Abstract

This paper investigates the circumstances and conditions that lead to the activation of a particular geological fault when longwall panel extraction occurs in the vicinity.

Three-dimensional ground movements were observed at survey stations located across a fault as these were being influenced by active mining. The development of ground movements is defined be recording the subsidence, strain and horizontal displacements of the survey stations. The measured ground movements are compared to the predicted Subsidence Engineer's Handbook and in-house Subsidence Prediction Program subsidence and strain profiles, and the visual damage evident along the testline. Conclusions are drawn which suggest that surface geology heavily influences the location and magnitude of sustained surface damage.

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