Rock Polyaxial Tets System
Rock Polyaxial Tets System
Rock Polyaxial Tets System
Rock Polyaxial Tets System
Rock Polyaxial Tets System
Rock Polyaxial Tets System
Rock Polyaxial Tets System
Rock Polyaxial Tets System
- Description:
Rock Polyaxial Tets System
- Model:
岩石真三轴
- Manufacturer:
APS-WILLE Geotechnik
Product Information
  • Description
  • Standard
  • Feature
  • Specification
  • Configuration
  • Software
Description

岩石真三轴测试系统

This Unique experimental testing system is a customized solution used to study the behavior of rock under various dimensional and compressive stress regimes

(σ1 ≠ σ2 ≠ σ3). This fits to the research goals of geothermal energy researchers, hydrologists, petroleum reservoir engineers and researchers in the mining section, geophysics and geotechnical sectors.

The system is capable of testing a wide range of materials from granite to mudstones and also for post-failure regime of high-strength brittle rocks.


The rock Polyaxial testy system is designed to meet standard testing parameters or desired test conditions which is different for different applications. we are able to tailor our products and services to meet your aims and needs. Different upgrading options allow the user to set up his device with desired testing options. for different fields of testing e.g.:

• Rock mechanics research

• Mining and construction

• Exploration and production of fossil fuels

• Geothermal energy development


Polyaxial rock testing systems are designed to induce stress on cubic samples via three independent controlled principal axes (σ1 ≠ σ2 ≠σ3) up to 1200kN or higher stresses on request.

The sample chamber can house cubic samples up to 300 mm and has the option to be equipped with a temperature control up to 150 °C as well as a pore pressure device and the ability to have continuous acoustic emission recording, Ultrasonic tests ,Hydrofracturing and permeability(transient or steady state) measurements.

The complete system is fully automated and controlled by our flexible and programmable GEOsys Software. Various sensors, transducers, testing and experiment options are available.


Rock Polyaxial Testing Cell

The cubical polyaxial high pressure testing cell is mounted on a rigid frame designed to perform true triaxial tests on rock specimens. This makes it possible to test static stress-strain measurements in each of the principal stress directions (sigma 1, sigma 2, sigma 3). This cell is designed for different cubical specimen sizes up to 300 mm x 300 mm x 300 mm (larger sample size capacity available upon request. The cell is designed for injection of liquids (can be saline) into each surface of the cube for fracturing tests (borehole injection tests) or permeability tests under loaded conditions.

The below components are need for performing the tests. These tests can be carried out on a series of sample sizes under different stresses:

• 6 servo-hydraulic actuators with a capacity up to 1200kN

• Loading platen for each face

• Accuracy of pressure control 0.1%

• 6 incorporated high-resolution displacement transducers (LVDTs) for strain measurement in each stress direction, resolution 0.0001 mm

岩石真三轴试验机

Hydraulic Power Pack

Our series of hydraulic power-packs supply smooth hydraulic fluid to actuators, hydraulic pressure intensifiers, and servo hydraulic testing machines to meet their testing system demands.

As the dynamic performance of a hydraulic system depends on input oil flow and pressure in cylinder therefor we offer a wide range of flowrates to meet required dynamic performance for your application. All components are mounted conveniently for easy access.

A key feature of our hydraulic power packs is that they offer demand-dependent flow-rate control, delivering at a constant pressure of 210, 280 or340 bar. They can locate beside or in greater distance from load frame.

An oil-to-water heat exchanger or air-cooling exchanger controls fluid temperature. A temperature switch turns the hydraulic power pack off when the temperature of the fluid exceeds a pre-set value – lights on a front panel are used to indicate temperature levels. Closed loop re-cooler system (chiller for Oil /Water Cooling) is available on request and can be integrated to the unit.

高温高压岩石三轴仪

Front Panel Geography

indicators:Main switch、Emergency Stop、“Start”、“ON”(indicator light)、Reset、Manometer to operate pressures、Filter、Oil level (blinking)、Temperature (blinking)、Motor Temperature: The pump motor is overloaded、E-Stop: Illuminates after the emergency stop has been pressed

高温高压岩石三轴仪

Air Cooling Method

Air cooling method uses a large fan which forces cooling air through the vanes of a radiator to reduce the temperature of hot oil quickly and efficiently. The hot oil is circulating in radiator to get cooler and gets working condition again. For large flow rate power pack, the fan generate larger amount of cooled air or it is recommended to use water cooling method.


Water Cooling Method

In this method a cooled water is reducing the temperature of oil to enable it to reach to working temperature condition. Depends on the flow rate of the power supply, the water flow rate be calculated correctly to give the good performance. The noise level of hydraulic supply units which use water cooling method is higher than Air cooled method. For example, the noise level of a hydraulic supply with flow rate of 7 LPM with water cooling method is 51dbwhich is super quiet while with air cooling is 62db (the values are measured in 1-meter distance form unit).


