1:0.5 with 5 m long anchor rod,φ25 mm@2×2 m reinforced anchors.Through the system optimization study,the slope of the adjusted excavation slope is 1:0.4 with 10 m long anchor rod,φ25 mm@3×3 m reinforced anchors.The GEO-SLOPE software was used to analyze the stability of the high slope of the spillway of Qianping Reservoir under different working conditions,and the stress and deformation distribution rules of slope under different working conditions were calculated by FLAC 3D.The calculation results show that the safety factor of the high slope of the spillway in the optimized design scheme is greater than 1.3 after the excavation at the water free,normal water level and the corresponding seismic conditions,to meet the specification requirements.After the excavation according to the optimized design scheme,the maximum principal stress on the excavation surface appears tensile stress under the three conditions of water,flood and earthquakes,and the maximum tensile stress is 0.24 MPa under three conditions,which is less than that of the and esiticporphyrite.Compared with the preliminary design phase,the optimized design scheme can reduce the excavation quantity of earthwork about 50 000 m3,and has significant economic benefits.关键词
高边坡/稳定性分析/极限平衡法/FLAC3D/前坪水库Key words
high slope/analysis of stability/limit equilibrium method/FLAC 3D/Qianping Reservoir分类
建筑与水利引用本文复制引用
刘汉东,彭冰,王四巍,李梦姿..前坪水库溢洪道高边坡设计方案优化研究[J].华北水利水电大学学报（自然科学版）,2017,38(1):47-51,5.基金项目
国家水利部公益性行业科研专项(201301034). （201301034）
