Chinese Academy of Sciences

Institute of Geology and Geophysics, Cas

Institute of Geology and Geophysics

Yunnan Dianzhong Water Diversion Engineering Co.

Shuaihua Song

Yu Zou

Shengwen Qi

Bowen Zheng

Songfeng Guo

Ning Liang

Xin Wang

Xiaolin Huang

Lei Xue

Yongchao Li

Xiaokun Hou

Tianming Huang

Zhendong Cui

Lina Ma

Libo Jiang

Qingze Hao

Tao Wang

Jing Min Xu

Guoliang Li

Zhaobin Zhang

Guangming Luo

Haijun Zhao

Xueliang Wang

Liheng Wang

Chao Jin

Zan Wang

Yanhui Dong

Yanlong Kong

Weiwei Zhu

Jianing Cong

Yanjun Shang

Fengjiao Tang

Jinxuan Li

Yuran Zhang

Wenjiao Xiao

Yidong Xiao

Guiyang Ren

Shufang Li

Ming Cai

Feng Xiong

Yiman Li

A sample mounting device for direct tensile test of rock mass is provided, which includes a first positioning stage, a second positioning stage, a first support piece, a second support piece, and a screw drive mechanism. The second positioning stage is arranged above the first positioning stage and capable of moving up and down, and cushion blocks for gluing with the rock mass are coaxially and detachably arranged at opposite ends of the first positioning stage and the second positioning stage, and a rock mass mounting area is formed between the two cushion blocks. A screw of the screw drive mechanism includes a first thread segment and a second thread segment with opposite thread directions. The first support piece is connected with the first thread segment through a nut seat, and the second support piece is connected with the second thread segment through a nut seat.

Sample mounting device for a direct tensile test of rock mass

A clamp and a shear test device are provided, and relate to the technical field of rock mass mechanics tests. The clamp comprises a box body, wherein an opening is formed in one side of the box body, two clamping structures are oppositely arranged in the box body, a sample is arranged between the two clamping structures, each clamping structure comprises an adjusting mechanism, and a distance between the two clamping structures is adjusted through adjusting mechanisms of the two clamping structures. According to the clamp, real-time dynamic adjustment is conveniently and rapidly achieved, the stability of sample clamping is ensured, and therefore the requirement that the shear load can be truly and effectively transmitted to the sample through the box body is met.

Clamp and shear test device

A variable angle loading testing machine is provided, which may include a bottom plate and a base fixedly connected to the bottom plate. A rock-sample accommodating cavity is formed in the base, and a rectangle-shaped sample is suitable for being placed into the rock-sample accommodating cavity. A side of the base is fixedly connected to two arc-shaped tension beams arranged in parallel, and a variable angle loading mechanism is slidably connected between the two arc-shaped tension beams. Through-holes are formed on the base, and an output end of the variable angle loading mechanism abuts against the rectangle-shaped sample through one of the through-holes. Loading and unloading of a stress with variable direction and magnitude under excavation disturbance can be simulated, which is of great significance for understanding mechanical behaviors of rock-soil mass under excavation disturbance.

Variable angle loading testing machine

Growing community of inventors

Beijing, China

Shuaihua Song