Pressure Intensifier

Our pressure intensifiers provide closed-loop, servo-controlled pressure to test samples. This can be used to generate confining or pore pressure in connection with multi-channel electronically controlled systems that manage servo-valves mounted to intensifiers. They are also used to measure permeability or for hydro-fracturing tests. Intensifiers can be used to measure flow in permeability tests as well as volume change in triaxial tests while the required pressure is applied.

Separate hydraulic power is needed to supply a primary power source to the pressure intensifier which in Rock triaxial tests is our main hydraulic power pack. This pressurizes fluid to 21 MPa (3,000psi), which in turn fills the intensifier’s reservoir. The fluid in the reservoir can then be brought up to the required pressure by the intensifier e.g.140MPa or 210 MPa.

A double-pump or a dual piston intensifier with two servo-valves is available as an option for pressure or volume control when continuous flow is required.

高温高压岩石三轴仪

Front Panel Geography

Diagram of valve schematic、Fluid level indicator、Pressure indicator、Manual valves (pressure on/off, and flushing valve or pressure supply/outlet as option)

And optionally on request can have: • Start/stop button  • Visible electronic temperature indicator  • Emergency shut down button

岩石真三轴测试系统

Pore Pressure System

The pore pressure units are used to saturate jacketed specimens, pressurize andcontrol pore fluid in the specimen and are used for permeability tests.

Our high precision syringe pumps for these applications although the pressure intensifiers which are similar to units for cell pressure are useful for this purpose.

Fluid pressurized by the pumps ore pressure intensifier is applied to one or both ends of the specimen. Operators can perform drained and undrained tests, and the displacement transducer allows calculation of the pore fluid flow rate.

岩石真三轴测试系统

Permeability Tests

The permeability test measurement is done by one or a combination of two pumps which are used to measure sample permeability by applying different pressures at each end of the sample, then measuring the pressure decay of the two ends over time. A set of end caps for permeability tests are available for each specimen diameter.

岩石真三轴测试系统

Hydraulic Fracture Test

The Main system is able to run hydrofracturing test in combination with a high-pressure syringe pump or High-pressure intensifier and relevant components which are used to apply constant high-pressure fluid through a steel tube on hollowed sample. The pressure applies on the centre of one side of cubical specimen while the specimen is under desired principal stresses and temperature. The dedicated software module would be integrated to main software for controlling the test.

To perform hydraulic fracturing test a borehole is drilled on center of one surface of sample and hydraulic fracturing port is embedded on this face and sealed at the loading plate. Then the required fracturing pressure would be applied to the pre-drilled borehole through the embedded port.

岩石真三轴测试系统

Temperature Control Package

This package allows the user to control and monitor the temperature from ambient temperatures to150°C with an accuracy of 0.1 °C inside the imaging cell.

The controlling of temperature form room temperature to desired temperature can be controlled by main software of the machine.

The dedicated method of temperature controlling includes of 9 special heaters on each platen side which are able to have a high range of heating rate to reach to desired temperature in lower time that conventional methods. The signals come to a controller to conduct a feedback control of the temperature, which is shown on an external display (on request) and within the software.

岩石真三轴测试系统

Ultrasonic Wave Maeasuring System

This is a complete system and is comprised of all required electrical and mechanical hardware e.g. signal conditioner and pulse generator, ultrasonic velocity and data acquisition controller, ultrasonic platens including combined P and S (OptionalS1 & S2) transducers as well as the required software. This package conducts ultrasonic velocity measurement tests on rock samples. The test is applicable at temperatures of 200°Cand pressures of up to 210 MPa.

高温高压岩石三轴试验系统      高温高压岩石三轴试验系统

Digital Controller

Digital High-Speed High Resolution Expandable Real Time Control and data acquisition System 10KHz control and data acquisition and 24 bit resolution. The Dynamic controller is suitable for screw driven instruments(electromechanical) , hydraulic instruments with a valve driven with ±10 Volt and variety of sensors e.g. load cells, LVDTs, strain gauges, extensometers, thermocouples and etc.

The multi-functionality of the controller allows a modular design of the measurement and control parameters (sensors) via intelligent sensor plug, which store the calibration parameters, thus depending on the application can be used flexibly.

岩石真三轴测试系统    岩石真三轴测试系统

Main Features

• Up to 32 low-noise closed-loop control channels for static and dynamic tests

• up to 24-bit resolution channels for each test axis (e.g. force, displacement, pressure, strain)

• With digital controller parameterization and bumpless switching between all control functions

• Smooth changeover between all control functions

• Complete, simultaneous data transmission to avoid any data loss

• Digital adjustable controller parameters (P-I-D parameter)

• Simple and flexible test or setpoint parameter adjustment

• I/0 processing of externally connected

• Configuration and setup with PC software

Standard
Feature

• High stiffness stand-alone construction desig

• Six (6) hydraulic actuators for applying independent stresses (σ1 ≠ σ2 ≠ σ3)

• Cubical chamber for different sample sizes up to 300*300*300mm

• Adaptors for smaller sample sizes e.g.: 200,100or 50mm cubical samples

• High pressure platens are combined with a friction reduction system.

