Brazilian splitting test device and test method for tensile strength of surrounding rock

• Main Authors: WANG YUNZI, SUN NING, TANG GUANXIONG, YU ZHENGXING, WANG RUBIN, XU WEIYA, CHEN HONGJIE, ZHONG HUIYA, LIU YUANZE, LIU DEYU, ZHANG YONGZHI
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a surrounding rock tensile strength Brazilian splitting testing device and method, the testing device comprises a cylinder, a pressing rod penetrating through the top of the cylinder, and an upper pressing plate, a lower supporting plate and a rubber sleeve which are arranged in the cylinder, and the cylinder is provided with a confining pressure inlet and a confining pressure outlet; the pressing rod can move in the height direction of the barrel, the lower end of the pressing rod is connected with an upper pressing plate through an upper pressing head, and the upper pressing plate and the lower supporting plate are oppositely arranged. The bottom of the upper pressing plate and the top of the lower supporting plate are cambered surfaces matched with the outer diameter of a rock sample to be measured, and a splitting tool bit is arranged at the bottom of the upper pressing plate; the two ends of the rubber sleeve are connected with the upper pressing head and the lower supporting plat