紫坪铺泄洪洞穿越断层段新奥法设计与数值仿真分析

NATM Design and Numerical Emulation Analysis for the Section passing through a Fault in Zipingpu Sluiceway Project

本文基于新奥法的基本原理 ,对紫坪铺水利工程 1 # 泄洪洞穿越 F3断层段的支护设计方案进行了有限元数值仿真分析和优化设计。分析结果表明 ,按照常规的支护不能保证围岩、支护的稳定。本文经过 4个支护方案的设计与仿真分析 ,提出了较为理想的支护方案 ;该支护方案已为工程实际所采用 ,取得了良好的实际效果。

Based on basic principles of NATM,a finite element numerical emulation analysis and optimized design on supporting in section through F3 Fault of Zipingpu sluiceway No.l project were carried out. Results of anlysis show that the ordinary supporting can’t ensure the stability of surrounding rock and support. Based on design and emulation analysis of 4 versions for supporting, an ideal version of support has been suggested. It has been applied in practice and good results have been gained.