摘要
采用三维数值模拟方法,对张石高速黑石岭分离式隧道施工过程中的软破围岩支护方案进行了优化分析研究,通过研究认为,采用优化支护方案后,隧道净空收敛值减少了60%,锚杆的数量减少且更加充分地发挥了锚杆的作用,围岩塑性区范围明显减小,增强了掌子面围岩的稳定性。
The paper adopts the three-dimensional numerical simulation method and has a research on the optimized analysis of the supporting scheme for the soft-fracture surrounding rock in the construction process for the Heishiling separated tunnel on the Zhang-Shi highway. It is considered that the clearance convergence value in the tunnel reduced 60 %, the number of bolts reduced and their roles were well exerted, and the plastic zone also decreased, while the stability of the tunnel face was increased, after the optimized supporting scheme was adopted.
出处
《山西建筑》
2009年第7期321-323,共3页
Shanxi Architecture
关键词
隧道
软破围岩
支护
优化方案
tunnel, soft-fracture surrounding rock, supporting, optimized scheme
