Research of the electrical anisotropic characteristics of water-conducting fractured zones in coal seams

Water flooding disasters are one of the five natural coal-mining disasters that threaten the lives of coal miners. The main causes of this flooding are water-conducting fractured zones within coal seams. However, when resistivity methods are used to detect water-conducting fractured zones in coal se...

Full description

Saved in:
Bibliographic Details
Published in:Applied geophysics 2017-06, Vol.14 (2), p.216-224
Main Authors: Su, Ben-Yu, Yue, Jian-Hua
Format: Article
Language:English
Subjects:
Anisotropy
Coal
Coal mines
Coal mining
Computer simulation
Density
Disasters
Earth and Environmental Science
Earth Sciences
Electrical resistivity
Flooding
Floods
Fractures
Geology
Geophysics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Mathematical models
Methods
Mining
Numerical simulations
Porosity
Pressure
Shape
Simulation
Surface roughness
Water
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Water flooding disasters are one of the five natural coal-mining disasters that threaten the lives of coal miners. The main causes of this flooding are water-conducting fractured zones within coal seams. However, when resistivity methods are used to detect water-conducting fractured zones in coal seams, incorrect conclusions can be drawn because of electrical anisotropy within the water-conducting fractured zones. We present, in this paper, a new geo–electrical model based on the geology of water-conducting fractured zones in coal seams. Factors that influence electrical anisotropy were analyzed, including formation water resistivity, porosity, fracture density, and fracture surface roughness, pressure, and dip angle. Numerical simulation was used to evaluate the proposed electrical method. The results demonstrate a closed relationship between the shape of apparent resistivity and the strike and dip of a fracture. Hence, the findings of this paper provide a practical resistivity method for coal-mining production.
ISSN:1672-7975
1993-0658
DOI:10.1007/s11770-017-0620-2