空心包体应变计在高地应力隧道原岩应力测量中的应用研究  

Application of the Hollow Inclusion Strain Gauge in the Photolyte Stress Measurement of Tunnels with High In-situ Stress

作　　者：黄德镛[1] 陈雷[1] 陈发本 

机构地区：[1]昆明理工大学国土资源与工程学院,昆明650000 [2]云南省公路科技研究院,昆明650000

出　　处：《价值工程》2016年第25期156-159,共4页Value Engineering

摘　　要：文章以云南省高黎贡山隧道为工程实际,应用空心包体应变计对高黎贡山隧道原岩应力进行测量试验。试验结果表明:应变片应变值在应力解除深度并不深时,应变值呈缓慢增加趋势;随着解除深度的不断增加,应变值迅速增大,最终趋于稳定。通过对高黎贡山隧道原岩应力测试,结果表明:在高地应力隧道中,随着深度的增大,原岩应力值也不断增大,当解除深度达到一定值时,原岩应力值将趋于稳定。结论:空心包体应变计能够较准确对高地应力隧道中对原岩应力进行测试,能够在今后类似工程中得以广泛应用。This paper taking Yunnan Gaoli Gongshan tunnel for engineering practice, applied hollow inclusion strain gauge in the photolyte stress measurement of Gaoli Gongshan tunnel. The experimental results show that when the strain gauge is not deep in the stress relief, the strain value is slowly increasing; with the increasing of the depth of the relief, the strain value increases rapidly, and finally tends to be stable; in the high ground stress tunnel, with the increase of the depth, the stress value of the original rock is also increasing, and tends to be stable when the relief depth reaches a certain value. Conclusion: the hollow inclusion strain gauge can be used to test the original rock stress in the high ground stress tunnel, which can be widely used in the similar projects in the future.

关 键 词：空心包体应变计 地应力 隧道工程 应力解除法 

分 类 号：TU459.4[建筑科学—岩土工程]