Overview

The document details various specialized rock and soil testing machines designed for mechanical property analysis under different environmental and loading conditions. These machines simulate in-situ stress states and perform tests such as uniaxial compression, triaxial compression, creep, shear, and hydraulic fracturing under controlled temperature and pressure environments. The equipment is essential for engineering design, scientific research, and industrial applications.

Reference Standards

• GB/T 50123-1999 Soil Test Method Standard
• GB/T 50266-99 Engineering Rock Mass Test Method Standard
• SL 264-2001 Water Conservancy and Hydropower Project Rock Test Code
• SL-237-1999 Soil Test Code
• GB 20688 series for Rubber Bearings Testing

Rock Triaxial Testing Machines (ZYSS Series)

These mechatronics-hydraulic integrated machines simulate rock and soil mechanical behavior under original in-situ stress states. They support uniaxial compression, axial compression under confining pressure, creep tests, and high-temperature tests.

Key Specifications

• Sample sizes range from φ50×100 mm to φ300×750 mm depending on model.
• Maximum axial loads vary from 5 kN to 2000 kN.
• Confining pressure up to 60 MPa.
• Temperature environment ranges from room temperature up to 200°C for some models.
• Axial and radial extensometers can be installed inside the confining pressure chamber.
• Hydraulic fracturing tests are supported.

Product Features

• High rigidity loading frame with bottom cylinder placement.
• Heating elements with fast insulation for temperature control.
• Servo motor-driven screw mechanism for precise oil/water pressure control.
• Multiple cable outlet channels for extensometer installation.

True Triaxial Test Systems (ZSZ Series)

These systems perform static triaxial loading tests including compression, tensile, instantaneous unloading, rheological, low-frequency disturbance, and hydraulic fracturing tests under various temperature conditions (-60°C to 200°C).

Key Parameters

• Loading forces up to 500 kN.
• Displacement measurement accuracy ≤ ±1%.
• Sample sizes from 40×40×80 mm up to 100×100×150 mm.
• Instantaneous unloading stroke of 20 mm with temperature accuracy ±2°C.

Geotechnical Plane Similarity Simulation System

This system includes a model test base, servo loading control, and data acquisition for complex geotechnical research such as tunnels, underground powerhouses, and large-scale underground spaces.

Features

• Multi-cylinder or multi-head even loading for uniform stress application.
• PTFE anti-friction plates reduce friction and improve test accuracy.
• Detachable windows and drying holes facilitate sample preparation and excavation.
• Software modules provide digital display, data conversion, and report generation.

Rock Biaxial Creep Instrument

Designed for creep, shear, and stress relaxation tests under biaxial compression, this instrument measures biaxial and bilateral deformation and controls force or deformation precisely.

Rubber Bearing Compression Shear Testing Machines

Used for testing various rubber bearings including basin rubber bearings, spherical steel bearings, and building vibration isolation bearings. Tests include compression resistance, shear modulus, bonding performance, aging, friction coefficient, and dynamic properties.

Specifications

• Vertical maximum load up to 10,000 kN.
• Vertical and horizontal loading accuracy ≤ ±1%.
• Horizontal displacement stroke up to ±800 mm.
• Loading modes include single and multi-cylinder configurations.

Design Features

• High rigidity load frame with full-stroke guiding structure.
• Direct drive valve and measurement control system for stable control.
• Rolling guide rail blocks with quenched bearing steel plates for wear resistance.

Rock Shear Testing Machines

These machines perform shear (fracture) tests on sand, rock, concrete, and rock mass weak structural surfaces. They measure vertical and horizontal load-deformation relationships and support multi-stage loading with automatic control functions.

Key Parameters

• Vertical max load up to 1500 kN.
• Horizontal max load up to 3000 kN.
• Displacement accuracy ≤ ±1% F·S.
• Sample sizes from 100 mm to 1100 mm square.

Control and Functionality

• Electro-hydraulic servo control combined with accumulator energy storage for smooth switching and fast response.
• Reverse support sensors monitor frictional forces for accurate shear load measurement.
• Multi-scale conversion capability for different sample sizes.

Summary of Critical Information

• All equipment adheres to national and industry standards ensuring reliability and comparability of test results.
• High precision in force and displacement measurement is maintained across all machines (typically ≤ ±1%).
• Temperature control and environmental simulation capabilities extend testing to high and low temperature conditions.
• Modular extensometer installation and hydraulic control systems enhance versatility and accuracy.
• Advanced control algorithms and mechanical design reduce friction and sudden load jumps, improving data quality.