Xian Zealchon Electronic Technology Co., Ltd.
Xian Zealchon Electronic Technology Co., Ltd.
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C142 Rock triaxial compression testing machine
The method of determining the strength and deformation of the specimen under triaxial axial pressure in the triaxial compressive strength test of rock. Calculate the strength and deformation parameters of the specimen under triaxial compression. It can also determine the compressive shear strength and Poisson's ratio of rock. Normally, a triaxial compressive strength test with unconsolidated drainage under lateral pressure and without measuring pore water pressure is used.
Experimental process: First, put the prepared rock test piece on the oil-proof latex sleeve and place it in the triaxial pressure chamber, center the rock sample pressure block and the ball seat, and then place the triaxial pressure chamber on the pressure testing machine. The pressure chamber is aligned with the pressure plate. Start-up, synchronously apply lateral pressure (confining pressure) and axial pressure to the preset lateral pressure value at a loading rate of 0.05mm/min, and keep the side wall pressure unchanged, and then at a loading rate of 0.5MPa~6MPa per second Load the axial pressure until the specimen is broken, and record the axial load and deformation values during the test.
Main components: hydraulic axial pressure loading device, triaxial pressure chamber with high pressure resistance of 90MPa, confining pressure loading device, computer acquisition control instrument and analysis system.
| Type | Name | parameter | |
| 1 | Ultimate test force | 300kN 1000kN | |
| Accuracy level | Level 1 | ||
| 2 | Load parameters | Test force measurement range | 0.4%~....FS(Full scale) |
| Test force indication error | Within ± 0.5% of the indicated value | ||
| Test force resolution | ± 1/300000 of the high test force, without any gear division throughout the entire process, and with the same resolution throughout the entire process | ||
| 3 | Displacement parameters | Displacement indication error | Within ± 0.2% of the indicated value |
| Displacement resolution | 0.015μm | ||
| 4 | Control parameters | Force control rate adjustment range | 0.005~5%FS/s |
| Force control rate control accuracy | When the speed is less than 0.05% FS/s, it is within ± 2% of the set value, and when the speed is ≥ 0.05% FS/s, it is within ± 0.5% of the set value; | ||
| constant force | 0.5%~....FS | ||
| When the set value is ≥ 10% FS, it is within ± 0.5% of the set value; when the set value is<10% FS, it is within ± 1% of the set value | |||
| 5 | Test fixture (optional) | Rock splitting fixture | φ25*100mm φ50*100mm φ100*100mm |
| Rock variable angle shear fixture | φ50*50mm 50*50mm φ570*50mm 70*70mm α Angle selection 30 ° 38 ° 45 ° 50 ° 55 ° 60 ° 65 ° | ||
| Rock bending tensile strength fixture | Three fulcrum fixture:50×50×250mm | ||
| 6 | Compression test parameters | Square and cylindrical specimens | Φ100×100mm |
| Φ25×50mm Φ50×100mm | |||
| 7 | Triaxial pressure chamber | Select according to sample specifications | Thick walled seamless steel material, capable of withstanding high pressure of 80MOa |