Deformation of high spoil heaps of clayey materials
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Published:2001
I Vaníček, 2001. "Deformation of high spoil heaps of clayey materials", The exploitation of natural resources and the consequences: The proceedings of GREEN 3: the 3rd International Symposium on Geotechnics Related to the European Environment held in Berlin, Germany, June 2000, R. W. Sarsby, T. Meggyes
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The north part of the Czech Republic is strongly affected by opencast mining activity. The amount of excavated and back-filled clayey material (which overlies the brown coal) is roughly 200Mm3 per year. The utilisation of uncompacted clayey soil heaps for new construction is virtually a necessity in this region - the permissible total and differential settlement is usually a limiting factor. The largest part of the settlement occurs during the filling. But for new construction it is necessary to calculate the deformation of the surface of the spoil heap after the end of filling. Therefore the following approaches are discussed - prediction based on past experience, prediction from results of compression tests in a large diameter oedometer, prediction on the basis of initial deformation measurements. The final approach is now preferred, because there is usually some delay between the end of filling and any new construction.
1 INTRODUCTION
2 SETTLEMENT OF NEW CONSTRUCTION ON THE TOP OF SPOIL HEAPS
3 SETTLEMENT OF SPOIL HEAP BODY
4 CONCLUSION
5 ACKNOWLEDGEMENT
6 REFERENCES
