长江科学院院报2012，Vol.29Issue(2)：24-29,6.
地下厂房顶拱塌方加固处理及施工过程稳定性分析
Consolidation Treatment of the Collapsed Top Arch of Underground Powerhouse and Stability Analysis on the Construction Process
摘要
Abstract
Based on geological investigation, a numerical calculation model was established by FLAC3D to simulate the collapse and supporting consolidation during the first-stage excavation of underground powerhouse of the Dagan-gshan hydropower station. The consolidation effect and the influence of subsequent excavation after collapse on the stability of collapsed area were studied. The results showed that apart from larger deformation in the crushed stone zone, the deformation increase in other crucial locations was within 3mm after the top arch was reinforced by cable and steel arch. The results indicated that the consolidation effect was quite good; and as the powerhouse was excavated, the rockmass stress around collapse zone tended to be even due to the stress adjustment and the interaction among cable, arch and surrounding rock; the tensile stress of collapse zone rock almost disappeared; the anchor force increased and extended deeper gradually, indicating that the anchor worked effectively.关键词
地下厂房/塌方/支护/稳定性分析Key words
underground powerhouse/ collapse/ supporting/ stability analysis分类
天文与地球科学引用本文复制引用
杨继华,肖培伟,朱泽奇,王帅..地下厂房顶拱塌方加固处理及施工过程稳定性分析[J].长江科学院院报,2012,29(2):24-29,6.基金项目
国家自然科学基金重大研究计划资助项目(90715042) （90715042）
