开云kaiyun电竞

Rugged and safe, with very high capacity, real-time plotting of test results, and suitable for use in deep boreholes.

Description

The dilatometer test is a loading test run inside a borehole with a radially expandable cylindrical probe.
It is used to determine in situ the deformability of rock mass and the creep properties of very soft rock.
The PROBEXe determines the deformations by measuring the total volume change of the probe.
This method is the same well proven method used with the pressuremeter.
It provides a mean modulus value of a large volume of rock, contrary to the use of callipered probes which can be affected by local heterogeneities.
The volume changes of the probe are measured by monitoring the displacement of a piston.
This configuration eliminates the parasitic expansion of the tubing and pumping system.
The PROBEXe is a versatile equipment that posses characteristics of a rock pressuremeter and of a flexible dilatometer.

The PROBEXe consists of:

• An inflatable NQ membrane mounted on a steel core — an optional HQ membrane kit is available

• A hydraulic module comprising a dual piston and cylinder assembly, to inflate and deflate the membrane

• A measuring module containing a linear transducer, which monitors the injected volume

• The hydraulic and electrical lead lines

• A hydraulic hand pump and pressure gauge

• A pressure transducer

• A readout unit consisting of the DP Box unit operated with an Android tablet.
  This versatile readout is compatible with other pressuremeters manufactured by Roctest.
  A special application, installed on the tablet, allows configuring the tests and calibrations,
  to read and plot the test results in real-time, to log the data, and to review test results.

Advantages & Limitations

• Provides a mean modulus of a large volume of rock

• May be used in deep borehole

• Test in NQ boreholes (optional HQ membrane)

• Very high capacity (30 000 kPa)

• Automatic acquisition & real-time visualisation for enhanced control of the test on an Android tablet

• Rugged membrane (polyurethane & fiberglass-reinforced) allowing its use in moderately bad quality zones of rock

• The use of the PROBEX in hard rock requires special precautions

• The HQ membrane has a reduced radial expansion (10%) and requires a very tight borehole

Applications

• Deformations estimation of tunnel linings, concrete dam foundations, and bridge supports

• Settlement and end bearing capacity estimation of deep foundations like caissons

• Lateral deflection analysis of drilled shaft

Let me know if you'd like this converted into a catalog entry or translated into Chinese.

For detailed specification, please contact EPC!