水力发电2012，Vol.38Issue(10)：21-23,3.
江坪河水电站溢洪洞洞室及出口边坡稳定性分析
Stability Analysis of Spillway Tunnel and Its Outlet Slope in Jiangpinghe Hydropower Station
党莉 1程壮 1董艳华2
作者信息
- 1. 三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌443002
- 2. 三峡大学水利与环境学院,湖北宜昌443002
- 折叠
摘要
Abstract
The structural planes of rock mass around caverns and outlet slopes in Jiangpinghe Hydropower Station are developed, and the combination of fractures with different occurrence will control the stability of caverns and slopes. Taking the No.l spillway tunnel as an example, the stabilities of tunnel and its outlet slope under different fracture combinations are analyzed by using stereographic projection and block calculation program. The results show that there are unstable surrounding rocks with smaller stability coefficient and larger volume in sp. 0+460-sp. 0+490 and sp. 0+ 500梥p. 0+550 of tunnel. It is suggested that the measures of increasing lining thickness, supporting by steel arch with a spacing of 0.5-1.0 m, and adding pre-stressed anchor cable and anchor reinforcement system are taken to improve the safety factor against sliding of sidewall for meeting the requirements of specification. The safety factors of key blocks in the outlet slope of No.l spillway tunnel are greater than the requirements of specification, and show that the outlet sloper is stable.关键词
赤平投影法/有限差分法/稳定/边坡/溢洪洞/江坪河水电站Key words
stereographic projection method/ finite difference method/ stability/ slope/ spillway tunnel/ Jiangpinghe Hydropower Station分类
建筑与水利引用本文复制引用
党莉,程壮,董艳华..江坪河水电站溢洪洞洞室及出口边坡稳定性分析[J].水力发电,2012,38(10):21-23,3.
