2 results about "Rheometer" patented technology

The invention relates to a creepage experiment system automatically controlling times of disturbance. The system comprises a rheometer bracket, wherein the middle upper part of the left end of a vertical part of the rheometer bracket is connected with fixed ends of a pressure rod and a turn-back lever; the turn-back lever is located at the lower end of the pressure rod; a disturbance loading system is arranged at the top of the pressure rod; a support point is arranged between the bottom end of the pressure rod and the turn-back lever; a triaxial pressure chamber is arranged at the bottom endof the pressure sensor and arranged at the top of a horizontal part of the rheometer bracket; and a free end of the pressure rod is connected with a scale pan through a connecting rod. According to the creepage experiment system, the disturbance time can be precisely controlled by a time relay in an experimental process; the disturbance loading system can automatically apply a disturbance load; and the experimental precision is greatly improved.

The invention discloses a testing method for determining a stress and damage mechanism of a columnar jointed rock mass. The testing method comprises the following steps: 1) preparing cement mortar according to mechanical characteristics of an actual rock mass to prepare a regular hexagonal prism-shaped test sample; 2) splicing the regular hexagonal prism-shaped test samples to form a cuboid-shaped columnar jointed rock mass test sample model; curing, cutting and polishing to prepare cube-shaped columnar jointed rock mass test pieces with different inclined angles; 3) putting the columnar jointed rock mass test pieces into a rock rheometer; fixing the rock rheometer in the horizontal direction and slowly applying axial pressure until the test pieces are damaged; recording stress and strain data in a testing process; 4) processing recorded testing data to obtain a stress-strain relation of the columnar jointed rock mass, wherein the stress-strain relation reflects the stress and damage mechanism of the rock mass. According to the testing method disclosed by the invention, stress and damage conditions of the columnar jointed rock mass are demonstrated by a model testing method; the testing method has the advantages of low construction price, high simulation degree, simplicity in operation and the like.