The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2022
Filed:
Sep. 26, 2019
Northeastern University, Shenyang, CN;
Xiating Feng, Shenyang, CN;
Jun Zhao, Shenyang, CN;
Jun Tian, Shenyang, CN;
Chengxiang Yang, Shenyang, CN;
NORTHEASTERN UNIVERSITY, Shenyang, CN;
Abstract
The invention provides a multi-functional true triaxial shear test device and method for hard rocks, the device comprises a hydraulic system, a left-end combination tangential loading oil cylinder, a right-end combination tangential loading oil cylinder, a front-end combination lateral loading oil cylinder, a rear-end combination lateral loading oil cylinder, an upper normal loading oil cylinder, a lower normal loading oil cylinder, an annular framework, a lateral auxiliary push-and-pull framework, an annular framework support platform, a horizontal support platform and a test chamber. The stiffness of the device is improved, and besides, a total section stress covering loading manner of the rock samples in a shear process is guaranteed. Through improving a temperature reduction manner of front ends of the oil cylinders, the situation that high temperature does not enable the temperature of hydraulic oil in the oil cylinders to rise to affect normal motion of the actuator can be guaranteed.