GeoTechnique Company

Welcome to GeoTechnique Company Website Address: #4, 2nd St., Dehboori Sq. towards Aliabad, Kabul, Afghanistan Tel: (+93) (0)752 012 456 - 799 442 996 – 799 524 805 Web Site: www.geotechnique-co.com Email: geotechnique.co@gmail.com

1-overview

Geoelectric department of GTC is concentrating on Geoelectric and resistivity measurement. we provide technical and professional service in field of geoelectric such as: environmental investigation, geotechnique, groundwater exploration and so on that mentioned in below. Our service cover all provinces of Afghanistan.

2-Service

We can present following services:

Environmental Investigations
Civil Engineering and Geotechnical investigation
Groundwater Exploration
Geological Investigations
Bedrock detection
Fracture and cavity detection in Bedrock
Fault detection in dam basin
Dam investigation
Sand and Gravel exploration
Investigation of dam leakage
Cave and void detection
Under ground water pollution detection
Determine the salinity of underground water
Archeological surveys

3-Technical Note

Field procedure is here in after. First set out electrode stakes at even intervals. Then lay out the electrode cable and attach each take-out to the stakes. Finally connect the geoelectric instrument to the electrode cable, perform an automatic test to check that everything is connected correctly and then start the automatic recording. The resistivity measurements are stored directly in the memory of the instrument. When the field measurement is complete the data are downloaded to a PC computer, inverted from apparent resistivity into "true" resistivity and presented as a color cross-section of the subsurface.

4-Advantages of Geoelectrical survey

• Highly searching depth penetration potential;

• Applicable in large distances;

• Takes short time;

• Requires fewer expenses compared to other methods;

• Very useful to recognize aquifer from aquiclude ;

• Ability to find:

► Surface and sub surface geological structure

► Thickness of layers

► Resistivity of layer by depth

► Water content of layer

► Depth of groundwater

► Separating salinity layer from potable water layer

5-Geophysical Equipment

The complete Resistivity system consist of a transmitter unit, a receiver unit and four cable reel assemblies with four electrodes and two pots. The DC-RVA1 digital resistivity meter is used to obtain profile of subsurface conditions, bedrock depth, changes in soil strata and to indicate differences in soil layers at the test site. It is also used to determine depth of the water table; to locate buried objects and structures underground; and to find discontinuties that can lead to ore discoveries. Operating Depth: Normal of 400 to 500m

Check these Technical Specifications: DC-RVA1 Resistivity, SP.

12V DC/45 Ah. Accumulator	Power External
One	Number of channel
10,20,50,100,200,300,400,500...mA	Output current
10 Megaohm (M?) Minimum	Input Empedance
50, 100, 150, 200, 500 V	Maximum Output voltage
0,01 mV up to 1999 mV auto	Read Interval
700 Watt	Maximum Output power
0,01 %	Accuracy
plus-minus-minus-plus LCD Display 4,5 Digit	Cycle type in resistivity mode
0,1 to 4 seconds	Pulse lenght
1%	Output current accuracy
4,5 Digit	LCD Display

6-Geophysical Engineering Board

proficiency	position	name
Geotechnique Engineer	Geotechnique Manager	Mohammad Hassan Alavi
	Assistant	Saeed abdali
	Assistant	Rafiullah habibi

7-Geophysical Experience

Geophysical and water exploration study by Geotechnique Company
Province	client	Project	No
Herat	ATP	Geophysical study for Herat Airport	1
Sarhang	ATP	Water Resource study for Sarhang	2
Kabul	CLL	Geophysical study for ANA Bulk	3
Kalat	ATP	Geophysical study for Kalat	4
Radkan	ATP	Water Resource study for Radkan	5
Kunduz	USACE	Geophysical study for ANA Brigade Garrison	6
Kabul	SIEMENS	Resistivity measurement of Butkhak sub-station	7
Kapisa	PHO	Water resource study for Balaghein	8
Kapisa	PHO	Water resource study for Khamzargar	9
Kapisa	PHO	Water resource study for Khan Kalan	10
Kapisa	PHO	Water resource study for Mohammad Taher Shahid	11
Kapisa	PHO	Water resource study for Bakhtiar Shahid	12
		And Others…	13