公开(公告)号：US20210223151A1

公开(公告)日：2021-07-22

申请号：US17059169

申请日：2019-12-20

Applicant: Northeastern University

Inventor： Xiating FENG ,  Mian TIAN ,  Fengpeng ZHANG ,  Jun TIAN ,  Chengxiang YANG ,  Jianyu PENG ,  Yuemao ZHAO ,  Jikai GAO ,  Jianqing JIANG

IPC: G01N3/12 ,  G01N3/36

Abstract: A true triaxial testing system for disturbance experiment with broadband and low amplitude of a high pressure hard rock includes a low-frequency disturbance true triaxial mechanism, a variable-frequency low-speed disturbance rod mechanism and a rapid single-side unloading type specimen box. The low-frequency disturbance true triaxial mechanism and the variable-frequency low-speed disturbance rod mechanism are distributed along a straight line. The low-frequency disturbance true triaxial mechanism is independently used or cooperates with the variable-frequency low-speed disturbance rod mechanism for use. The rapid single-side unloading type specimen box cooperates with the low-frequency disturbance true triaxial mechanism for use.