Mining Impacts on Society: A Case Study of Taita Taveta County, Kenya

The article presents an example of a transport gallery, which resistance to mining impacts proved to be not enough. In the first part of the article, there are given the principles which should be followed by this type of structures. The second part presents a of the gallery’s structure and also the analysis of the reasons for too low resistance of the objectdescription to mining influences. It has been shown that these reasons are design, execution and exploitation errors. In turn, there are presented procedures which are leading to the assurance of the resistance of the transport gallery in accordance with design assumptions. In summary, conclusions and recommendations which are formulated should be taken into account at the stage of design, erection and during exploitation of transport galleries in the industrial plants localized in mining areas. ANALIZA PRZYPADKU NIEWYSTARCZAJĄCEJ ODPORNOŚCI NA WPŁYWY GÓRNICZE PRZEMYSŁOWEJ GALERII TRANSPORTOWEJ W artykule przedstawiono przykład galerii transportowej, której odporność na wpływy górnicze okazała się niewystarczająca. W pierwszej części artykułu podano zasady, jakim powinny odpowiadać tego typu obiekty budowlane. W części drugiej przedstawiono opis konstrukcji przedmiotowej galerii oraz przeanalizowano przyczyny zbyt niskiej odporności obiektu na wpływy górnicze. Wykazano, że są to zarówno błędy projektowe, jak i wykonawcze oraz eksploatacyjne. Z kolei przedstawiono zabiegi zmierzające do zapewnienia galerii transportowej odporności zgodnej z założeniami projektowymi. W podsumowaniu sformułowano wnioski i zalecenia, które powinny być uwzględniane na etapie projektowania i budowy oraz podczas eksploatacji galerii transportowych w zakładach przemysłowych usytuowanych na terenach górniczych.

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Mining Impacts Assessment Using the LCA Methodology: Case Study of Afema Gold Mine in Ivory Coast

Integrated Environmental Assessment and Management ◽

10.1002/ieam.4336 ◽

2020 ◽

Author(s):

Kouadio Assemien François Yao ◽

Blaise Koffi Yao ◽

Olivier Belcourt ◽

David Salze ◽

Théophile Lasm ◽

...

Keyword(s):

Ivory Coast ◽

Gold Mine ◽

Lca Methodology ◽

Mining Impacts

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Identification of theoretical parameters used to forecast underground mining impacts to implement long-terms forecasts of underground mining impacts – case study

Folia Quaternaria ◽

10.4467/21995923gp.20.004.12825 ◽

2020 ◽

Vol 19 ◽

pp. 37-48

Author(s):

Marek Kruczkowski

Keyword(s):

Underground Mining ◽

Ground Surface ◽

Hard Coal ◽

Coal Seams ◽

Mining Operations ◽

Mining Impacts ◽

Geodetic Measurements ◽

The Impact

The paper is a case study of ground surface subsidence induced by a long-term mining of hard coal. Knothe prediction model is commonly used in Poland as a technique for prediction of the subsidence-related deformation of ground surface. The presented issue is related to assumptions about the value of the theory parameters in long-term forecasts on the impact of mining on the surface, which are included in the mine development plan. Incorrectly selected values can significantly influence the quality of deformation forecasts. The calculations presented in the article were made for the area where the exploitation of six coal seams lasted more than thirty years. At the same time, deformations of the surface were observed by means of geodetic measurements. Based on the subsidence curves of the observation line points over time, three periods of rock movement decrease were determined. The range of mining operations was determined for the periods of decreased rock movements. The parameters of Knothe’s model were identified on the basis of geodetic measurements for extracted coal seams. Parametric calculations were made for the increasing range of mining operations and for the ranges of operation between subsequent decreases in the movements of the rock mass. Identification of the parameters of the theory thus made it possible to trace changes in the parameter values for different mining ranges. Significant changes were noted for the parameter describing the dispersion of influence (tanβ), while changes in the coefficient of roof control are not significant and their value becomes stable after some time. As the extent of the mining exploitation was increasing, its influence on both parameters (tangent of angle of major influence – tanβ and coefficient of roof control ‘a’) were evaluated. The changes of tanβ values were found to be significant whereas the changes of the ‘a’ coefficient value are negligible and its value seems to be constant after the initial stage of mining.

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The Genesis and Internal Dynamics of El Salvador's People's Revolutionary Army, 1970–1976

Behavioral and Brain Sciences ◽

10.1017/s0140525x13009850 ◽

2014 ◽

Vol 38 (01) ◽

pp. 102-129

Author(s):

ALBERTO MARTÍN ÁLVAREZ ◽

EUDALD CORTINA ORERO

Keyword(s):

Latin America ◽

El Salvador ◽

Early Years ◽

Left Wing ◽

Internal Dynamics ◽

Internal Coherence ◽

The 1960S

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.

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