Study on Classification of Close Coal Seams in Hebao 
Mining Area Based on Layer Spacing

Huiyu Guo

Study on Classification of Close Coal Seams in Hebao Mining Area Based on Layer Spacing

Huiyu Guo

Abstract

In order to understand the situation of close coal seam in Baode mining area of Hequ, it is convenient to form the surrounding rock
control technology of roadway in close coal seam. Aiming at the inner staggered roadway under the goaf in Hebao mining area, a mechanical
model is established, the influence of layer spacing on the inner staggered roadway is analyzed, and a short-distance coal seam classification
method based on layer spacing is proposed. The results show that the close distance coal seams in Hebao mining area can be divided into three
categories: 0-2m is the close distance coal seam with very small spacing, 2-6m is the close distance coal seam with small spacing, and more
than 6m is the close distance coal seam with large spacing.

Keywords

Close coal seam; Layer spacing; Inner alternated roadway; Coal seam classification

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