三峡船闸区地应力测量和开挖完成后动态变化

Geostatic stress measurement for TGP shiplock and its dynamic variation after excavation

为了给三峡工程设计提供可靠的第一手资料,在工程前期的地质勘测和岩石力学科研工作中,对三峡工程区域、尤其是永久船闸地区进行了大量的地应力测量与研究。在船闸区开挖完成后,对其地应力的动态变化进行了分析。叙述了永久船闸最高边坡的三闸首南北两坡的深钻孔地应力测量成果和对船闸地区地应力场剖析,以及工程开挖完成后岩体应力的动态变化。

In order to provide firsthand data for TGP design, in the pre-stage scientific research work of geostatic reconnaissance and rock mechanics, a large amount of geology stress measurement and research were carried out in TGP area, especially in the site area of the permanent shiplock. After excavation, the dynamic variation of geostatic stress in the site area of the shiplock was analyzed. The measurement results of geostatic stress in deep boring holes on the two sides of stage Ⅲ lock head and geostatic stress field as well as dynamic variation of rock mass stress after excavation are presented.