Drillhole Detonation Method to evaluate in situ stresses in Marañón of Poderosa mining company
DOI:
https://doi.org/10.15381/iigeo.v26i51.25371Keywords:
Stress ellipse, in situ stresses, Radial cracking, Rock mass, Drillhole detonation methodAbstract
To construct any underground excavation, it is required to know the magnitude and influence of in situ stresses in the excavation; there are methods to evaluate the stresses, such as Lithostatic loading, Overcoring, Hydraulic fracturing; each with its advantages and limitations. The present Drillhole Detonation Method has the purpose of evaluating the in situ stresses with: easy application, low cost, and its results are provided on site.
The Drillhole Detonation Method; interprets the radial fractures produced around the detonated drillholes; crediting: stress ellipse, direction of the major stress σ1, calculation of the value of parameter k, and the estimation of the Correction Factor (CF) value. The formulation is adapted from the Lithostatic load method to evaluate the stresses σh and σv.
The Drillhole Detonation Method was applied in Marañón of Poderosa mining company, evaluating and randomly selecting 9 stations, and at a global level it was calculated: direction of the major stress 75°, coefficient k = 0.79, major stress σ1 = 25.19 MPa, and minor stress σ3 = 15.44 MPa.
Downloads
Published
Issue
Section
License
Copyright (c) 2023 Miguel Angel Berrocal Mallqui
This work is licensed under a Creative Commons Attribution 4.0 International License.
AUTHORS RETAIN THEIR RIGHTS:
a. Authors retain their trade mark rights and patent, and also on any process or procedure described in the article.
b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Rev. Inst. investig. Fac. minas metal cienc. geogr.
c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating the source of publication (the originator of the work, journal, volume, number and date).
