Secondary stress after excavation could result in deformation of the surrounding rock at Jinping hydropower plant because of deep embedment of the aqueduct tunnel and low compression strength of rock. 金坪引水隧洞埋深较大,部分洞段岩体强度较低,洞室开挖后由于二次应力的作用围岩有可能产生变形,因此合理的评价隧洞围岩变形稳定性问题具有重要的工程意义。
Stability evaluation of the deformed surrounding rock in the aqueduct tunnel at Jinping Hydropower Plant 金坪引水隧洞围岩变形稳定性评价