摘要
通过钻孔内的水压致裂方法直接测量原地应力,获得隧道区地应力的各种力学参数,根据各种地应力测量结果进行综合研究对比,提出深埋隧道围岩的稳定性程度,并判断和推测隧道施工期间发生岩爆的可能性,为隧道设计提供重要依据,方法直观,效果良好。
The different mechanics parameters of geostatic stress in the tunnel area can be obtained by the direct measurement of the in-situ stress in the drill holes using by the hydrofracturing method.Based on the results of geostress survey and synthetic study,it presents the stability degree of country rocks around the deep tunnel,tells and pre-estimates the possibility of breaking out a rock outburst during the tunnel construction,which can provide an important reference for the tunnel design.The technique has an obvious feature of a direct-viewing operation and better effects.
出处
《福建地质》
2007年第3期179-184,共6页
Geology of Fujian
关键词
水压致裂
地应力
隧道工程
应用
hydraulic cracking,geostatic stress,tunnel construction,application
