It is stated the technique of natural researches of behaviour of a rock mass around extraction cameras and the drilling mine workings, adjoining to them. Character of deformation of the massif around the extraction chambers is investigated when working of ore reserves on two working levels. Basic areas of the massif deformation which are located in the massif of hanging wall rocks and in the ore massif at the inclined bottom of the cameras are established. The results of the industrial measurements of the ore massif deformations around the drilling mine workings are displayed. The size of the destroying deformations in the drilling orts of 665 m horizon from lying wall rocks changes depending on the distance to the primary cameras on square-law dependence. For the drilling orts of 690 m and 715 m horizons the size of the destroying deformations from hanging wall rocks changes depending on the distance to the primary chambers on cubic dependence. Also empirical dependences of deformation size change on the extraction cameras depth location are established. Empirical dependences of the destroying deformations size in the drilling mine workings roof on the distance to cameras are received.

2010_09-10 Khom
2012-12-14  350.07 KB  1273

Tags: rock massif • design and actual sizes of chambers • drilling workings • support deformations • depth of location