Identification of the damage zones and crushed fault zones, by calculating fracture density with geophysical data for water exploration in hard formations

Zamani G., Behzad; Hasanpour Sedghi, ءخاشئشی; Zahmati, Bagher; Seyfi, Rasol; Zamani, Khosro

doi:10.22077/jt.2020.2490.1021

Identification of the damage zones and crushed fault zones, by calculating fracture density with geophysical data for water exploration in hard formations

Document Type : Original Article

Authors

Behzad Zamani G. ¹

ءخاشئشی Hasanpour Sedghi ²

Bagher Zahmati ³

Rasol Seyfi ⁴

Khosro Zamani ⁵

¹ Department of Earth-sciences, Natural sciences college, University of Tabriz, Tabriz, Iran

² Assistant prof., University of Tabriz, Natural Sciences College, Earth Sciences dep.,

³ 5- Expert of East Azerbaijan, Water and water waste co.

⁴ Expert of Ardabil survey of water resources

⁵ Abyab zamin co.

10.22077/jt.2020.2490.1021

Abstract

Necessity of the human to the safe and permanent water sources is one of the important problems. In the last decades, soft rock aquifers of country mainly are used, therefore, exploration for groundwater in the hard rocks has focused
Tectonics and faults one of the important factors to crush the rocks and formations and make and develop the faulted aquifers. Therefore, in this study the role of the structural geology is researched in development of the underground fractures and have used the geophysical tests to explore water sources and well locating. In this case three study area researched in country. An important property means the Lambda parameter for the first time have used in the studied areas to determine the fractures density.
In this research evaluate the Lambda parameter and fracture density in three study area in Iran. where Lambda parameter used to determine and print the joints and fracture density and anisotropy countor maps. These maps show potentially for developing the ground water is high where Lambda parameter is highest. Lambda was 8 in Aghlighan-chay and Khomarlou and 1.76 in Kermanshah University. The location of the 2nd soundage in Khomarlou project after boring have had up to 40 L/S well water. Therefore this method is a new method to evalute the aquifers before borring the wells to acces the new resources of ground water and manegment the drought hazards.

Key words: Crushed fault zones, Anisotropy

Keywords

Crushed fault zones

Anisotropy modulus

Fracture density

mean longitudinal resistivity