Accounting for the Steel Lining Influence on the Results of Solid Rock Resistivity Probe from Development Working Boundary

D Marasová,J Janocko,A Khoreshok,Y Tan,V Atrushkevich,S Vöth,Anna Dyagileva,Vadim Ivanov,Seroni Anyona,D Nuray,M Petrova,P Stefanek

doi:10.1051/e3sconf/201913401008

Abstract

When solving problems of predicting the hazards of solid rock bump and outburst in development and stope workings, the resistivity probe methods are often used, in particular, the four-probe method, in which electrodes are placed on the roof or the sill of the mine. The presence of steel lining in the mine significantly affects the measurement results until the complete collapse of electric field, so the electrodes are embedded into the rock. To obtain the true value of rock resistivity, it is necessary to make corrections due to the metal lining influence. This paper is devoted to the determination of these correction factors.

Highlights

The development of mining is associated with the improvement of mining equipment [1,2,3] and geotechnology [4,5,6,7,8,9], including mineral enrichment [10,11,12], and with the introduction of information technologies [13,14,15,16,17]
Where number 3 in the potential’s superscripts means the layer’s number, in which the current source A is located, the subscripts correspond to the potentials of the corresponding layers, 1,2,3 – specific resistivity of the layers; I – the source current; J0(m r) - the zeroorder Bessel function; А1,2, B2,3 - constant coefficients to be determined from the boundary conditions of the problem
The first three boundary conditions automatically hold by virtue of writing the solution in the form (1)

Summary

Introduction

The development of mining is associated with the improvement of mining equipment [1,2,3] and geotechnology [4,5,6,7,8,9], including mineral enrichment [10,11,12], and with the introduction of information technologies [13,14,15,16,17].

Materials and Methods

Results and Discussion

Conclusion