Test methods for acquiring thick wall cylinder sample ring fracture

• Main Authors: ZHANG HOUQUAN, HAN LIJUN, LIU HONGGANG, HE YONGNIAN
• Format: Patent
• Language: Chinese; English
• Published: 19.08.2009
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a test method for obtaining ring fracture of a cylinder sample with thick wall. The method comprises the following steps: firstly, sampling is carried out to testing rock mass objects; the rock mass which is obtained by sampling is made into the cylinder sample with thick wall; a certain axle load is applied to the cylinder sample with thick wall so as to lead the sample and an upper rigid loading end part and a lower rigid loading end part to contact closely; oil is filled into inner holes of the cylinder sample with thick wall, and into gaps between the cylinder sample and a load chamber; three axles of inner pressure, confining pressure and axle pressure of the cylinder sample with thick wall are loaded to a designed pressure value so as to lead the top, the bottom, the inner hole wall and the outer wall of the cylinder sample with thick wall are respectively in pressure state; the axial loading of three-directional loading is kept to be constant; and unloading is carried out to th