Model selection method for hydraulic supports on islanding working face of soft coal seam

The invention discloses a soft coal seam island working face hydraulic support model selection method. In combination with mining geological conditions, structures and parameters such as support strength and working resistance of the support are analyzed and determined for selection; researching roof stress and energy distribution characteristics along the trend and inclination of the coal seam as well as a vertical stress field, vertical displacement and energy distribution rules of the stope in different states to obtain a stope roof fracture rule and a stope mine pressure appearance rule; carrying out mechanical parameter testing and microstructure analysis on a soft coal seam island working face roof rock sample, analyzing an immediate roof and basic roof deformation failure rule, overlying strata structure characteristics and stope support dynamic load characteristics in a working face mining process by combining a similarity principle, and revealing a working face stope support and surrounding rock inte