大茅隧道地应力测量及围岩体稳定性研究

详细信息

收稿日期: 1999-10-07

STRESS MEASUREMENTS AND STUDY OF STABILITY OF THE DAMAO TUNNEL

Received Date: 07 October 1999

摘要: 本文介绍了大茅隧道岩石三轴实验和地应力测量结果,分析了隧道围岩体应力作用特征。作用于该区的应力以水平应力为主,量值不大,最大主应力方向为NWW.这与该区主要断裂为压扭性的力学性质及震源机制解的结果是一致的。最后结合该区工程地质条件,对隧道施工安全措施及其稳定性进行了讨论。
- 隧道 /
- 地应力测量 /
- 稳定性
Abstract: The results of stress measurements carried out in the Damao tunnel in Hainan Province indicate that predominantly horizontal maximum compressive stress of no great magnitude trends NWW,which agrees with that of the major compressive faults in the area and focal mechanism solution. The results of a triaxial test of the strength of the granite into which the tunnel is excavated are also given. Finally the safety measures during excavation as well as the stability of tunnel are disscussed.
- tunnel /
- stress measurement /
- stability