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在隧道施工过程中,不良地质段一经开挖,潜在应力迅速释放,围岩失稳变形,对隧道施工产生严重的影响。一般岩石地下工程在选址与定点方面,应设法避开不良地层。但是这并不排除在个别地段或洞室的某些部位,仍然有可能会遇到不良地质和一些不利于施工的特殊地质地段。隧道地质超前预报在隧道施工中,尤其是在遇到不良地质情况时,为保证隧道的安全推进起着决定性的作用。
During tunnel construction, excavation of unfriendly geological sections and rapid release of potential stresses will destabilize the surrounding rock and seriously affect tunnel construction. General rock underground engineering site selection and fixed point, should try to avoid the bad strata. However, this does not exclude that in some areas or some parts of the caverns, it is still possible to encounter adverse geological conditions and some special geological sections that are not conducive to construction. Tunnel geological advance forecast In the tunnel construction, especially in the case of adverse geological conditions, in order to ensure the safety of the tunnel to play a decisive role.