• Six (6) high precision displacement transducers to measure strains on each face on the three principal directions

• Flexible controlling software for nearly unlimited test procedures of all Polyaxial test applications

• Carriage assembly for easy removal and placing of Sample in 4 directions

• High speed dynamic controller (2,5 kHz or 10kHz) for monitoring of measured values and closed loop control e.g. load, displacement, position and volume or flow

• Flexible controlling software for nearly unlimited test procedures of all test options

• The system is capable of applying different stress paths or strain rates

Specification
DescriptionTechnical Specification
Static Load2000 kN
Piston Stroke100mm (±50mm)
Cell Pressure20 MPa
Temperature+200°C
Sample size/s300x300x300mm     200x200x200mm  100x100x100m


Configuration

岩石真三轴试验机

System Geography

① High Stiffness/heavy duty base unit including of carriage part for 4 directionsHydraulic Power pack

② Polyaxial Test cell

③ Actuator/s for generating principal stress

④ Servo-hydraulic power pack

⑤ Pressure intensifier for hydrofracturing test

⑥ High Speed dynamic controller

⑦ High Pressure Syring Pump For Pore Pressure / Permeability Or hydr-Fracturing

⑧ Software


Upgrading Options

• Pore water pressure ports on each face

• Hydrofracturing test package to perform wellbore stability tests

• Temperature controlling from ambient up to 150 °C

• Ultrasonic test package on each loading face (P & S)

• Permeability tests (steady states or unsteady state)

Software

GEOSYS Software

GEOsys is a multi-functional and modular controlling and data acquisition software in Windows. It allows for the simple programming of complex user defined test sequences via structured Windows instructions on a graphi cuser interface.

GEOsys utilizes a flexible, programmable system that controls test appliances that coordinate various test operations. The flexible operating panel provides tools to configure the appliance,  editors to carry out load procedures, and functions for analysis, presentations and logs. The software is designed to support a modul arstructure for the test environment so as to enable a flexible configuration and thus fulfil the specific requirements of the company.


The important key feature of this software is the ability to allow users to simply and freely program standard or complex test sequences with structured Windows operations via a graphic user interface.

Thanks to the wide range of abilities Geosy soffers, it is not only compatible with our products, but it can also be used with hardware from other manufacturers, providing data acquisition and test controlling for hard- ware of a similar or more advanced standard.

高温高压岩石三轴仪

Main Features

• Unique platform to address all testing needs, be it soil, asphalt, rock or construction related, both dynamically and statically

• Controlling and data acquisition software

• Simultaneous loops for all connected actuators

• Free programmable Test Sequence Control and Formula Editor (upgrade version)

• Complete real-time data-acquisition and closed- loop control for each channel using real parallel configured channels

• Flexible and user-friendly

• Supporting functions of similar manufacturer Options concerning data conversion in ASCII

• Digital setting of PID Parameters (parameter optimizing or tuning depending on the material) even during operation

• User roles (administrator, service, developer, lab assistant) for easy handling – decreasing the likelihood of errors

• OS platform independent software (e.g. available for WINDOWS, LINUX or MAC OSX)

• Ability to allow users to simply and freely program standard or complex test sequences with structured Windows operations via a graphic user interface

• Suitable for up to any number of simultaneous and independent real-time, closed-loop controlled channels, machines, or test devices, such as axial load, confining pressure, pore water pressure, as pore air-pressure

• Management of hardware components User supplied, calculated measurements

• Languages: English, German, Russian, Chinese, Polish and etc


Rock Test Modules

GEOsys is designed for closed-loop controlled static & Dynamic tests for all test applications in material testing, such as stress-controlled, strain-controlled, all stress paths, loops, any kind of waveforms like sine, rectangle, triangle, and predefined waves.

It is controlling and data acquisition software and also has different modules to run tests according to ASTM or ISRM methods. Please note that some tests listed below will require optional hardware. Depends on the requirement of the customer one or several modules would be delivered with main software, such as:

• ASTM, Triaxial compression strength Test

• ISRM Rock Triaxial compression Test

• Rock Permeability Test (Steady State Method Oscillatory Method, Transient Pulse Method)

• Creep of cylindrical Rock core specimens in Triaxial Compression (ASTM D4406-04)

• Post-failure Test

• Hydro-Fracturing Test

• Rock Poroleastic Properties measurements

• Measurements of Poroelastic coefficients

• Biot's coefficient

• Skempton's coefficient

• Pore pressure control Test

• Pore fluid diffusion

• Hydrostatic loading

• Proportional Loading Test

• Biaxial Strain Test

• Static Rock Shear Test

• Cyclic Rock Shear Test

• Rock Polyaxial Test

• Temperature control Test

• Uniaxial Compression Test

• Uniaxial Strain Test

• Creep of cylindrical soft and hard rock specimens in uniaxial compression (ASTMD7070-16)

• Deformability of Rock Materials in Uniaxial Compression (ASTM D7012)

• Indirect tension tests on Rock specimens

• Direct Tension tests on rock specimen

• Fracture toughness according to the recommendations of ISRM

• Strength of rock Test

• Ultimate and breaking strength

• Data Acquisition

高温高压岩石三轴仪