Simulation and Analysis of Forced Caving Blasting Scheme for Overburden Steep Inclined Strata in Coal Mining

doi:10.16182/j.issn1004731x.joss.201804021

Abstract

Abstract: According to the actual situation of overburden steep inclined strata with horizontal fracture, the reasonable goaf forced caving blasting schemes are studied. Considering overburden characteristic and representative, two schemes are put forward with the attachment perpendicular to their break point locations. By setting different places of blasting points, the different directions of blasting and blasting area are determined, and the overlying strata movement and development characteristics of blasting fracture are analyzed. The overlying strata movement range is larger and can develop to the surface after blasting; The conclusion is that the influence range of the fracture is wide in the level blasting scheme, while relatively narrow in the vertical blasting scheme; the ground subsidence of the level blasting scheme is 20% larger than that of the vertical blasting scheme.

Key words: Mining engineering, Steep overburden, Horizontal fracture, Forced caving blasting, Simulation

CLC Number:

X936

Cui Tiejun, Ma Yundong, Wang Laigui. Simulation and Analysis of Forced Caving Blasting Scheme for Overburden Steep Inclined Strata in Coal Mining[J]. Journal of System Simulation, 2018, 30(4): 1384-1389.

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