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GEOPHYSICS

Some of our team of experts  have extensive experience in application of several techniques and geophysical methods focused on geotechnical surveys and mining, such as  seismic methods, Electrical Resistivity Tomography and Vertical Electrical Sounding, electromagnetic  methods (EM y VLF) and georadar.

Tests of natural vibration of soils  with Nakamura method are also taking place, in order to define the seismic profile of subsoil for the right and accurate classification in accordance with the seismic-resistant rules (NCSE, NCR, NEC-ES-DS, NEHRP).

We offer our customers measurement equipment for refraction waves with active (Vp) and passive (Vs) methods, and vertical electrical  sounding (SEV).

Technical characteristics of geophysical equipment:

• EQUIPMENT FOR VERTICAL ELECTRICAL SURVEYS, CALCIATES, SPONTANEOUS POTENTIAL AND INDUCED POLARIZATION
Trademark: SCINTREX
Model: SARIS System
Outlet: Until 100 W and 1.0 A (with 1% of precision)
Input: Until 40 V (with 1% of precision and 0.15 micro V resolution)
COMP. POT. ESP.: Automatic of 0 to 1 V
Memory: Until 16000 simple measures
Dump data: Interfaces USB y RS-232
Screen: VGA monochrome of 320 by 240 pixels
Batteries: Incorporated of 24 V

• EQUIPMENT FOR INDUCED POLARIZATION MEASURES:
Cycles: 1, 2, 4 u 8 seconds
Windows: 4
Chargeability: 0,1 mV/V
Precision: 1%

• EQUIPMENT FOR VERTICAL ELECTRICAL PROBE AND CALCIATES:
Trademark: SOILTEST
Model: RS-40
Outlet: Until 100 W y 1.0 A maximum voltage 500 V
Input: Hasta 40 V
Spontaneous potential Compensation: Manual of 0
to 1 V
Batteries: Incorporated of 24 V

• SEISMIC REFRACTION EQUIPMENT
Central unit of measurement:
Trademark: DOLANG
Models: DVB 240 WTO AND JEA 24 BIT
Channels: Until 99 procurement channels of 12 units
Data collect: Refraction and reflection
Storage:
Portable personal computer COMPAQ Armada 1130. Proccesor Intel P-III

• GEOPHONES
Trademark: MARK
Model: M-III
Frequency: 470 Hz.
Seismic cable: Twelve input clips with a maximum separation of 8 meters between each one.
Power unit: Strike by means of a 6-10 Kg mace on a duralumin plate.

• PASSIVE SEISMIC EQUIPMENT:
Trademark: DOLANG©
Model: JEATROM
Channels: 3 (X – Y – Z)
Impedance: 47.000 Ohm
Signal/Noise: 124 Db to 1 Hz
Response frequency: 0 – 800 Hz
Sampled: 250 and 500 Hz

• WAVE ANALYSIS PROGRAMS:
– SeisOpt ReMi
– Easy HVSR ®
– SeisOpt@2D
– Res2Inv 2D y 3D