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Hypothesis of the multiple subsidence trough related to very steep and vertical coal seams and its prediction through profile functions |
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| Authors: | Rafael Rodríguez Díez Javier Toraño Álvarez |
| Institution: | (1) Departamento de Prospección y Explotación de Minas, Escuela Técnica Superior de Ingenieros de Minas de Oviedo, C/ Independencia, 13, 33004 Oviedo, Spain;(2) Departamento de Prospección y Explotación de Minas, Escuela Técnica Superior de Ingenieros de Minas de Oviedo, C/ Independencia, 13, 33004 Oviedo, Spain. |
| Abstract: | Coalfields in the north of Spain (Asturias) are mainly steeply dipping and at considerable depth. There is widespread use of caving mining methods at the present time. This paper describes a theory developed to predict the subsidence related to very steep and nearly vertical coal seams (70°–90°). This  theory of the multiple subsidence trough is applied through a new profile function. Three real cases are analysed and the profile function is adjusted. An empirical relationship between the parameters of the new profile function and geological and mining factors has been developed. |
| Keywords: | caving mining methods multiple subsidence profile function subsidence trough vertical coal seams |
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