An Improved Algorithm of Coal Pillar Yield Zone Width based on Strip Mining of Thick Unconsolidated Seam

The tribes in mines are an effective method in green mining. In order to ensure the sustainable use of coal resources, this method has attracted much attention and research at home and abroad. During the mining of the application band, the stability of the strip coal pillar is an important factor in the deformation of the surface of the trusteen to minimize the surface of the surface, so that the surface sinking is limited within a certain range, and the adoption rate is as good as possible to reasonably determine the width and width and the width and the width and reasonableness and the width and the width and the width and the width and reasonableness. Leave wide size to ensure the long -term stability of coal pillar. This article is mainly aimed at the mining zone of the giant loose layer mining area. Considering the influence of the loose layer, the effect of adding a loose layer thickness, and improving algorithm on the width formula of the A.H. Wilson yield area. It is proposed to replace the calculation of gH to the improvement of g1h+g2(H-h), g1and g2 are loose layers of capacity and base rock capacity, and propose simplifying the assumption Y=l1mH+l2mh for the formula. The algorithm is applied to practice. The yield width Y= 12.33m and the remaining width amin = 75.8m calculated by the algorithm are 1.8m wider and 12m wider than those calculated by the traditional algorithm, the feasibility of the improved algorithm of coal pillar yield zone width is verified.